Add single-row cut generator

onerow/benchmark/out/30n20b8.pre.log

@@ -0,0 +1,7 @@
+[      0.00] Reading input file: instances/30n20b8.pre.mps.gz...
+[      0.00] Fetched 406 rows, 5077 cols.
+[      0.00] Solving first relaxation...
+[      0.36]     93.274056 [optimal]                    
+[      0.36] Reading basis...
+
+                                                       

onerow/benchmark/out/bienst2.log

@@ -0,0 +1,32 @@
+version: benchmark.run
+machine: mensa
+[      0.00] Reading input file: instances/bienst2.pre.mps.gz...
+[      0.00] Fetched 520 rows, 898 cols.
+[      0.00] Solving first relaxation...
+[      0.00]     11.724138 [optimal]                    
+[      0.00] Reading basis...
+
+                                                       
+[      0.01] Generating MIR cuts...
+[      0.01] Finding interesting rows...
+[      3.22]     33 rows found
+[      3.22] Starting timer 1...
+version: benchmark.run
+machine: mensa
+[      0.00] Reading input file: instances/bienst2.pre.mps.gz...
+[      0.00] Fetched 520 rows, 898 cols.
+[      0.00] Solving first relaxation...
+[      0.00]     11.724138 [optimal]                    
+[      0.00] Reading basis...
+
+                                                       
+[      0.01] Generating MIR cuts...
+[      0.01] Finding interesting rows...
+[      3.00]     33 rows found
+[      3.00] Starting timer 1...
+[      3.20] Ending timer 1: 0.20s
+                 
+                                                       
+[      3.20] Added 33 violated cuts...
+[      3.22]     14.442185 [optimal]                    
+[      3.22] Generating wedge cuts...

onerow/benchmark/out/bienst2.yaml

@@ -0,0 +1,36 @@
+input_file:
+  instances/bienst2.pre.mps.gz
+sol_value:
+  0: 11.724138
+  1: 14.442185
+  2: 14.442185
+sol_status:
+  0: optimal
+  1: optimal
+  2: optimal
+n_added_cuts:
+  total:
+    33
+  depth:
+    0: 33
+n_generated_cuts:
+  total:
+    41
+  round:
+    1: 33
+    2: 8
+  depth:
+    0: 41
+trivial_lifting:
+  max_m: 0
+  average_m: 0.000000
+  integral_coefficients: 0.002685
+  slowdown: 0.000000
+timers:
+  1: 0.2040
+  2: 0.3680
+cut_speed:
+  round_1: 0.0062
+  round_2: 0.0460
+mip_value:
+  54.600000

onerow/benchmark/out/csched010.log

@@ -0,0 +1,17 @@
+version: benchmark.run
+machine: mensa
+[      0.00] Reading input file: instances/csched010.pre.mps.gz...
+[      0.00] Fetched 271 rows, 1679 cols.
+[      0.00] Solving first relaxation...
+[      0.07]     332.422727 [optimal]                    
+[      0.07] Reading basis...
+
+                                                       
+[      0.08] Generating MIR cuts...
+[      0.08] Finding interesting rows...
+[      3.42]     84 rows found
+[      3.42] Starting timer 1...
+[      5.77] Ending timer 1: 2.35s
+                 
+                                                       
+[      5.79] Added 84 violated cuts...

onerow/benchmark/out/danoint.log

@@ -0,0 +1,21 @@
+version: benchmark.run
+machine: mensa
+[      0.00] Reading input file: instances/danoint.pre.mps.gz...
+[      0.00] Fetched 600 rows, 978 cols.
+[      0.00] Solving first relaxation...
+[      0.03]     62.637280 [optimal]                    
+[      0.03] Reading basis...
+
+                                                       
+[      0.04] Generating MIR cuts...
+[      0.04] Finding interesting rows...
+[     10.11]     52 rows found
+[     10.11] Starting timer 1...
+[     10.85] Ending timer 1: 0.74s
+                 
+                                                       
+[     10.86] Added 52 violated cuts...
+[     10.90]     62.690000 [optimal]                    
+[     10.90] Generating wedge cuts...
+[     10.90] Starting timer 2...
+[     13.15] Ending timer 2: 2.26s

