Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:38:10 2013 Optimize a model with 152193 rows, 9409 columns and 461041 nonzeros Presolve removed 12771 rows and 4804 columns Presolve time: 1.81s Presolved: 139422 rows, 4605 columns, 421743 nonzeros Variable types: 37 continuous, 4568 integer (4568 binary) Found heuristic solution: objective 209715.00000 Root relaxation: objective 1.637707e+05, 21576 iterations, 2.86 seconds Total elapsed time = 5.07s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 163770.709 0 12 209715.000 163770.709 21.9% - 5s H 0 0 163783.00000 163770.709 0.01% - 5s Explored 0 nodes (21650 simplex iterations) in 5.42 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.637830000000e+05, best bound 1.637710000000e+05, gap 0.0073%