diff --git a/benchmark/knapsack/ChallengeA/benchmark_ml.csv b/benchmark/knapsack/ChallengeA/benchmark_ml.csv
index 6236f17..c22d91c 100644
--- a/benchmark/knapsack/ChallengeA/benchmark_ml.csv
+++ b/benchmark/knapsack/ChallengeA/benchmark_ml.csv
@@ -1,151 +1,151 @@
-,Solver,Instance,Wallclock Time,Lower Bound,Upper Bound,Gap,Nodes,Mode,Relative Lower Bound,Relative Upper Bound,Relative Wallclock Time,Relative Gap,Relative Nodes
-0,baseline,0,662.7372989654541,59162.0,59167.0,8.451370812345763e-05,18688107.0,exact,1.0,1.0004734608295711,8.24056340052232,1.0,5.021790706354566
-1,baseline,1,900.0007548332214,59137.0,59256.0,0.002012276578115224,24175550.0,exact,0.9998140258335024,1.0019275641675967,4.993385989449955,23.8,2.8587779277329206
-2,baseline,2,900.0016160011293,59186.0,59285.0,0.0016726928665562802,24089218.0,exact,1.0,1.0015880792688077,6.423201244853467,19.8,3.8892212441359084
-3,baseline,3,900.0023140907288,59145.0,59231.0,0.0014540535970918927,24595759.0,exact,1.0,1.0013693998309383,10.818053497641843,17.2,7.003043147607749
-4,baseline,4,900.0024960041046,59142.0,59213.0,0.0012005004903452704,25467171.0,exact,1.0,1.0011327900449734,10.658841862319106,17.749999999999996,6.900425045120571
-5,baseline,5,900.002925157547,59126.0,59244.0,0.0019957379156377904,23457042.0,exact,1.0,1.0020974289580513,11.640217537235461,23.595609376585596,6.210826151987437
-6,baseline,6,900.0031039714813,59125.0,59236.97169757604,0.001893813066825174,24240772.0,exact,1.0,1.0018090934817527,5.121599930210644,22.394339515207683,2.997538733050967
-7,baseline,7,900.002781867981,59105.0,59212.0,0.001810337534895525,24042592.0,exact,1.0,1.001725596345796,4.327836971922191,21.400000000000002,2.5321558603504406
-8,baseline,8,900.0021660327911,59169.0,59251.0,0.0013858608392908448,25512146.0,exact,1.0,1.001301247169365,9.974687380609685,16.4,6.491243791727731
-9,baseline,9,900.0015439987183,59130.0,59256.0,0.00213089802130898,23227790.0,exact,1.0,1.0021478462345041,6.707523295315465,25.197442922374428,3.6079997415289373
-10,baseline,10,900.0024099349976,59127.0,59201.0,0.0012515432881762985,25015636.0,exact,1.0,1.0011668808766827,12.967000721437445,14.8,8.304405920593773
-11,baseline,11,900.0025849342346,59198.0,59289.0,0.0015372140950707794,24558832.0,exact,1.0,1.0017741281427412,4.832665619009983,18.19415858643873,3.0010133789730644
-12,baseline,12,900.0022029876709,59102.0,59224.0,0.002064227944908802,24026788.0,exact,1.0,1.0019794609775492,5.374176210382269,24.400000000000002,2.9878278547301225
-13,baseline,13,900.0011007785797,59150.0,59206.0,0.0009467455621301775,24953207.0,exact,1.0,1.0008621418307835,11.635403359432718,11.2,7.550357589811989
-14,baseline,14,900.0014700889587,59169.0,59250.0,0.0013689600973482733,25494260.0,exact,1.0,1.0014535866405248,11.415744726455014,16.197262079805302,7.11231988876617
-15,baseline,15,900.0013790130615,59083.0,59196.0,0.0019125636816004605,23792716.0,exact,1.0,1.0018277822908204,7.00278363514675,22.6,3.9955739669454795
-16,baseline,16,900.0020098686218,59126.0,59233.0,0.0018096945506207078,23398798.0,exact,1.0,1.001724983511187,10.004008035629374,21.39999999999999,5.838894625495521
-17,baseline,17,900.0023510456085,59156.0,59197.0,0.0006930826965988236,25573586.0,exact,1.0,1.0006930826965987,10.766823251438453,10.249306917303404,7.247469055209355
-18,baseline,18,900.002711057663,59118.0,59211.0,0.0015731249365675427,24489136.0,exact,1.0,1.001505361794256,20.92492767473306,23.249999999999996,12.911968272028759
-19,baseline,19,724.1934628486632,59159.0,59164.0,8.451799388089724e-05,20931760.0,exact,1.0,1.0000005221863417,15.470961784565928,1.0062173397822212,10.591789902465559
-20,baseline,20,900.0011439323425,59068.0,59191.0,0.0020823457709758246,23411794.0,exact,1.0,1.0020823457709758,4.918028875786363,24.597917654229025,2.6615039039030846
-21,baseline,21,380.06568694114685,59175.0,59180.0,8.449514152936208e-05,11618526.0,exact,1.0,1.0000168978860744,7.919828298356752,1.2500000000000002,5.819928018093155
-22,baseline,22,900.0016028881073,59121.0,59154.94711904253,0.0005741973079365614,26352886.0,exact,1.0,1.0004895835849292,12.802476483072159,6.789423808503489,8.910205446497793
-23,baseline,23,230.2515211105347,59193.0,59198.0,8.44694474008751e-05,6776049.0,exact,1.0,1.0000506799560773,9.78740127403808,2.5,6.593321682880646
-24,baseline,24,900.0010840892792,59162.0,59240.0,0.001318413846725939,24727727.0,exact,1.0,1.0015046237595306,7.770410032372326,15.595781075690478,4.794053315238465
-25,baseline,25,900.0015320777893,59096.0,59210.0,0.0019290645728983352,23438919.0,exact,1.0,1.0018443004348487,4.2755794007345695,22.800000000000004,2.430121857984345
-26,baseline,26,900.0015478134155,59089.0,59203.0,0.001929293100238623,23826788.0,exact,1.0,1.0018784268598118,8.530928147165179,22.799228282759906,5.011843048217148
-27,baseline,27,900.0010070800781,59153.0,59249.0,0.0016229100806383447,24336831.0,exact,1.0,1.00155518366381,10.423236857875487,24.0,6.308787984678588
-28,baseline,28,900.001277923584,59112.0,59208.0,0.0016240357287860333,25111591.0,exact,1.0,1.001759610178668,4.24772722090385,19.195777507105156,2.51698592241038
-29,baseline,29,900.0012440681458,59182.0,59263.0,0.0013686593896792946,24919871.0,exact,1.0,1.0012840657576834,8.059220760590607,16.200000000000003,5.036832737480212
-30,baseline,30,900.0012910366057,59134.0,59241.0,0.001809449724354855,23615391.0,exact,1.0,1.001741688930975,10.270593022832227,26.75,5.93002733819128
-31,baseline,31,900.0023548603058,59082.0,59169.0,0.0014725297044785213,26213904.0,exact,1.0,1.0013877841149492,9.233104613426313,17.4,6.46848815130208
-32,baseline,32,875.9193549156189,59175.0,59180.0,8.449514152936208e-05,24935695.0,exact,1.0,1.0,15.987594126158756,1.0000000000000002,10.566626155685903
-33,baseline,33,900.0018489360809,59088.0,59177.0,0.0015062279989168698,25210167.0,exact,1.0,1.0017435758540136,5.976698536074014,17.794276333604117,3.7206591588857045
-34,baseline,34,232.1541509628296,59190.0,59195.0,8.447372867038352e-05,7309410.0,exact,1.0,1.0000004582681972,7.491532555121356,1.0054550306131191,5.486824178505076
-35,baseline,35,900.0025398731233,59183.0,59262.0,0.001334842775797104,23927493.0,exact,1.0,1.0012502534297494,9.740123405548385,15.800000000000002,5.589212880222508
-36,baseline,36,900.0010929107666,59166.0,59254.0,0.00148734070243045,25589946.0,exact,1.0,1.001402714167413,8.189434772332733,17.599999999999998,5.231226419568548
-37,baseline,37,622.9371509552003,59202.0,59207.0,8.445660619573664e-05,18595087.0,exact,1.0,1.0007944557133197,5.843025914211684,1.0000000000000002,3.7958181894266696
-38,baseline,38,557.924427986145,59212.0,59217.0,8.444234276835778e-05,16270407.0,exact,1.0,1.0,11.210883533380606,1.0000000000000002,7.713703594486476
-39,baseline,39,900.0010092258452,59143.0,59185.0,0.0007101432122144633,26304077.0,exact,1.0,1.0006593852500592,19.245967989620727,14.000000000000002,12.92696707623566
-40,baseline,40,900.0011250972748,59158.0,59242.995354791536,0.0014367516615088902,23949337.0,exact,1.0,1.0013521179587164,12.329886161660973,16.999070958308586,7.621973085892945
-41,baseline,41,900.000893831253,59170.0,59257.0,0.0014703396991718775,24299427.0,exact,1.0,1.0013857203210816,9.121483372078062,17.4,5.546807599990412
-42,baseline,42,900.0017001628876,59089.0,59228.0,0.002352383692396216,23229681.0,exact,1.0,1.002267573696145,6.27161596269632,27.799999999999997,3.0741917332088993
-43,baseline,43,127.60789799690248,59232.0,59237.0,8.44138303619665e-05,4041704.0,exact,1.0,1.0,7.154743066653622,1.0,5.706695056329854
-44,baseline,44,166.38699293136597,59201.0,59206.0,8.445803280349994e-05,5151689.0,exact,1.0,1.0000337815012499,8.967006538543707,1.6666666666666667,8.06421866121506
-45,baseline,45,900.0007989406586,59135.0,59247.0,0.001893971421324089,26922402.0,exact,1.0,1.0020634249471458,4.643201205090089,22.394318085736028,2.4893172787310425
-46,baseline,46,900.001415014267,59152.0,59254.0,0.001724371111712199,26485728.0,exact,1.0,1.001639704515104,10.462304857340868,20.4,5.688371299868259
-47,baseline,47,900.0020279884337,59123.0,59235.0,0.0018943558344468312,28222784.0,exact,1.0,1.0018435206169876,10.311550532796153,22.39924225766622,6.2834295235506294
-48,baseline,48,900.0011022090912,59176.0,59284.0,0.0018250642152223876,28675410.0,exact,0.9998817227920179,1.0016219503953505,8.789729840090889,21.602555089901312,5.076827636243375
-49,baseline,49,900.0012428760529,59150.0,59206.0,0.0009467455621301775,30531240.0,exact,1.0,1.0011329241279021,14.57737192393531,13.99644970414201,9.844566635787432
-50,ml-exact,0,688.3145689964294,59162.0,59167.0,8.451370812345763e-05,19372651.0,exact,1.0,1.0004734608295711,8.558594565557922,1.0,5.205738534633309
-51,ml-exact,1,900.0030159950256,59148.0,59261.0,0.0019104618922026104,23234502.0,exact,1.0,1.002012106455649,4.993398534832403,22.595796983837154,2.747498256687703
-52,ml-exact,2,900.0017671585083,59186.0,59272.0,0.0014530463285236373,24778548.0,exact,1.0,1.0013684512848238,6.423202323645158,17.2,4.000514059046721
-53,ml-exact,3,900.0023939609528,59145.0,59236.0,0.001538591596922817,23640467.0,exact,1.0,1.0014539306847,10.818054457684216,18.2,6.731047024432022
-54,ml-exact,4,900.0013728141785,59142.0,59232.0,0.0015217611849447095,24652247.0,exact,1.0,1.001454029012951,10.658828560240659,22.500000000000004,6.6796183454101925
-55,ml-exact,5,900.0034329891205,59126.0,59239.0,0.001911172749720935,23522114.0,exact,1.0,1.002012855209743,11.640224105291876,22.595795419950615,6.228055557100073
-56,ml-exact,6,900.002799987793,59125.0,59239.0,0.0019281183932346724,23569758.0,exact,1.0,1.0018433959073227,5.121598200346791,22.800000000000004,2.914563221568929
-57,ml-exact,7,900.002200126648,59105.0,59212.0,0.001810337534895525,24075549.0,exact,1.0,1.001725596345796,4.327834174506783,21.400000000000002,2.5356268779798863
-58,ml-exact,8,900.0022239685059,59169.0,59252.0,0.0014027615812334162,24905690.0,exact,1.0,1.0013181464832528,9.974688022708854,16.6,6.3369387111219675
-59,ml-exact,9,900.003427028656,59130.0,59251.0,0.0020463385760189413,23893376.0,exact,1.0,1.00206328535913,6.707537329143804,24.197544393708778,3.7113859920489083
-60,ml-exact,10,900.0009210109711,59127.0,59203.0,0.0012853687824513336,24863140.0,exact,1.0,1.0012007035107895,12.966979269407192,15.2,8.253782035385862
-61,ml-exact,11,900.0009968280792,59198.0,59269.0,0.0011993648434068718,25709342.0,exact,1.0,1.0014361989726954,4.8326570914944575,14.195442413595051,3.141602145679979
-62,ml-exact,12,900.0036079883575,59102.0,59225.0,0.002081147846096579,23773882.0,exact,1.0,1.0019963794474427,5.374184600052028,24.6,2.9563779750612973
-63,ml-exact,13,900.0016438961029,59150.0,59207.0,0.0009636517328825021,25793375.0,exact,1.0,1.0008790465725637,11.63541038097019,11.4,7.804576169232147
-64,ml-exact,14,900.0037429332733,59169.0,59264.0,0.0016055704845442714,24828279.0,exact,1.0,1.001690217023866,11.4157735555307,18.99678885903091,6.9265263057462905
-65,ml-exact,15,900.0010781288147,59083.0,59192.0,0.001844862312340267,24001071.0,exact,1.0,1.0017600866504197,7.002781294008916,21.799999999999997,4.03056357527279
-66,ml-exact,16,900.003424167633,59126.0,59231.0,0.001775868484253966,23278694.0,exact,1.0,1.0016911603050853,10.004023756326125,21.0,5.808924085978896
-67,ml-exact,17,900.0018711090088,59156.0,59189.0,0.0005578470484819798,26430086.0,exact,1.0,1.000557847048482,10.766817509906183,8.249442152951518,7.490198301150335
-68,ml-exact,18,900.0020909309387,59118.0,59207.0,0.00150546364897324,24853757.0,exact,1.0,1.0014377050844017,20.924913256879982,22.25,13.104215756109674
-69,ml-exact,19,735.9250810146332,59159.0,59164.0,8.451799388089724e-05,21528049.0,exact,1.0,1.0000005221863417,15.721584616209423,1.0062173397822212,10.893521233665195
-70,ml-exact,20,900.00168800354,59068.0,59189.0,0.0020484864901469495,24139737.0,exact,1.0,1.0020484864901469,4.918031848846873,24.197951513509857,2.7442580549228195
-71,ml-exact,21,422.6733708381653,59175.0,59180.0,8.449514152936207e-05,12565443.0,exact,1.0,1.0000168978860744,8.807689403027585,1.25,6.294255723613522
-72,ml-exact,22,900.0017290115356,59121.0,59161.96612870166,0.0006929200910278412,26541785.0,exact,1.0,1.0006082963282086,12.802478277171435,8.1932257403314,8.974074310751902
-73,ml-exact,23,233.35001611709595,59193.0,59198.0,8.44694474008751e-05,6863757.0,exact,1.0,1.0000506799560773,9.919110345181457,2.5,6.678664492261466
-74,ml-exact,24,900.0023059844971,59162.0,59243.0,0.0013691220716000134,25719403.0,exact,1.0,1.0015553414143463,7.770420581945018,16.195618809370877,4.9863131058549826
-75,ml-exact,25,900.0009150505066,59096.0,59214.0,0.0019967510491403816,23655105.0,exact,1.0,1.0019119811847514,4.275576469462738,23.6,2.4525357894455273
-76,ml-exact,26,900.0014140605927,59089.0,59206.0,0.0019800639712975344,23016733.0,exact,1.0,1.0019291951533202,8.53092687934989,23.399207974411485,4.841452120139745
-77,ml-exact,27,900.0011689662933,59153.0,59250.0,0.0016398153939783274,24005753.0,exact,1.0,1.0015720878340686,10.42323873273824,24.25,6.2229632974630915
-78,ml-exact,28,900.0011699199677,59112.0,59217.0,0.001776289078359724,24225157.0,exact,1.0,1.0019118841364374,4.24772671116024,20.995381648396265,2.428136836777139
-79,ml-exact,29,900.0013461112976,59182.0,59264.0,0.0013855564191815079,25392388.0,exact,1.0,1.001300961359758,8.059221674354108,16.4,5.1323384122333415
-80,ml-exact,30,900.0017020702362,59134.0,59244.0,0.0018601819596171408,23434918.0,exact,1.0,1.0017924177347899,10.270597713446762,27.5,5.884709019142258
-81,ml-exact,31,900.0009567737579,59082.0,59151.0,0.0011678683863105513,25773202.0,exact,1.0,1.0010831485775213,9.23309027048678,13.799999999999999,6.359741447062409
-82,ml-exact,32,868.0149350166321,59175.0,59180.0,8.449514152936207e-05,25540967.0,exact,1.0,1.0,15.843319820038522,1.0,10.823113209546014
-83,ml-exact,33,900.0023119449615,59088.0,59168.0,0.0013539128080151638,25040459.0,exact,1.0,1.0015912245657987,5.976701610806029,15.994855131329542,3.69561269154036
-84,ml-exact,34,262.6363501548767,59190.0,59195.0,8.447372867038352e-05,7849114.0,exact,1.0,1.0000004582681972,8.47518236991824,1.0054550306131191,5.891954135154916
-85,ml-exact,35,900.0022959709167,59183.0,59264.0,0.0013686362637919673,24384916.0,exact,1.0,1.0012840440629858,9.740120765958512,16.2,5.696062123614201
-86,ml-exact,36,900.0011420249939,59166.0,59257.0,0.0015380454991042152,24162289.0,exact,1.0,1.0014534146794882,8.189435219240814,18.2,4.939377542025706
-87,ml-exact,37,654.3477861881256,59202.0,59207.0,8.445660619573663e-05,19063867.0,exact,1.0,1.0007944557133197,6.137651391864456,1.0,3.891510328476056
-88,ml-exact,38,533.8162980079651,59212.0,59217.0,8.444234276835777e-05,15587617.0,exact,1.0,1.0,10.726456926772716,1.0,7.389996899424734
-89,ml-exact,39,900.0026030540466,59143.0,59182.0,0.0006594186970562873,26584736.0,exact,1.0,1.000608663307747,19.246002072656445,13.0,13.064895111218574
-90,ml-exact,40,900.0011110305786,59158.0,59225.0,0.0011325602623482875,26043597.0,exact,1.0,1.0010479522674645,12.329885968949256,13.399999999999999,8.288479776865733
-91,ml-exact,41,900.0014500617981,59170.0,59241.0,0.0011999323981747507,25600213.0,exact,1.0,1.0011153358681877,9.121489009458761,14.200000000000001,5.843736810327806
-92,ml-exact,42,900.0024211406708,59089.0,59220.0,0.002216994702905786,23418236.0,exact,1.0,1.0021321961620469,6.271620986793244,26.199999999999996,3.0991449050692967
-93,ml-exact,43,137.64503812789917,59232.0,59237.0,8.44138303619665e-05,4233463.0,exact,1.0,1.0,7.717507283356123,1.0,5.97744970271335
-94,ml-exact,44,156.3585011959076,59201.0,59206.0,8.445803280349994e-05,4787762.0,exact,1.0,1.0000337815012499,8.426546317589533,1.6666666666666667,7.494543957497499
-95,ml-exact,45,900.0022501945496,59135.0,59254.0,0.0020123446351568443,27046693.0,exact,1.0,1.0021818181818183,4.64320869226546,23.793962966094526,2.500809556941982
-96,ml-exact,46,900.0008149147034,59152.0,59252.0,0.0016905599134433324,27848476.0,exact,1.0,1.0016058961745862,10.462297881324526,20.0,5.981050308432905
-97,ml-exact,47,900.001188993454,59123.0,59237.0,0.0019281836172048102,27600532.0,exact,1.0,1.0018773466833542,10.311540920218778,22.799228726553117,6.144893346967609
-98,ml-exact,48,900.0019118785858,59183.0,59291.0,0.001824848351722623,28143324.0,exact,1.0,1.001740217611678,8.789737747610225,21.6,4.982624661999652
-99,ml-exact,49,900.0009059906006,59150.0,59206.0,0.0009467455621301775,28164567.0,exact,1.0,1.0011329241279021,14.577366467382253,13.99644970414201,9.081450887667835
-100,ml-heuristic,0,80.42378497123718,59134.0,59139.0,8.455372543714276e-05,3721403.0,heuristic,0.9995267232345086,1.0,1.0,1.000473500862448,1.0
-101,ml-heuristic,1,180.2385709285736,59137.0,59142.0,8.454943605526151e-05,8456603.0,heuristic,0.9998140258335024,1.0,1.0,1.0,1.0
-102,ml-heuristic,2,140.11730003356934,59186.0,59191.0,8.447943770486263e-05,6193841.0,heuristic,1.0,1.0,1.0,1.0,1.0
-103,ml-heuristic,3,83.19447803497314,59145.0,59150.0,8.453799983092401e-05,3512153.0,heuristic,1.0,1.0,1.0,1.0,1.0
-104,ml-heuristic,4,84.43717503547668,59142.0,59146.0,6.763383044198708e-05,3690667.0,heuristic,1.0,1.0,1.0,1.0,1.0
-105,ml-heuristic,5,77.31839394569397,59115.0,59120.0,8.45809016324114e-05,3776799.0,heuristic,0.999813956634983,1.0,1.0,1.0,1.0
-106,ml-heuristic,6,175.72694396972656,59125.0,59130.0,8.456659619450317e-05,8086892.0,heuristic,1.0,1.0,1.0,1.0,1.0
-107,ml-heuristic,7,207.95672011375427,59105.0,59110.0,8.459521191100583e-05,9494910.0,heuristic,1.0,1.0,1.0,1.0,1.0
-108,ml-heuristic,8,90.22860884666443,59169.0,59174.0,8.45037097128564e-05,3930240.0,heuristic,1.0,1.0,1.0,1.0,1.0
-109,ml-heuristic,9,134.17792296409607,59124.0,59129.0,8.456802652053312e-05,6437858.0,heuristic,0.999898528665652,1.0,1.0,1.0,1.0
-110,ml-heuristic,10,69.40713810920715,59127.0,59132.0,8.456373568758774e-05,3012333.0,heuristic,1.0,1.0,1.0,1.0,1.0
-111,ml-heuristic,11,186.23315906524658,59179.0,59184.0,8.448943037226044e-05,8183513.0,heuristic,0.9996790432109193,1.0,1.0,1.0,1.0
-112,ml-heuristic,12,167.46793699264526,59102.0,59107.0,8.459950593888532e-05,8041557.0,heuristic,1.0,1.0,1.0,1.0,1.0
-113,ml-heuristic,13,77.35022783279419,59150.0,59155.0,8.4530853761623e-05,3304904.0,heuristic,1.0,1.0,1.0,1.0,1.0
-114,ml-heuristic,14,78.83861207962036,59159.0,59164.0,8.451799388089724e-05,3584521.0,heuristic,0.9998309925805743,1.0,1.0,1.0,1.0
-115,ml-heuristic,15,128.52051782608032,59083.0,59088.0,8.462671157524161e-05,5954768.0,heuristic,1.0,1.0,1.0,1.0,1.0
-116,ml-heuristic,16,89.96414303779602,59126.0,59131.0,8.456516591685553e-05,4007402.0,heuristic,1.0,1.0,1.0,1.0,1.0
-117,ml-heuristic,17,83.59033393859863,59152.0,59156.0,6.76223965377333e-05,3528623.0,heuristic,0.9999323821759416,1.0,1.0,1.0,1.0
-118,ml-heuristic,18,43.01103091239929,59118.0,59122.0,6.766128759430292e-05,1896623.0,heuristic,1.0,1.0,1.0,1.0,1.0
-119,ml-heuristic,19,46.80985403060913,59159.0,59163.96910538342,8.399576367784492e-05,1976225.0,heuristic,1.0,1.0,1.0,1.0,1.0
-120,ml-heuristic,20,183.00037813186646,59063.0,59068.0,8.465536799688468e-05,8796453.0,heuristic,0.9999153517979278,1.0,1.0,1.0,1.0
-121,ml-heuristic,21,47.98913216590881,59175.0,59179.0,6.759611322348965e-05,1996335.0,heuristic,1.0,1.0,1.0,1.0,1.0
-122,ml-heuristic,22,70.29902410507202,59121.0,59126.0,8.457231778894132e-05,2957607.0,heuristic,1.0,1.0,1.0,1.0,1.0
-123,ml-heuristic,23,23.525296926498413,59193.0,59195.0,3.378777896035004e-05,1027714.0,heuristic,1.0,1.0,1.0,1.0,1.0
-124,ml-heuristic,24,115.82414317131042,59146.0,59151.0,8.453657052040713e-05,5158000.0,heuristic,0.9997295561340049,1.0,1.0,1.0,1.0
-125,ml-heuristic,25,210.498144865036,59096.0,59101.0,8.460809530255854e-05,9645162.0,heuristic,1.0,1.0,1.0,1.0,1.0
-126,ml-heuristic,26,105.49866700172424,59087.0,59092.0,8.462098261885016e-05,4754097.0,heuristic,0.9999661527526273,1.0,1.0,1.0,1.0
-127,ml-heuristic,27,86.34563517570496,59153.0,59157.0,6.762125335993103e-05,3857608.0,heuristic,1.0,1.0,1.0,1.0,1.0
-128,ml-heuristic,28,211.8783130645752,59099.0,59104.0,8.46038004027141e-05,9976850.0,heuristic,0.9997800784950602,1.0,1.0,1.0,1.0
-129,ml-heuristic,29,111.67348194122314,59182.0,59187.0,8.448514751106756e-05,4947528.0,heuristic,1.0,1.0,1.0,1.0,1.0
-130,ml-heuristic,30,87.62895083427429,59134.0,59138.0,6.764298034971421e-05,3982341.0,heuristic,1.0,1.0,1.0,1.0,1.0
-131,ml-heuristic,31,97.47559380531311,59082.0,59087.0,8.46281439355472e-05,4052555.0,heuristic,1.0,1.0,1.0,1.0,1.0
-132,ml-heuristic,32,54.787440061569214,59175.0,59180.0,8.449514152936207e-05,2359854.0,heuristic,1.0,1.0,1.0,1.0,1.0
-133,ml-heuristic,33,150.5851171016693,59069.0,59074.0,8.464676903282602e-05,6775726.0,heuristic,0.9996784457080964,1.0,1.0,1.0,1.0
-134,ml-heuristic,34,30.98887300491333,59190.0,59194.972872826496,8.401542197155456e-05,1332175.0,heuristic,1.0,1.0,1.0,1.0,1.0
-135,ml-heuristic,35,92.40155410766602,59183.0,59188.0,8.448371998715847e-05,4281013.0,heuristic,1.0,1.0,1.0,1.0,1.0
-136,ml-heuristic,36,109.89782786369324,59166.0,59171.0,8.450799445627557e-05,4891768.0,heuristic,1.0,1.0,1.0,1.0,1.0
-137,ml-heuristic,37,106.61208081245422,59155.0,59160.0,8.452370890034655e-05,4898835.0,heuristic,0.9992061079017601,1.0,1.0,1.0007945228636634,1.0
-138,ml-heuristic,38,49.7663209438324,59212.0,59217.0,8.444234276835777e-05,2109286.0,heuristic,1.0,1.0,1.0,1.0,1.0
-139,ml-heuristic,39,46.76309394836426,59143.0,59146.0,5.072451515817595e-05,2034822.0,heuristic,1.0,1.0,1.0,1.0,1.0
-140,ml-heuristic,40,72.99346590042114,59158.0,59163.0,8.451942256330505e-05,3142144.0,heuristic,1.0,1.0,1.0,1.0,1.0
-141,ml-heuristic,41,98.66826009750366,59170.0,59175.0,8.450228156160216e-05,4380795.0,heuristic,1.0,1.0,1.0,1.0,1.0
-142,ml-heuristic,42,143.50395584106445,59089.0,59094.0,8.461811843151856e-05,7556354.0,heuristic,1.0,1.0,1.0,1.0,1.0
-143,ml-heuristic,43,17.835427045822144,59232.0,59237.0,8.44138303619665e-05,708239.0,heuristic,1.0,1.0,1.0,1.0,1.0
-144,ml-heuristic,44,18.555466890335083,59201.0,59204.0,5.067481968209996e-05,638833.0,heuristic,1.0,1.0,1.0,1.0,1.0
-145,ml-heuristic,45,193.83196187019348,59120.0,59125.0,8.457374830852504e-05,10815175.0,heuristic,0.9997463431132155,1.0,1.0,1.0,1.0
-146,ml-heuristic,46,86.02324509620667,59152.0,59157.0,8.452799567216662e-05,4656118.0,heuristic,1.0,1.0,1.0,1.0,1.0
-147,ml-heuristic,47,87.28095984458923,59121.0,59126.0,8.457231778894132e-05,4491621.0,heuristic,0.999966172217242,1.0,1.0,1.0,1.0
-148,ml-heuristic,48,102.39235091209412,59183.0,59188.0,8.448371998715847e-05,5648293.0,heuristic,1.0,1.0,1.0,1.0,1.0
-149,ml-heuristic,49,61.73960900306702,59135.0,59139.0,6.764183647586032e-05,3101329.0,heuristic,0.9997464074387151,1.0,1.0,1.0,1.0
+,Solver,Instance,Wallclock Time,Lower Bound,Upper Bound,Gap,Nodes,Mode,Relative Lower Bound,Relative Upper Bound,Relative Wallclock Time,Relative Gap,Relative Nodes,Predicted LB,Predicted UB,Sense
+0,baseline,0,662.7372989654541,59162.0,59167.0,8.451370812345763e-05,18688107.0,exact,1.0,1.0004734608295711,8.70828628181939,1.0,5.622307810564691,,,
+1,baseline,1,900.0007548332214,59137.0,59256.0,0.002012276578115224,24175550.0,exact,1.0,1.0019275641675967,5.256438928065297,23.8,2.9939288096459404,,,
+2,baseline,2,900.0016160011293,59186.0,59285.0,0.0016726928665562802,24089218.0,exact,1.0,1.0015880792688077,6.615464163621432,19.8,3.971008553523482,,,
+3,baseline,3,900.0023140907288,59145.0,59231.0,0.0014540535970918927,24595759.0,exact,1.0,1.0013693998309383,9.839168761119028,17.2,6.1066754492159765,,,
+4,baseline,4,900.0024960041046,59142.0,59213.0,0.0012005004903452704,25467171.0,exact,1.0,1.0011162314042927,11.236705591195049,14.261938547000467,7.640381275476392,,,
+5,baseline,5,900.002925157547,59126.0,59244.0,0.0019957379156377904,23457042.0,exact,1.0,1.0021143794719125,10.760170783867167,29.494511720731996,5.847345591041515,,,
+6,baseline,6,900.0031039714813,59125.0,59236.97169757604,0.001893813066825174,24240772.0,exact,1.0,1.0018090934817527,5.582936655618509,22.394339515207683,3.3210931747954593,,,
+7,baseline,7,900.002781867981,59105.0,59212.0,0.001810337534895525,24042592.0,exact,1.0,1.001725596345796,1.7540923744921773,21.400000000000002,2.390273708531383,,,
+8,baseline,8,900.0021660327911,59169.0,59251.0,0.0013858608392908448,25512146.0,exact,1.0,1.0013181687594004,9.026100681465717,20.5,5.950915491512204,,,
+9,baseline,9,900.0015439987183,59130.0,59256.0,0.00213089802130898,23227790.0,exact,1.0,1.0021478462345041,7.880275979497338,25.197442922374428,4.198068271097029,,,
+10,baseline,10,900.0024099349976,59127.0,59201.0,0.0012515432881762985,25015636.0,exact,1.0,1.0011838122135597,13.04240249187423,18.5,8.325144625534431,,,
+11,baseline,11,900.0025849342346,59198.0,59289.0,0.0015372140950707794,24558832.0,exact,1.0,1.0017741281427412,4.941352404443008,18.19415858643873,2.9831824806949396,,,
+12,baseline,12,900.0022029876709,59102.0,59224.0,0.002064227944908802,24026788.0,exact,1.0,1.0019794609775492,5.378482195683288,24.400000000000002,2.947983888580514,,,
+13,baseline,13,900.0011007785797,59150.0,59206.0,0.0009467455621301775,24953207.0,exact,1.0,1.0008790614328702,12.451848934586094,13.999999999999998,8.0844140865203,,,
+14,baseline,14,900.0014700889587,59169.0,59250.0,0.0013689600973482733,25494260.0,exact,1.0,1.0014705136656357,10.286586243074352,20.246577599756627,6.714445655657852,,,
+15,baseline,15,900.0013790130615,59083.0,59196.0,0.0019125636816004605,23792716.0,exact,1.0,1.0018277822908204,7.486704871117682,22.6,4.211841162852367,,,
+16,baseline,16,900.0020098686218,59126.0,59233.0,0.0018096945506207078,23398798.0,exact,1.0,1.001724983511187,10.473065188128833,21.39999999999999,5.842727665213484,,,
+17,baseline,17,900.0023510456085,59156.0,59197.0,0.0006930826965988236,25573586.0,exact,1.0,1.0006930826965987,12.267049016770867,10.249306917303404,7.807679578926801,,,
+18,baseline,18,900.002711057663,59118.0,59211.0,0.0015731249365675427,24489136.0,exact,1.0,1.0014884224413512,19.84721287191386,18.599999999999998,12.51075303699155,,,
+19,baseline,19,724.1934628486632,59159.0,59164.0,8.451799388089724e-05,20931760.0,exact,1.0,1.0,16.225906582646804,1.0,11.203195934004649,,,
+20,baseline,20,900.0011439323425,59068.0,59191.0,0.0020823457709758246,23411794.0,exact,1.0,1.0020823457709758,4.553908811228339,24.597917654229025,2.465201726709367,,,
+21,baseline,21,380.06568694114685,59175.0,59180.0,8.449514152936208e-05,11618526.0,exact,1.0,1.0000168978860744,7.912557532546788,1.2500000000000002,5.757968140817527,,,
+22,baseline,22,900.0016028881073,59121.0,59154.94711904253,0.0005741973079365614,26352886.0,exact,1.0,1.0004895835849292,14.040381831195205,6.789423808503489,9.40925154833969,,,
+23,baseline,23,230.2515211105347,59193.0,59198.0,8.44694474008751e-05,6776049.0,exact,1.0,1.0000337860666262,8.514542938541073,1.6666666666666665,5.846961043264265,,,
+24,baseline,24,900.0010840892792,59162.0,59240.0,0.001318413846725939,24727727.0,exact,1.0,1.0015046237595306,8.166041819193602,15.595781075690478,4.940286958561307,,,
+25,baseline,25,900.0015320777893,59096.0,59210.0,0.0019290645728983352,23438919.0,exact,1.0,1.0018443004348487,4.510705225924555,22.800000000000004,2.4862311177206236,,,
+26,baseline,26,900.0015478134155,59089.0,59203.0,0.001929293100238623,23826788.0,exact,1.0,1.0018953816994127,8.894248013836016,28.49903535344988,4.939630736149807,,,
+27,baseline,27,900.0010070800781,59153.0,59249.0,0.0016229100806383447,24336831.0,exact,1.0,1.001538253490652,10.091974748981741,19.2,6.084119530266811,,,
+28,baseline,28,900.001277923584,59112.0,59208.0,0.0016240357287860333,25111591.0,exact,1.0,1.001759610178668,4.691858473111718,19.195777507105156,2.8027693088636902,,,
+29,baseline,29,900.0012440681458,59182.0,59263.0,0.0013686593896792946,24919871.0,exact,1.0,1.0012840657576834,7.56448716001105,16.200000000000003,4.595493258310103,,,
+30,baseline,30,900.0012910366057,59134.0,59241.0,0.001809449724354855,23615391.0,exact,1.0,1.0017247501648658,9.031820270959846,21.4,5.0375202116086095,,,
+31,baseline,31,900.0023548603058,59082.0,59169.0,0.0014725297044785213,26213904.0,exact,1.0,1.0013883344383072,10.04484347330425,17.513740798402758,6.772202916754611,,,
+32,baseline,32,875.9193549156189,59175.0,59180.0,8.449514152936208e-05,24935695.0,exact,1.0,1.0,17.593042802030894,1.0000000000000002,11.640863122484049,,,
+33,baseline,33,900.0018489360809,59088.0,59177.0,0.0015062279989168698,25210167.0,exact,1.0,1.0017435758540136,6.884821185789175,17.794276333604117,4.149329955955837,,,
+34,baseline,34,232.1541509628296,59190.0,59195.0,8.447372867038352e-05,7309410.0,exact,1.0,1.0000337877789605,7.0924172424290814,1.6666666666666667,5.371410472817808,,,
+35,baseline,35,900.0025398731233,59183.0,59262.0,0.001334842775797104,23927493.0,exact,1.0,1.0012671701556084,12.033207650833896,19.75,7.544694464615838,,,
+36,baseline,36,900.0010929107666,59166.0,59254.0,0.00148734070243045,25589946.0,exact,1.0,1.001402714167413,6.350860539510311,17.599999999999998,3.8428016019966393,,,
+37,baseline,37,622.9371509552003,59202.0,59207.0,8.445660619573664e-05,18595087.0,exact,1.0,1.0007944557133197,5.973803009115679,1.0000000000000002,3.967704381695003,,,
+38,baseline,38,557.924427986145,59212.0,59217.0,8.444234276835778e-05,16270407.0,exact,1.0,1.0000168873277493,11.776853444610294,1.25,8.26095170688216,,,
+39,baseline,39,900.0010092258452,59143.0,59185.0,0.0007101432122144633,26304077.0,exact,1.0,1.0006424670735625,19.899221771336656,10.5,13.274381840230484,,,
+40,baseline,40,900.0011250972748,59158.0,59242.995354791536,0.0014367516615088902,23949337.0,exact,1.0,1.0013521179587164,11.618267974647784,16.999070958308586,7.043833563281406,,,
+41,baseline,41,900.000893831253,59170.0,59257.0,0.0014703396991718775,24299427.0,exact,1.0,1.0013857203210816,9.82799588949917,17.4,5.913918333433118,,,