onerow/benchmark/out/danoint.yaml

@@ -0,0 +1,44 @@
+input_file:
+  instances/danoint.pre.mps.gz
+sol_value:
+  0: 62.637280
+  1: 62.690000
+  2: 62.690000
+sol_status:
+  0: optimal
+  1: optimal
+  2: optimal
+n_added_cuts:
+  total:
+    52
+  depth:
+    0: 52
+n_generated_cuts:
+  total:
+    593
+  round:
+    1: 52
+    2: 541
+  depth:
+    0: 145
+    1: 93
+    2: 93
+    3: 84
+    4: 75
+    5: 58
+    6: 33
+    7: 10
+    8: 2
+trivial_lifting:
+  max_m: 1035
+  average_m: 61.002773
+  integral_coefficients: 0.005403
+  slowdown: 0.329606
+timers:
+  1: 0.7440
+  2: 2.2560
+cut_speed:
+  round_1: 0.0143
+  round_2: 0.0042
+mip_value:
+  65.666700

onerow/benchmark/out/dfn-gwin-UUM.log

@@ -0,0 +1,21 @@
+version: benchmark.run
+machine: mensa
+[      0.00] Reading input file: instances/dfn-gwin-UUM.pre.mps.gz...
+[      0.01] Fetched 156 rows, 984 cols.
+[      0.01] Solving first relaxation...
+[      0.02]     27467.257235 [optimal]                    
+[      0.02] Reading basis...
+
+                                                       
+[      0.02] Generating MIR cuts...
+[      0.02] Finding interesting rows...
+[      0.17]     45 rows found
+[      0.17] Starting timer 1...
+[      0.27] Ending timer 1: 0.10s
+                 
+                                                       
+[      0.28] Added 45 violated cuts...
+[      0.29]     32186.983731 [optimal]                    
+[      0.29] Generating wedge cuts...
+[      0.29] Starting timer 2...
+[      0.61] Ending timer 2: 0.32s

onerow/benchmark/out/dfn-gwin-UUM.yaml

@@ -0,0 +1,37 @@
+input_file:
+  instances/dfn-gwin-UUM.pre.mps.gz
+sol_value:
+  0: 27467.257235
+  1: 32186.983731
+  2: 32195.320369
+sol_status:
+  0: optimal
+  1: optimal
+  2: optimal
+n_added_cuts:
+  total:
+    46
+  depth:
+    0: 45
+    1: 1
+n_generated_cuts:
+  total:
+    201
+  round:
+    1: 45
+    2: 156
+  depth:
+    0: 90
+    1: 44
+    2: 30
+    3: 27
+    4: 9
+    5: 1
+timers:
+  1: 0.1000
+  2: 0.3240
+cut_speed:
+  round_1: 0.0022
+  round_2: 0.0021
+mip_value:
+  38752.000000

onerow/benchmark/out/enlight13.log

@@ -0,0 +1,21 @@
+version: benchmark.run
+machine: mensa
+[      0.00] Reading input file: instances/enlight13.pre.mps.gz...
+[      0.00] Fetched 169 rows, 339 cols.
+[      0.00] Solving first relaxation...
+[      0.00]     1.000000 [optimal]                    
+[      0.00] Reading basis...
+
+                                                       
+[      0.00] Generating MIR cuts...
+[      0.00] Finding interesting rows...
+[      0.03]     2 rows found
+[      0.04] Starting timer 1...
+[      0.04] Ending timer 1: 0.00s
+                 
+                                                       
+[      0.05] Added 2 violated cuts...
+[      0.05]     1.500000 [optimal]                    
+[      0.05] Generating wedge cuts...
+[      0.05] Starting timer 2...
+[      0.06] Ending timer 2: 0.01s

