Gurobi 5.0.1 (linux64) logging started Sat Jan 26 21:35:44 2013 Optimize a model with 30 rows, 100 columns and 3000 nonzeros Presolve time: 0.01s Presolved: 30 rows, 100 columns, 3000 nonzeros Variable types: 0 continuous, 100 integer (100 binary) Found heuristic solution: objective 58924.000000 Root relaxation: objective 6.114016e+04, 58 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 61140.1591 0 19 58924.0000 61140.1591 3.76% - 0s H 0 0 60405.000000 61140.1591 1.22% - 0s 0 0 61128.1254 0 19 60405.0000 61128.1254 1.20% - 0s 0 0 61118.7003 0 20 60405.0000 61118.7003 1.18% - 0s 0 0 61113.1019 0 19 60405.0000 61113.1019 1.17% - 0s 0 0 61110.2203 0 20 60405.0000 61110.2203 1.17% - 0s 0 0 61108.7291 0 17 60405.0000 61108.7291 1.17% - 0s 0 0 61106.7033 0 18 60405.0000 61106.7033 1.16% - 0s H 0 0 60554.000000 61106.7033 0.91% - 0s 0 2 61106.6449 0 18 60554.0000 61106.6449 0.91% - 0s H 60 58 60574.000000 61091.7823 0.85% 5.1 0s H 1731 896 60603.000000 61027.2516 0.70% 5.5 0s 39427 19643 60767.5083 33 16 60603.0000 60863.8878 0.43% 6.1 5s 53406 23319 60837.1815 42 12 60603.0000 60861.9171 0.43% 6.1 10s 95716 27517 60661.8551 51 10 60603.0000 60844.3411 0.40% 6.0 15s 138790 39458 60723.6471 39 13 60603.0000 60813.2441 0.35% 6.0 20s 183149 50816 60624.0824 45 10 60603.0000 60792.6577 0.31% 6.0 25s 228589 59875 60738.0513 44 13 60603.0000 60777.0212 0.29% 5.9 30s 273939 66652 60669.5822 44 12 60603.0000 60764.2993 0.27% 5.9 35s 320610 72045 60640.0921 51 12 60603.0000 60753.1887 0.25% 5.8 40s 367022 75499 60712.3254 40 11 60603.0000 60743.3021 0.23% 5.8 45s 414046 77388 60696.4538 50 11 60603.0000 60734.0850 0.22% 5.8 50s 461328 77463 60624.5820 42 14 60603.0000 60725.4409 0.20% 5.7 55s 508867 75569 60684.3252 44 13 60603.0000 60716.5656 0.19% 5.7 60s 557263 71709 60642.1668 58 8 60603.0000 60707.8513 0.17% 5.7 65s 606670 65469 60624.7523 44 14 60603.0000 60698.4963 0.16% 5.6 70s 655412 56340 60630.2940 42 14 60603.0000 60688.2534 0.14% 5.6 75s 704943 43277 cutoff 47 60603.0000 60675.3924 0.12% 5.6 80s 755086 23005 cutoff 50 60603.0000 60654.2736 0.08% 5.5 85s Cutting planes: Gomory: 12 Explored 786390 nodes (4278825 simplex iterations) in 87.71 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.060300000000e+04, best bound 6.060900000000e+04, gap 0.0099%