Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:41:05 2013 Optimize a model with 2600 rows, 102300 columns and 207500 nonzeros Presolve removed 200 rows and 200 columns Presolve time: 0.82s Presolved: 2400 rows, 102100 columns, 206800 nonzeros Variable types: 101200 continuous, 900 integer (900 binary) Root relaxation: objective 8.951303e+05, 6904 iterations, 0.98 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 895130.293 0 4 - 895130.293 - - 2s H 0 0 1022485.5503 895130.293 12.5% - 2s H 0 0 900789.75719 895130.293 0.63% - 3s 0 0 895191.950 0 4 900789.757 895191.950 0.62% - 3s 0 0 895215.672 0 4 900789.757 895215.672 0.62% - 3s 0 0 895238.714 0 4 900789.757 895238.714 0.62% - 4s 0 0 895245.330 0 4 900789.757 895245.330 0.62% - 4s 0 0 895246.702 0 4 900789.757 895246.702 0.62% - 4s 0 0 895249.757 0 4 900789.757 895249.757 0.62% - 5s 0 0 895256.833 0 4 900789.757 895256.833 0.61% - 5s 0 0 895257.904 0 4 900789.757 895257.904 0.61% - 5s 0 0 895258.956 0 4 900789.757 895258.956 0.61% - 6s 0 0 895259.963 0 4 900789.757 895259.963 0.61% - 6s 0 0 895260.344 0 4 900789.757 895260.344 0.61% - 6s 0 0 895261.343 0 4 900789.757 895261.343 0.61% - 7s 0 0 895261.410 0 4 900789.757 895261.410 0.61% - 7s 0 0 895261.410 0 4 900789.757 895261.410 0.61% - 8s 0 2 895261.797 0 4 900789.757 895261.797 0.61% - 9s 6 7 895550.054 6 1 900789.757 895526.232 0.58% 73.5 10s H 27 6 898252.98116 895526.232 0.30% 39.3 14s 33 7 895914.698 33 1 898252.981 895526.232 0.30% 34.4 15s 74 14 896435.314 74 1 898252.981 895526.232 0.30% 23.7 20s 114 20 896841.691 114 1 898252.981 895526.232 0.30% 20.7 25s 156 22 897440.605 156 1 898252.981 895526.232 0.30% 19.9 30s 209 24 897373.246 6 3 898252.981 895711.855 0.28% 20.7 35s 332 129 897993.597 126 1 898252.981 895711.855 0.28% 16.6 40s 471 247 897220.874 33 1 898252.981 896038.226 0.25% 18.1 45s 601 357 897980.113 124 4 898252.981 896546.546 0.19% 18.6 51s 610 363 898114.774 174 1 898252.981 896546.546 0.19% 18.3 55s 630 364 896546.546 24 1 898252.981 896546.546 0.19% 36.7 60s 672 355 896546.546 61 1 898252.981 896546.546 0.19% 36.5 65s 722 343 896930.175 107 1 898252.981 896546.546 0.19% 35.4 70s * 773 304 156 898026.86403 896546.546 0.16% 34.0 74s 783 300 897835.136 166 1 898026.864 896546.546 0.16% 33.8 75s 823 292 897105.678 32 1 898026.864 896546.546 0.16% 38.1 80s 872 279 897446.268 14 1 898026.864 896559.236 0.16% 38.8 85s * 895 237 27 896949.94038 896559.236 0.04% 39.7 87s * 900 217 21 896634.43616 896618.706 0.00% 39.8 87s Cutting planes: Gomory: 2 Flow cover: 7 Explored 901 nodes (43533 simplex iterations) in 87.98 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.966344361626e+05, best bound 8.966187063874e+05, gap 0.0018%