onerow/benchmark/out/enlight13.yaml

@@ -0,0 +1,36 @@
+input_file:
+  instances/enlight13.pre.mps.gz
+sol_value:
+  0: 1.000000
+  1: 1.500000
+  2: 1.500000
+sol_status:
+  0: optimal
+  1: optimal
+  2: optimal
+n_added_cuts:
+  total:
+    2
+  depth:
+    0: 2
+n_generated_cuts:
+  total:
+    10
+  round:
+    1: 2
+    2: 8
+  depth:
+    0: 10
+trivial_lifting:
+  max_m: 1
+  average_m: 0.750000
+  integral_coefficients: 0.750000
+  slowdown: 0.562500
+timers:
+  1: 0.0000
+  2: 0.0080
+cut_speed:
+  round_1: 0.0000
+  round_2: 0.0010
+mip_value:
+  71.000000

onerow/benchmark/out/glass4.log

@@ -0,0 +1,28 @@
+version: benchmark.run
+machine: mensa
+[      0.00] Reading input file: instances/glass4.pre.mps.gz...
+[      0.00] Fetched 392 rows, 674 cols.
+[      0.00] Solving first relaxation...
+[      0.00]     800002400.000000 [optimal]                    
+[      0.00] Reading basis...
+version: benchmark.run
+machine: mensa
+[      0.00] Reading input file: instances/glass4.pre.mps.gz...
+[      0.00] Fetched 392 rows, 674 cols.
+[      0.00] Solving first relaxation...
+[      0.00]     800002400.000000 [optimal]                    
+[      0.00] Reading basis...
+
+                                                       
+[      0.01] Generating MIR cuts...
+[      0.01] Finding interesting rows...
+[      0.08]     72 rows found
+[      0.08] Starting timer 1...
+[      0.10] Ending timer 1: 0.02s
+                 
+                                                       
+[      0.12] Added 72 violated cuts...
+[      0.12]     1269062192.116870 [optimal]                    
+[      0.12] Generating wedge cuts...
+[      0.12] Starting timer 2...
+[      0.19] Ending timer 2: 0.07s

onerow/benchmark/out/glass4.yaml

@@ -0,0 +1,36 @@
+input_file:
+  instances/glass4.pre.mps.gz
+sol_value:
+  0: 800002400.000000
+  1: 1269062192.116870
+  2: 1269062192.116883
+sol_status:
+  0: optimal
+  1: optimal
+  2: optimal
+n_added_cuts:
+  total:
+    72
+  depth:
+    0: 72
+n_generated_cuts:
+  total:
+    298
+  round:
+    1: 72
+    2: 226
+  depth:
+    0: 298
+trivial_lifting:
+  max_m: 0
+  average_m: 0.000000
+  integral_coefficients: 0.518489
+  slowdown: 0.000000
+timers:
+  1: 0.0240
+  2: 0.0720
+cut_speed:
+  round_1: 0.0003
+  round_2: 0.0003
+mip_value:
+  1200010000.000000

onerow/benchmark/out/mik-250-1-100-1.log

@@ -0,0 +1,31 @@
+version: benchmark.run
+machine: mensa
+[      0.00] Reading input file: instances/mik-250-1-100-1.pre.mps.gz...
+[      0.00] Fetched 100 rows, 352 cols.
+[      0.00] Solving first relaxation...
+[      0.00]     -79842.423635 [optimal]                    
+[      0.00] Reading basis...
+
+                                                       
+[      0.00] Generating MIR cuts...
+[      0.00] Finding interesting rows...
+[      0.21]     100 rows found
+[      0.22] Starting timer 1...
+[      0.42]     -72824.000000 [optimal]                    
+[      0.42] Ending timer 1: 0.20s
+                 
+                                                       
+[      0.43] Added 100 violated cuts...
+[      0.43]     -72824.000000 [optimal]                    
+[      0.43] Generating wedge cuts...
+[      0.43] Starting timer 2...
+[      0.97]     -72659.578424 [optimal]                    
+[      1.34]     -72398.775758 [optimal]                    
+[      2.65]     -71934.177977 [optimal]                    
+[      3.47]     -71625.914521 [optimal]                    
+[      4.02]     -71357.200706 [optimal]                    
+
+ 26%  ETA: 2017-04-05 11:23:32  26 / 100
+[      5.10]     -71103.868040 [optimal]                    
+[      7.52]     -70668.685770 [optimal]                    
+

