Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:31:53 2013 Optimize a model with 138509 rows, 8836 columns and 419710 nonzeros Presolve removed 12798 rows and 4524 columns Presolve time: 1.64s Presolved: 125711 rows, 4312 columns, 380404 nonzeros Variable types: 36 continuous, 4276 integer (4276 binary) Found heuristic solution: objective 189233.00000 Root relaxation: objective 1.424687e+05, 29751 iterations, 3.98 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 142468.682 0 9 189233.000 142468.682 24.7% - 6s H 0 0 142482.00000 142468.682 0.01% - 6s Explored 0 nodes (29813 simplex iterations) in 6.32 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.424820000000e+05, best bound 1.424690000000e+05, gap 0.0091%