Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:26:07 2013 Optimize a model with 125671 rows, 8281 columns and 380926 nonzeros Presolve removed 15501 rows and 4294 columns Presolve time: 1.37s Presolved: 110170 rows, 3987 columns, 333236 nonzeros Variable types: 31 continuous, 3956 integer (3956 binary) Found heuristic solution: objective 212569.00000 Root relaxation: objective 1.767638e+05, 17149 iterations, 2.26 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 176763.842 0 7 212569.000 176763.842 16.8% - 4s H 0 0 176772.00000 176763.842 0.00% - 4s Explored 0 nodes (17180 simplex iterations) in 4.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.767720000000e+05, best bound 1.767640000000e+05, gap 0.0045%