onerow/benchmark/out/mik-250-1-100-1.yaml

@@ -0,0 +1,55 @@
+input_file:
+  instances/mik-250-1-100-1.pre.mps.gz
+sol_value:
+  0: -79842.423635
+  1: -72824.000000
+  2: -70219.174256
+sol_status:
+  0: optimal
+  1: optimal
+  2: optimal
+n_added_cuts:
+  total:
+    1055
+  depth:
+    0: 100
+    1: 110
+    2: 306
+    3: 294
+    4: 157
+    5: 65
+    6: 20
+    7: 2
+    8: 1
+n_generated_cuts:
+  total:
+    30321
+  round:
+    1: 100
+    2: 30221
+  depth:
+    0: 5197
+    1: 5082
+    2: 5042
+    3: 4686
+    4: 4146
+    5: 3132
+    6: 1897
+    7: 826
+    8: 256
+    9: 48
+    10: 8
+    11: 1
+trivial_lifting:
+  max_m: 1405
+  average_m: 45.731028
+  integral_coefficients: 0.944252
+  slowdown: 43.181598
+timers:
+  1: 0.2040
+  2: 13.3800
+cut_speed:
+  round_1: 0.0020
+  round_2: 0.0004
+mip_value:
+  -66729.000000

onerow/benchmark/out/newdano.log

@@ -0,0 +1,21 @@
+version: benchmark.run
+machine: mensa
+[      0.00] Reading input file: instances/newdano.pre.mps.gz...
+[      0.00] Fetched 520 rows, 898 cols.
+[      0.00] Solving first relaxation...
+[      0.00]     11.724138 [optimal]                    
+[      0.00] Reading basis...
+
+                                                       
+[      0.02] Generating MIR cuts...
+[      0.02] Finding interesting rows...
+[      3.05]     52 rows found
+[      3.05] Starting timer 1...
+[      3.33] Ending timer 1: 0.28s
+                 
+                                                       
+[      3.34] Added 52 violated cuts...
+[      3.36]     14.442185 [optimal]                    
+[      3.36] Generating wedge cuts...
+[      3.36] Starting timer 2...
+[      3.79] Ending timer 2: 0.44s

onerow/benchmark/out/newdano.yaml

@@ -0,0 +1,36 @@
+input_file:
+  instances/newdano.pre.mps.gz
+sol_value:
+  0: 11.724138
+  1: 14.442185
+  2: 14.442185
+sol_status:
+  0: optimal
+  1: optimal
+  2: optimal
+n_added_cuts:
+  total:
+    52
+  depth:
+    0: 52
+n_generated_cuts:
+  total:
+    72
+  round:
+    1: 52
+    2: 20
+  depth:
+    0: 72
+trivial_lifting:
+  max_m: 0
+  average_m: 0.000000
+  integral_coefficients: 0.002313
+  slowdown: 0.000000
+timers:
+  1: 0.2800
+  2: 0.4360
+cut_speed:
+  round_1: 0.0054
+  round_2: 0.0218
+mip_value:
+  65.666700

onerow/benchmark/out/noswot.log

@@ -0,0 +1,21 @@
+version: benchmark.run
+machine: mensa
+[      0.00] Reading input file: instances/noswot.pre.mps.gz...
+[      0.00] Fetched 172 rows, 293 cols.
+[      0.00] Solving first relaxation...
+[      0.00]     -43.000000 [optimal]                    
+[      0.00] Reading basis...
+
+                                                       
+[      0.00] Generating MIR cuts...
+[      0.00] Finding interesting rows...
+[      0.11]     49 rows found
+[      0.11] Starting timer 1...
+[      0.14] Ending timer 1: 0.04s
+                 
+                                                       
+[      0.15] Added 49 violated cuts...
+[      0.15]     -43.000000 [optimal]                    
+[      0.15] Generating wedge cuts...
+[      0.15] Starting timer 2...
+[      0.70] Ending timer 2: 0.54s

