Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:04:18 2013 Optimize a model with 59711 rows, 5041 columns and 181476 nonzeros Presolve removed 5152 rows and 2565 columns Presolve time: 0.42s Presolved: 54559 rows, 2476 columns, 165717 nonzeros Variable types: 30 continuous, 2446 integer (2446 binary) Found heuristic solution: objective 126115.00000 Root relaxation: objective 9.903018e+04, 20912 iterations, 2.16 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 99030.1818 0 11 126115.000 99030.1818 21.5% - 2s H 0 0 99041.000000 99030.1818 0.01% - 2s H 0 0 99039.000000 99030.1818 0.01% - 2s Explored 0 nodes (21173 simplex iterations) in 2.94 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.903900000000e+04, best bound 9.903100000000e+04, gap 0.0081%