Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:20:27 2013 Optimize a model with 109823 rows, 7569 columns and 333036 nonzeros Presolve removed 13059 rows and 3911 columns Presolve time: 1.16s Presolved: 96764 rows, 3658 columns, 292978 nonzeros Variable types: 32 continuous, 3626 integer (3626 binary) Found heuristic solution: objective 188353.00000 Root relaxation: objective 1.572861e+05, 22047 iterations, 3.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 157286.053 0 12 188353.000 157286.053 16.5% - 4s H 0 0 157304.00000 157286.053 0.01% - 4s H 0 0 157296.00000 157286.053 0.01% - 4s Explored 0 nodes (22088 simplex iterations) in 4.79 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.572960000000e+05, best bound 1.572870000000e+05, gap 0.0057%