Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:00:32 2012 Optimize a model with 7039 rows, 12210 columns and 32778 nonzeros Presolve removed 222 rows and 2 columns Presolve time: 0.13s Presolved: 6927 rows, 12208 columns, 44204 nonzeros Variable types: 0 continuous, 12208 integer (12208 binary) Found heuristic solution: objective 110.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 158 iterations, 0.00 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% - 0s Explored 0 nodes (158 simplex iterations) in 0.15 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%