+42,baseline,42,900.0017001628876,59089.0,59228.0,0.002352383692396216,23229681.0,exact,1.0,1.002267573696145,5.808712131855351,27.799999999999997,2.898764108739463,,,
+43,baseline,43,127.60789799690248,59232.0,59237.0,8.44138303619665e-05,4041704.0,exact,1.0,1.0000168816260382,7.326284526634964,1.25,5.803235519206498,,,
+44,baseline,44,166.38699293136597,59201.0,59206.0,8.445803280349994e-05,5151689.0,exact,1.0,1.0000168904653324,11.73610231262945,1.25,8.75222174086627,,,
+45,baseline,45,900.0007989406586,59135.0,59247.0,0.001893971421324089,26922402.0,exact,1.0,1.0020634249471458,4.661659000381325,22.394318085736028,2.560992168457917,,,
+46,baseline,46,900.001415014267,59152.0,59254.0,0.001724371111712199,26485728.0,exact,1.0,1.001639704515104,10.21700063178535,20.4,6.123151372348114,,,
+47,baseline,47,900.0020279884337,59123.0,59235.0,0.0018943558344468312,28222784.0,exact,1.0,1.0018435206169876,10.41166170663056,22.39924225766622,6.824112904473778,,,
+48,baseline,48,900.0011022090912,59176.0,59284.0,0.0018250642152223876,28675410.0,exact,0.9998817227920179,1.0016219503953505,9.824748557639392,21.602555089901312,6.1253016948312595,,,
+49,baseline,49,900.0012428760529,59150.0,59206.0,0.0009467455621301775,30531240.0,exact,1.0,1.001115995941833,12.802607222912103,11.197159763313609,9.326024324264884,,,
+50,ml-exact,0,649.376060962677,59162.0,59167.0,8.451370812345763e-05,18101461.0,exact,1.0,1.0004734608295711,8.532721264142948,1.0,5.445815649649917,59126.38771406158,59263.992667692604,max
+51,ml-exact,1,900.0008749961853,59137.0,59256.99395246509,0.0020290842021930574,23342139.0,exact,1.0,1.0019443703707194,5.256439629875021,23.998790493018166,2.8907182021033684,59159.91471896955,59292.24515179818,max
+52,ml-exact,2,900.0023529529572,59186.0,59272.0,0.0014530463285236373,24785817.0,exact,1.0,1.0013684512848238,6.615469580587714,17.2,4.085840034868203,59194.00902156645,59323.12664303628,max
+53,ml-exact,3,900.0030598640442,59145.0,59228.0,0.0014033307971933384,24207954.0,exact,1.0,1.0013186813186814,9.839176914197518,16.599999999999998,6.010390586749109,59141.813764752675,59274.22541262452,max
+54,ml-exact,4,900.0010681152344,59142.0,59214.0,0.0012174089479557674,24895987.0,exact,1.0,1.0011331384387514,11.236687763725765,14.462810920901886,7.469020917529618,59144.93070046487,59273.654326628006,max
+55,ml-exact,5,900.0023910999298,59126.0,59241.96239661033,0.0019612758618937826,23775703.0,exact,1.0,1.0020799133376805,10.760164398831064,28.98520564396274,5.926781054105736,59145.04845907292,59279.36037916677,max
+56,ml-exact,6,900.0027949810028,59125.0,59236.0,0.0018773784355179705,23994400.0,exact,1.0,1.0017926602401488,5.582934738875933,22.200000000000003,3.2873391191217904,59136.974634353304,59268.30857737715,max
+57,ml-exact,7,900.0025460720062,59105.0,59212.0,0.001810337534895525,24113420.0,exact,1.0,1.001725596345796,1.7540919149292407,21.400000000000002,2.397315308132119,59125.024194597165,59260.190615193496,max
+58,ml-exact,8,900.0025360584259,59169.0,59247.0,0.0013182578715205597,26072662.0,exact,1.0,1.0012505703614825,9.026104392444157,19.5,6.081660406018433,59155.83957873982,59292.27671868388,max
+59,ml-exact,9,900.0029451847076,59130.0,59260.0,0.002198545577541011,23411285.0,exact,1.0,1.0022154949348037,7.880288248067729,25.99736174530695,4.231232189722303,59169.22723451526,59303.04692137199,max
+60,ml-exact,10,900.002711057663,59127.0,59199.0,0.0012177177939012634,25692461.0,exact,1.0,1.001149989007458,13.042406855599213,18.0,8.550390388271678,59122.74947289353,59256.99939978048,max
+61,ml-exact,11,900.0020880699158,59198.0,59271.0,0.0012331497685732625,25044283.0,exact,1.0,1.0014699918896999,4.941349676471181,14.59531403087942,3.042150631885348,59194.32665087494,59329.026081343145,max
+62,ml-exact,12,900.00151014328,59102.0,59222.0,0.0020303881425332475,23860011.0,exact,1.0,1.001945624037762,5.378478055192067,24.0,2.9275210656269923,59122.0422679371,59259.06427666924,max
+63,ml-exact,13,900.0019900798798,59150.0,59203.96517006869,0.0009123443798594788,26120169.0,exact,1.0,1.0008446625768113,12.451861238399319,13.491292517172042,8.462489899830945,59136.5588570761,59273.99511476752,max
+64,ml-exact,14,900.0015881061554,59169.0,59254.0,0.0014365630651185586,25996193.0,exact,1.0,1.001538123489343,10.28658759195445,21.246408592337204,6.8466401908701435,59154.03941864104,59289.795816422404,max
+65,ml-exact,15,900.0014340877533,59083.0,59198.0,0.001946414366230557,23870719.0,exact,1.0,1.0018616301110208,7.486705329259161,23.0,4.2256494328382725,59098.66203099143,59228.46969562256,max
+66,ml-exact,16,900.0031027793884,59126.0,59230.0,0.001758955451070595,23581309.0,exact,1.0,1.0016742487020345,10.47307790601788,20.799999999999997,5.888301034790237,59145.19863458289,59278.22282794401,max
+67,ml-exact,17,900.001091003418,59156.0,59189.0,0.0005578470484819798,25974343.0,exact,1.0,1.000557847048482,12.267031842372049,8.249442152951518,7.930031690398847,59127.14368529404,59267.37100160227,max
+68,ml-exact,18,900.0016350746155,59118.0,59207.0,0.00150546364897324,24423315.0,exact,1.0,1.001420766875835,19.84718914391357,17.8,12.477127094628871,59117.71413049835,59253.828178881624,max
+69,ml-exact,19,765.9083199501038,59159.0,59164.0,8.451799388089724e-05,22220414.0,exact,1.0,1.0,17.160548234580467,1.0,11.892915444124142,59144.031479967074,59274.181598455296,max
+70,ml-exact,20,900.0015428066254,59068.0,59191.0,0.0020823457709758246,23475405.0,exact,1.0,1.0020823457709758,4.55391082948923,24.597917654229025,2.471899801493286,59082.22244394464,59224.2971810249,max
+71,ml-exact,21,428.18276500701904,59175.0,59180.0,8.449514152936207e-05,12999314.0,exact,1.0,1.0000168978860744,8.91430318224869,1.25,6.442266072691428,59137.98908684254,59265.43858161565,max
+72,ml-exact,22,900.0029540061951,59121.0,59157.0,0.0006089206880803775,26135751.0,exact,1.0,1.0005243040286844,14.040402909173055,7.199999999999999,9.33172387888638,59089.5855153968,59226.64120575328,max
+73,ml-exact,23,287.76060605049133,59193.0,59198.0,8.44694474008751e-05,7976958.0,exact,1.0,1.0000337860666262,10.641189358576659,1.6666666666666665,6.883209178350868,59140.59510257357,59271.35823619222,max
+74,ml-exact,24,900.0017418861389,59162.0,59248.0,0.0014536357797234711,25158901.0,exact,1.0,1.001639870839039,8.166047787627152,17.195348365504884,5.026430067835795,59150.82751230766,59285.37521566199,max
+75,ml-exact,25,900.0040528774261,59096.0,59209.0,0.001912142953837823,25156445.0,exact,1.0,1.0018273802473732,4.510717859885376,22.6,2.6684138620141735,59123.050715683305,59257.270874657275,max
+76,ml-exact,26,900.0013389587402,59089.0,59199.0,0.0018615986054934083,23531336.0,exact,1.0,1.0018276894958622,8.894245949833698,27.499069200697253,4.878379350513735,59118.02329883662,59245.3612305393,max
+77,ml-exact,27,900.0014967918396,59153.0,59246.0,0.0015721941406183963,25053692.0,exact,1.0,1.001487541837114,10.091980240263075,18.599999999999998,6.263332181683365,59150.16240797118,59285.64193535254,max
+78,ml-exact,28,900.001298904419,59112.0,59215.0,0.0017424550006766815,24700106.0,exact,1.0,1.0018780454791554,4.691858582488349,20.59546961699824,2.756842408849359,59105.239747395564,59244.63088727762,max
+79,ml-exact,29,900.0012950897217,59182.0,59264.0,0.0013855564191815079,24368468.0,exact,1.0,1.001300961359758,7.564487588846076,16.4,4.493808591920299,59171.61319933031,59313.94235456237,max
+80,ml-exact,30,900.0028159618378,59134.0,59240.0,0.0017925389792674265,24191195.0,exact,1.0,1.001707840849524,9.031835574105251,21.2,5.160347916977751,59148.03866371211,59281.43814639009,max
+81,ml-exact,31,900.0012450218201,59082.0,59151.0,0.0011678683863105513,27104772.0,exact,1.0,1.0010836987334635,10.044831086499027,13.890208219422876,7.002353254836392,59069.41377677144,59203.823126466195,max
+82,ml-exact,32,900.0074319839478,59175.0,59197.964519141264,0.0003880780589989647,25690960.0,exact,1.0,1.0003035572683552,18.076857400376596,4.592903828252747,11.99344749946664,59157.64838384942,59290.523875622814,max
+83,ml-exact,33,900.0013158321381,59088.0,59177.0,0.0015062279989168698,24765342.0,exact,1.0,1.0017435758540136,6.884817107658309,17.794276333604117,4.076116410894511,59081.01088134223,59219.82627379965,max
+84,ml-exact,34,239.74270606040955,59190.0,59195.0,8.447372867038352e-05,7385996.0,exact,1.0,1.0000337877789605,7.324251128646419,1.6666666666666667,5.427690643511643,59143.23414106734,59275.920682982185,max
+85,ml-exact,35,900.0009059906006,59183.0,59259.953906894,0.0013002704643901015,23480392.0,exact,1.0,1.0012326001806815,12.033185805509241,19.238476723499844,7.403716868683651,59171.487583005524,59304.98468958104,max
+86,ml-exact,36,900.0016748905182,59166.0,59246.0,0.0013521279113004091,25394548.0,exact,1.0,1.0012675128018793,6.350864646252256,16.0,3.813458994262065,59158.08309355407,59296.56640928705,max
+87,ml-exact,37,662.0322141647339,59202.0,59207.0,8.445660619573663e-05,20024242.0,exact,1.0,1.0007944557133197,6.348714355925809,1.0,4.272648615385403,59175.74869590455,59307.463498356396,max
+88,ml-exact,38,446.4717228412628,59212.0,59217.0,8.444234276835777e-05,13956868.0,exact,1.0,1.0000168873277493,9.424272864415235,1.25,7.086301684237463,59166.58497608687,59301.825104164076,max
+89,ml-exact,39,900.00270819664,59143.0,59184.0,0.0006932350404950712,26147788.0,exact,1.0,1.000625560045311,19.899259335957453,10.249999999999998,13.195510421802544,59114.89526526199,59248.56148321837,max
+90,ml-exact,40,900.0016450881958,59158.0,59249.0,0.0015382534906521518,24805820.0,exact,1.0,1.0014536112097088,11.618274687299241,18.2,7.2957371421479085,59155.37108495968,59280.88309711401,max
+91,ml-exact,41,900.002336025238,59170.0,59245.0,0.0012675342234240324,25030081.0,exact,1.0,1.0011829319814112,9.82801163823526,15.0,6.09174261241699,59151.28565990848,59290.71555008509,max
+92,ml-exact,42,900.0009651184082,59089.0,59214.0,0.002115452960787964,22815014.0,exact,1.0,1.0020306630114733,5.808707387795664,24.999999999999996,2.8470190237906574,59118.99827325628,59249.97235571583,max
+93,ml-exact,43,155.91705012321472,59232.0,59237.0,8.44138303619665e-05,4841747.0,exact,1.0,1.0000168816260382,8.951582854095786,1.25,6.951968319652182,59161.307350621355,59293.05481512429,max
+94,ml-exact,44,166.24281811714172,59201.0,59206.0,8.445803280349994e-05,5152172.0,exact,1.0,1.0000168904653324,11.72593294577673,1.25,8.753042311188128,59149.268537538504,59278.50295984831,max
+95,ml-exact,45,900.0014069080353,59135.0,59246.0,0.0018770609622051238,26599239.0,exact,1.0,1.002046511627907,4.661662149419189,22.194368817113382,2.5302513039490457,59157.45644175721,59292.66862156513,max
+96,ml-exact,46,900.0008680820465,59152.0,59255.0,0.0017412767108466324,25313316.0,exact,1.0,1.0016566086853627,10.21699442289862,20.599999999999998,5.852105164112592,59168.404124939494,59297.86061218224,max
+97,ml-exact,47,900.0009942054749,59123.0,59235.0,0.0018943558344468312,26222277.0,exact,1.0,1.0018435206169876,10.411649747325901,22.39924225766622,6.340401388480525,59155.45167739807,59284.172466642885,max
+98,ml-exact,48,900.0013608932495,59176.0,59288.0,0.00189265918615655,27293583.0,exact,0.9998817227920179,1.0016895316618233,9.82475138153239,22.40264972286062,5.830132165779587,59191.94394017174,59332.08571744459,max
+99,ml-exact,49,900.0012040138245,59150.0,59203.0,0.0008960270498732037,30493377.0,exact,1.0,1.0010652688535677,12.802606670093036,10.59731191885038,9.314458752116828,59139.98187390398,59273.225027033564,max
+100,ml-heuristic,0,76.10421586036682,59134.0,59139.0,8.455372543714276e-05,3323921.0,heuristic,0.9995267232345086,1.0,1.0,1.000473500862448,1.0,59126.38771406158,59263.992667692604,max
+101,ml-heuristic,1,171.21872186660767,59137.0,59142.0,8.454943605526151e-05,8074858.0,heuristic,1.0,1.0,1.0,1.0,1.0,59159.91471896955,59292.24515179818,max
+102,ml-heuristic,2,136.04512000083923,59186.0,59191.0,8.447943770486263e-05,6066272.0,heuristic,1.0,1.0,1.0,1.0,1.0,59194.00902156645,59323.12664303628,max
+103,ml-heuristic,3,91.47137689590454,59145.0,59150.0,8.453799983092401e-05,4027684.0,heuristic,1.0,1.0,1.0,1.0,1.0,59141.813764752675,59274.22541262452,max
+104,ml-heuristic,4,80.09487199783325,59142.0,59146.97828536885,8.417512713219175e-05,3333233.0,heuristic,1.0,1.0,1.0,1.0,1.0,59144.93070046487,59273.654326628006,max
+105,ml-heuristic,5,83.6420669555664,59115.0,59119.0,6.766472130592912e-05,4011571.0,heuristic,0.999813956634983,1.0,1.0,1.0,1.0,59145.04845907292,59279.36037916677,max
+106,ml-heuristic,6,161.20603895187378,59125.0,59130.0,8.456659619450317e-05,7299034.0,heuristic,1.0,1.0,1.0,1.0,1.0,59136.974634353304,59268.30857737715,max
+107,ml-heuristic,7,513.0874490737915,59105.0,59110.0,8.459521191100583e-05,10058510.0,heuristic,1.0,1.0,1.0,1.0,1.0,59125.024194597165,59260.190615193496,max
+108,ml-heuristic,8,99.7110710144043,59169.0,59173.0,6.760296777028511e-05,4287096.0,heuristic,1.0,1.0,1.0,1.0,1.0,59155.83957873982,59292.27671868388,max
+109,ml-heuristic,9,114.2093939781189,59124.0,59129.0,8.456802652053312e-05,5532971.0,heuristic,0.999898528665652,1.0,1.0,1.0,1.0,59169.22723451526,59303.04692137199,max
+110,ml-heuristic,10,69.00587606430054,59127.0,59131.0,6.765098855007019e-05,3004829.0,heuristic,1.0,1.0,1.0,1.0,1.0,59122.74947289353,59256.99939978048,max
+111,ml-heuristic,11,182.13689517974854,59179.0,59184.0,8.448943037226044e-05,8232427.0,heuristic,0.9996790432109193,1.0,1.0,1.0,1.0,59194.32665087494,59329.026081343145,max
+112,ml-heuristic,12,167.33386301994324,59102.0,59107.0,8.459950593888532e-05,8150244.0,heuristic,1.0,1.0,1.0,1.0,1.0,59122.0422679371,59259.06427666924,max
+113,ml-heuristic,13,72.27851104736328,59150.0,59154.0,6.76246830092984e-05,3086582.0,heuristic,1.0,1.0,1.0,1.0,1.0,59136.5588570761,59273.99511476752,max
+114,ml-heuristic,14,87.49272584915161,59159.0,59163.0,6.761439510471779e-05,3796927.0,heuristic,0.9998309925805743,1.0,1.0,1.0,1.0,59154.03941864104,59289.795816422404,max
+115,ml-heuristic,15,120.21328401565552,59083.0,59088.0,8.462671157524161e-05,5649006.0,heuristic,1.0,1.0,1.0,1.0,1.0,59098.66203099143,59228.46969562256,max
+116,ml-heuristic,16,85.93491911888123,59126.0,59131.0,8.456516591685553e-05,4004773.0,heuristic,1.0,1.0,1.0,1.0,1.0,59145.19863458289,59278.22282794401,max
+117,ml-heuristic,17,73.36747002601624,59152.0,59156.0,6.76223965377333e-05,3275440.0,heuristic,0.9999323821759416,1.0,1.0,1.0,1.0,59127.14368529404,59267.37100160227,max
+118,ml-heuristic,18,45.34655404090881,59118.0,59123.0,8.457660949287865e-05,1957447.0,heuristic,1.0,1.0,1.0,1.0,1.0,59117.71413049835,59253.828178881624,max
+119,ml-heuristic,19,44.6319260597229,59159.0,59164.0,8.451799388089724e-05,1868374.0,heuristic,1.0,1.0,1.0,1.0,1.0,59144.031479967074,59274.181598455296,max
+120,ml-heuristic,20,197.63266706466675,59063.0,59068.0,8.465536799688468e-05,9496908.0,heuristic,0.9999153517979278,1.0,1.0,1.0,1.0,59082.22244394464,59224.2971810249,max
+121,ml-heuristic,21,48.03322887420654,59175.0,59179.0,6.759611322348965e-05,2017817.0,heuristic,1.0,1.0,1.0,1.0,1.0,59137.98908684254,59265.43858161565,max
+122,ml-heuristic,22,64.1009349822998,59121.0,59126.0,8.457231778894132e-05,2800742.0,heuristic,1.0,1.0,1.0,1.0,1.0,59089.5855153968,59226.64120575328,max
+123,ml-heuristic,23,27.042146921157837,59193.0,59196.0,5.068166844052506e-05,1158901.0,heuristic,1.0,1.0,1.0,1.0,1.0,59140.59510257357,59271.35823619222,max
+124,ml-heuristic,24,110.21264696121216,59146.0,59151.0,8.453657052040713e-05,5005322.0,heuristic,0.9997295561340049,1.0,1.0,1.0,1.0,59150.82751230766,59285.37521566199,max
+125,ml-heuristic,25,199.52568101882935,59096.0,59101.0,8.460809530255854e-05,9427490.0,heuristic,1.0,1.0,1.0,1.0,1.0,59123.050715683305,59257.270874657275,max
+126,ml-heuristic,26,101.18916702270508,59087.0,59091.0,6.769678609508014e-05,4823597.0,heuristic,0.9999661527526273,1.0,1.0,1.0,1.0,59118.02329883662,59245.3612305393,max
+127,ml-heuristic,27,89.17987108230591,59153.0,59158.0,8.452656669991379e-05,4000058.0,heuristic,1.0,1.0,1.0,1.0,1.0,59150.16240797118,59285.64193535254,max
+128,ml-heuristic,28,191.82191514968872,59099.0,59104.0,8.46038004027141e-05,8959564.0,heuristic,0.9997800784950602,1.0,1.0,1.0,1.0,59105.239747395564,59244.63088727762,max
+129,ml-heuristic,29,118.9771659374237,59182.0,59187.0,8.448514751106756e-05,5422676.0,heuristic,1.0,1.0,1.0,1.0,1.0,59171.61319933031,59313.94235456237,max
+130,ml-heuristic,30,99.64783000946045,59134.0,59139.0,8.455372543714276e-05,4687900.0,heuristic,1.0,1.0,1.0,1.0,1.0,59148.03866371211,59281.43814639009,max
+131,ml-heuristic,31,89.59844493865967,59082.0,59086.96752812557,8.407853704291519e-05,3870809.0,heuristic,1.0,1.0,1.0,1.0,1.0,59069.41377677144,59203.823126466195,max
+132,ml-heuristic,32,49.78782606124878,59175.0,59180.0,8.449514152936207e-05,2142083.0,heuristic,1.0,1.0,1.0,1.0,1.0,59157.64838384942,59290.523875622814,max
+133,ml-heuristic,33,130.72261786460876,59069.0,59074.0,8.464676903282602e-05,6075720.0,heuristic,0.9996784457080964,1.0,1.0,1.0,1.0,59081.01088134223,59219.82627379965,max
+134,ml-heuristic,34,32.732726097106934,59190.0,59193.0,5.0684237202230105e-05,1360799.0,heuristic,1.0,1.0,1.0,1.0,1.0,59143.23414106734,59275.920682982185,max
+135,ml-heuristic,35,74.79323601722717,59183.0,59187.0,6.758697598972678e-05,3171433.0,heuristic,1.0,1.0,1.0,1.0,1.0,59171.487583005524,59304.98468958104,max
+136,ml-heuristic,36,141.71325087547302,59166.0,59171.0,8.450799445627557e-05,6659190.0,heuristic,1.0,1.0,1.0,1.0,1.0,59158.08309355407,59296.56640928705,max
+137,ml-heuristic,37,104.27815413475037,59155.0,59160.0,8.452370890034655e-05,4686611.0,heuristic,0.9992061079017601,1.0,1.0,1.0007945228636634,1.0,59175.74869590455,59307.463498356396,max
+138,ml-heuristic,38,47.3746600151062,59212.0,59216.0,6.755387421468622e-05,1969556.0,heuristic,1.0,1.0,1.0,1.0,1.0,59166.58497608687,59301.825104164076,max
+139,ml-heuristic,39,45.22795009613037,59143.0,59147.0,6.763268687756793e-05,1981567.0,heuristic,1.0,1.0,1.0,1.0,1.0,59114.89526526199,59248.56148321837,max
+140,ml-heuristic,40,77.46431112289429,59158.0,59163.0,8.451942256330505e-05,3400043.0,heuristic,1.0,1.0,1.0,1.0,1.0,59155.37108495968,59280.88309711401,max
+141,ml-heuristic,41,91.57522082328796,59170.0,59175.0,8.450228156160216e-05,4108854.0,heuristic,1.0,1.0,1.0,1.0,1.0,59151.28565990848,59290.71555008509,max
+142,ml-heuristic,42,154.93997287750244,59089.0,59094.0,8.461811843151856e-05,8013650.0,heuristic,1.0,1.0,1.0,1.0,1.0,59118.99827325628,59249.97235571583,max
+143,ml-heuristic,43,17.417819023132324,59232.0,59236.0,6.75310642895732e-05,696457.0,heuristic,1.0,1.0,1.0,1.0,1.0,59161.307350621355,59293.05481512429,max
+144,ml-heuristic,44,14.177363872528076,59201.0,59205.0,6.756642624279995e-05,588615.0,heuristic,1.0,1.0,1.0,1.0,1.0,59149.268537538504,59278.50295984831,max
+145,ml-heuristic,45,193.06448602676392,59120.0,59125.0,8.457374830852504e-05,10512489.0,heuristic,0.9997463431132155,1.0,1.0,1.0,1.0,59157.45644175721,59292.66862156513,max
+146,ml-heuristic,46,88.08861303329468,59152.0,59157.0,8.452799567216662e-05,4325506.0,heuristic,1.0,1.0,1.0,1.0,1.0,59168.404124939494,59297.86061218224,max
+147,ml-heuristic,47,86.44172787666321,59121.0,59126.0,8.457231778894132e-05,4135744.0,heuristic,0.999966172217242,1.0,1.0,1.0,1.0,59155.45167739807,59284.172466642885,max
+148,ml-heuristic,48,91.60550999641418,59183.0,59188.0,8.448371998715847e-05,4681469.0,heuristic,1.0,1.0,1.0,1.0,1.0,59191.94394017174,59332.08571744459,max
+149,ml-heuristic,49,70.29827809333801,59135.0,59140.0,8.45522955948254e-05,3273768.0,heuristic,0.9997464074387151,1.0,1.0,1.0,1.0,59139.98187390398,59273.225027033564,max
diff --git a/benchmark/knapsack/ChallengeA/performance.png b/benchmark/knapsack/ChallengeA/performance.png
index c250cba..ba12ed6 100644
Binary files a/benchmark/knapsack/ChallengeA/performance.png and b/benchmark/knapsack/ChallengeA/performance.png differ
diff --git a/benchmark/tsp/ChallengeA/benchmark_ml.csv b/benchmark/tsp/ChallengeA/benchmark_ml.csv
index d6d2057..01f7d06 100644
--- a/benchmark/tsp/ChallengeA/benchmark_ml.csv
+++ b/benchmark/tsp/ChallengeA/benchmark_ml.csv
@@ -1,151 +1,151 @@
-,Solver,Instance,Wallclock Time,Lower Bound,Upper Bound,Gap,Nodes,Mode,Sense,Relative Lower Bound,Relative Upper Bound,Relative Wallclock Time,Relative Gap,Relative Nodes
-0,baseline,0,36.53329420089722,13540.0,13540.0,0.0,850.0,exact,min,1.0,1.0,348.9598096149029,,850.0
-1,baseline,1,18.817906141281128,13567.0,13567.0,0.0,210.0,exact,min,1.0,1.0000000014073693,177.99270917430778,,210.0
-2,baseline,2,41.11200523376465,13562.0,13562.0,0.0,454.0,exact,min,1.0,1.0,365.3000762647233,,454.0
-3,baseline,3,32.869613885879524,13522.0,13522.0,0.0,977.0,exact,min,1.0,1.0,316.7180565733886,,977.0
-4,baseline,4,26.034526586532593,13534.0,13534.0,0.0,396.0,exact,min,1.0,1.0,219.6896066794085,,396.0
-5,baseline,5,49.523164987564094,13532.0,13532.0,0.0,591.0,exact,min,1.0,1.0000000027178717,491.9014114192342,,591.0
-6,baseline,6,43.27228236198425,13535.0,13535.0,0.0,2292.0,exact,min,1.0,1.0000000002532266,368.89281003241837,,2292.0
-7,baseline,7,38.228996753692634,13613.0,13613.0,0.0,104.0,exact,min,1.0,1.0,380.2892867561434,,104.0
-8,baseline,8,57.10530495643616,13580.0,13580.0,0.0,2520.0,exact,min,1.0,1.0,559.2311153241792,,2520.0
-9,baseline,9,32.913992881774895,13583.000000000002,13584.0,7.362143856277559e-05,1150.0,exact,min,0.9999263839811544,1.0,239.86810765728976,inf,1150.0
-10,baseline,10,54.779502391815186,13578.0,13578.0,0.0,5650.0,exact,min,1.0,1.0,478.5071059054823,,5650.0
-11,baseline,11,15.760047912597654,13575.0,13575.0,0.0,137.0,exact,min,1.0,1.0,139.88038022363108,,137.0
-12,baseline,12,32.832256078720086,13544.0,13544.0,0.0,995.0,exact,min,1.0,1.0,261.2345047377856,,995.0
-13,baseline,13,18.5905544757843,13534.0,13534.0,0.0,1.0,exact,min,1.0,1.0000000042502133,190.9762009728284,,1.0
-14,baseline,14,26.83425283432007,13551.0,13551.0,0.0,180.0,exact,min,1.0,1.0,213.5737444235079,,180.0
-15,baseline,15,43.79837608337402,13593.999998910032,13593.999998910032,0.0,866.0,exact,min,0.9999999999198199,1.0,348.9666161368636,,866.0
-16,baseline,16,88.94579243659973,13594.0,13594.0,0.0,3845.0,exact,min,1.0,1.0,709.3811843628959,,3845.0
-17,baseline,17,46.35858511924744,13543.0,13543.0,0.0,609.0,exact,min,1.0,1.0,415.8431066009389,,609.0
-18,baseline,18,26.682329416275024,13524.0,13525.0,7.394262052647145e-05,1.0,exact,min,0.9999260629944637,1.0000000001478944,312.26384575677673,inf,1.0
-19,baseline,19,22.814379453659054,13564.0,13564.0,0.0,212.0,exact,min,1.0,1.0,257.51619526897923,,212.0
-20,baseline,20,53.29448294639587,13569.0,13569.0,0.0,553.0,exact,min,1.0,1.0,468.7047494637431,,553.0
-21,baseline,21,47.91645574569702,13566.0,13566.0,0.0,427.0,exact,min,1.0,1.0,488.39067622178965,,427.0
-22,baseline,22,23.47979474067688,13565.0,13565.0,0.0,1.0,exact,min,1.0,1.0,208.09328777659448,,1.0
-23,baseline,23,34.002822875976555,13579.0,13580.0,7.364312541424258e-05,795.0,exact,min,0.9999263622974963,1.0,254.5962076069221,inf,795.0
-24,baseline,24,26.307467222213745,13543.0,13543.0,0.0,72.0,exact,min,1.0,1.00000000048014,270.9070252194921,,72.0
-25,baseline,25,30.169880151748657,13541.0,13542.0,7.384978952809984e-05,185.0,exact,min,0.9999261556638606,1.0,239.5478843430787,inf,185.0
-26,baseline,26,22.108322381973267,13531.0,13532.0,7.390436774813391e-05,1.0,exact,min,0.9999261010937038,1.0,236.84788244579363,inf,1.0
-27,baseline,27,30.187870264053345,13521.0,13522.0,7.395902669920864e-05,639.0,exact,min,0.9999260464428339,1.0,272.77176008806794,inf,639.0
-28,baseline,28,28.049314975738525,13571.0,13571.0,0.0,698.0,exact,min,1.0,1.0,249.4648080254623,,698.0
-29,baseline,29,14.55678105354309,13595.0,13595.0,0.0,3192.0,exact,min,1.0,1.0,146.45520750127733,,3192.0
-30,baseline,30,43.23353409767151,13577.0,13577.0,0.0,194.0,exact,min,1.0,1.0,325.58035794440514,,194.0
-31,baseline,31,22.519271850585934,13582.0,13582.0,0.0,202.0,exact,min,1.0,1.0,219.83938330338603,,202.0
-32,baseline,32,42.93885207176209,13524.0,13524.0,0.0,45.0,exact,min,1.0,1.0,393.511916883344,,45.0
-33,baseline,33,55.74046897888184,13548.0,13548.0,0.0,1122.0,exact,min,1.0,1.0,475.23721361360634,,1122.0
-34,baseline,34,39.575217008590705,13557.0,13557.0,0.0,918.0,exact,min,1.0,1.0,428.0256598032517,,918.0
-35,baseline,35,59.18739986419678,13568.0,13568.0,0.0,242.0,exact,min,1.0,1.0000000001958396,560.4658651946673,,242.0
-36,baseline,36,37.39885544776917,13554.0,13554.0,0.0,427.0,exact,min,1.0,1.0,265.44696718426366,,427.0
-37,baseline,37,25.6471529006958,13532.0,13532.0,0.0,1173.0,exact,min,1.0,1.0,255.63556256861898,,1173.0
-38,baseline,38,18.585349082946774,13514.0,13514.0,0.0,222.0,exact,min,1.0,1.0000000001384364,192.36916865733517,,222.0
-39,baseline,39,19.149864196777344,13538.0,13538.0,0.0,137.0,exact,min,1.0,1.0,164.56019881538484,,137.0
-40,baseline,40,23.872825860977173,13578.0,13578.0,0.0,1.0,exact,min,1.0,1.0,275.8429541923327,,1.0
-41,baseline,41,22.637821435928345,13526.0,13526.0,0.0,1.0,exact,min,1.0,1.0,260.17806939184857,,1.0
-42,baseline,42,27.23757696151733,13529.0,13529.0,0.0,294.0,exact,min,1.0,1.0,304.2965916597413,,294.0
-43,baseline,43,62.30587673187256,13565.0,13565.0,0.0,1889.0,exact,min,1.0,1.0,669.4584178706834,,1889.0
-44,baseline,44,26.792277336120605,13553.0,13553.0,0.0,277.0,exact,min,1.0,1.0000000004058,314.5669569501479,,277.0
-45,baseline,45,16.130266189575195,13521.0,13521.0,0.0,49.0,exact,min,1.0,1.0,198.53404309014186,,49.0
-46,baseline,46,27.59492301940918,13542.0,13543.0,7.384433613941809e-05,18.0,exact,min,0.9999261623173799,1.0000000012010246,311.574450902219,inf,18.0
-47,baseline,47,37.25418496131897,13564.0,13564.0,0.0,91.0,exact,min,1.0,1.0,378.26171905259895,,91.0
-48,baseline,48,25.38289999961853,13552.0,13552.0,0.0,1399.0,exact,min,1.0,1.0,372.8278382249428,,1399.0
-49,baseline,49,41.49198460578919,13524.0,13524.0,0.0,54.0,exact,min,1.0,1.0,449.75848255935665,,54.0
-50,ml-exact,0,6.174116849899292,13540.0,13540.0,0.0,94.0,exact,min,1.0,1.0,58.97411354785817,,94.0
-51,ml-exact,1,5.009122133255005,13566.99998090622,13566.99998090622,0.0,1.0,exact,min,0.9999999985926306,1.0,47.37972505491234,,1.0
-52,ml-exact,2,5.2100441455841064,13562.0,13562.0,0.0,242.0,exact,min,1.0,1.0,46.293765358867894,,242.0
-53,ml-exact,3,12.318267345428467,13522.0,13522.0,0.0,97.0,exact,min,1.0,1.0,118.69374880827397,,97.0
-54,ml-exact,4,4.930402040481567,13534.0,13534.0,0.0,1.0,exact,min,1.0,1.0,41.604677597827184,,1.0
-55,ml-exact,5,5.846351146697998,13531.9999625,13531.99996322176,5.3337307523789275e-11,86.0,exact,min,0.9999999972287911,1.0,58.07036730054231,inf,86.0
-56,ml-exact,6,6.1072611808776855,13534.999997444444,13534.99999744688,1.7995026315535833e-13,574.0,exact,min,0.999999999811189,1.0000000000645954,52.06392211461266,inf,574.0
-57,ml-exact,7,4.921344041824341,13612.0,13613.0,7.346459006758743e-05,52.0,exact,min,0.9999265408065819,1.0,48.9558862244063,inf,52.0
-58,ml-exact,8,6.504706144332886,13580.0,13580.0,0.0,598.0,exact,min,1.0,1.0,63.70045785984959,,598.0
-59,ml-exact,9,10.975998878479004,13584.0,13584.0,0.0,1029.0,exact,min,1.0,1.0,79.99005438465414,,1029.0
-60,ml-exact,10,6.432771921157837,13578.0,13578.0,0.0,289.0,exact,min,1.0,1.0,56.19122008313826,,289.0
-61,ml-exact,11,4.114284992218018,13575.0,13575.0,0.0,1.0,exact,min,1.0,1.0,36.51687813714121,,1.0
-62,ml-exact,12,5.743335008621216,13544.0,13544.0,0.0,91.0,exact,min,1.0,1.0,45.69766003661232,,91.0
-63,ml-exact,13,3.8841359615325928,13533.999942445726,13533.999942477614,2.3561920621524556e-12,1.0,exact,min,0.9999999957474306,1.0,39.90077493178935,inf,1.0
-64,ml-exact,14,5.4998838901519775,13551.0,13551.0,0.0,357.0,exact,min,1.0,1.0,43.77356073845944,,357.0
-65,ml-exact,15,6.1554951667785645,13594.0,13594.0,0.0,202.0,exact,min,1.0,1.00000000008018,49.04433705278275,,202.0
-66,ml-exact,16,37.64959454536438,13594.0,13594.0,0.0,2119.0,exact,min,1.0,1.0,300.27180867954735,,2119.0
-67,ml-exact,17,4.937198877334595,13543.0,13543.0,0.0,259.0,exact,min,1.0,1.0,44.28737662670958,,259.0
-68,ml-exact,18,3.7732529640197754,13524.99999799973,13524.99999799973,0.0,1.0,exact,min,1.0,1.0,44.15845645168041,,1.0
-69,ml-exact,19,5.213793992996216,13564.0,13564.0,0.0,71.0,exact,min,1.0,1.0,58.85044538335262,,71.0
-70,ml-exact,20,20.23319673538208,13569.0,13569.0,0.0,385.0,exact,min,1.0,1.0,177.94328572896333,,385.0
-71,ml-exact,21,4.877216815948486,13566.0,13566.0,0.0,296.0,exact,min,1.0,1.0,49.7112564306318,,296.0
-72,ml-exact,22,4.727038860321045,13565.0,13565.0,0.0,1.0,exact,min,1.0,1.0,41.89410805145629,,1.0
-73,ml-exact,23,10.90548586845398,13580.0,13580.0,0.0,1.0,exact,min,1.0,1.0,81.65484831498785,,1.0
-74,ml-exact,24,4.283064842224121,13542.999993494168,13542.999993497466,2.43507922189534e-13,1.0,exact,min,0.9999999995196166,1.0,44.105817767564275,inf,1.0
-75,ml-exact,25,4.85118293762207,13542.0,13542.0,0.0,48.0,exact,min,1.0,1.0,38.5182375078561,,48.0
-76,ml-exact,26,4.232825994491577,13531.0,13532.0,7.390436774813391e-05,1.0,exact,min,0.9999261010937038,1.0,45.34653766286177,inf,1.0
-77,ml-exact,27,4.408952951431274,13522.0,13522.0,0.0,122.0,exact,min,1.0,1.0,39.83844657433319,,122.0
-78,ml-exact,28,5.116509914398193,13571.0,13571.0,0.0,244.0,exact,min,1.0,1.0,45.505181308696585,,244.0
-79,ml-exact,29,4.226000070571899,13594.0,13595.0,7.356186552890981e-05,1.0,exact,min,0.9999264435454212,1.0,42.51762219679579,inf,1.0
-80,ml-exact,30,6.21782112121582,13576.0,13577.0,7.365939893930465e-05,927.0,exact,min,0.9999263460263681,1.0,46.82477314267862,inf,927.0
-81,ml-exact,31,4.492018938064575,13582.0,13582.0,0.0,81.0,exact,min,1.0,1.0,43.852335887385834,,81.0
-82,ml-exact,32,4.796422004699707,13524.0,13524.0,0.0,158.0,exact,min,1.0,1.0,43.95667620774794,,158.0
