Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:22:44 2013 Optimize a model with 2400 rows, 107100 columns and 233100 nonzeros Presolve removed 100 rows and 2500 columns Presolve time: 0.26s Presolved: 2300 rows, 104600 columns, 229100 nonzeros Variable types: 104100 continuous, 500 integer (500 binary) Root relaxation: objective 9.053666e+05, 5867 iterations, 0.40 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 905366.638 0 6 - 905366.638 - - 0s H 0 0 1167852.4821 905366.638 22.5% - 1s 0 0 905393.038 0 6 1167852.48 905393.038 22.5% - 1s 0 0 905439.931 0 6 1167852.48 905439.931 22.5% - 1s H 0 0 910176.25595 905439.931 0.52% - 2s 0 0 905439.931 0 6 910176.256 905439.931 0.52% - 2s 0 0 905445.084 0 6 910176.256 905445.084 0.52% - 2s 0 0 905450.767 0 6 910176.256 905450.767 0.52% - 3s 0 0 905453.494 0 6 910176.256 905453.494 0.52% - 3s 0 0 905457.795 0 6 910176.256 905457.795 0.52% - 3s 0 0 905459.011 0 6 910176.256 905459.011 0.52% - 3s 0 0 905459.547 0 6 910176.256 905459.547 0.52% - 3s 0 0 905459.776 0 6 910176.256 905459.776 0.52% - 4s 0 0 905459.916 0 6 910176.256 905459.916 0.52% - 4s 0 0 905459.916 0 6 910176.256 905459.916 0.52% - 5s 0 2 905467.017 0 6 910176.256 905467.017 0.52% - 6s 12 11 907861.792 12 3 910176.256 906266.789 0.43% 129 10s * 23 10 23 908013.94925 906266.789 0.19% 74.5 11s 40 19 907700.702 16 3 908013.949 906822.599 0.13% 93.5 15s Cutting planes: Flow cover: 21 Explored 94 nodes (16724 simplex iterations) in 19.41 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.080139492532e+05, best bound 9.079234570951e+05, gap 0.0100%