Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:30:26 2013 Optimize a model with 134137 rows, 8649 columns and 406503 nonzeros Presolve removed 10328 rows and 4404 columns Presolve time: 1.52s Presolved: 123809 rows, 4245 columns, 374573 nonzeros Variable types: 35 continuous, 4210 integer (4210 binary) Found heuristic solution: objective 198851.00000 Root relaxation: objective 1.562840e+05, 23370 iterations, 3.22 seconds Total elapsed time = 5.10s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 156283.950 0 9 198851.000 156283.950 21.4% - 5s H 0 0 156309.00000 156283.950 0.02% - 5s H 0 0 156298.00000 156283.950 0.01% - 5s Explored 0 nodes (23556 simplex iterations) in 5.46 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.562980000000e+05, best bound 1.562840000000e+05, gap 0.0090%