Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:29:29 2013 Optimize a model with 134137 rows, 8649 columns and 406503 nonzeros Presolve removed 14505 rows and 4457 columns Presolve time: 1.59s Presolved: 119632 rows, 4192 columns, 361682 nonzeros Variable types: 31 continuous, 4161 integer (4161 binary) Found heuristic solution: objective 220601.00000 Root relaxation: objective 1.847229e+05, 26439 iterations, 4.13 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 184722.947 0 9 220601.000 184722.947 16.3% - 6s H 0 0 184736.00000 184722.947 0.01% - 6s Explored 0 nodes (26479 simplex iterations) in 6.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.847360000000e+05, best bound 1.847230000000e+05, gap 0.0070%