onerow/benchmark/out/noswot.yaml

@@ -0,0 +1,46 @@
+input_file:
+  instances/noswot.pre.mps.gz
+sol_value:
+  0: -43.000000
+  1: -43.000000
+  2: -43.000000
+sol_status:
+  0: optimal
+  1: optimal
+  2: optimal
+n_added_cuts:
+  total:
+    54
+  depth:
+    0: 49
+    1: 5
+n_generated_cuts:
+  total:
+    1089
+  round:
+    1: 49
+    2: 1040
+  depth:
+    0: 294
+    1: 207
+    2: 200
+    3: 142
+    4: 103
+    5: 72
+    6: 42
+    7: 19
+    8: 8
+    9: 2
+trivial_lifting:
+  max_m: 755
+  average_m: 31.524828
+  integral_coefficients: 0.571790
+  slowdown: 18.025587
+timers:
+  1: 0.0360
+  2: 0.5440
+cut_speed:
+  round_1: 0.0007
+  round_2: 0.0005
+mip_value:
+  -41.000000

onerow/benchmark/out/pigeon-10.log

@@ -0,0 +1,22 @@
+version: benchmark.run
+machine: mensa
+[      0.00] Reading input file: instances/pigeon-10.pre.mps.gz...
+[      0.00] Fetched 525 rows, 866 cols.
+[      0.00] Solving first relaxation...
+[      0.01]     -10000.000000 [optimal]                    
+[      0.01] Reading basis...
+
+                                                       
+[      0.02] Generating MIR cuts...
+[      0.02] Finding interesting rows...
+[      0.12]     126 rows found
+[      0.12] Starting timer 1...
+[      0.17]     -10000.000000 [optimal]                    
+[      0.18] Ending timer 1: 0.06s
+                 
+                                                       
+[      0.18] Added 112 violated cuts...
+[      0.19]     -10000.000000 [optimal]                    
+[      0.19] Generating wedge cuts...
+[      0.19] Starting timer 2...
+[      0.90] Ending timer 2: 0.71s

onerow/benchmark/out/pigeon-10.yaml

@@ -0,0 +1,42 @@
+input_file:
+  instances/pigeon-10.pre.mps.gz
+sol_value:
+  0: -10000.000000
+  1: -10000.000000
+  2: -10000.000000
+sol_status:
+  0: optimal
+  1: optimal
+  2: optimal
+n_added_cuts:
+  total:
+    112
+  depth:
+    0: 112
+n_generated_cuts:
+  total:
+    2237
+  round:
+    1: 126
+    2: 2111
+  depth:
+    0: 1189
+    1: 495
+    2: 324
+    3: 135
+    4: 79
+    5: 11
+    6: 4
+trivial_lifting:
+  max_m: 910
+  average_m: 8.150823
+  integral_coefficients: 0.534935
+  slowdown: 4.360160
+timers:
+  1: 0.0600
+  2: 0.7080
+cut_speed:
+  round_1: 0.0005
+  round_2: 0.0003
+mip_value:
+  -9000.000000

onerow/benchmark/out/qiu.log

@@ -0,0 +1,21 @@
+version: benchmark.run
+machine: mensa
+[      0.00] Reading input file: instances/qiu.pre.mps.gz...
+[      0.00] Fetched 1192 rows, 1901 cols.
+[      0.00] Solving first relaxation...
+[      0.03]     -931.638854 [optimal]                    
+[      0.03] Reading basis...
+
+                                                       
+[      0.07] Generating MIR cuts...
+[      0.07] Finding interesting rows...
+[      7.61]     36 rows found
+[      7.61] Starting timer 1...
+[      8.18] Ending timer 1: 0.58s
+                 
+                                                       
+[      8.19] Added 36 violated cuts...
+[      8.26]     -919.644028 [optimal]                    
+[      8.26] Generating wedge cuts...
+[      8.26] Starting timer 2...
+[      9.27] Ending timer 2: 1.02s

