Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:33:45 2013 Optimize a model with 142975 rows, 9025 columns and 433200 nonzeros Presolve removed 11580 rows and 4594 columns Presolve time: 1.70s Presolved: 131395 rows, 4431 columns, 398417 nonzeros Variable types: 46 continuous, 4385 integer (4385 binary) Found heuristic solution: objective 192049.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 33947 1.4031421e+05 0.000000e+00 2.644583e+06 5s 38580 1.4433357e+05 0.000000e+00 0.000000e+00 6s 38580 1.4433357e+05 0.000000e+00 0.000000e+00 6s Root relaxation: objective 1.443336e+05, 38580 iterations, 5.80 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 144333.571 0 9 192049.000 144333.571 24.8% - 8s H 0 0 144355.00000 144333.571 0.01% - 8s H 0 0 144349.00000 144333.571 0.01% - 8s H 0 0 144345.00000 144333.571 0.01% - 8s Explored 0 nodes (38669 simplex iterations) in 8.51 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.443450000000e+05, best bound 1.443340000000e+05, gap 0.0076%