Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:28:35 2013 Optimize a model with 129858 rows, 8464 columns and 393576 nonzeros Presolve removed 5306 rows and 4245 columns Presolve time: 1.22s Presolved: 124552 rows, 4219 columns, 377661 nonzeros Variable types: 45 continuous, 4174 integer (4174 binary) Found heuristic solution: objective 201345.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 33997 1.2806406e+05 0.000000e+00 4.360542e+07 5s 47841 1.3694469e+05 0.000000e+00 0.000000e+00 7s 47841 1.3694469e+05 0.000000e+00 0.000000e+00 7s Root relaxation: objective 1.369447e+05, 47841 iterations, 6.78 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 136944.689 0 16 201345.000 136944.689 32.0% - 8s H 0 0 136969.00000 136944.689 0.02% - 8s H 0 0 136961.00000 136944.689 0.01% - 8s H 0 0 136956.00000 136944.689 0.01% - 8s Explored 0 nodes (47914 simplex iterations) in 8.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.369560000000e+05, best bound 1.369450000000e+05, gap 0.0080%