Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:50:08 2012 Optimize a model with 41729 rows, 38220 columns and 162433 nonzeros Presolve removed 418 rows and 5072 columns Presolve time: 1.11s Presolved: 41311 rows, 33148 columns, 155964 nonzeros Variable types: 0 continuous, 33148 integer (33148 binary) Found heuristic solution: objective 195.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 314 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 infeasible 0 3.00000 2.00000 33.3% - 1s Explored 0 nodes (314 simplex iterations) in 1.24 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%