Gurobi 5.0.1 (linux64) logging started Fri Jan 18 03:32:32 2013 Optimize a model with 11600 rows, 120300 columns and 270500 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.96s Presolved: 11500 rows, 120200 columns, 260400 nonzeros Variable types: 110200 continuous, 10000 integer (10000 binary) Root relaxation: objective 8.654105e+05, 11180 iterations, 1.46 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 865410.545 0 4 - 865410.545 - - 2s 0 0 865472.964 0 4 - 865472.964 - - 6s 0 0 865487.692 0 4 - 865487.692 - - 6s 0 0 865490.412 0 4 - 865490.412 - - 7s 0 0 865490.904 0 4 - 865490.904 - - 7s 0 0 865493.290 0 4 - 865493.290 - - 8s 0 0 865494.138 0 4 - 865494.138 - - 8s 0 0 865494.138 0 4 - 865494.138 - - 8s 0 0 865494.138 0 4 - 865494.138 - - 9s 0 0 865494.138 0 4 - 865494.138 - - 10s 0 0 865494.138 0 4 - 865494.138 - - 11s 0 2 865494.138 0 4 - 865494.138 - - 18s 1 3 866599.521 1 4 - 865494.138 - 1493 20s 9 11 870072.815 5 4 - 866564.739 - 429 25s 18 20 867354.873 9 2 - 866564.739 - 339 30s * 31 15 16 867835.85010 866564.739 0.15% 302 34s 33 11 867522.510 3 4 867835.850 866564.739 0.15% 297 35s H 87 6 866925.19490 866599.521 0.04% 132 40s * 89 2 26 866849.82663 866599.521 0.03% 129 40s Cutting planes: Implied bound: 33 Flow cover: 8 Explored 106 nodes (25909 simplex iterations) in 41.72 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.668498266279e+05, best bound 8.667645567306e+05, gap 0.0098%