Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:39:01 2013 Optimize a model with 152193 rows, 9409 columns and 461041 nonzeros Presolve removed 8796 rows and 4755 columns Presolve time: 2.10s Presolved: 143397 rows, 4654 columns, 434131 nonzeros Variable types: 42 continuous, 4612 integer (4612 binary) Found heuristic solution: objective 179599.00000 Root relaxation: objective 1.305680e+05, 23753 iterations, 3.69 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 130568.020 0 10 179599.000 130568.020 27.3% - 6s H 0 0 130576.00000 130568.020 0.01% - 6s Explored 0 nodes (23831 simplex iterations) in 6.57 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.305760000000e+05, best bound 1.305690000000e+05, gap 0.0054%