-83,ml-exact,33,13.309514999389648,13548.0,13548.0,0.0,1186.0,exact,min,1.0,1.0,113.47548628008188,,1186.0
-84,ml-exact,34,4.092274188995361,13557.0,13557.0,0.0,1.0,exact,min,1.0,1.0,44.25998117610655,,1.0
-85,ml-exact,35,12.810777187347412,13567.999997342848,13567.999997342848,0.0,665.0,exact,min,0.9999999998041603,1.0,121.309659430842,,665.0
-86,ml-exact,36,6.248754978179932,13554.0,13554.0,0.0,207.0,exact,min,1.0,1.0,44.35197381780768,,207.0
-87,ml-exact,37,4.716349124908447,13532.0,13532.0,0.0,135.0,exact,min,1.0,1.0,47.009762311015635,,135.0
-88,ml-exact,38,4.521557807922363,13513.999998129171,13513.999998129171,0.0,1.0,exact,min,0.9999999998615636,1.0,46.800752176573944,,1.0
-89,ml-exact,39,5.645528078079224,13538.0,13538.0,0.0,300.0,exact,min,1.0,1.0,48.51361938654882,,300.0
-90,ml-exact,40,4.649635076522827,13578.0,13578.0,0.0,1.0,exact,min,1.0,1.0,53.725063086094615,,1.0
-91,ml-exact,41,4.388063907623291,13526.0,13526.0,0.0,1.0,exact,min,1.0,1.0,50.43232623266163,,1.0
-92,ml-exact,42,5.448373079299927,13529.0,13529.0,0.0,62.0,exact,min,1.0,1.0,60.868900360118474,,62.0
-93,ml-exact,43,6.0346598625183105,13565.0,13565.0,0.0,1351.0,exact,min,1.0,1.0,64.8406547802029,,1351.0
-94,ml-exact,44,4.181343078613281,13552.999994500191,13552.999994500191,0.0,1.0,exact,min,0.9999999995941998,1.0,49.09296629408488,,1.0
-95,ml-exact,45,4.882394075393677,13521.0,13521.0,0.0,1.0,exact,min,1.0,1.0,60.09333165088886,,1.0
-96,ml-exact,46,4.094098091125488,13542.999983734524,13542.999983734524,0.0,1.0,exact,min,1.0,1.0,46.226487523992326,,1.0
-97,ml-exact,47,4.172211170196533,13564.0,13564.0,0.0,1.0,exact,min,1.0,1.0,42.36269753660237,,1.0
-98,ml-exact,48,4.766964912414551,13552.0,13552.0,0.0,1.0,exact,min,1.0,1.0,70.01789485111554,,1.0
-99,ml-exact,49,4.057707786560059,13524.0,13524.0,0.0,1.0,exact,min,1.0,1.0,43.98412161027133,,1.0
-100,ml-heuristic,0,0.10469198226928711,13540.0,13540.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0
-101,ml-heuristic,1,0.10572290420532227,13566.0,13567.0,7.371369600471768e-05,1.0,heuristic,min,0.9999262917373037,1.0000000014073693,1.0,inf,1.0
-102,ml-heuristic,2,0.11254310607910156,13562.0,13563.0,7.37354372511429e-05,1.0,heuristic,min,1.0,1.000073735437251,1.0,inf,1.0
-103,ml-heuristic,3,0.10378193855285645,13522.0,13522.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0
-104,ml-heuristic,4,0.11850595474243164,13533.0,13534.0,7.389344565137072e-05,1.0,heuristic,min,0.9999261120141865,1.0,1.0,inf,1.0
-105,ml-heuristic,5,0.1006770133972168,13532.0,13532.0,0.0,1.0,heuristic,min,1.0,1.0000000027178717,1.0,,1.0
-106,ml-heuristic,6,0.11730313301086426,13534.99999657258,13534.99999657258,0.0,1.0,heuristic,min,0.9999999997467736,1.0,1.0,,1.0
-107,ml-heuristic,7,0.10052609443664551,13613.0,13613.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0
-108,ml-heuristic,8,0.10211396217346191,13579.0,13580.0,7.364312541424258e-05,1.0,heuristic,min,0.9999263622974963,1.0,1.0,inf,1.0
-109,ml-heuristic,9,0.13721704483032227,13584.0,13584.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0
-110,ml-heuristic,10,0.11448001861572266,13577.0,13578.0,7.365397363187744e-05,1.0,heuristic,min,0.9999263514508764,1.0,1.0,inf,1.0
-111,ml-heuristic,11,0.11266803741455078,13575.0,13575.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0
-112,ml-heuristic,12,0.12568116188049316,13543.0,13544.0,7.383888355608063e-05,1.0,heuristic,min,0.9999261665682221,1.0,1.0,inf,1.0
-113,ml-heuristic,13,0.09734487533569336,13534.0,13534.0,0.0,1.0,heuristic,min,1.0,1.0000000042502133,1.0,,1.0
-114,ml-heuristic,14,0.12564396858215332,13550.0,13551.0,7.380073800738008e-05,1.0,heuristic,min,0.9999262047081396,1.0,1.0,inf,1.0
-115,ml-heuristic,15,0.12550878524780273,13593.0,13594.0,7.356727727506805e-05,1.0,heuristic,min,0.9999264381344711,1.00000000008018,1.0,inf,1.0
-116,ml-heuristic,16,0.12538504600524902,13593.0,13594.0,7.356727727506805e-05,1.0,heuristic,min,0.9999264381344711,1.0,1.0,inf,1.0
-117,ml-heuristic,17,0.1114809513092041,13543.0,13543.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0
-118,ml-heuristic,18,0.08544802665710449,13524.0,13525.0,7.394262052647145e-05,1.0,heuristic,min,0.9999260629944637,1.0000000001478944,1.0,inf,1.0
-119,ml-heuristic,19,0.08859395980834961,13564.0,13564.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0
-120,ml-heuristic,20,0.11370587348937988,13569.0,13569.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0
-121,ml-heuristic,21,0.09811091423034668,13565.0,13566.0,7.371913011426465e-05,1.0,heuristic,min,0.9999262863039953,1.0,1.0,inf,1.0
-122,ml-heuristic,22,0.11283302307128906,13564.0,13565.0,7.372456502506635e-05,1.0,heuristic,min,0.9999262808698858,1.0,1.0,inf,1.0
-123,ml-heuristic,23,0.13355588912963867,13579.0,13580.0,7.364312541424258e-05,1.0,heuristic,min,0.9999263622974963,1.0,1.0,inf,1.0
-124,ml-heuristic,24,0.09710884094238281,13543.0,13543.0,0.0,1.0,heuristic,min,1.0,1.00000000048014,1.0,,1.0
-125,ml-heuristic,25,0.1259450912475586,13542.0,13542.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0
-126,ml-heuristic,26,0.09334397315979004,13532.0,13532.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0
-127,ml-heuristic,27,0.11067080497741699,13521.0,13522.0,7.395902669920864e-05,1.0,heuristic,min,0.9999260464428339,1.0,1.0,inf,1.0
-128,ml-heuristic,28,0.11243796348571777,13571.0,13571.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0
-129,ml-heuristic,29,0.09939408302307129,13595.0,13595.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0
-130,ml-heuristic,30,0.13278913497924805,13576.0,13577.0,7.365939893930465e-05,1.0,heuristic,min,0.9999263460263681,1.0,1.0,inf,1.0
-131,ml-heuristic,31,0.10243511199951172,13581.0,13582.0,7.363228039172373e-05,1.0,heuristic,min,0.9999263731409218,1.0,1.0,inf,1.0
-132,ml-heuristic,32,0.10911703109741211,13524.0,13524.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0
-133,ml-heuristic,33,0.11728978157043457,13548.0,13548.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0
-134,ml-heuristic,34,0.09245991706848145,13557.0,13557.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0
-135,ml-heuristic,35,0.10560393333435059,13568.0,13568.0,0.0,1.0,heuristic,min,1.0,1.0000000001958396,1.0,,1.0
-136,ml-heuristic,36,0.14089012145996094,13553.0,13554.0,7.378440197742197e-05,1.0,heuristic,min,0.9999262210417589,1.0,1.0,inf,1.0
-137,ml-heuristic,37,0.1003270149230957,13531.0,13532.0,7.390436774813391e-05,1.0,heuristic,min,0.9999261010937038,1.0,1.0,inf,1.0
-138,ml-heuristic,38,0.09661293029785156,13514.0,13514.0,0.0,1.0,heuristic,min,1.0,1.0000000001384364,1.0,,1.0
-139,ml-heuristic,39,0.11636996269226074,13537.0,13538.0,7.387161113983896e-05,1.0,heuristic,min,0.999926133845472,1.0,1.0,inf,1.0
-140,ml-heuristic,40,0.08654499053955078,13577.0,13578.0,7.365397363187744e-05,1.0,heuristic,min,0.9999263514508764,1.0,1.0,inf,1.0
-141,ml-heuristic,41,0.08700895309448242,13526.0,13526.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0
-142,ml-heuristic,42,0.08950996398925781,13528.0,13529.0,7.392075694855116e-05,1.0,heuristic,min,0.9999260847069259,1.0,1.0,inf,1.0
-143,ml-heuristic,43,0.09306907653808594,13564.0,13565.0,7.372456502506635e-05,1.0,heuristic,min,0.9999262808698858,1.0,1.0,inf,1.0
-144,ml-heuristic,44,0.08517193794250488,13553.0,13553.0,0.0,1.0,heuristic,min,1.0,1.0000000004058,1.0,,1.0
-145,ml-heuristic,45,0.08124685287475586,13520.0,13521.0,7.396449704142012e-05,1.0,heuristic,min,0.9999260409733008,1.0,1.0,inf,1.0
-146,ml-heuristic,46,0.08856606483459473,13542.0,13543.0,7.38443361394181e-05,1.0,heuristic,min,0.9999261623173799,1.0000000012010246,1.0,inf,1.0
-147,ml-heuristic,47,0.09848785400390625,13563.0,13564.0,7.37300007373e-05,1.0,heuristic,min,0.9999262754349749,1.0,1.0,inf,1.0
-148,ml-heuristic,48,0.06808209419250488,13552.0,13552.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0
-149,ml-heuristic,49,0.0922539234161377,13523.0,13524.0,7.394808844191378e-05,1.0,heuristic,min,0.9999260573794735,1.0,1.0,inf,1.0
+,Solver,Instance,Wallclock Time,Lower Bound,Upper Bound,Gap,Nodes,Mode,Sense,Relative Lower Bound,Relative Upper Bound,Relative Wallclock Time,Relative Gap,Relative Nodes,Predicted LB,Predicted UB
+0,baseline,0,36.53329420089722,13540.0,13540.0,0.0,850.0,exact,min,1.0,1.0,348.9264354938609,,850.0,,
+1,baseline,1,18.817906141281128,13567.0,13567.0,0.0,210.0,exact,min,1.0,1.0000000012586066,211.43717937384307,,210.0,,
+2,baseline,2,41.11200523376465,13562.0,13562.0,0.0,454.0,exact,min,1.0,1.0,381.2422435502022,,454.0,,
+3,baseline,3,32.869613885879524,13522.0,13522.0,0.0,977.0,exact,min,1.0,1.0,292.9972180543808,,977.0,,
+4,baseline,4,26.034526586532593,13534.0,13534.0,0.0,396.0,exact,min,1.0,1.0,263.0973634057194,,396.0,,
+5,baseline,5,49.523164987564094,13532.0,13532.0,0.0,591.0,exact,min,1.0,1.0000000027128713,490.46927412556704,,591.0,,
+6,baseline,6,43.27228236198425,13535.0,13535.0,0.0,2292.0,exact,min,1.0,1.0000000002532266,458.15479820673085,,2292.0,,
+7,baseline,7,38.228996753692634,13613.0,13613.0,0.0,104.0,exact,min,1.0,1.0,378.2617805740546,,104.0,,
+8,baseline,8,57.10530495643616,13580.0,13580.0,0.0,2520.0,exact,min,1.0,1.0,593.5852954952678,,2520.0,,
+9,baseline,9,32.913992881774895,13583.000000000002,13584.0,7.362143856277559e-05,1150.0,exact,min,0.9999263839811544,1.0000000000526519,265.6794478999876,inf,1150.0,,
+10,baseline,10,54.779502391815186,13578.0,13578.0,0.0,5650.0,exact,min,1.0,1.0,429.670280884168,,5650.0,,
+11,baseline,11,15.760047912597654,13575.0,13575.0,0.0,137.0,exact,min,1.0,1.0,156.60298221756824,,137.0,,
+12,baseline,12,32.832256078720086,13544.0,13544.0,0.0,995.0,exact,min,1.0,1.0,268.6150555630328,,995.0,,
+13,baseline,13,18.5905544757843,13534.0,13534.0,0.0,1.0,exact,min,1.0,1.000000000382988,174.85802031709014,,1.0,,
+14,baseline,14,26.83425283432007,13551.0,13551.0,0.0,180.0,exact,min,1.0,1.0,229.4603988150939,,180.0,,
+15,baseline,15,43.79837608337402,13593.999998910032,13593.999998910032,0.0,866.0,exact,min,0.9999999999198199,1.0,354.0232066494123,,866.0,,
+16,baseline,16,88.94579243659973,13594.0,13594.0,0.0,3845.0,exact,min,1.0,1.0,643.5173900218896,,3845.0,,
+17,baseline,17,46.35858511924744,13543.0,13543.0,0.0,609.0,exact,min,1.0,1.0,351.289044461708,,609.0,,
+18,baseline,18,26.682329416275024,13524.0,13525.0,7.394262052647145e-05,1.0,exact,min,0.9999260628465804,1.0,221.69489708999424,inf,1.0,,
+19,baseline,19,22.814379453659054,13564.0,13564.0,0.0,212.0,exact,min,1.0,1.0,188.49094286400899,,212.0,,
+20,baseline,20,53.29448294639587,13569.0,13569.0,0.0,553.0,exact,min,1.0,1.0,535.5578148659267,,553.0,,
+21,baseline,21,47.91645574569702,13566.0,13566.0,0.0,427.0,exact,min,1.0,1.0,469.00946064520946,,427.0,,
+22,baseline,22,23.47979474067688,13565.0,13565.0,0.0,1.0,exact,min,1.0,1.0000000005158192,208.7615810370521,,1.0,,
+23,baseline,23,34.002822875976555,13579.0,13580.0,7.364312541424258e-05,795.0,exact,min,0.9999263622974963,1.0,288.66394771516985,inf,795.0,,
+24,baseline,24,26.307467222213745,13543.0,13543.0,0.0,72.0,exact,min,1.0,1.0,263.615440667033,,72.0,,
+25,baseline,25,30.169880151748657,13541.0,13542.0,7.384978952809984e-05,185.0,exact,min,0.9999261556638606,1.0,253.1283548471628,inf,185.0,,
+26,baseline,26,22.108322381973267,13531.0,13532.0,7.390436774813391e-05,1.0,exact,min,0.9999261010937038,1.0,201.04333111467156,inf,1.0,,
+27,baseline,27,30.187870264053345,13521.0,13522.0,7.395902669920864e-05,639.0,exact,min,0.9999260464428339,1.0,299.340417081376,inf,639.0,,
+28,baseline,28,28.049314975738525,13571.0,13571.0,0.0,698.0,exact,min,1.0,1.0,229.69026552128074,,698.0,,
+29,baseline,29,14.55678105354309,13595.0,13595.0,0.0,3192.0,exact,min,1.0,1.0,155.07081048543787,,3192.0,,
+30,baseline,30,43.23353409767151,13577.0,13577.0,0.0,194.0,exact,min,1.0,1.0,330.94661332622775,,194.0,,
+31,baseline,31,22.519271850585934,13582.0,13582.0,0.0,202.0,exact,min,1.0,1.0,241.9939842689144,,202.0,,
+32,baseline,32,42.93885207176209,13524.0,13524.0,0.0,45.0,exact,min,1.0,1.0,412.99724360606047,,45.0,,
+33,baseline,33,55.74046897888184,13548.0,13548.0,0.0,1122.0,exact,min,1.0,1.0,476.4924946958442,,1122.0,,
+34,baseline,34,39.575217008590705,13557.0,13557.0,0.0,918.0,exact,min,1.0,1.0,433.5347670400678,,918.0,,
+35,baseline,35,59.18739986419678,13568.0,13568.0,0.0,242.0,exact,min,1.0,1.0,505.6068872532047,,242.0,,
+36,baseline,36,37.39885544776917,13554.0,13554.0,0.0,427.0,exact,min,1.0,1.0000000009191574,317.32406216115623,,427.0,,
+37,baseline,37,25.6471529006958,13532.0,13532.0,0.0,1173.0,exact,min,1.0,1.0,292.3723011023896,,1173.0,,
+38,baseline,38,18.585349082946774,13514.0,13514.0,0.0,222.0,exact,min,1.0,1.0000000000879068,170.0863254726038,,222.0,,
+39,baseline,39,19.149864196777344,13538.0,13538.0,0.0,137.0,exact,min,1.0,1.0,162.33253366586564,,137.0,,
+40,baseline,40,23.872825860977173,13578.0,13578.0,0.0,1.0,exact,min,1.0,1.0,272.34371158135235,,1.0,,
+41,baseline,41,22.637821435928345,13526.0,13526.0,0.0,1.0,exact,min,1.0,1.0,216.56354703847057,,1.0,,
+42,baseline,42,27.23757696151733,13529.0,13529.0,0.0,294.0,exact,min,1.0,1.0,313.8552354683267,,294.0,,
+43,baseline,43,62.30587673187256,13565.0,13565.0,0.0,1889.0,exact,min,1.0,1.0,676.1793314013662,,1889.0,,
+44,baseline,44,26.792277336120605,13553.0,13553.0,0.0,277.0,exact,min,1.0,1.0000000004058,315.6449158326709,,277.0,,
+45,baseline,45,16.130266189575195,13521.0,13521.0,0.0,49.0,exact,min,1.0,1.0,179.2210778392354,,49.0,,
+46,baseline,46,27.59492301940918,13542.0,13543.0,7.384433613941809e-05,18.0,exact,min,0.999926162069197,1.0000000009528236,295.25891836734695,inf,18.0,,
+47,baseline,47,37.25418496131897,13564.0,13564.0,0.0,91.0,exact,min,1.0,1.0,391.7824472459582,,91.0,,
+48,baseline,48,25.38289999961853,13552.0,13552.0,0.0,1399.0,exact,min,1.0,1.0,264.4132092856912,,1399.0,,
+49,baseline,49,41.49198460578919,13524.0,13524.0,0.0,54.0,exact,min,1.0,1.0,401.4551324342904,,54.0,,
+50,ml-exact,0,6.05466103553772,13540.0,13540.0,0.0,76.0,exact,min,1.0,1.0,57.82756084453674,,76.0,13533.663005450075,13534.833771880201
+51,ml-exact,1,4.927448987960815,13566.0,13566.999982924486,7.371243730548252e-05,1.0,exact,min,0.9999262917373037,1.0,55.36460367593285,inf,1.0,13564.944720585474,13566.140858467346
+52,ml-exact,2,5.054768085479736,13562.0,13562.0,0.0,581.0,exact,min,1.0,1.0,46.87417007700624,,581.0,13544.231152455277,13545.410490321805
+53,ml-exact,3,12.246867179870605,13522.0,13522.0,0.0,159.0,exact,min,1.0,1.0,109.16763506994181,,159.0,13512.526711439668,13513.680334996996
+54,ml-exact,4,4.51540207862854,13534.0,13534.0,0.0,27.0,exact,min,1.0,1.0,45.63134181277603,,27.0,13551.417492418816,13552.602658862095
+55,ml-exact,5,5.639435052871704,13531.9999625,13531.999963289425,5.833764649881255e-11,116.0,exact,min,0.9999999972287911,1.0,55.85203646727414,inf,116.0,13556.490202981313,13557.679483714064
+56,ml-exact,6,5.965026140213013,13534.999997444444,13534.99999744688,1.7995026315535833e-13,1125.0,exact,min,0.999999999811189,1.0000000000645954,63.156025020951766,inf,1125.0,13535.353908970907,13536.526046830859
+57,ml-exact,7,4.488301992416382,13613.0,13613.0,0.0,1.0,exact,min,1.0,1.0,44.410087827939336,,1.0,13594.535532200041,13595.755670103834
+58,ml-exact,8,6.566015958786011,13580.0,13580.0,0.0,732.0,exact,min,1.0,1.0,68.25093616251435,,732.0,13587.771918116712,13588.98657030121
+59,ml-exact,9,5.067723989486694,13583.999999272728,13583.999999284777,8.869983664408748e-13,314.0,exact,min,0.9999999999464612,1.0,40.906313508437,inf,314.0,13568.749253507347,13569.948477106323
+60,ml-exact,10,6.226325035095215,13578.0,13578.0,0.0,1824.0,exact,min,1.0,1.0,48.837004899577366,,1824.0,13567.058349986515,13568.256202155668
+61,ml-exact,11,3.802604913711548,13575.0,13575.0,0.0,1.0,exact,min,1.0,1.0,37.78537178217587,,1.0,13563.67654294485,13564.871652254355
+62,ml-exact,12,5.549864053726196,13544.0,13544.0,0.0,36.0,exact,min,1.0,1.0,45.405866644819874,,36.0,13537.890264252155,13539.064459256842
+63,ml-exact,13,4.056273937225342,13533.999994792684,13533.99999481664,1.7700672716060462e-12,1.0,exact,min,0.999999999615242,1.0,38.15227950575203,inf,1.0,13558.603832382352,13559.794827402384
+64,ml-exact,14,5.761282920837402,13551.0,13551.0,0.0,224.0,exact,min,1.0,1.0,49.26488115261272,,224.0,13547.612959496942,13548.795040223118
+65,ml-exact,15,5.643709897994995,13594.0,13594.0,0.0,589.0,exact,min,1.0,1.00000000008018,45.6182272987437,,589.0,13559.44928414277,13560.640964877713
+66,ml-exact,16,27.778817176818848,13594.0,13594.0,0.0,690.0,exact,min,1.0,1.0,200.97805008892087,,690.0,13551.840218299023,13553.02572759976
+67,ml-exact,17,5.432694911956787,13543.0,13543.0,0.0,264.0,exact,min,1.0,1.0,41.16705027912775,,264.0,13534.50845721049,13535.67990935553
+68,ml-exact,18,4.090307950973511,13525.0,13525.0,0.0,1.0,exact,min,1.0,1.0,33.98505378261128,,1.0,13524.785761965704,13525.949328389255
+69,ml-exact,19,4.649221181869507,13564.0,13564.0,0.0,134.0,exact,min,1.0,1.0,38.41156784184877,,134.0,13559.026558262562,13560.21789614005
+70,ml-exact,20,20.46094799041748,13569.0,13569.0,0.0,467.0,exact,min,1.0,1.0,205.61266363828034,,467.0,13548.881137137567,13550.06424643611
+71,ml-exact,21,5.368138074874878,13566.0,13566.0,0.0,575.0,exact,min,1.0,1.0,52.54369305877081,,575.0,13552.68567005944,13553.871865075087
+72,ml-exact,22,4.845078945159912,13564.999993000001,13564.999993002913,2.146850008536462e-13,1.0,exact,min,0.9999999994839662,1.0,43.0781594137461,inf,1.0,13550.149314778191,13551.333452649102
+73,ml-exact,23,10.622714042663574,13580.0,13580.0,0.0,50.0,exact,min,1.0,1.0,90.18058830553998,,50.0,13559.872010022977,13561.064033615377
+74,ml-exact,24,4.7801079750061035,13542.0,13543.0,7.38443361394181e-05,1.0,exact,min,0.999926161116444,1.0,47.89933822299735,inf,1.0,13544.653878335484,13545.833559059469
+75,ml-exact,25,5.581364154815674,13542.0,13542.0,0.0,68.0,exact,min,1.0,1.0,46.82821142163305,,68.0,13527.322117246953,13528.48774081524
+76,ml-exact,26,4.19781494140625,13532.0,13532.0,0.0,1.0,exact,min,1.0,1.0,38.17307729832039,,1.0,13537.467538371948,13538.641390519178
+77,ml-exact,27,4.832879066467285,13522.0,13522.0,0.0,392.0,exact,min,1.0,1.0,47.922427876034014,,392.0,13536.62208661153,13537.79525304385
+78,ml-exact,28,5.056591033935547,13571.0,13571.0,0.0,311.0,exact,min,1.0,1.0,41.40741897696213,,311.0,13559.026558262562,13560.21789614005
+79,ml-exact,29,4.025763988494873,13595.0,13595.0,0.0,1.0,exact,min,1.0,1.0,42.88575078671262,,1.0,13570.862882908388,13572.063820794645
+80,ml-exact,30,5.8940110206604,13577.0,13577.0,0.0,180.0,exact,min,1.0,1.0,45.11782408970538,,180.0,13558.181106502145,13559.37175866472
+81,ml-exact,31,4.316196918487549,13582.0,13582.0,0.0,35.0,exact,min,1.0,1.0,46.38221413748047,,35.0,13582.276481674007,13583.486676711575
+82,ml-exact,32,4.606575012207031,13524.0,13524.0,0.0,166.0,exact,min,1.0,1.0,44.307257663210855,,166.0,13534.50845721049,13535.67990935553
+83,ml-exact,33,15.963073015213013,13548.0,13548.0,0.0,3089.0,exact,min,1.0,1.0,136.45892514669225,,3089.0,13551.840218299023,13553.02572759976
+84,ml-exact,34,4.222745895385742,13557.0,13557.0,0.0,19.0,exact,min,1.0,1.0,46.25892910778135,,19.0,13542.540248934445,13543.718215371147
+85,ml-exact,35,14.356100082397461,13568.0,13568.0,0.0,872.0,exact,min,1.0,1.0,122.63662692415794,,872.0,13543.38570069486,13544.564352846477
+86,ml-exact,36,5.769742012023926,13553.999987541665,13553.999987541742,5.63653202148058e-15,257.0,exact,min,0.999999999080837,1.0,48.95545467786571,inf,257.0,13524.363036085495,13525.526259651591
+87,ml-exact,37,5.165120840072632,13531.0,13532.0,7.390436774813391e-05,57.0,exact,min,0.9999261010937038,1.0,58.881321889065255,inf,57.0,13538.312990132363,13539.487527994506
+88,ml-exact,38,4.379245042800903,13513.999998802607,13513.999998812027,6.970953175816699e-13,1.0,exact,min,0.9999999999113961,1.0,40.07725086840406,inf,1.0,13528.590294887577,13529.756947028232
+89,ml-exact,39,5.780348062515259,13538.0,13538.0,0.0,275.0,exact,min,1.0,1.0,48.99974938812302,,275.0,13536.199360731323,13537.372184306187
+90,ml-exact,40,4.431488037109375,13578.0,13578.0,0.0,1.0,exact,min,1.0,1.0,50.55488222814557,,1.0,13565.79017234589,13566.986995942674
+91,ml-exact,41,4.366369009017944,13525.0,13526.0,7.393715341959335e-05,1.0,exact,min,0.9999260683128789,1.0,41.77064312253244,inf,1.0,13520.558503163622,13521.718641012614
+92,ml-exact,42,4.972646951675415,13529.0,13529.0,0.0,1.0,exact,min,1.0,1.0,57.29919669888296,,1.0,13529.013020767785,13530.180015765896
+93,ml-exact,43,6.401448011398315,13565.0,13565.0,0.0,2367.0,exact,min,1.0,1.0,69.4722081349617,,2367.0,13559.872010022977,13561.064033615377
+94,ml-exact,44,4.0258378982543945,13552.999994500191,13552.999994500191,0.0,1.0,exact,min,0.9999999995941998,1.0,47.42916209057432,,1.0,13570.017431147971,13571.217683319315
+95,ml-exact,45,3.9583420753479004,13521.0,13521.0,0.0,1.0,exact,min,1.0,1.0,43.98057197957064,,1.0,13518.022147882373,13519.180228586629
+96,ml-exact,46,4.806010007858276,13542.999987095911,13542.999987095911,0.0,1.0,exact,min,1.0,1.0,51.423130102040815,,1.0,13542.117523054236,13543.295146633483
+97,ml-exact,47,4.445219039916992,13564.0,13564.0,0.0,1.0,exact,min,1.0,1.0,46.748004172182775,,1.0,13566.212898226098,13567.410064680338
+98,ml-exact,48,4.616817951202393,13552.0,13552.0,0.0,1.0,exact,min,1.0,1.0,48.09330892780417,,1.0,13557.335654741728,13558.525621189392
+99,ml-exact,49,4.049206018447876,13524.0,13524.0,0.0,1.0,exact,min,1.0,1.0,39.17803773027788,,1.0,13500.690386793842,13501.8344103424
+100,ml-heuristic,0,0.10470199584960938,13540.0,13540.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13533.663005450075,13534.833771880201
+101,ml-heuristic,1,0.08899998664855957,13566.0,13567.0,7.371369600471768e-05,1.0,heuristic,min,0.9999262917373037,1.0000000012586066,1.0,inf,1.0,13564.944720585474,13566.140858467346
+102,ml-heuristic,2,0.10783696174621582,13562.0,13563.0,7.37354372511429e-05,1.0,heuristic,min,1.0,1.000073735437251,1.0,inf,1.0,13544.231152455277,13545.410490321805
+103,ml-heuristic,3,0.11218404769897461,13522.0,13522.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13512.526711439668,13513.680334996996
+104,ml-heuristic,4,0.0989539623260498,13533.0,13534.0,7.389344565137072e-05,1.0,heuristic,min,0.9999261120141865,1.0,1.0,inf,1.0,13551.417492418816,13552.602658862095
+105,ml-heuristic,5,0.10097098350524902,13532.0,13532.0,0.0,1.0,heuristic,min,1.0,1.0000000027128713,1.0,,1.0,13556.490202981313,13557.679483714064
+106,ml-heuristic,6,0.09444904327392578,13534.99999657258,13534.99999657258,0.0,1.0,heuristic,min,0.9999999997467736,1.0,1.0,,1.0,13535.353908970907,13536.526046830859
+107,ml-heuristic,7,0.10106492042541504,13613.0,13613.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13594.535532200041,13595.755670103834
+108,ml-heuristic,8,0.09620404243469238,13579.0,13580.0,7.364312541424258e-05,1.0,heuristic,min,0.9999263622974963,1.0,1.0,inf,1.0,13587.771918116712,13588.98657030121
+109,ml-heuristic,9,0.1238861083984375,13584.0,13584.0,0.0,1.0,heuristic,min,1.0,1.0000000000526519,1.0,,1.0,13568.749253507347,13569.948477106323
+110,ml-heuristic,10,0.12749195098876953,13577.0,13578.0,7.365397363187744e-05,1.0,heuristic,min,0.9999263514508764,1.0,1.0,inf,1.0,13567.058349986515,13568.256202155668
+111,ml-heuristic,11,0.10063695907592773,13575.0,13575.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13563.67654294485,13564.871652254355
+112,ml-heuristic,12,0.12222790718078613,13543.0,13544.0,7.383888355608063e-05,1.0,heuristic,min,0.9999261665682221,1.0,1.0,inf,1.0,13537.890264252155,13539.064459256842
+113,ml-heuristic,13,0.10631799697875977,13534.0,13534.0,0.0,1.0,heuristic,min,1.0,1.000000000382988,1.0,,1.0,13558.603832382352,13559.794827402384
+114,ml-heuristic,14,0.11694502830505371,13550.0,13551.0,7.380073800738008e-05,1.0,heuristic,min,0.9999262047081396,1.0,1.0,inf,1.0,13547.612959496942,13548.795040223118
+115,ml-heuristic,15,0.12371611595153809,13593.0,13594.0,7.356727727506805e-05,1.0,heuristic,min,0.9999264381344711,1.00000000008018,1.0,inf,1.0,13559.44928414277,13560.640964877713
+116,ml-heuristic,16,0.13821816444396973,13594.0,13594.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13551.840218299023,13553.02572759976
+117,ml-heuristic,17,0.13196706771850586,13543.0,13543.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13534.50845721049,13535.67990935553
+118,ml-heuristic,18,0.12035608291625977,13525.0,13525.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13524.785761965704,13525.949328389255
+119,ml-heuristic,19,0.12103700637817383,13564.0,13564.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13559.026558262562,13560.21789614005
+120,ml-heuristic,20,0.09951210021972656,13569.0,13569.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13548.881137137567,13550.06424643611
+121,ml-heuristic,21,0.10216522216796875,13565.0,13566.0,7.371913011426465e-05,1.0,heuristic,min,0.9999262863039953,1.0,1.0,inf,1.0,13552.68567005944,13553.871865075087
+122,ml-heuristic,22,0.1124718189239502,13564.0,13565.0,7.372456502506635e-05,1.0,heuristic,min,0.9999262808698858,1.0000000005158192,1.0,inf,1.0,13550.149314778191,13551.333452649102
+123,ml-heuristic,23,0.11779379844665527,13579.0,13580.0,7.364312541424258e-05,1.0,heuristic,min,0.9999263622974963,1.0,1.0,inf,1.0,13559.872010022977,13561.064033615377
+124,ml-heuristic,24,0.09979486465454102,13543.0,13543.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13544.653878335484,13545.833559059469
+125,ml-heuristic,25,0.11918807029724121,13542.0,13542.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13527.322117246953,13528.48774081524
+126,ml-heuristic,26,0.10996794700622559,13532.0,13532.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13537.467538371948,13538.641390519178
+127,ml-heuristic,27,0.10084795951843262,13521.0,13522.0,7.395902669920864e-05,1.0,heuristic,min,0.9999260464428339,1.0,1.0,inf,1.0,13536.62208661153,13537.79525304385
+128,ml-heuristic,28,0.12211799621582031,13571.0,13571.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13559.026558262562,13560.21789614005
+129,ml-heuristic,29,0.0938718318939209,13595.0,13595.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13570.862882908388,13572.063820794645
+130,ml-heuristic,30,0.13063597679138184,13577.0,13577.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13558.181106502145,13559.37175866472
+131,ml-heuristic,31,0.09305715560913086,13581.0,13582.0,7.363228039172373e-05,1.0,heuristic,min,0.9999263731409218,1.0,1.0,inf,1.0,13582.276481674007,13583.486676711575
+132,ml-heuristic,32,0.10396885871887207,13524.0,13524.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13534.50845721049,13535.67990935553
+133,ml-heuristic,33,0.11698079109191895,13548.0,13548.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13551.840218299023,13553.02572759976
+134,ml-heuristic,34,0.09128499031066895,13557.0,13557.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13542.540248934445,13543.718215371147
+135,ml-heuristic,35,0.11706209182739258,13568.0,13568.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13543.38570069486,13544.564352846477
+136,ml-heuristic,36,0.11785697937011719,13553.0,13554.0,7.378440197742197e-05,1.0,heuristic,min,0.9999262210417589,1.0000000009191574,1.0,inf,1.0,13524.363036085495,13525.526259651591
+137,ml-heuristic,37,0.08772087097167969,13531.0,13532.0,7.390436774813391e-05,1.0,heuristic,min,0.9999261010937038,1.0,1.0,inf,1.0,13538.312990132363,13539.487527994506
+138,ml-heuristic,38,0.10927009582519531,13513.0,13514.0,7.400281210686006e-05,1.0,heuristic,min,0.9999260026639041,1.0000000000879068,1.0,inf,1.0,13528.590294887577,13529.756947028232
+139,ml-heuristic,39,0.11796689033508301,13537.0,13538.0,7.387161113983896e-05,1.0,heuristic,min,0.999926133845472,1.0,1.0,inf,1.0,13536.199360731323,13537.372184306187
+140,ml-heuristic,40,0.08765697479248047,13577.0,13578.0,7.365397363187744e-05,1.0,heuristic,min,0.9999263514508764,1.0,1.0,inf,1.0,13565.79017234589,13566.986995942674
+141,ml-heuristic,41,0.10453200340270996,13526.0,13526.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13520.558503163622,13521.718641012614
+142,ml-heuristic,42,0.08678388595581055,13528.0,13529.0,7.392075694855116e-05,1.0,heuristic,min,0.9999260847069259,1.0,1.0,inf,1.0,13529.013020767785,13530.180015765896
+143,ml-heuristic,43,0.09214401245117188,13564.0,13565.0,7.372456502506635e-05,1.0,heuristic,min,0.9999262808698858,1.0,1.0,inf,1.0,13559.872010022977,13561.064033615377
+144,ml-heuristic,44,0.08488106727600098,13553.0,13553.0,0.0,1.0,heuristic,min,1.0,1.0000000004058,1.0,,1.0,13570.017431147971,13571.217683319315
+145,ml-heuristic,45,0.09000205993652344,13521.0,13521.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13518.022147882373,13519.180228586629
+146,ml-heuristic,46,0.0934600830078125,13542.0,13543.0,7.38443361394181e-05,1.0,heuristic,min,0.999926162069197,1.0000000009528236,1.0,inf,1.0,13542.117523054236,13543.295146633483
+147,ml-heuristic,47,0.09508895874023438,13563.0,13564.0,7.37300007373e-05,1.0,heuristic,min,0.9999262754349749,1.0,1.0,inf,1.0,13566.212898226098,13567.410064680338
+148,ml-heuristic,48,0.09599709510803223,13552.0,13552.0,0.0,1.0,heuristic,min,1.0,1.0,1.0,,1.0,13557.335654741728,13558.525621189392
+149,ml-heuristic,49,0.10335397720336914,13523.0,13524.0,7.394808844191378e-05,1.0,heuristic,min,0.9999260573794735,1.0,1.0,inf,1.0,13500.690386793842,13501.8344103424
diff --git a/benchmark/tsp/ChallengeA/performance.png b/benchmark/tsp/ChallengeA/performance.png
index dfc3502..f676459 100644
Binary files a/benchmark/tsp/ChallengeA/performance.png and b/benchmark/tsp/ChallengeA/performance.png differ
diff --git a/docs/404.html b/docs/404.html
index 7dbe612..7ac582c 100644
--- a/docs/404.html
+++ b/docs/404.html
@@ -14,16 +14,14 @@
     <title>MIPLearn</title>
     
