Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:20:54 2013 Optimize a model with 109823 rows, 7569 columns and 333036 nonzeros Presolve removed 8045 rows and 3849 columns Presolve time: 1.10s Presolved: 101778 rows, 3720 columns, 307853 nonzeros Variable types: 30 continuous, 3690 integer (3690 binary) Found heuristic solution: objective 184288.00000 Root relaxation: objective 1.438551e+05, 21461 iterations, 2.60 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 143855.143 0 11 184288.000 143855.143 21.9% - 4s H 0 0 143863.00000 143855.143 0.01% - 4s Explored 0 nodes (21559 simplex iterations) in 4.24 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.438630000000e+05, best bound 1.438560000000e+05, gap 0.0049%