Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:31:34 2013 Optimize a model with 138509 rows, 8836 columns and 419710 nonzeros Presolve removed 13814 rows and 4543 columns Presolve time: 1.60s Presolved: 124695 rows, 4293 columns, 376631 nonzeros Variable types: 28 continuous, 4265 integer (4265 binary) Found heuristic solution: objective 206327.00000 Root relaxation: objective 1.699114e+05, 16205 iterations, 2.36 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 169911.379 0 12 206327.000 169911.379 17.6% - 4s H 0 0 169923.00000 169911.379 0.01% - 4s Explored 0 nodes (16244 simplex iterations) in 4.62 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.699230000000e+05, best bound 1.699120000000e+05, gap 0.0065%