 
-    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.12.0/css/all.css">
-    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.12.0/css/v4-shims.css">
+    <link rel="stylesheet" href="//use.fontawesome.com/releases/v5.5.0/css/all.css" integrity="sha384-B4dIYHKNBt8Bc12p+WXckhzcICo0wtJAoU8YZTY5qE0Id1GSseTk6S+L3BlXeVIU" crossorigin="anonymous">
     <link rel="stylesheet" href="//cdn.jsdelivr.net/npm/hack-font@3.3.0/build/web/hack.min.css">
-    <link href='//rsms.me/inter/inter.css' rel='stylesheet' type='text/css'>
+    <link href='//fonts.googleapis.com/css?family=PT+Sans:400,400italic,700,700italic&subset=latin-ext,latin' rel='stylesheet' type='text/css'>
     <link href='//fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,700italic,400,300,600,700&subset=latin-ext,latin' rel='stylesheet' type='text/css'>
     <link href="/css/bootstrap-custom.min.css" rel="stylesheet">
     <link href="/css/base.min.css" rel="stylesheet">
     <link href="/css/cinder.min.css" rel="stylesheet">
-
-    
+    <link href="/css/highlight.min.css" rel="stylesheet">
     <link href="/css/custom.css" rel="stylesheet">
 
     <!-- HTML5 shim and Respond.js IE8 support of HTML5 elements and media queries -->
@@ -32,6 +30,15 @@
             <script src="https://cdn.jsdelivr.net/npm/respond.js@1.4.2/dest/respond.min.js"></script>
         <![endif]-->
 
