Gurobi 5.0.1 (linux64) logging started Wed Apr 24 12:22:13 2013 Optimize a model with 1870 rows, 289170 columns and 578170 nonzeros Presolve time: 0.77s Presolved: 1870 rows, 289170 columns, 578170 nonzeros Variable types: 289000 continuous, 170 integer (170 binary) Root relaxation: objective 3.309173e+05, 11005 iterations, 1.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 330917.258 0 8 - 330917.258 - - 2s H 0 0 360896.00000 330917.258 8.31% - 2s H 0 0 334352.00000 330917.258 1.03% - 3s 0 0 331288.873 0 8 334352.000 331288.873 0.92% - 4s 0 0 331288.873 0 8 334352.000 331288.873 0.92% - 6s 0 0 331289.292 0 8 334352.000 331289.292 0.92% - 7s 0 0 331358.587 0 6 334352.000 331358.587 0.90% - 8s 0 0 331373.885 0 3 334352.000 331373.885 0.89% - 8s 0 0 331376.061 0 4 334352.000 331376.061 0.89% - 8s 0 0 331377.729 0 4 334352.000 331377.729 0.89% - 9s 0 0 331379.345 0 4 334352.000 331379.345 0.89% - 9s 0 0 331379.345 0 4 334352.000 331379.345 0.89% - 9s 0 0 331379.345 0 4 334352.000 331379.345 0.89% - 10s 0 0 331379.345 0 4 334352.000 331379.345 0.89% - 10s 0 2 331393.079 0 4 334352.000 331393.079 0.88% - 11s H 2 2 331770.27397 331533.257 0.07% 171 12s H 6 6 331708.00000 331535.935 0.05% 72.2 12s Cutting planes: Implied bound: 157 Flow cover: 1 Explored 28 nodes (22710 simplex iterations) in 14.36 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.317080000000e+05, best bound 3.317080000000e+05, gap 0.0%