Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:28:47 2013 Optimize a model with 129858 rows, 8464 columns and 393576 nonzeros Presolve removed 11791 rows and 4333 columns Presolve time: 1.38s Presolved: 118067 rows, 4131 columns, 357049 nonzeros Variable types: 32 continuous, 4099 integer (4099 binary) Found heuristic solution: objective 193902.00000 Root relaxation: objective 1.525889e+05, 18431 iterations, 2.58 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 152588.886 0 17 193902.000 152588.886 21.3% - 4s H 0 0 152611.00000 152588.886 0.01% - 4s H 0 0 152605.00000 152588.886 0.01% - 4s H 0 0 152596.00000 152588.886 0.00% - 4s Explored 0 nodes (18583 simplex iterations) in 4.67 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.525960000000e+05, best bound 1.525890000000e+05, gap 0.0046%