Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:32:15 2013 Optimize a model with 138509 rows, 8836 columns and 419710 nonzeros Presolve removed 8469 rows and 4469 columns Presolve time: 1.62s Presolved: 130040 rows, 4367 columns, 393848 nonzeros Variable types: 41 continuous, 4326 integer (4326 binary) Found heuristic solution: objective 209154.00000 Root relaxation: objective 1.607485e+05, 31061 iterations, 4.54 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 160748.462 0 9 209154.000 160748.462 23.1% - 6s H 0 0 160757.00000 160748.462 0.01% - 6s Explored 0 nodes (31151 simplex iterations) in 6.98 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.607570000000e+05, best bound 1.607490000000e+05, gap 0.0050%