+    <script src="//ajax.googleapis.com/ajax/libs/webfont/1.6.26/webfont.js"></script>
+    <script>
+    WebFont.load({
+        google: {
+            families: ['Open Sans', 'PT Sans']
+        }
+    });
+    </script>
+
     
 
      
@@ -133,17 +140,17 @@
         
         <hr>
         <p>
-        <small>Copyright © 2020, UChicago Argonne, LLC. All Rights Reserved.</small><br>
+        <small>Copyright © 2020, UChicago Argonne, LLC. All Rights Reserved.<br></small>
         
-        <small>Documentation built with <a href="http://www.mkdocs.org/">MkDocs</a>.</small>
-        </p>
+        <small>Documentation built with <a href="http://www.mkdocs.org/">MkDocs</a>.</p></small>
 
         
         
     </footer>
     <script src="//ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
     <script src="/js/bootstrap-3.0.3.min.js"></script>
-    
+    <script src="/js/highlight.pack.js"></script>
+    <script>hljs.initHighlightingOnLoad();</script>
     <script>var base_url = "/"</script>
     
     <script src="/js/base.js"></script>
@@ -155,11 +162,8 @@
     <div class="modal-dialog modal-lg">
         <div class="modal-content">
             <div class="modal-header">
-                <button type="button" class="close" data-dismiss="modal">
-                    <span aria-hidden="true">&times;</span>
-                    <span class="sr-only">Close</span>
-                </button>
                 <h4 class="modal-title" id="searchModalLabel">Search</h4>
+                <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
             </div>
             <div class="modal-body">
                 <p>
diff --git a/docs/about/index.html b/docs/about/index.html
index 05ea301..a9442a1 100644
--- a/docs/about/index.html
+++ b/docs/about/index.html
@@ -14,16 +14,14 @@
     <title>About - MIPLearn</title>
     
 
-    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.12.0/css/all.css">
-    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.12.0/css/v4-shims.css">
+    <link rel="stylesheet" href="//use.fontawesome.com/releases/v5.5.0/css/all.css" integrity="sha384-B4dIYHKNBt8Bc12p+WXckhzcICo0wtJAoU8YZTY5qE0Id1GSseTk6S+L3BlXeVIU" crossorigin="anonymous">
     <link rel="stylesheet" href="//cdn.jsdelivr.net/npm/hack-font@3.3.0/build/web/hack.min.css">
-    <link href='//rsms.me/inter/inter.css' rel='stylesheet' type='text/css'>
+    <link href='//fonts.googleapis.com/css?family=PT+Sans:400,400italic,700,700italic&subset=latin-ext,latin' rel='stylesheet' type='text/css'>
     <link href='//fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,700italic,400,300,600,700&subset=latin-ext,latin' rel='stylesheet' type='text/css'>
     <link href="../css/bootstrap-custom.min.css" rel="stylesheet">
     <link href="../css/base.min.css" rel="stylesheet">
     <link href="../css/cinder.min.css" rel="stylesheet">
-
-    
+    <link href="../css/highlight.min.css" rel="stylesheet">
     <link href="../css/custom.css" rel="stylesheet">
 
     <!-- HTML5 shim and Respond.js IE8 support of HTML5 elements and media queries -->
@@ -32,6 +30,15 @@
             <script src="https://cdn.jsdelivr.net/npm/respond.js@1.4.2/dest/respond.min.js"></script>
         <![endif]-->
 
+    <script src="//ajax.googleapis.com/ajax/libs/webfont/1.6.26/webfont.js"></script>
+    <script>
+    WebFont.load({
+        google: {
+            families: ['Open Sans', 'PT Sans']
+        }
+    });
+    </script>
+
     
 
      
@@ -191,17 +198,17 @@ POSSIBILITY OF SUCH DAMAGE.
         
         <hr>
         <p>
-        <small>Copyright © 2020, UChicago Argonne, LLC. All Rights Reserved.</small><br>
+        <small>Copyright © 2020, UChicago Argonne, LLC. All Rights Reserved.<br></small>
         
-        <small>Documentation built with <a href="http://www.mkdocs.org/">MkDocs</a>.</small>
-        </p>
+        <small>Documentation built with <a href="http://www.mkdocs.org/">MkDocs</a>.</p></small>
 
         
         
     </footer>
     <script src="//ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
     <script src="../js/bootstrap-3.0.3.min.js"></script>
-    
+    <script src="../js/highlight.pack.js"></script>
+    <script>hljs.initHighlightingOnLoad();</script>
     <script>var base_url = ".."</script>
     
     <script src="../js/base.js"></script>
@@ -213,11 +220,8 @@ POSSIBILITY OF SUCH DAMAGE.
     <div class="modal-dialog modal-lg">
         <div class="modal-content">
             <div class="modal-header">
-                <button type="button" class="close" data-dismiss="modal">
-                    <span aria-hidden="true">&times;</span>
-                    <span class="sr-only">Close</span>
-                </button>
                 <h4 class="modal-title" id="searchModalLabel">Search</h4>
+                <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
             </div>
             <div class="modal-body">
                 <p>
diff --git a/docs/benchmark/index.html b/docs/benchmark/index.html
index d16e537..a07fbf1 100644
--- a/docs/benchmark/index.html
+++ b/docs/benchmark/index.html
@@ -14,16 +14,14 @@
     <title>Benchmark - MIPLearn</title>
     
 
-    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.12.0/css/all.css">
-    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.12.0/css/v4-shims.css">
+    <link rel="stylesheet" href="//use.fontawesome.com/releases/v5.5.0/css/all.css" integrity="sha384-B4dIYHKNBt8Bc12p+WXckhzcICo0wtJAoU8YZTY5qE0Id1GSseTk6S+L3BlXeVIU" crossorigin="anonymous">
     <link rel="stylesheet" href="//cdn.jsdelivr.net/npm/hack-font@3.3.0/build/web/hack.min.css">
-    <link href='//rsms.me/inter/inter.css' rel='stylesheet' type='text/css'>
+    <link href='//fonts.googleapis.com/css?family=PT+Sans:400,400italic,700,700italic&subset=latin-ext,latin' rel='stylesheet' type='text/css'>
     <link href='//fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,700italic,400,300,600,700&subset=latin-ext,latin' rel='stylesheet' type='text/css'>
     <link href="../css/bootstrap-custom.min.css" rel="stylesheet">
     <link href="../css/base.min.css" rel="stylesheet">
     <link href="../css/cinder.min.css" rel="stylesheet">
-
-    
+    <link href="../css/highlight.min.css" rel="stylesheet">
     <link href="../css/custom.css" rel="stylesheet">
 
     <!-- HTML5 shim and Respond.js IE8 support of HTML5 elements and media queries -->
@@ -32,6 +30,15 @@
             <script src="https://cdn.jsdelivr.net/npm/respond.js@1.4.2/dest/respond.min.js"></script>
         <![endif]-->
 
+    <script src="//ajax.googleapis.com/ajax/libs/webfont/1.6.26/webfont.js"></script>
+    <script>
+    WebFont.load({
+        google: {
+            families: ['Open Sans', 'PT Sans']
+        }
+    });
+    </script>
+
     
 
      
@@ -200,17 +207,17 @@ benchmark.parallel_solve(test_instances)
         
         <hr>
         <p>
-        <small>Copyright © 2020, UChicago Argonne, LLC. All Rights Reserved.</small><br>
+        <small>Copyright © 2020, UChicago Argonne, LLC. All Rights Reserved.<br></small>
         
-        <small>Documentation built with <a href="http://www.mkdocs.org/">MkDocs</a>.</small>
-        </p>
+        <small>Documentation built with <a href="http://www.mkdocs.org/">MkDocs</a>.</p></small>
 
         
         
     </footer>
     <script src="//ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
     <script src="../js/bootstrap-3.0.3.min.js"></script>
-    
+    <script src="../js/highlight.pack.js"></script>
+    <script>hljs.initHighlightingOnLoad();</script>
     <script>var base_url = ".."</script>
     
