Add benchmark script and instances

infinity/benchmark/mir/p0282.pre.log

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+[      0.00] multirow (git-f8ddaa22007511cf6b9141ace0aee243155733e8)
+[      0.00] cpu133 2015-12-15 10:27
+[      0.00] Compile-time parameters:
+[      0.00]     EPSILON: 1.000000e-09
+[      0.00]     GREEDY_BIG_E: 1.000000e+03
+[      0.00]     GREEDY_MAX_GAP: 1.000000e-04
+[      0.00]     MAX_CUTS: -1
+[      0.00]     MAXIMUM_SCORE: 9.500000e-01
+[      0.00]     MAX_TOTAL_TIME: -1
+[      0.00]     MINIMUM_SCORE: 5.000000e-02
+[      0.00]     TRIVIAL_LIFTING_ENABLED: 0
+[      0.00] Command line arguments:
+[      0.00]     ./multirow --mir --problem instances/miplib3/p0282.pre.mps.gz --basis bases/miplib3/p0282.pre.bas --log mir/miplib3/p0282.pre.log --stats mir/miplib3/p0282.pre.yaml --solution solutions/miplib3/p0282.pre.x 
+[      0.00] Reading problem instances/miplib3/p0282.pre.mps.gz...
+[      0.00]     165 rows, 366 cols
+[      0.00] Storing column types...
+[      0.00] Relaxing integrality...
+[      0.00] Disabling presolve...
+[      0.00] Reading basis from file bases/miplib3/p0282.pre.bas...
+[      0.00] Optimizing...
+[      0.00]     opt = 180000.300231
+[      0.00] Reading tableau rows...
+[      0.00] Reading solution from solutions/miplib3/p0282.pre.x
+[      0.00] Adding MIR cuts...
+[      0.00]     opt = 180037.407196
+[      0.00]     opt = 180160.830263
+[      0.00]     opt = 180179.629604
+[      0.01]     opt = 180253.269188
+[      0.01]     opt = 180257.843263
+[      0.01]     opt = 180468.079837
+[      0.01]     opt = 180570.838577
+[      0.01]     opt = 180617.920227
+[      0.01]     opt = 180679.367449
+[      0.01]     opt = 180770.488577
+[      0.01]     opt = 182212.908696
+[      0.01]     opt = 182279.072575
+[      0.01]     opt = 182300.739242
+[      0.01]     opt = 182489.525064
+[      0.01]     opt = 182504.525064
+[      0.01] Optimizing...
+[      0.01]     opt = 182504.525064
+[      0.01] Writing stats to file mir/miplib3/p0282.pre.yaml...