Gurobi 5.0.1 (linux64) logging started Wed Apr 24 08:06:08 2013 Optimize a model with 93216 rows, 92256 columns and 368736 nonzeros Presolve removed 4526 rows and 0 columns Presolve time: 0.65s Presolved: 88690 rows, 92256 columns, 359684 nonzeros Variable types: 92160 continuous, 96 integer (96 binary) Root relaxation: objective 1.221904e+05, 18785 iterations, 4.70 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 122190.405 0 4 - 122190.405 - - 5s H 0 0 124594.00000 122190.405 1.93% - 6s H 0 0 122491.00000 122190.405 0.25% - 6s 0 0 122190.952 0 6 122491.000 122190.952 0.24% - 7s 0 0 122190.952 0 4 122491.000 122190.952 0.24% - 10s 0 0 122190.993 0 6 122491.000 122190.993 0.24% - 11s 0 0 122190.993 0 6 122491.000 122190.993 0.24% - 11s 0 0 122190.993 0 6 122491.000 122190.993 0.24% - 12s H 0 0 122377.00000 122190.993 0.15% - 13s 0 2 122199.206 0 6 122377.000 122199.206 0.15% - 14s 9 8 122315.000 8 1 122377.000 122247.678 0.11% 61.0 15s Cutting planes: Gomory: 3 Flow cover: 8 Explored 40 nodes (29114 simplex iterations) in 16.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.223770000000e+05, best bound 1.223770000000e+05, gap 0.0%