     <script src="../js/base.js"></script>
@@ -222,11 +229,8 @@ benchmark.parallel_solve(test_instances)
     <div class="modal-dialog modal-lg">
         <div class="modal-content">
             <div class="modal-header">
-                <button type="button" class="close" data-dismiss="modal">
-                    <span aria-hidden="true">&times;</span>
-                    <span class="sr-only">Close</span>
-                </button>
                 <h4 class="modal-title" id="searchModalLabel">Search</h4>
+                <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
             </div>
             <div class="modal-body">
                 <p>
diff --git a/docs/css/cinder.css b/docs/css/cinder.css
index 4834560..ce3cb62 100644
--- a/docs/css/cinder.css
+++ b/docs/css/cinder.css
@@ -10,28 +10,23 @@ body {
     color: #343838;
 }
 h1, h2, h3, h4, h5, h6 {
-    font-family:'Inter', 'Helvetica Neue', Helvetica, Arial, sans-serif;
+    font-family:'PT Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
     color: #222;
 }
 h1 small, h2 small, h3 small, h4 small, h5 small, h6 small, .h1 small, .h2 small, .h3 small, .h4 small, .h5 small, .h6 small, h1 .small, h2 .small, h3 .small, h4 .small, h5 .small, h6 .small, .h1 .small, .h2 .small, .h3 .small, .h4 .small, .h5 .small, .h6 .small {
     color: #B1B7B9;
 }
-
-h2 {
-    margin-top: 35px;
-}
-
 h1, h2 {
     font-weight: 700;
 }
 h4 {
-    font-family: 'Inter', 'Helvetica Neue', Helvetica, Arial, sans-serif;
+    font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
     font-weight: 300;
     margin-top: 20px;
     font-style: italic;
 }
 h5 {
-    font-family: 'Inter', 'Helvetica Neue', Helvetica, Arial, sans-serif;
+    font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
     font-weight: 300;
     font-variant: small-caps;
 }
@@ -46,7 +41,7 @@ pre {
     margin-bottom: 25px;
 }
 .lead {
-    font-family:"Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
+    font-family:"Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
     font-weight: 400;
     line-height: 1.4;
     letter-spacing: 0.0312em;
@@ -59,8 +54,7 @@ pre {
 .bs-sidenav {
     background-image: url("../img/grid11.png");
     background-repeat: repeat;
-    font-family: Inter,"Helvetica Neue",Helvetica,Arial,sans-serif;
-    font-size: 13px;
+    font-size: 12px;
 }
 .well {
     background-color: #FCFDFF;
@@ -77,7 +71,7 @@ pre {
     box-shadow: none;
 }
 #mkdocs-search-query {
-    font-family:"Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
+    font-family:"Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
     font-size: 20px;
     font-weight: 700;
     color: #343838;
diff --git a/docs/css/cinder.min.css b/docs/css/cinder.min.css
index fb7cc34..ff25572 100644
--- a/docs/css/cinder.min.css
+++ b/docs/css/cinder.min.css
@@ -1 +1 @@
-body{font-family:"Open Sans","Helvetica Neue",Helvetica,Arial,sans-serif;font-size:16px;line-height:1.7;background-color:#FFF;color:#343838}h1,h2,h3,h4,h5,h6{font-family:'Inter','Helvetica Neue',Helvetica,Arial,sans-serif;color:#222}h1 small,h2 small,h3 small,h4 small,h5 small,h6 small,.h1 small,.h2 small,.h3 small,.h4 small,.h5 small,.h6 small,h1 .small,h2 .small,h3 .small,h4 .small,h5 .small,h6 .small,.h1 .small,.h2 .small,.h3 .small,.h4 .small,.h5 .small,.h6 .small{color:#b1b7b9}h2{margin-top:35px}h1,h2{font-weight:700}h4{font-family:'Inter','Helvetica Neue',Helvetica,Arial,sans-serif;font-weight:300;margin-top:20px;font-style:italic}h5{font-family:'Inter','Helvetica Neue',Helvetica,Arial,sans-serif;font-weight:300;font-variant:small-caps}pre,code{background-color:#fcfdff}pre>code{font-size:13px}pre{margin-top:25px;margin-bottom:25px}.lead{font-family:"Inter","Helvetica Neue",Helvetica,Arial,sans-serif;font-weight:400;line-height:1.4;letter-spacing:.0312em;color:#b1b7b9}.navbar-default{background-color:#343838;border-bottom:8px #ebf2f2 solid}.bs-sidenav{background-image:url("../img/grid11.png");background-repeat:repeat;font-family:Inter,"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:13px}.well{background-color:#fcfdff}.btn-default{background-color:#fcfdff}.table-striped>tbody>tr:nth-child(2n+1)>td,.table-striped>tbody>tr:nth-child(2n+1)>th{background-color:#fcfdff}#mkdocs-search-query:focus{outline:0;-webkit-box-shadow:none;box-shadow:none}#mkdocs-search-query{font-family:"Inter","Helvetica Neue",Helvetica,Arial,sans-serif;font-size:20px;font-weight:700;color:#343838;height:45px}footer>hr{width:35%}
+body{font-family:"Open Sans","Helvetica Neue",Helvetica,Arial,sans-serif;font-size:16px;line-height:1.7;background-color:#FFF;color:#343838}h1,h2,h3,h4,h5,h6{font-family:'PT Sans','Helvetica Neue',Helvetica,Arial,sans-serif;color:#222}h1 small,h2 small,h3 small,h4 small,h5 small,h6 small,.h1 small,.h2 small,.h3 small,.h4 small,.h5 small,.h6 small,h1 .small,h2 .small,h3 .small,h4 .small,h5 .small,h6 .small,.h1 .small,.h2 .small,.h3 .small,.h4 .small,.h5 .small,.h6 .small{color:#b1b7b9}h1,h2{font-weight:700}h4{font-family:'Open Sans','Helvetica Neue',Helvetica,Arial,sans-serif;font-weight:300;margin-top:20px;font-style:italic}h5{font-family:'Open Sans','Helvetica Neue',Helvetica,Arial,sans-serif;font-weight:300;font-variant:small-caps}pre,code{background-color:#fcfdff}pre>code{font-size:13px}pre{margin-top:25px;margin-bottom:25px}.lead{font-family:"Open Sans","Helvetica Neue",Helvetica,Arial,sans-serif;font-weight:400;line-height:1.4;letter-spacing:.0312em;color:#b1b7b9}.navbar-default{background-color:#343838;border-bottom:8px #ebf2f2 solid}.bs-sidenav{background-image:url("../img/grid11.png");background-repeat:repeat;font-size:12px}.well{background-color:#fcfdff}.btn-default{background-color:#fcfdff}.table-striped>tbody>tr:nth-child(2n+1)>td,.table-striped>tbody>tr:nth-child(2n+1)>th{background-color:#fcfdff}#mkdocs-search-query:focus{outline:0;-webkit-box-shadow:none;box-shadow:none}#mkdocs-search-query{font-family:"Open Sans","Helvetica Neue",Helvetica,Arial,sans-serif;font-size:20px;font-weight:700;color:#343838;height:45px}footer>hr{width:35%}
diff --git a/docs/customization/index.html b/docs/customization/index.html
index e3d6ef7..7b11dfd 100644
--- a/docs/customization/index.html
+++ b/docs/customization/index.html
@@ -14,16 +14,14 @@
     <title>Customization - MIPLearn</title>
     
 
-    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.12.0/css/all.css">
-    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.12.0/css/v4-shims.css">
+    <link rel="stylesheet" href="//use.fontawesome.com/releases/v5.5.0/css/all.css" integrity="sha384-B4dIYHKNBt8Bc12p+WXckhzcICo0wtJAoU8YZTY5qE0Id1GSseTk6S+L3BlXeVIU" crossorigin="anonymous">
     <link rel="stylesheet" href="//cdn.jsdelivr.net/npm/hack-font@3.3.0/build/web/hack.min.css">
-    <link href='//rsms.me/inter/inter.css' rel='stylesheet' type='text/css'>
+    <link href='//fonts.googleapis.com/css?family=PT+Sans:400,400italic,700,700italic&subset=latin-ext,latin' rel='stylesheet' type='text/css'>
     <link href='//fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,700italic,400,300,600,700&subset=latin-ext,latin' rel='stylesheet' type='text/css'>
     <link href="../css/bootstrap-custom.min.css" rel="stylesheet">
     <link href="../css/base.min.css" rel="stylesheet">
     <link href="../css/cinder.min.css" rel="stylesheet">
-
-    
+    <link href="../css/highlight.min.css" rel="stylesheet">
     <link href="../css/custom.css" rel="stylesheet">
 
     <!-- HTML5 shim and Respond.js IE8 support of HTML5 elements and media queries -->
@@ -32,6 +30,15 @@
             <script src="https://cdn.jsdelivr.net/npm/respond.js@1.4.2/dest/respond.min.js"></script>
         <![endif]-->
 
+    <script src="//ajax.googleapis.com/ajax/libs/webfont/1.6.26/webfont.js"></script>
+    <script>
+    WebFont.load({
+        google: {
+            families: ['Open Sans', 'PT Sans']
+        }
+    });
+    </script>
+
     
 
      
@@ -153,17 +160,17 @@ solver = LearningSolver(solver=&quot;cplex&quot;,
         
         <hr>
         <p>
-        <small>Copyright © 2020, UChicago Argonne, LLC. All Rights Reserved.</small><br>
+        <small>Copyright © 2020, UChicago Argonne, LLC. All Rights Reserved.<br></small>
         
-        <small>Documentation built with <a href="http://www.mkdocs.org/">MkDocs</a>.</small>
-        </p>
+        <small>Documentation built with <a href="http://www.mkdocs.org/">MkDocs</a>.</p></small>
 
         
         
     </footer>
     <script src="//ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
     <script src="../js/bootstrap-3.0.3.min.js"></script>
-    
+    <script src="../js/highlight.pack.js"></script>
+    <script>hljs.initHighlightingOnLoad();</script>
     <script>var base_url = ".."</script>
     
     <script src="../js/base.js"></script>
@@ -175,11 +182,8 @@ solver = LearningSolver(solver=&quot;cplex&quot;,
     <div class="modal-dialog modal-lg">
         <div class="modal-content">
             <div class="modal-header">
-                <button type="button" class="close" data-dismiss="modal">
-                    <span aria-hidden="true">&times;</span>
-                    <span class="sr-only">Close</span>
-                </button>
                 <h4 class="modal-title" id="searchModalLabel">Search</h4>
+                <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
             </div>
             <div class="modal-body">
                 <p>
diff --git a/docs/figures/benchmark_knapsack_a.png b/docs/figures/benchmark_knapsack_a.png
index c250cba..ba12ed6 100644
Binary files a/docs/figures/benchmark_knapsack_a.png and b/docs/figures/benchmark_knapsack_a.png differ
diff --git a/docs/figures/benchmark_tsp_a.png b/docs/figures/benchmark_tsp_a.png
index dfc3502..f676459 100644
Binary files a/docs/figures/benchmark_tsp_a.png and b/docs/figures/benchmark_tsp_a.png differ
diff --git a/docs/index.html b/docs/index.html
index 82209cb..979c4e8 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -14,16 +14,14 @@
     <title>Home - MIPLearn</title>
     
 
-    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.12.0/css/all.css">
-    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.12.0/css/v4-shims.css">
+    <link rel="stylesheet" href="//use.fontawesome.com/releases/v5.5.0/css/all.css" integrity="sha384-B4dIYHKNBt8Bc12p+WXckhzcICo0wtJAoU8YZTY5qE0Id1GSseTk6S+L3BlXeVIU" crossorigin="anonymous">
     <link rel="stylesheet" href="//cdn.jsdelivr.net/npm/hack-font@3.3.0/build/web/hack.min.css">
-    <link href='//rsms.me/inter/inter.css' rel='stylesheet' type='text/css'>
+    <link href='//fonts.googleapis.com/css?family=PT+Sans:400,400italic,700,700italic&subset=latin-ext,latin' rel='stylesheet' type='text/css'>
     <link href='//fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,700italic,400,300,600,700&subset=latin-ext,latin' rel='stylesheet' type='text/css'>
     <link href="css/bootstrap-custom.min.css" rel="stylesheet">
     <link href="css/base.min.css" rel="stylesheet">
     <link href="css/cinder.min.css" rel="stylesheet">
-
-    
+    <link href="css/highlight.min.css" rel="stylesheet">
     <link href="css/custom.css" rel="stylesheet">
 
     <!-- HTML5 shim and Respond.js IE8 support of HTML5 elements and media queries -->
@@ -32,6 +30,15 @@
             <script src="https://cdn.jsdelivr.net/npm/respond.js@1.4.2/dest/respond.min.js"></script>
         <![endif]-->
 
+    <script src="//ajax.googleapis.com/ajax/libs/webfont/1.6.26/webfont.js"></script>
+    <script>
+    WebFont.load({
+        google: {
+            families: ['Open Sans', 'PT Sans']
+        }
+    });
+    </script>
+
     
 
      
@@ -179,17 +186,17 @@
         
         <hr>
         <p>
-        <small>Copyright © 2020, UChicago Argonne, LLC. All Rights Reserved.</small><br>
+        <small>Copyright © 2020, UChicago Argonne, LLC. All Rights Reserved.<br></small>
         
-        <small>Documentation built with <a href="http://www.mkdocs.org/">MkDocs</a>.</small>
-        </p>
+        <small>Documentation built with <a href="http://www.mkdocs.org/">MkDocs</a>.</p></small>
 
         
         
     </footer>
     <script src="//ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
     <script src="js/bootstrap-3.0.3.min.js"></script>
-    
+    <script src="js/highlight.pack.js"></script>
+    <script>hljs.initHighlightingOnLoad();</script>
     <script>var base_url = "."</script>
     
     <script src="js/base.js"></script>
@@ -201,11 +208,8 @@
     <div class="modal-dialog modal-lg">
         <div class="modal-content">
             <div class="modal-header">
-                <button type="button" class="close" data-dismiss="modal">
-                    <span aria-hidden="true">&times;</span>
-                    <span class="sr-only">Close</span>
-                </button>
                 <h4 class="modal-title" id="searchModalLabel">Search</h4>
+                <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
             </div>
             <div class="modal-body">
                 <p>
@@ -268,6 +272,6 @@
 </html>
 
 <!--
-MkDocs version : 1.1
-Build Date UTC : 2020-02-26 19:28:44
+MkDocs version : 1.0.4
+Build Date UTC : 2020-02-26 21:46:02
 -->
diff --git a/docs/js/base.js b/docs/js/base.js
index 1db589c..d933b3a 100644
--- a/docs/js/base.js
+++ b/docs/js/base.js
@@ -1,78 +1,88 @@
-function getSearchTerm() {
+function getSearchTerm()
+{
     var sPageURL = window.location.search.substring(1);
     var sURLVariables = sPageURL.split('&');
-    for (var i = 0; i < sURLVariables.length; i++) {
+    for (var i = 0; i < sURLVariables.length; i++)
+    {
         var sParameterName = sURLVariables[i].split('=');
-        if (sParameterName[0] == 'q') {
+        if (sParameterName[0] == 'q')
+        {
             return sParameterName[1];
         }
     }
 }
 
 $(document).ready(function() {
+    /**
+     * ------------------------------------------------------------------------
+     * Cinder theme specific
+     * ------------------------------------------------------------------------
+     */
+    hljs.initHighlightingOnLoad();
+
+
     /**
      * ------------------------------------------------------------------------
      * Taken from themes/mkdocs/js/base.js
      * ------------------------------------------------------------------------
      */
     var search_term = getSearchTerm(),
-        $search_modal = $('#mkdocs_search_modal'),
-        $keyboard_modal = $('#mkdocs_keyboard_modal');
+    $search_modal = $('#mkdocs_search_modal'),
+    $keyboard_modal = $('#mkdocs_keyboard_modal');
 
-    if (search_term) {
+    if(search_term){
         $search_modal.modal();
     }
 
     // make sure search input gets autofocus everytime modal opens.
-    $search_modal.on('shown.bs.modal', function() {
+    $search_modal.on('shown.bs.modal', function () {
         $search_modal.find('#mkdocs-search-query').focus();
     });
 
     // Close search modal when result is selected
     // The links get added later so listen to parent
     $('#mkdocs-search-results').click(function(e) {
-        if ($(e.target).is('a')) {
-            $search_modal.modal('hide');
-        }
+      if ($(e.target).is('a')) {
+        $search_modal.modal('hide');
+      }
     });
 
     if (typeof shortcuts !== 'undefined') {
-        // Populate keyboard modal with proper Keys
-        $keyboard_modal.find('.help.shortcut kbd')[0].innerHTML = keyCodes[shortcuts.help];
-        $keyboard_modal.find('.prev.shortcut kbd')[0].innerHTML = keyCodes[shortcuts.previous];
-        $keyboard_modal.find('.next.shortcut kbd')[0].innerHTML = keyCodes[shortcuts.next];
-        $keyboard_modal.find('.search.shortcut kbd')[0].innerHTML = keyCodes[shortcuts.search];
+      // Populate keyboard modal with proper Keys
+      $keyboard_modal.find('.help.shortcut kbd')[0].innerHTML = keyCodes[shortcuts.help];
+      $keyboard_modal.find('.prev.shortcut kbd')[0].innerHTML = keyCodes[shortcuts.previous];
+      $keyboard_modal.find('.next.shortcut kbd')[0].innerHTML = keyCodes[shortcuts.next];
+      $keyboard_modal.find('.search.shortcut kbd')[0].innerHTML = keyCodes[shortcuts.search];
 
-        // Keyboard navigation
-        document.addEventListener("keydown", function(e) {
-            if ($(e.target).is(':input')) return true;
-            var key = e.which || e.key || window.event && window.event.key;
-            var page;
-            switch (key) {
-                case shortcuts.next:
-                    page = $('.navbar a[rel="next"]:first').prop('href');
-                    break;
-                case shortcuts.previous:
-                    page = $('.navbar a[rel="prev"]:first').prop('href');
-                    break;
-                case shortcuts.search:
-                    e.preventDefault();
-                    $keyboard_modal.modal('hide');
-                    $search_modal.modal('show');
-                    $search_modal.find('#mkdocs-search-query').focus();
-                    break;
-                case shortcuts.help:
-                    $search_modal.modal('hide');
-                    $keyboard_modal.modal('show');
-                    break;
-                default:
-                    break;
-            }
-            if (page) {
-                $keyboard_modal.modal('hide');
-                window.location.href = page;
-            }
-        });
+      // Keyboard navigation
+      document.addEventListener("keydown", function(e) {
+          if ($(e.target).is(':input')) return true;
+          var key = e.which || e.key || window.event && window.event.key;
+          var page;
+          switch (key) {
+              case shortcuts.next:
+                  page = $('.navbar a[rel="next"]:first').prop('href');
+                  break;
+              case shortcuts.previous:
+                  page = $('.navbar a[rel="prev"]:first').prop('href');
+                  break;
+              case shortcuts.search:
+                  e.preventDefault();
+                  $keyboard_modal.modal('hide');
+                  $search_modal.modal('show');
+                  $search_modal.find('#mkdocs-search-query').focus();
+                  break;
+              case shortcuts.help:
+                  $search_modal.modal('hide');
+                  $keyboard_modal.modal('show');
+                  break;
+              default: break;
+          }
+          if (page) {
+              $keyboard_modal.modal('hide');
+              window.location.href = page;
+          }
+      });
     }
 
     $('table').addClass('table table-striped table-hover');
@@ -111,115 +121,115 @@ $("li.disabled a").click(function() {
 // See https://www.cambiaresearch.com/articles/15/javascript-char-codes-key-codes
 // We only list common keys below. Obscure keys are omited and their use is discouraged.
 var keyCodes = {
-    8: 'backspace',
-    9: 'tab',
-    13: 'enter',
-    16: 'shift',
-    17: 'ctrl',
-    18: 'alt',
-    19: 'pause/break',
-    20: 'caps lock',
-    27: 'escape',
-    32: 'spacebar',
-    33: 'page up',
-    34: 'page down',
-    35: 'end',
-    36: 'home',
-    37: '&larr;',
-    38: '&uarr;',
-    39: '&rarr;',
-    40: '&darr;',
-    45: 'insert',
-    46: 'delete',
-    48: '0',
-    49: '1',
-    50: '2',
-    51: '3',
-    52: '4',
-    53: '5',
-    54: '6',
-    55: '7',
-    56: '8',
-    57: '9',
-    65: 'a',
-    66: 'b',
-    67: 'c',
-    68: 'd',
-    69: 'e',
-    70: 'f',
-    71: 'g',
-    72: 'h',
-    73: 'i',
-    74: 'j',
-    75: 'k',
-    76: 'l',
-    77: 'm',
-    78: 'n',
-    79: 'o',
-    80: 'p',
-    81: 'q',
-    82: 'r',
-    83: 's',
-    84: 't',
-    85: 'u',
-    86: 'v',
-    87: 'w',
-    88: 'x',
-    89: 'y',
-    90: 'z',
-    91: 'Left Windows Key / Left ⌘',
-    92: 'Right Windows Key',
-    93: 'Windows Menu / Right ⌘',
-    96: 'numpad 0',
-    97: 'numpad 1',
-    98: 'numpad 2',
-    99: 'numpad 3',
-    100: 'numpad 4',
-    101: 'numpad 5',
-    102: 'numpad 6',
-    103: 'numpad 7',
-    104: 'numpad 8',
-    105: 'numpad 9',
-    106: 'multiply',
-    107: 'add',
-    109: 'subtract',
-    110: 'decimal point',
-    111: 'divide',
-    112: 'f1',
-    113: 'f2',
-    114: 'f3',
-    115: 'f4',
-    116: 'f5',
-    117: 'f6',
-    118: 'f7',
-    119: 'f8',
-    120: 'f9',
-    121: 'f10',
-    122: 'f11',
-    123: 'f12',
-    124: 'f13',
-    125: 'f14',
-    126: 'f15',
-    127: 'f16',
-    128: 'f17',
-    129: 'f18',
-    130: 'f19',
-    131: 'f20',
-    132: 'f21',
-    133: 'f22',
-    134: 'f23',
-    135: 'f24',
-    144: 'num lock',
-    145: 'scroll lock',
-    186: '&semi;',
-    187: '&equals;',
-    188: '&comma;',
-    189: '&hyphen;',
-    190: '&period;',
-    191: '&quest;',
-    192: '&grave;',
-    219: '&lsqb;',
-    220: '&bsol;',
-    221: '&rsqb;',
-    222: '&apos;',
-};
+  8: 'backspace',
+  9: 'tab',
+  13: 'enter',
+  16: 'shift',
+  17: 'ctrl',
+  18: 'alt',
+  19: 'pause/break',
+  20: 'caps lock',
+  27: 'escape',
+  32: 'spacebar',
+  33: 'page up',
+  34: 'page down',
+  35: 'end',
+  36: 'home',
+  37: '&larr;',
+  38: '&uarr;',
+  39: '&rarr;',
+  40: '&darr;',
+  45: 'insert',
+  46: 'delete',
+  48: '0',
+  49: '1',
+  50: '2',
+  51: '3',
+  52: '4',
+  53: '5',
+  54: '6',
+  55: '7',
+  56: '8',
+  57: '9',
+  65: 'a',
+  66: 'b',
+  67: 'c',
+  68: 'd',
+  69: 'e',
+  70: 'f',
+  71: 'g',
+  72: 'h',
+  73: 'i',
+  74: 'j',
+  75: 'k',
+  76: 'l',
+  77: 'm',
+  78: 'n',
+  79: 'o',
+  80: 'p',
+  81: 'q',
+  82: 'r',
+  83: 's',
+  84: 't',
+  85: 'u',
+  86: 'v',
+  87: 'w',
+  88: 'x',
+  89: 'y',
+  90: 'z',
+  91: 'Left Windows Key / Left ⌘',
+  92: 'Right Windows Key',
+  93: 'Windows Menu / Right ⌘',
+  96: 'numpad 0',
+  97: 'numpad 1',
+  98: 'numpad 2',
+  99: 'numpad 3',
+  100: 'numpad 4',
+  101: 'numpad 5',
+  102: 'numpad 6',
+  103: 'numpad 7',
+  104: 'numpad 8',
+  105: 'numpad 9',
+  106: 'multiply',
+  107: 'add',
+  109: 'subtract',
+  110: 'decimal point',
+  111: 'divide',
+  112: 'f1',
+  113: 'f2',
+  114: 'f3',
+  115: 'f4',
+  116: 'f5',
+  117: 'f6',
+  118: 'f7',
+  119: 'f8',
+  120: 'f9',
+  121: 'f10',
+  122: 'f11',
+  123: 'f12',
+  124: 'f13',
+  125: 'f14',
+  126: 'f15',
+  127: 'f16',
+  128: 'f17',
+  129: 'f18',
+  130: 'f19',
+  131: 'f20',
+  132: 'f21',
+  133: 'f22',
+  134: 'f23',
+  135: 'f24',
+  144: 'num lock',
+  145: 'scroll lock',
+  186: '&semi;',
+  187: '&equals;',
+  188: '&comma;',
+  189: '&hyphen;',
+  190: '&period;',
+  191: '&quest;',
+  192: '&grave;',
+  219: '&lsqb;',
+  220: '&bsol;',
+  221: '&rsqb;',
+  222: '&apos;',
+};
\ No newline at end of file
diff --git a/docs/problems/index.html b/docs/problems/index.html
index c2e5154..241a51b 100644
--- a/docs/problems/index.html
+++ b/docs/problems/index.html
@@ -14,16 +14,14 @@
     <title>Problems - MIPLearn</title>
     
 
-    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.12.0/css/all.css">
-    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.12.0/css/v4-shims.css">
+    <link rel="stylesheet" href="//use.fontawesome.com/releases/v5.5.0/css/all.css" integrity="sha384-B4dIYHKNBt8Bc12p+WXckhzcICo0wtJAoU8YZTY5qE0Id1GSseTk6S+L3BlXeVIU" crossorigin="anonymous">
     <link rel="stylesheet" href="//cdn.jsdelivr.net/npm/hack-font@3.3.0/build/web/hack.min.css">
-    <link href='//rsms.me/inter/inter.css' rel='stylesheet' type='text/css'>
+    <link href='//fonts.googleapis.com/css?family=PT+Sans:400,400italic,700,700italic&subset=latin-ext,latin' rel='stylesheet' type='text/css'>
     <link href='//fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,700italic,400,300,600,700&subset=latin-ext,latin' rel='stylesheet' type='text/css'>
     <link href="../css/bootstrap-custom.min.css" rel="stylesheet">
     <link href="../css/base.min.css" rel="stylesheet">
     <link href="../css/cinder.min.css" rel="stylesheet">
-
-    
+    <link href="../css/highlight.min.css" rel="stylesheet">
     <link href="../css/custom.css" rel="stylesheet">
 
     <!-- HTML5 shim and Respond.js IE8 support of HTML5 elements and media queries -->
@@ -32,6 +30,15 @@
             <script src="https://cdn.jsdelivr.net/npm/respond.js@1.4.2/dest/respond.min.js"></script>
         <![endif]-->
 
+    <script src="//ajax.googleapis.com/ajax/libs/webfont/1.6.26/webfont.js"></script>
+    <script>
+    WebFont.load({
+        google: {
+            families: ['Open Sans', 'PT Sans']
+        }
+    });
+    </script>
+
     
 
      
@@ -291,17 +298,17 @@ from the provided probability distributions <code>K</code> and <code>u</code>.</
         
         <hr>
         <p>
-        <small>Copyright © 2020, UChicago Argonne, LLC. All Rights Reserved.</small><br>
+        <small>Copyright © 2020, UChicago Argonne, LLC. All Rights Reserved.<br></small>
         
-        <small>Documentation built with <a href="http://www.mkdocs.org/">MkDocs</a>.</small>
-        </p>
+        <small>Documentation built with <a href="http://www.mkdocs.org/">MkDocs</a>.</p></small>
 
         
         
     </footer>
     <script src="//ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
     <script src="../js/bootstrap-3.0.3.min.js"></script>
-    
+    <script src="../js/highlight.pack.js"></script>
+    <script>hljs.initHighlightingOnLoad();</script>
     <script>var base_url = ".."</script>
     
     <script src="../js/base.js"></script>
@@ -313,11 +320,8 @@ from the provided probability distributions <code>K</code> and <code>u</code>.</
     <div class="modal-dialog modal-lg">
         <div class="modal-content">
             <div class="modal-header">
-                <button type="button" class="close" data-dismiss="modal">
-                    <span aria-hidden="true">&times;</span>
-                    <span class="sr-only">Close</span>
-                </button>
                 <h4 class="modal-title" id="searchModalLabel">Search</h4>
+                <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
             </div>
             <div class="modal-body">
                 <p>
diff --git a/docs/search/lunr.js b/docs/search/lunr.js
index c353765..c218cc8 100644
--- a/docs/search/lunr.js
+++ b/docs/search/lunr.js
@@ -1,6 +1,6 @@
 /**
- * lunr - http://lunrjs.com - A bit like Solr, but much smaller and not as bright - 2.3.8
- * Copyright (C) 2019 Oliver Nightingale
+ * lunr - http://lunrjs.com - A bit like Solr, but much smaller and not as bright - 2.1.6
+ * Copyright (C) 2018 Oliver Nightingale
  * @license MIT
  */
 
