Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:37:58 2013 Optimize a model with 152193 rows, 9409 columns and 461041 nonzeros Presolve removed 8451 rows and 4750 columns Presolve time: 1.84s Presolved: 143742 rows, 4659 columns, 435267 nonzeros Variable types: 43 continuous, 4616 integer (4616 binary) Found heuristic solution: objective 212136.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 33760 1.4314905e+05 0.000000e+00 4.063134e+06 5s 40219 1.4702942e+05 0.000000e+00 0.000000e+00 6s 40219 1.4702942e+05 0.000000e+00 0.000000e+00 6s Root relaxation: objective 1.470294e+05, 40219 iterations, 6.15 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 147029.417 0 17 212136.000 147029.417 30.7% - 8s H 0 0 147040.00000 147029.417 0.01% - 8s Explored 0 nodes (40424 simplex iterations) in 8.98 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.470400000000e+05, best bound 1.470300000000e+05, gap 0.0068%