Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:45:01 2013 Optimize a model with 166750 rows, 10000 columns and 505000 nonzeros Presolve removed 12227 rows and 5084 columns Presolve time: 1.98s Presolved: 154523 rows, 4916 columns, 467740 nonzeros Variable types: 43 continuous, 4873 integer (4873 binary) Found heuristic solution: objective 229891.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 27600 1.6340487e+05 0.000000e+00 1.509966e+07 5s 45602 1.7289877e+05 0.000000e+00 0.000000e+00 8s 45602 1.7289877e+05 0.000000e+00 0.000000e+00 8s Root relaxation: objective 1.728988e+05, 45602 iterations, 7.78 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 172898.771 0 17 229891.000 172898.771 24.8% - 10s H 0 0 172916.00000 172898.771 0.01% - 10s Explored 0 nodes (45704 simplex iterations) in 10.64 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.729160000000e+05, best bound 1.728990000000e+05, gap 0.0098%