@@ -54,15 +54,14 @@ var lunr = function (config) {
   return builder.build()
 }
 
-lunr.version = "2.3.8"
+lunr.version = "2.1.6"
 /*!
  * lunr.utils
- * Copyright (C) 2019 Oliver Nightingale
+ * Copyright (C) 2018 Oliver Nightingale
  */
 
 /**
  * A namespace containing utils for the rest of the lunr library
- * @namespace lunr.utils
  */
 lunr.utils = {}
 
@@ -70,8 +69,7 @@ lunr.utils = {}
  * Print a warning message to the console.
  *
  * @param {String} message The message to be printed.
- * @memberOf lunr.utils
- * @function
+ * @memberOf Utils
  */
 lunr.utils.warn = (function (global) {
   /* eslint-disable no-console */
@@ -92,7 +90,7 @@ lunr.utils.warn = (function (global) {
  *
  * @param {Any} obj The object to convert to a string.
  * @return {String} string representation of the passed object.
- * @memberOf lunr.utils
+ * @memberOf Utils
  */
 lunr.utils.asString = function (obj) {
   if (obj === void 0 || obj === null) {
@@ -101,52 +99,6 @@ lunr.utils.asString = function (obj) {
     return obj.toString()
   }
 }
-
-/**
- * Clones an object.
- *
- * Will create a copy of an existing object such that any mutations
- * on the copy cannot affect the original.
- *
- * Only shallow objects are supported, passing a nested object to this
- * function will cause a TypeError.
- *
- * Objects with primitives, and arrays of primitives are supported.
- *
- * @param {Object} obj The object to clone.
- * @return {Object} a clone of the passed object.
- * @throws {TypeError} when a nested object is passed.
- * @memberOf Utils
- */
-lunr.utils.clone = function (obj) {
-  if (obj === null || obj === undefined) {
-    return obj
-  }
-
-  var clone = Object.create(null),
-      keys = Object.keys(obj)
-
-  for (var i = 0; i < keys.length; i++) {
-    var key = keys[i],
-        val = obj[key]
-
-    if (Array.isArray(val)) {
-      clone[key] = val.slice()
-      continue
-    }
-
-    if (typeof val === 'string' ||
-        typeof val === 'number' ||
-        typeof val === 'boolean') {
-      clone[key] = val
-      continue
-    }
-
-    throw new TypeError("clone is not deep and does not support nested objects")
-  }
-
-  return clone
-}
 lunr.FieldRef = function (docRef, fieldName, stringValue) {
   this.docRef = docRef
   this.fieldName = fieldName
@@ -175,139 +127,6 @@ lunr.FieldRef.prototype.toString = function () {
 
   return this._stringValue
 }
-/*!
- * lunr.Set
- * Copyright (C) 2019 Oliver Nightingale
- */
-
-/**
- * A lunr set.
- *
- * @constructor
- */
-lunr.Set = function (elements) {
-  this.elements = Object.create(null)
-
-  if (elements) {
-    this.length = elements.length
-
-    for (var i = 0; i < this.length; i++) {
-      this.elements[elements[i]] = true
-    }
-  } else {
-    this.length = 0
-  }
-}
-
-/**
- * A complete set that contains all elements.
- *
- * @static
- * @readonly
- * @type {lunr.Set}
- */
-lunr.Set.complete = {
-  intersect: function (other) {
-    return other
-  },
-
-  union: function (other) {
-    return other
-  },
-
-  contains: function () {
-    return true
-  }
-}
-
-/**
- * An empty set that contains no elements.
- *
- * @static
- * @readonly
- * @type {lunr.Set}
- */
-lunr.Set.empty = {
-  intersect: function () {
-    return this
-  },
-
-  union: function (other) {
-    return other
-  },
-
-  contains: function () {
-    return false
-  }
-}
-
-/**
- * Returns true if this set contains the specified object.
- *
- * @param {object} object - Object whose presence in this set is to be tested.
- * @returns {boolean} - True if this set contains the specified object.
- */
-lunr.Set.prototype.contains = function (object) {
-  return !!this.elements[object]
-}
-
-/**
- * Returns a new set containing only the elements that are present in both
- * this set and the specified set.
- *
- * @param {lunr.Set} other - set to intersect with this set.
- * @returns {lunr.Set} a new set that is the intersection of this and the specified set.
- */
-
-lunr.Set.prototype.intersect = function (other) {
-  var a, b, elements, intersection = []
-
-  if (other === lunr.Set.complete) {
-    return this
-  }
-
-  if (other === lunr.Set.empty) {
-    return other
-  }
-
-  if (this.length < other.length) {
-    a = this
-    b = other
-  } else {
-    a = other
-    b = this
-  }
-
-  elements = Object.keys(a.elements)
-
-  for (var i = 0; i < elements.length; i++) {
-    var element = elements[i]
-    if (element in b.elements) {
-      intersection.push(element)
-    }
-  }
-
-  return new lunr.Set (intersection)
-}
-
-/**
- * Returns a new set combining the elements of this and the specified set.
- *
- * @param {lunr.Set} other - set to union with this set.
- * @return {lunr.Set} a new set that is the union of this and the specified set.
- */
-
-lunr.Set.prototype.union = function (other) {
-  if (other === lunr.Set.complete) {
-    return lunr.Set.complete
-  }
-
-  if (other === lunr.Set.empty) {
-    return this
-  }
-
-  return new lunr.Set(Object.keys(this.elements).concat(Object.keys(other.elements)))
-}
 /**
  * A function to calculate the inverse document frequency for
  * a posting. This is shared between the builder and the index
@@ -389,7 +208,7 @@ lunr.Token.prototype.clone = function (fn) {
 }
 /*!
  * lunr.tokenizer
- * Copyright (C) 2019 Oliver Nightingale
+ * Copyright (C) 2018 Oliver Nightingale
  */
 
 /**
@@ -401,30 +220,22 @@ lunr.Token.prototype.clone = function (fn) {
  * then will split this string on the character in `lunr.tokenizer.separator`.
  * Arrays will have their elements converted to strings and wrapped in a lunr.Token.
  *
- * Optional metadata can be passed to the tokenizer, this metadata will be cloned and
- * added as metadata to every token that is created from the object to be tokenized.
- *
  * @static
  * @param {?(string|object|object[])} obj - The object to convert into tokens
- * @param {?object} metadata - Optional metadata to associate with every token
  * @returns {lunr.Token[]}
- * @see {@link lunr.Pipeline}
  */
-lunr.tokenizer = function (obj, metadata) {
+lunr.tokenizer = function (obj) {
   if (obj == null || obj == undefined) {
     return []
   }
 
   if (Array.isArray(obj)) {
     return obj.map(function (t) {
-      return new lunr.Token(
-        lunr.utils.asString(t).toLowerCase(),
-        lunr.utils.clone(metadata)
-      )
+      return new lunr.Token(lunr.utils.asString(t).toLowerCase())
     })
   }
 
-  var str = obj.toString().toLowerCase(),
+  var str = obj.toString().trim().toLowerCase(),
       len = str.length,
       tokens = []
 
@@ -435,15 +246,11 @@ lunr.tokenizer = function (obj, metadata) {
     if ((char.match(lunr.tokenizer.separator) || sliceEnd == len)) {
 
       if (sliceLength > 0) {
-        var tokenMetadata = lunr.utils.clone(metadata) || {}
-        tokenMetadata["position"] = [sliceStart, sliceLength]
-        tokenMetadata["index"] = tokens.length
-
         tokens.push(
-          new lunr.Token (
-            str.slice(sliceStart, sliceEnd),
-            tokenMetadata
-          )
+          new lunr.Token (str.slice(sliceStart, sliceEnd), {
+            position: [sliceStart, sliceLength],
+            index: tokens.length
+          })
         )
       }
 
@@ -465,7 +272,7 @@ lunr.tokenizer = function (obj, metadata) {
 lunr.tokenizer.separator = /[\s\-]+/
 /*!
  * lunr.Pipeline
- * Copyright (C) 2019 Oliver Nightingale
+ * Copyright (C) 2018 Oliver Nightingale
  */
 
 /**
@@ -509,8 +316,8 @@ lunr.Pipeline.registeredFunctions = Object.create(null)
  * or mutate (or add) metadata for a given token.
  *
  * A pipeline function can indicate that the passed token should be discarded by returning
- * null, undefined or an empty string. This token will not be passed to any downstream pipeline
- * functions and will not be added to the index.
+ * null. This token will not be passed to any downstream pipeline functions and will not be
+ * added to the index.
  *
  * Multiple tokens can be returned by returning an array of tokens. Each token will be passed
  * to any downstream pipeline functions and all will returned tokens will be added to the index.
@@ -673,9 +480,9 @@ lunr.Pipeline.prototype.run = function (tokens) {
     for (var j = 0; j < tokens.length; j++) {
       var result = fn(tokens[j], j, tokens)
 
-      if (result === null || result === void 0 || result === '') continue
+      if (result === void 0 || result === '') continue
 
-      if (Array.isArray(result)) {
+      if (result instanceof Array) {
         for (var k = 0; k < result.length; k++) {
           memo.push(result[k])
         }
@@ -696,12 +503,10 @@ lunr.Pipeline.prototype.run = function (tokens) {
  * token and mapping the resulting tokens back to strings.
  *
  * @param {string} str - The string to pass through the pipeline.
- * @param {?object} metadata - Optional metadata to associate with the token
- * passed to the pipeline.
  * @returns {string[]}
  */
-lunr.Pipeline.prototype.runString = function (str, metadata) {
-  var token = new lunr.Token (str, metadata)
+lunr.Pipeline.prototype.runString = function (str) {
+  var token = new lunr.Token (str)
 
   return this.run([token]).map(function (t) {
     return t.toString()
@@ -732,7 +537,7 @@ lunr.Pipeline.prototype.toJSON = function () {
 }
 /*!
  * lunr.Vector
- * Copyright (C) 2019 Oliver Nightingale
+ * Copyright (C) 2018 Oliver Nightingale
  */
 
 /**
@@ -893,14 +698,15 @@ lunr.Vector.prototype.dot = function (otherVector) {
 }
 
 /**
- * Calculates the similarity between this vector and another vector.
+ * Calculates the cosine similarity between this vector and another
+ * vector.
  *
  * @param {lunr.Vector} otherVector - The other vector to calculate the
  * similarity with.
  * @returns {Number}
  */
 lunr.Vector.prototype.similarity = function (otherVector) {
-  return this.dot(otherVector) / this.magnitude() || 0
+  return this.dot(otherVector) / (this.magnitude() * otherVector.magnitude())
 }
 
 /**
@@ -929,7 +735,7 @@ lunr.Vector.prototype.toJSON = function () {
 /* eslint-disable */
 /*!
  * lunr.stemmer
- * Copyright (C) 2019 Oliver Nightingale
+ * Copyright (C) 2018 Oliver Nightingale
  * Includes code from - http://tartarus.org/~martin/PorterStemmer/js.txt
  */
 
@@ -942,7 +748,6 @@ lunr.Vector.prototype.toJSON = function () {
  * @param {lunr.Token} token - The string to stem
  * @returns {lunr.Token}
  * @see {@link lunr.Pipeline}
- * @function
  */
 lunr.stemmer = (function(){
   var step2list = {
@@ -1151,7 +956,7 @@ lunr.stemmer = (function(){
 lunr.Pipeline.registerFunction(lunr.stemmer, 'stemmer')
 /*!
  * lunr.stopWordFilter
- * Copyright (C) 2019 Oliver Nightingale
+ * Copyright (C) 2018 Oliver Nightingale
  */
 
 /**
@@ -1161,7 +966,6 @@ lunr.Pipeline.registerFunction(lunr.stemmer, 'stemmer')
  * The built in lunr.stopWordFilter is built using this generator and can be used
  * to generate custom stopWordFilters for applications or non English languages.
  *
- * @function
  * @param {Array} token The token to pass through the filter
  * @returns {lunr.PipelineFunction}
  * @see lunr.Pipeline
@@ -1185,7 +989,6 @@ lunr.generateStopWordFilter = function (stopWords) {
  * This is intended to be used in the Pipeline. If the token does not pass the
  * filter then undefined will be returned.
  *
- * @function
  * @implements {lunr.PipelineFunction}
  * @params {lunr.Token} token - A token to check for being a stop word.
  * @returns {lunr.Token}
@@ -1316,7 +1119,7 @@ lunr.stopWordFilter = lunr.generateStopWordFilter([
 lunr.Pipeline.registerFunction(lunr.stopWordFilter, 'stopWordFilter')
 /*!
  * lunr.trimmer
- * Copyright (C) 2019 Oliver Nightingale
+ * Copyright (C) 2018 Oliver Nightingale
  */
 
 /**
@@ -1343,7 +1146,7 @@ lunr.trimmer = function (token) {
 lunr.Pipeline.registerFunction(lunr.trimmer, 'trimmer')
 /*!
  * lunr.TokenSet
- * Copyright (C) 2019 Oliver Nightingale
+ * Copyright (C) 2018 Oliver Nightingale
  */
 
 /**
@@ -1460,58 +1263,50 @@ lunr.TokenSet.fromFuzzyString = function (str, editDistance) {
 
       if (frame.str.length == 1) {
         noEditNode.final = true
+      } else {
+        stack.push({
+          node: noEditNode,
+          editsRemaining: frame.editsRemaining,
+          str: frame.str.slice(1)
+        })
       }
-
-      stack.push({
-        node: noEditNode,
-        editsRemaining: frame.editsRemaining,
-        str: frame.str.slice(1)
-      })
-    }
-
-    if (frame.editsRemaining == 0) {
-      continue
-    }
-
-    // insertion
-    if ("*" in frame.node.edges) {
-      var insertionNode = frame.node.edges["*"]
-    } else {
-      var insertionNode = new lunr.TokenSet
-      frame.node.edges["*"] = insertionNode
     }
 
-    if (frame.str.length == 0) {
-      insertionNode.final = true
-    }
-
-    stack.push({
-      node: insertionNode,
-      editsRemaining: frame.editsRemaining - 1,
-      str: frame.str
-    })
-
     // deletion
     // can only do a deletion if we have enough edits remaining
     // and if there are characters left to delete in the string
-    if (frame.str.length > 1) {
-      stack.push({
-        node: frame.node,
-        editsRemaining: frame.editsRemaining - 1,
-        str: frame.str.slice(1)
-      })
+    if (frame.editsRemaining > 0 && frame.str.length > 1) {
+      var char = frame.str.charAt(1),
+          deletionNode
+
+      if (char in frame.node.edges) {
+        deletionNode = frame.node.edges[char]
+      } else {
+        deletionNode = new lunr.TokenSet
+        frame.node.edges[char] = deletionNode
+      }
+
+      if (frame.str.length <= 2) {
+        deletionNode.final = true
+      } else {
+        stack.push({
+          node: deletionNode,
+          editsRemaining: frame.editsRemaining - 1,
+          str: frame.str.slice(2)
+        })
+      }
     }
 
     // deletion
     // just removing the last character from the str
-    if (frame.str.length == 1) {
+    if (frame.editsRemaining > 0 && frame.str.length == 1) {
       frame.node.final = true
     }
 
     // substitution
     // can only do a substitution if we have enough edits remaining
     // and if there are characters left to substitute
-    if (frame.str.length >= 1) {
+    if (frame.editsRemaining > 0 && frame.str.length >= 1) {
       if ("*" in frame.node.edges) {
         var substitutionNode = frame.node.edges["*"]
       } else {
@@ -1521,19 +1316,40 @@ lunr.TokenSet.fromFuzzyString = function (str, editDistance) {
 
       if (frame.str.length == 1) {
         substitutionNode.final = true
+      } else {
+        stack.push({
+          node: substitutionNode,
+          editsRemaining: frame.editsRemaining - 1,
+          str: frame.str.slice(1)
+        })
       }
+    }
 
-      stack.push({
-        node: substitutionNode,
-        editsRemaining: frame.editsRemaining - 1,
-        str: frame.str.slice(1)
-      })
+    // insertion
+    // can only do insertion if there are edits remaining
+    if (frame.editsRemaining > 0) {
+      if ("*" in frame.node.edges) {
+        var insertionNode = frame.node.edges["*"]
+      } else {
+        var insertionNode = new lunr.TokenSet
+        frame.node.edges["*"] = insertionNode
+      }
+
+      if (frame.str.length == 0) {
+        insertionNode.final = true
+      } else {
+        stack.push({
+          node: insertionNode,
+          editsRemaining: frame.editsRemaining - 1,
+          str: frame.str
+        })
+      }
     }
 
     // transposition
     // can only do a transposition if there are edits remaining
     // and there are enough characters to transpose
-    if (frame.str.length > 1) {
+    if (frame.editsRemaining > 0 && frame.str.length > 1) {
       var charA = frame.str.charAt(0),
           charB = frame.str.charAt(1),
           transposeNode
@@ -1547,13 +1363,13 @@ lunr.TokenSet.fromFuzzyString = function (str, editDistance) {
 
       if (frame.str.length == 1) {
         transposeNode.final = true
+      } else {
+        stack.push({
+          node: transposeNode,
+          editsRemaining: frame.editsRemaining - 1,
+          str: charA + frame.str.slice(2)
+        })
       }
-
-      stack.push({
-        node: transposeNode,
-        editsRemaining: frame.editsRemaining - 1,
-        str: charA + frame.str.slice(2)
-      })
     }
   }
 
@@ -1572,13 +1388,14 @@ lunr.TokenSet.fromFuzzyString = function (str, editDistance) {
  */
 lunr.TokenSet.fromString = function (str) {
   var node = new lunr.TokenSet,
-      root = node
+      root = node,
+      wildcardFound = false
 
   /*
    * Iterates through all characters within the passed string
    * appending a node for each character.
    *
-   * When a wildcard character is found then a self
+   * As soon as a wildcard character is found then a self
    * referencing edge is introduced to continually match
    * any number of any characters.
    */
@@ -1587,6 +1404,7 @@ lunr.TokenSet.fromString = function (str) {
         final = (i == len - 1)
 
     if (char == "*") {
+      wildcardFound = true
       node.edges[char] = node
       node.final = final
 
@@ -1596,6 +1414,11 @@ lunr.TokenSet.fromString = function (str) {
 
       node.edges[char] = next
       node = next
+
+      // TODO: is this needed anymore?
+      if (wildcardFound) {
+        node.edges["*"] = root
+      }
     }
   }
 
@@ -1606,10 +1429,6 @@ lunr.TokenSet.fromString = function (str) {
  * Converts this TokenSet into an array of strings
  * contained within the TokenSet.
  *
- * This is not intended to be used on a TokenSet that
- * contains wildcards, in these cases the results are
- * undefined and are likely to cause an infinite loop.
- *
  * @returns {string[]}
  */
 lunr.TokenSet.prototype.toArray = function () {
@@ -1626,11 +1445,6 @@ lunr.TokenSet.prototype.toArray = function () {
         len = edges.length
 
     if (frame.node.final) {
-      /* In Safari, at this point the prefix is sometimes corrupted, see:
-       * https://github.com/olivernn/lunr.js/issues/279 Calling any
-       * String.prototype method forces Safari to "cast" this string to what
-       * it's supposed to be, fixing the bug. */
-      frame.prefix.charAt(0)
       words.push(frame.prefix)
     }
 
@@ -1827,7 +1641,7 @@ lunr.TokenSet.Builder.prototype.minimize = function (downTo) {
 }
 /*!
  * lunr.Index
- * Copyright (C) 2019 Oliver Nightingale
+ * Copyright (C) 2018 Oliver Nightingale
  */
 
 /**
@@ -1841,7 +1655,7 @@ lunr.TokenSet.Builder.prototype.minimize = function (downTo) {
  * @constructor
  * @param {Object} attrs - The attributes of the built search index.
  * @param {Object} attrs.invertedIndex - An index of term/field to document reference.
- * @param {Object<string, lunr.Vector>} attrs.fieldVectors - Field vectors
+ * @param {Object<string, lunr.Vector>} attrs.documentVectors - Document vectors keyed by document reference.
  * @param {lunr.TokenSet} attrs.tokenSet - An set of all corpus tokens.
  * @param {string[]} attrs.fields - The names of indexed document fields.
  * @param {lunr.Pipeline} attrs.pipeline - The pipeline to use for search terms.
@@ -1887,12 +1701,6 @@ lunr.Index = function (attrs) {
  * to provide fuzzy matching, e.g. 'hello~2' will match documents with hello with an edit distance of 2.
  * Avoid large values for edit distance to improve query performance.
  *
- * Each term also supports a presence modifier. By default a term's presence in document is optional, however
- * this can be changed to either required or prohibited. For a term's presence to be required in a document the
- * term should be prefixed with a '+', e.g. `+foo bar` is a search for documents that must contain 'foo' and
- * optionally contain 'bar'. Conversely a leading '-' sets the terms presence to prohibited, i.e. it must not
- * appear in a document, e.g. `-foo bar` is a search for documents that do not contain 'foo' but may contain 'bar'.
- *
  * To escape special characters the backslash character '\' can be used, this allows searches to include
  * characters that would normally be considered modifiers, e.g. `foo\~2` will search for a term "foo~2" instead
  * of attempting to apply a boost of 2 to the search term "foo".
@@ -1908,16 +1716,13 @@ lunr.Index = function (attrs) {
  * hello^10
  * @example <caption>term with an edit distance of 2</caption>
  * hello~2
- * @example <caption>terms with presence modifiers</caption>
- * -foo +bar baz
  */
 
 /**
  * Performs a search against the index using lunr query syntax.
  *
  * Results will be returned sorted by their score, the most relevant results
- * will be returned first.  For details on how the score is calculated, please see
- * the {@link https://lunrjs.com/guides/searching.html#scoring|guide}.
+ * will be returned first.
  *
  * For more programmatic querying use lunr.Index#query.
  *
@@ -1968,18 +1773,7 @@ lunr.Index.prototype.query = function (fn) {
   var query = new lunr.Query(this.fields),
       matchingFields = Object.create(null),
       queryVectors = Object.create(null),
-      termFieldCache = Object.create(null),
-      requiredMatches = Object.create(null),
-      prohibitedMatches = Object.create(null)
-
-  /*
-   * To support field level boosts a query vector is created per
-   * field. An empty vector is eagerly created to support negated
-   * queries.
-   */
-  for (var i = 0; i < this.fields.length; i++) {
-    queryVectors[this.fields[i]] = new lunr.Vector
-  }
+      termFieldCache = Object.create(null)
 
   fn.call(query, query)
 
@@ -1993,13 +1787,10 @@ lunr.Index.prototype.query = function (fn) {
      * for a single query term.
      */
     var clause = query.clauses[i],
-        terms = null,
-        clauseMatches = lunr.Set.complete
+        terms = null
 
     if (clause.usePipeline) {
-      terms = this.pipeline.runString(clause.term, {
-        fields: clause.fields
-      })
+      terms = this.pipeline.runString(clause.term)
     } else {
       terms = [clause.term]
     }
@@ -2023,21 +1814,6 @@ lunr.Index.prototype.query = function (fn) {
       var termTokenSet = lunr.TokenSet.fromClause(clause),
           expandedTerms = this.tokenSet.intersect(termTokenSet).toArray()
 
-      /*
-       * If a term marked as required does not exist in the tokenSet it is
-       * impossible for the search to return any matches. We set all the field
-       * scoped required matches set to empty and stop examining any further
-       * clauses.
-       */
-      if (expandedTerms.length === 0 && clause.presence === lunr.Query.presence.REQUIRED) {
-        for (var k = 0; k < clause.fields.length; k++) {
-          var field = clause.fields[k]
-          requiredMatches[field] = lunr.Set.empty
-        }
-
-        break
-      }
-
       for (var j = 0; j < expandedTerms.length; j++) {
         /*
          * For each term get the posting and termIndex, this is required for
@@ -2059,50 +1835,26 @@ lunr.Index.prototype.query = function (fn) {
           var field = clause.fields[k],
               fieldPosting = posting[field],
               matchingDocumentRefs = Object.keys(fieldPosting),
-              termField = expandedTerm + "/" + field,
-              matchingDocumentsSet = new lunr.Set(matchingDocumentRefs)
+              termField = expandedTerm + "/" + field
 
           /*
-           * if the presence of this term is required ensure that the matching
-           * documents are added to the set of required matches for this clause.
+           * To support field level boosts a query vector is created per
+           * field. This vector is populated using the termIndex found for
+           * the term and a unit value with the appropriate boost applied.
            *
+           * If the query vector for this field does not exist yet it needs
+           * to be created.
            */
-          if (clause.presence == lunr.Query.presence.REQUIRED) {
-            clauseMatches = clauseMatches.union(matchingDocumentsSet)
-
-            if (requiredMatches[field] === undefined) {
-              requiredMatches[field] = lunr.Set.complete
-            }
-          }
-
-          /*
-           * if the presence of this term is prohibited ensure that the matching
-           * documents are added to the set of prohibited matches for this field,
-           * creating that set if it does not yet exist.
-           */
-          if (clause.presence == lunr.Query.presence.PROHIBITED) {
-            if (prohibitedMatches[field] === undefined) {
-              prohibitedMatches[field] = lunr.Set.empty
-            }
-
-            prohibitedMatches[field] = prohibitedMatches[field].union(matchingDocumentsSet)
-
-            /*
-             * Prohibited matches should not be part of the query vector used for
-             * similarity scoring and no metadata should be extracted so we continue
-             * to the next field
-             */
-            continue
+          if (queryVectors[field] === undefined) {
+            queryVectors[field] = new lunr.Vector
           }
 
