Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:35:37 2013 Optimize a model with 147536 rows, 9216 columns and 446976 nonzeros Presolve removed 11119 rows and 4692 columns Presolve time: 1.61s Presolved: 136417 rows, 4524 columns, 412504 nonzeros Variable types: 35 continuous, 4489 integer (4489 binary) Found heuristic solution: objective 214326.00000 Root relaxation: objective 1.673475e+05, 26308 iterations, 3.73 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 167347.532 0 12 214326.000 167347.532 21.9% - 6s H 0 0 167364.00000 167347.532 0.01% - 6s Explored 0 nodes (26445 simplex iterations) in 6.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.673640000000e+05, best bound 1.673480000000e+05, gap 0.0096%