Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:26:09 2013 Optimize a model with 1600 rows, 100800 columns and 201700 nonzeros Presolve removed 200 rows and 300 columns Presolve time: 0.32s Presolved: 1400 rows, 100500 columns, 201000 nonzeros Variable types: 100400 continuous, 100 integer (100 binary) Root relaxation: objective 9.053666e+05, 5676 iterations, 0.37 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 905366.638 0 2 - 905366.638 - - 0s H 0 0 925632.03755 905366.638 2.19% - 0s H 0 0 920393.93002 905366.638 1.63% - 1s 0 0 905392.638 0 2 920393.930 905392.638 1.63% - 1s 0 0 905440.477 0 2 920393.930 905440.477 1.62% - 2s 0 0 905442.787 0 2 920393.930 905442.787 1.62% - 2s 0 0 905442.787 0 2 920393.930 905442.787 1.62% - 2s 0 0 905449.224 0 2 920393.930 905449.224 1.62% - 3s 0 0 905449.224 0 2 920393.930 905449.224 1.62% - 3s 0 0 905457.794 0 2 920393.930 905457.794 1.62% - 3s 0 0 905459.559 0 2 920393.930 905459.559 1.62% - 3s 0 0 905460.036 0 2 920393.930 905460.036 1.62% - 4s 0 0 905461.248 0 2 920393.930 905461.248 1.62% - 4s 0 0 905462.133 0 2 920393.930 905462.133 1.62% - 4s 0 0 905462.359 0 2 920393.930 905462.359 1.62% - 4s 0 0 905462.752 0 2 920393.930 905462.752 1.62% - 5s 0 0 905462.752 0 2 920393.930 905462.752 1.62% - 5s 0 2 905472.860 0 2 920393.930 905472.860 1.62% - 6s * 17 7 16 907923.98716 906520.968 0.15% 110 8s 24 5 907401.443 7 1 907923.987 906821.471 0.12% 108 10s Cutting planes: Flow cover: 26 Explored 39 nodes (11982 simplex iterations) in 13.91 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.079239871585e+05, best bound 9.078920981665e+05, gap 0.0035%