Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:39:19 2013 Optimize a model with 156947 rows, 9604 columns and 475398 nonzeros Presolve removed 8554 rows and 4844 columns Presolve time: 1.97s Presolved: 148393 rows, 4760 columns, 449641 nonzeros Variable types: 47 continuous, 4713 integer (4713 binary) Found heuristic solution: objective 219143.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 27176 1.5041892e+05 0.000000e+00 1.629923e+08 5s 50321 1.6570930e+05 0.000000e+00 0.000000e+00 8s 50321 1.6570930e+05 0.000000e+00 0.000000e+00 8s Root relaxation: objective 1.657093e+05, 50321 iterations, 8.43 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 165709.298 0 19 219143.000 165709.298 24.4% - 11s H 0 0 165731.00000 165709.298 0.01% - 11s H 0 0 165723.00000 165709.298 0.01% - 11s Explored 0 nodes (50578 simplex iterations) in 11.55 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.657230000000e+05, best bound 1.657100000000e+05, gap 0.0078%