Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:26:14 2013 Optimize a model with 125671 rows, 8281 columns and 380926 nonzeros Presolve removed 9220 rows and 4211 columns Presolve time: 1.35s Presolved: 116451 rows, 4070 columns, 352256 nonzeros Variable types: 33 continuous, 4037 integer (4037 binary) Found heuristic solution: objective 181454.00000 Root relaxation: objective 1.390275e+05, 23963 iterations, 3.41 seconds Total elapsed time = 5.11s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 139027.474 0 12 181454.000 139027.474 23.4% - 5s H 0 0 139050.00000 139027.474 0.02% - 5s H 0 0 139046.00000 139027.474 0.01% - 5s H 0 0 139040.00000 139027.474 0.01% - 5s Explored 0 nodes (24301 simplex iterations) in 5.65 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.390400000000e+05, best bound 1.390280000000e+05, gap 0.0086%