           /*
-           * The query field vector is populated using the termIndex found for
-           * the term and a unit value with the appropriate boost applied.
            * Using upsert because there could already be an entry in the vector
            * for the term we are working with. In that case we just add the scores
            * together.
            */
-          queryVectors[field].upsert(termIndex, clause.boost, function (a, b) { return a + b })
+          queryVectors[field].upsert(termIndex, 1 * clause.boost, function (a, b) { return a + b })
 
           /**
            * If we've already seen this term, field combo then we've already collected
@@ -2136,65 +1888,12 @@ lunr.Index.prototype.query = function (fn) {
         }
       }
     }
-
-    /**
-     * If the presence was required we need to update the requiredMatches field sets.
-     * We do this after all fields for the term have collected their matches because
-     * the clause terms presence is required in _any_ of the fields not _all_ of the
-     * fields.
-     */
-    if (clause.presence === lunr.Query.presence.REQUIRED) {
-      for (var k = 0; k < clause.fields.length; k++) {
-        var field = clause.fields[k]
-        requiredMatches[field] = requiredMatches[field].intersect(clauseMatches)
-      }
-    }
-  }
-
-  /**
-   * Need to combine the field scoped required and prohibited
-   * matching documents into a global set of required and prohibited
-   * matches
-   */
-  var allRequiredMatches = lunr.Set.complete,
-      allProhibitedMatches = lunr.Set.empty
-
-  for (var i = 0; i < this.fields.length; i++) {
-    var field = this.fields[i]
-
-    if (requiredMatches[field]) {
-      allRequiredMatches = allRequiredMatches.intersect(requiredMatches[field])
-    }
-
-    if (prohibitedMatches[field]) {
-      allProhibitedMatches = allProhibitedMatches.union(prohibitedMatches[field])
-    }
   }
 
   var matchingFieldRefs = Object.keys(matchingFields),
       results = [],
       matches = Object.create(null)
 
-  /*
-   * If the query is negated (contains only prohibited terms)
-   * we need to get _all_ fieldRefs currently existing in the
-   * index. This is only done when we know that the query is
-   * entirely prohibited terms to avoid any cost of getting all
-   * fieldRefs unnecessarily.
-   *
-   * Additionally, blank MatchData must be created to correctly
-   * populate the results.
-   */
-  if (query.isNegated()) {
-    matchingFieldRefs = Object.keys(this.fieldVectors)
-
-    for (var i = 0; i < matchingFieldRefs.length; i++) {
-      var matchingFieldRef = matchingFieldRefs[i]
-      var fieldRef = lunr.FieldRef.fromString(matchingFieldRef)
-      matchingFields[matchingFieldRef] = new lunr.MatchData
-    }
-  }
-
   for (var i = 0; i < matchingFieldRefs.length; i++) {
     /*
      * Currently we have document fields that match the query, but we
@@ -2205,17 +1904,8 @@ lunr.Index.prototype.query = function (fn) {
      * above, and combined into a final document score using addition.
      */
     var fieldRef = lunr.FieldRef.fromString(matchingFieldRefs[i]),
-        docRef = fieldRef.docRef
-
-    if (!allRequiredMatches.contains(docRef)) {
-      continue
-    }
-
-    if (allProhibitedMatches.contains(docRef)) {
-      continue
-    }
-
-    var fieldVector = this.fieldVectors[fieldRef],
+        docRef = fieldRef.docRef,
+        fieldVector = this.fieldVectors[fieldRef],
         score = queryVectors[fieldRef.fieldName].similarity(fieldVector),
         docMatch
 
@@ -2280,7 +1970,7 @@ lunr.Index.load = function (serializedIndex) {
   var attrs = {},
       fieldVectors = {},
       serializedVectors = serializedIndex.fieldVectors,
-      invertedIndex = Object.create(null),
+      invertedIndex = {},
       serializedInvertedIndex = serializedIndex.invertedIndex,
       tokenSetBuilder = new lunr.TokenSet.Builder,
       pipeline = lunr.Pipeline.load(serializedIndex.pipeline)
@@ -2319,7 +2009,7 @@ lunr.Index.load = function (serializedIndex) {
 }
 /*!
  * lunr.Builder
- * Copyright (C) 2019 Oliver Nightingale
+ * Copyright (C) 2018 Oliver Nightingale
  */
 
 /**
@@ -2348,8 +2038,7 @@ lunr.Index.load = function (serializedIndex) {
  */
 lunr.Builder = function () {
   this._ref = "id"
-  this._fields = Object.create(null)
-  this._documents = Object.create(null)
+  this._fields = []
   this.invertedIndex = Object.create(null)
   this.fieldTermFrequencies = {}
   this.fieldLengths = {}
@@ -2379,20 +2068,6 @@ lunr.Builder.prototype.ref = function (ref) {
   this._ref = ref
 }
 
-/**
- * A function that is used to extract a field from a document.
- *
- * Lunr expects a field to be at the top level of a document, if however the field
- * is deeply nested within a document an extractor function can be used to extract
- * the right field for indexing.
- *
- * @callback fieldExtractor
- * @param {object} doc - The document being added to the index.
- * @returns {?(string|object|object[])} obj - The object that will be indexed for this field.
- * @example <caption>Extracting a nested field</caption>
- * function (doc) { return doc.nested.field }
- */
-
 /**
  * Adds a field to the list of document fields that will be indexed. Every document being
  * indexed should have this field. Null values for this field in indexed documents will
@@ -2401,22 +2076,10 @@ lunr.Builder.prototype.ref = function (ref) {
  * All fields should be added before adding documents to the index. Adding fields after
  * a document has been indexed will have no effect on already indexed documents.
  *
- * Fields can be boosted at build time. This allows terms within that field to have more
- * importance when ranking search results. Use a field boost to specify that matches within
- * one field are more important than other fields.
- *
- * @param {string} fieldName - The name of a field to index in all documents.
- * @param {object} attributes - Optional attributes associated with this field.
- * @param {number} [attributes.boost=1] - Boost applied to all terms within this field.
- * @param {fieldExtractor} [attributes.extractor] - Function to extract a field from a document.
- * @throws {RangeError} fieldName cannot contain unsupported characters '/'
+ * @param {string} field - The name of a field to index in all documents.
  */
-lunr.Builder.prototype.field = function (fieldName, attributes) {
-  if (/\//.test(fieldName)) {
-    throw new RangeError ("Field '" + fieldName + "' contains illegal character '/'")
-  }
-
-  this._fields[fieldName] = attributes || {}
+lunr.Builder.prototype.field = function (field) {
+  this._fields.push(field)
 }
 
 /**
@@ -2458,27 +2121,17 @@ lunr.Builder.prototype.k1 = function (number) {
  * it should have all fields defined for indexing, though null or undefined values will not
  * cause errors.
  *
- * Entire documents can be boosted at build time. Applying a boost to a document indicates that
- * this document should rank higher in search results than other documents.
- *
  * @param {object} doc - The document to add to the index.
- * @param {object} attributes - Optional attributes associated with this document.
- * @param {number} [attributes.boost=1] - Boost applied to all terms within this document.
  */
-lunr.Builder.prototype.add = function (doc, attributes) {
-  var docRef = doc[this._ref],
-      fields = Object.keys(this._fields)
+lunr.Builder.prototype.add = function (doc) {
+  var docRef = doc[this._ref]
 
-  this._documents[docRef] = attributes || {}
   this.documentCount += 1
 
-  for (var i = 0; i < fields.length; i++) {
-    var fieldName = fields[i],
-        extractor = this._fields[fieldName].extractor,
-        field = extractor ? extractor(doc) : doc[fieldName],
-        tokens = this.tokenizer(field, {
-          fields: [fieldName]
-        }),
+  for (var i = 0; i < this._fields.length; i++) {
+    var fieldName = this._fields[i],
+        field = doc[fieldName],
+        tokens = this.tokenizer(field),
         terms = this.pipeline.run(tokens),
         fieldRef = new lunr.FieldRef (docRef, fieldName),
         fieldTerms = Object.create(null)
@@ -2506,8 +2159,8 @@ lunr.Builder.prototype.add = function (doc, attributes) {
         posting["_index"] = this.termIndex
         this.termIndex += 1
 
-        for (var k = 0; k < fields.length; k++) {
-          posting[fields[k]] = Object.create(null)
+        for (var k = 0; k < this._fields.length; k++) {
+          posting[this._fields[k]] = Object.create(null)
         }
 
         this.invertedIndex[term] = posting
@@ -2558,11 +2211,9 @@ lunr.Builder.prototype.calculateAverageFieldLengths = function () {
     accumulator[field] += this.fieldLengths[fieldRef]
   }
 
-  var fields = Object.keys(this._fields)
-
-  for (var i = 0; i < fields.length; i++) {
-    var fieldName = fields[i]
-    accumulator[fieldName] = accumulator[fieldName] / documentsWithField[fieldName]
+  for (var i = 0; i < this._fields.length; i++) {
+    var field = this._fields[i]
+    accumulator[field] = accumulator[field] / documentsWithField[field]
   }
 
   this.averageFieldLength = accumulator
@@ -2581,17 +2232,13 @@ lunr.Builder.prototype.createFieldVectors = function () {
 
   for (var i = 0; i < fieldRefsLength; i++) {
     var fieldRef = lunr.FieldRef.fromString(fieldRefs[i]),
-        fieldName = fieldRef.fieldName,
+        field = fieldRef.fieldName,
         fieldLength = this.fieldLengths[fieldRef],
         fieldVector = new lunr.Vector,
         termFrequencies = this.fieldTermFrequencies[fieldRef],
         terms = Object.keys(termFrequencies),
         termsLength = terms.length
 
-
-    var fieldBoost = this._fields[fieldName].boost || 1,
-        docBoost = this._documents[fieldRef.docRef].boost || 1
-
     for (var j = 0; j < termsLength; j++) {
       var term = terms[j],
           tf = termFrequencies[term],
@@ -2605,9 +2252,7 @@ lunr.Builder.prototype.createFieldVectors = function () {
         idf = termIdfCache[term]
       }
 
-      score = idf * ((this._k1 + 1) * tf) / (this._k1 * (1 - this._b + this._b * (fieldLength / this.averageFieldLength[fieldName])) + tf)
-      score *= fieldBoost
-      score *= docBoost
+      score = idf * ((this._k1 + 1) * tf) / (this._k1 * (1 - this._b + this._b * (fieldLength / this.averageFieldLength[field])) + tf)
       scoreWithPrecision = Math.round(score * 1000) / 1000
       // Converts 1.23456789 to 1.234.
       // Reducing the precision so that the vectors take up less
@@ -2653,7 +2298,7 @@ lunr.Builder.prototype.build = function () {
     invertedIndex: this.invertedIndex,
     fieldVectors: this.fieldVectors,
     tokenSet: this.tokenSet,
-    fields: Object.keys(this._fields),
+    fields: this._fields,
     pipeline: this.searchPipeline
   })
 }
@@ -2691,7 +2336,7 @@ lunr.Builder.prototype.use = function (fn) {
  */
 lunr.MatchData = function (term, field, metadata) {
   var clonedMetadata = Object.create(null),
-      metadataKeys = Object.keys(metadata || {})
+      metadataKeys = Object.keys(metadata)
 
   // Cloning the metadata to prevent the original
   // being mutated during match data combination.
@@ -2704,11 +2349,8 @@ lunr.MatchData = function (term, field, metadata) {
   }
 
   this.metadata = Object.create(null)
-
-  if (term !== undefined) {
-    this.metadata[term] = Object.create(null)
-    this.metadata[term][field] = clonedMetadata
-  }
+  this.metadata[term] = Object.create(null)
+  this.metadata[term][field] = clonedMetadata
 }
 
 /**
@@ -2823,42 +2465,11 @@ lunr.Query = function (allFields) {
  *   wildcard: lunr.Query.wildcard.LEADING | lunr.Query.wildcard.TRAILING
  * })
  */
-
 lunr.Query.wildcard = new String ("*")
 lunr.Query.wildcard.NONE = 0
 lunr.Query.wildcard.LEADING = 1
 lunr.Query.wildcard.TRAILING = 2
 
-/**
- * Constants for indicating what kind of presence a term must have in matching documents.
- *
- * @constant
- * @enum {number}
- * @see lunr.Query~Clause
- * @see lunr.Query#clause
- * @see lunr.Query#term
- * @example <caption>query term with required presence</caption>
- * query.term('foo', { presence: lunr.Query.presence.REQUIRED })
- */
-lunr.Query.presence = {
-  /**
-   * Term's presence in a document is optional, this is the default value.
-   */
-  OPTIONAL: 1,
-
-  /**
-   * Term's presence in a document is required, documents that do not contain
-   * this term will not be returned.
-   */
-  REQUIRED: 2,
-
-  /**
-   * Term's presence in a document is prohibited, documents that do contain
-   * this term will not be returned.
-   */
-  PROHIBITED: 3
-}
-
 /**
  * A single clause in a {@link lunr.Query} contains a term and details on how to
  * match that term against a {@link lunr.Index}.
@@ -2868,8 +2479,7 @@ lunr.Query.presence = {
  * @property {number} [boost=1] - Any boost that should be applied when matching this clause.
  * @property {number} [editDistance] - Whether the term should have fuzzy matching applied, and how fuzzy the match should be.
  * @property {boolean} [usePipeline] - Whether the term should be passed through the search pipeline.
- * @property {number} [wildcard=lunr.Query.wildcard.NONE] - Whether the term should have wildcards appended or prepended.
- * @property {number} [presence=lunr.Query.presence.OPTIONAL] - The terms presence in any matching documents.
+ * @property {number} [wildcard=0] - Whether the term should have wildcards appended or prepended.
  */
 
 /**
@@ -2907,44 +2517,17 @@ lunr.Query.prototype.clause = function (clause) {
     clause.term = "" + clause.term + "*"
   }
 
-  if (!('presence' in clause)) {
-    clause.presence = lunr.Query.presence.OPTIONAL
-  }
-
   this.clauses.push(clause)
 
   return this
 }
 
-/**
- * A negated query is one in which every clause has a presence of
- * prohibited. These queries require some special processing to return
- * the expected results.
- *
- * @returns boolean
- */
-lunr.Query.prototype.isNegated = function () {
-  for (var i = 0; i < this.clauses.length; i++) {
-    if (this.clauses[i].presence != lunr.Query.presence.PROHIBITED) {
-      return false
-    }
-  }
-
-  return true
-}
-
 /**
  * Adds a term to the current query, under the covers this will create a {@link lunr.Query~Clause}
  * to the list of clauses that make up this query.
  *
- * The term is used as is, i.e. no tokenization will be performed by this method. Instead conversion
- * to a token or token-like string should be done before calling this method.
- *
- * The term will be converted to a string by calling `toString`. Multiple terms can be passed as an
- * array, each term in the array will share the same options.
- *
- * @param {object|object[]} term - The term(s) to add to the query.
- * @param {object} [options] - Any additional properties to add to the query clause.
+ * @param {string} term - The term to add to the query.
+ * @param {Object} [options] - Any additional properties to add to the query clause.
  * @returns {lunr.Query}
  * @see lunr.Query#clause
  * @see lunr.Query~Clause
@@ -2956,17 +2539,10 @@ lunr.Query.prototype.isNegated = function () {
  *   boost: 10,
  *   wildcard: lunr.Query.wildcard.TRAILING
  * })
- * @example <caption>using lunr.tokenizer to convert a string to tokens before using them as terms</caption>
- * query.term(lunr.tokenizer("foo bar"))
  */
 lunr.Query.prototype.term = function (term, options) {
-  if (Array.isArray(term)) {
-    term.forEach(function (t) { this.term(t, lunr.utils.clone(options)) }, this)
-    return this
-  }
-
   var clause = options || {}
-  clause.term = term.toString()
+  clause.term = term
 
   this.clause(clause)
 
@@ -3078,7 +2654,6 @@ lunr.QueryLexer.FIELD = 'FIELD'
 lunr.QueryLexer.TERM = 'TERM'
 lunr.QueryLexer.EDIT_DISTANCE = 'EDIT_DISTANCE'
 lunr.QueryLexer.BOOST = 'BOOST'
-lunr.QueryLexer.PRESENCE = 'PRESENCE'
 
 lunr.QueryLexer.lexField = function (lexer) {
   lexer.backup()
@@ -3167,22 +2742,6 @@ lunr.QueryLexer.lexText = function (lexer) {
       return lunr.QueryLexer.lexBoost
     }
 
-    // "+" indicates term presence is required
-    // checking for length to ensure that only
-    // leading "+" are considered
-    if (char == "+" && lexer.width() === 1) {
-      lexer.emit(lunr.QueryLexer.PRESENCE)
-      return lunr.QueryLexer.lexText
-    }
-
-    // "-" indicates term presence is prohibited
-    // checking for length to ensure that only
-    // leading "-" are considered
-    if (char == "-" && lexer.width() === 1) {
-      lexer.emit(lunr.QueryLexer.PRESENCE)
-      return lunr.QueryLexer.lexText
-    }
-
     if (char.match(lunr.QueryLexer.termSeparator)) {
       return lunr.QueryLexer.lexTerm
     }
@@ -3200,7 +2759,7 @@ lunr.QueryParser.prototype.parse = function () {
   this.lexer.run()
   this.lexemes = this.lexer.lexemes
 
-  var state = lunr.QueryParser.parseClause
+  var state = lunr.QueryParser.parseFieldOrTerm
 
   while (state) {
     state = state(this)
@@ -3225,7 +2784,7 @@ lunr.QueryParser.prototype.nextClause = function () {
   this.currentClause = {}
 }
 
-lunr.QueryParser.parseClause = function (parser) {
+lunr.QueryParser.parseFieldOrTerm = function (parser) {
   var lexeme = parser.peekLexeme()
 
   if (lexeme == undefined) {
@@ -3233,8 +2792,6 @@ lunr.QueryParser.parseClause = function (parser) {
   }
 
   switch (lexeme.type) {
-    case lunr.QueryLexer.PRESENCE:
-      return lunr.QueryParser.parsePresence
     case lunr.QueryLexer.FIELD:
       return lunr.QueryParser.parseField
     case lunr.QueryLexer.TERM:
@@ -3250,43 +2807,6 @@ lunr.QueryParser.parseClause = function (parser) {
   }
 }
 
-lunr.QueryParser.parsePresence = function (parser) {
-  var lexeme = parser.consumeLexeme()
-
-  if (lexeme == undefined) {
-    return
-  }
-
-  switch (lexeme.str) {
-    case "-":
-      parser.currentClause.presence = lunr.Query.presence.PROHIBITED
-      break
-    case "+":
-      parser.currentClause.presence = lunr.Query.presence.REQUIRED
-      break
-    default:
-      var errorMessage = "unrecognised presence operator'" + lexeme.str + "'"
-      throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)
-  }
-
-  var nextLexeme = parser.peekLexeme()
-
-  if (nextLexeme == undefined) {
-    var errorMessage = "expecting term or field, found nothing"
-    throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)
-  }
-
-  switch (nextLexeme.type) {
-    case lunr.QueryLexer.FIELD:
-      return lunr.QueryParser.parseField
-    case lunr.QueryLexer.TERM:
-      return lunr.QueryParser.parseTerm
-    default:
-      var errorMessage = "expecting term or field, found '" + nextLexeme.type + "'"
-      throw new lunr.QueryParseError (errorMessage, nextLexeme.start, nextLexeme.end)
-  }
-}
-
 lunr.QueryParser.parseField = function (parser) {
   var lexeme = parser.consumeLexeme()
 
@@ -3350,9 +2870,6 @@ lunr.QueryParser.parseTerm = function (parser) {
       return lunr.QueryParser.parseEditDistance
     case lunr.QueryLexer.BOOST:
       return lunr.QueryParser.parseBoost
-    case lunr.QueryLexer.PRESENCE:
-      parser.nextClause()
-      return lunr.QueryParser.parsePresence
     default:
       var errorMessage = "Unexpected lexeme type '" + nextLexeme.type + "'"
       throw new lunr.QueryParseError (errorMessage, nextLexeme.start, nextLexeme.end)
@@ -3393,9 +2910,6 @@ lunr.QueryParser.parseEditDistance = function (parser) {
       return lunr.QueryParser.parseEditDistance
     case lunr.QueryLexer.BOOST:
       return lunr.QueryParser.parseBoost
-    case lunr.QueryLexer.PRESENCE:
-      parser.nextClause()
-      return lunr.QueryParser.parsePresence
     default:
       var errorMessage = "Unexpected lexeme type '" + nextLexeme.type + "'"
       throw new lunr.QueryParseError (errorMessage, nextLexeme.start, nextLexeme.end)
@@ -3436,9 +2950,6 @@ lunr.QueryParser.parseBoost = function (parser) {
       return lunr.QueryParser.parseEditDistance
     case lunr.QueryLexer.BOOST:
       return lunr.QueryParser.parseBoost
-    case lunr.QueryLexer.PRESENCE:
-      parser.nextClause()
-      return lunr.QueryParser.parsePresence
     default:
       var errorMessage = "Unexpected lexeme type '" + nextLexeme.type + "'"
       throw new lunr.QueryParseError (errorMessage, nextLexeme.start, nextLexeme.end)
diff --git a/docs/sitemap.xml b/docs/sitemap.xml
index 4a614d3..478a837 100644
--- a/docs/sitemap.xml
+++ b/docs/sitemap.xml
@@ -1,25 +1,31 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"><url>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+    <url>
      <loc>None</loc>
      <lastmod>2020-02-26</lastmod>
      <changefreq>daily</changefreq>
-    </url><url>
+    </url>
+    <url>
      <loc>None</loc>
      <lastmod>2020-02-26</lastmod>
      <changefreq>daily</changefreq>
-    </url><url>
+    </url>
+    <url>
      <loc>None</loc>
      <lastmod>2020-02-26</lastmod>
      <changefreq>daily</changefreq>
-    </url><url>
+    </url>
+    <url>
      <loc>None</loc>
      <lastmod>2020-02-26</lastmod>
      <changefreq>daily</changefreq>
-    </url><url>
+    </url>
+    <url>
      <loc>None</loc>
      <lastmod>2020-02-26</lastmod>
      <changefreq>daily</changefreq>
-    </url><url>
+    </url>
+    <url>
      <loc>None</loc>
      <lastmod>2020-02-26</lastmod>
      <changefreq>daily</changefreq>
diff --git a/docs/sitemap.xml.gz b/docs/sitemap.xml.gz
index 79f65d5..aa9e0b0 100644
Binary files a/docs/sitemap.xml.gz and b/docs/sitemap.xml.gz differ
diff --git a/docs/usage/index.html b/docs/usage/index.html
index 073c0b7..da59d53 100644
--- a/docs/usage/index.html
+++ b/docs/usage/index.html
@@ -14,16 +14,14 @@
     <title>Usage - MIPLearn</title>
     
 
-    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.12.0/css/all.css">
-    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.12.0/css/v4-shims.css">
+    <link rel="stylesheet" href="//use.fontawesome.com/releases/v5.5.0/css/all.css" integrity="sha384-B4dIYHKNBt8Bc12p+WXckhzcICo0wtJAoU8YZTY5qE0Id1GSseTk6S+L3BlXeVIU" crossorigin="anonymous">
     <link rel="stylesheet" href="//cdn.jsdelivr.net/npm/hack-font@3.3.0/build/web/hack.min.css">
-    <link href='//rsms.me/inter/inter.css' rel='stylesheet' type='text/css'>
+    <link href='//fonts.googleapis.com/css?family=PT+Sans:400,400italic,700,700italic&subset=latin-ext,latin' rel='stylesheet' type='text/css'>
     <link href='//fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,700italic,400,300,600,700&subset=latin-ext,latin' rel='stylesheet' type='text/css'>
     <link href="../css/bootstrap-custom.min.css" rel="stylesheet">
     <link href="../css/base.min.css" rel="stylesheet">
     <link href="../css/cinder.min.css" rel="stylesheet">
-
-    
+    <link href="../css/highlight.min.css" rel="stylesheet">
     <link href="../css/custom.css" rel="stylesheet">
 
     <!-- HTML5 shim and Respond.js IE8 support of HTML5 elements and media queries -->
@@ -32,6 +30,15 @@
             <script src="https://cdn.jsdelivr.net/npm/respond.js@1.4.2/dest/respond.min.js"></script>
         <![endif]-->
 
+    <script src="//ajax.googleapis.com/ajax/libs/webfont/1.6.26/webfont.js"></script>
+    <script>
+    WebFont.load({
+        google: {
+            families: ['Open Sans', 'PT Sans']
+        }
+    });
+    </script>
+
     
 
      
@@ -236,17 +243,17 @@ solver.solve(test_instance)
         
         <hr>
         <p>
-        <small>Copyright © 2020, UChicago Argonne, LLC. All Rights Reserved.</small><br>
+        <small>Copyright © 2020, UChicago Argonne, LLC. All Rights Reserved.<br></small>
         
-        <small>Documentation built with <a href="http://www.mkdocs.org/">MkDocs</a>.</small>
-        </p>
+        <small>Documentation built with <a href="http://www.mkdocs.org/">MkDocs</a>.</p></small>
 
         
         
     </footer>
     <script src="//ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
     <script src="../js/bootstrap-3.0.3.min.js"></script>
-    
+    <script src="../js/highlight.pack.js"></script>
+    <script>hljs.initHighlightingOnLoad();</script>
     <script>var base_url = ".."</script>
     
     <script src="../js/base.js"></script>
@@ -258,11 +265,8 @@ solver.solve(test_instance)
     <div class="modal-dialog modal-lg">
         <div class="modal-content">
             <div class="modal-header">
-                <button type="button" class="close" data-dismiss="modal">
-                    <span aria-hidden="true">&times;</span>
-                    <span class="sr-only">Close</span>
-                </button>
                 <h4 class="modal-title" id="searchModalLabel">Search</h4>
+                <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
             </div>
             <div class="modal-body">
                 <p>