Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:40:51 2012 Optimize a model with 10085 rows, 15252 columns and 44893 nonzeros Presolve removed 32 rows and 3692 columns Presolve time: 0.17s Presolved: 10053 rows, 11560 columns, 41039 nonzeros Variable types: 0 continuous, 11560 integer (11560 binary) Found heuristic solution: objective 123.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 175 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 74 3.00000 2.00000 33.3% - 0s 0 0 infeasible 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (315 simplex iterations) in 0.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%