onerow/benchmark/out/qiu.yaml

@@ -0,0 +1,30 @@
+input_file:
+  instances/qiu.pre.mps.gz
+sol_value:
+  0: -931.638854
+  1: -919.644028
+  2: -919.644028
+sol_status:
+  0: optimal
+  1: optimal
+  2: optimal
+n_added_cuts:
+  total:
+    36
+  depth:
+    0: 36
+n_generated_cuts:
+  total:
+    36
+  round:
+    1: 36
+  depth:
+    0: 36
+timers:
+  1: 0.5760
+  2: 1.0160
+cut_speed:
+  round_1: 0.0160
+  round_2: inf
+mip_value:
+  -132.873000

onerow/benchmark/out/ran16x16.log

@@ -0,0 +1,21 @@
+version: benchmark.run
+machine: mensa
+[      0.00] Reading input file: instances/ran16x16.pre.mps.gz...
+[      0.00] Fetched 288 rows, 769 cols.
+[      0.00] Solving first relaxation...
+[      0.00]     3116.429512 [optimal]                    
+[      0.00] Reading basis...
+
+                                                       
+[      0.01] Generating MIR cuts...
+[      0.01] Finding interesting rows...
+[      0.12]     20 rows found
+[      0.12] Starting timer 1...
+[      0.19] Ending timer 1: 0.07s
+                 
+                                                       
+[      0.20] Added 20 violated cuts...
+[      0.21]     3238.332602 [optimal]                    
+[      0.21] Generating wedge cuts...
+[      0.21] Starting timer 2...
+[      1.51] Ending timer 2: 1.30s

onerow/benchmark/out/ran16x16.yaml

@@ -0,0 +1,43 @@
+input_file:
+  instances/ran16x16.pre.mps.gz
+sol_value:
+  0: 3116.429512
+  1: 3238.332602
+  2: 3244.082675
+sol_status:
+  0: optimal
+  1: optimal
+  2: optimal
+n_added_cuts:
+  total:
+    72
+  depth:
+    0: 20
+    1: 41
+    2: 10
+    3: 1
+n_generated_cuts:
+  total:
+    1716
+  round:
+    1: 20
+    2: 1696
+  depth:
+    0: 903
+    1: 471
+    2: 285
+    3: 54
+    4: 3
+trivial_lifting:
+  max_m: 45
+  average_m: 3.522548
+  integral_coefficients: 0.440125
+  slowdown: 1.550363
+timers:
+  1: 0.0680
+  2: 1.3000
+cut_speed:
+  round_1: 0.0034
+  round_2: 0.0008
+mip_value:
+  3823.000000

onerow/benchmark/out/timtab1.log

@@ -0,0 +1,22 @@
+version: benchmark.run
+machine: mensa
+[      0.00] Reading input file: instances/timtab1.pre.mps.gz...
+[      0.00] Fetched 166 rows, 379 cols.
+[      0.00] Solving first relaxation...
+[      0.00]     28694.000000 [optimal]                    
+[      0.00] Reading basis...
+
+                                                       
+[      0.00] Generating MIR cuts...
+[      0.00] Finding interesting rows...
+[      0.06]     135 rows found
+[      0.06] Starting timer 1...
+[      0.09]     112659.532725 [optimal]                    
+[      0.10] Ending timer 1: 0.05s
+                 
+                                                       
+[      0.11] Added 121 violated cuts...
+[      0.11]     205801.284255 [optimal]                    
+[      0.11] Generating wedge cuts...
+[      0.11] Starting timer 2...
+[      0.19] Ending timer 2: 0.08s

onerow/benchmark/out/timtab1.yaml

@@ -0,0 +1,36 @@
+input_file:
+  instances/timtab1.pre.mps.gz
+sol_value:
+  0: 28694.000000
+  1: 205801.284255
+  2: 205801.284255
+sol_status:
+  0: optimal
+  1: optimal
+  2: optimal
+n_added_cuts:
+  total:
+    121
+  depth:
+    0: 121
+n_generated_cuts:
+  total:
+    250
+  round:
+    1: 135
+    2: 115
+  depth:
+    0: 250
+trivial_lifting:
+  max_m: 0
+  average_m: 0.000000
+  integral_coefficients: 0.088368
+  slowdown: 0.000000
+timers:
+  1: 0.0480
+  2: 0.0800
+cut_speed:
+  round_1: 0.0004
+  round_2: 0.0007
+mip_value:
+  764772.000000