Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:04:57 2013 Optimize a model with 62268 rows, 5184 columns and 189216 nonzeros Presolve removed 6999 rows and 2670 columns Presolve time: 0.48s Presolved: 55269 rows, 2514 columns, 167393 nonzeros Variable types: 23 continuous, 2491 integer (2491 binary) Found heuristic solution: objective 129779.00000 Root relaxation: objective 1.034794e+05, 11672 iterations, 0.96 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 103479.352 0 11 129779.000 103479.352 20.3% - 1s H 0 0 103491.00000 103479.352 0.01% - 1s 0 0 103481.468 0 21 103491.000 103481.468 0.01% - 1s Cutting planes: Gomory: 7 Implied bound: 2 MIR: 7 Explored 0 nodes (11765 simplex iterations) in 1.90 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.034910000000e+05, best bound 1.034820000000e+05, gap 0.0087%