Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:18:46 2013 Optimize a model with 106081 rows, 7396 columns and 321726 nonzeros Presolve removed 14328 rows and 3852 columns Presolve time: 1.15s Presolved: 91753 rows, 3544 columns, 277246 nonzeros Variable types: 24 continuous, 3520 integer (3520 binary) Found heuristic solution: objective 179182.00000 Root relaxation: objective 1.527193e+05, 15639 iterations, 2.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 152719.316 0 8 179182.000 152719.316 14.8% - 3s H 0 0 152727.00000 152719.316 0.01% - 3s Explored 0 nodes (15663 simplex iterations) in 3.52 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.527270000000e+05, best bound 1.527200000000e+05, gap 0.0046%