Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:32:04 2012 Optimize a model with 42008 rows, 40602 columns and 165622 nonzeros Presolve removed 431 rows and 5429 columns Presolve time: 1.03s Presolved: 41577 rows, 35173 columns, 158776 nonzeros Variable types: 0 continuous, 35173 integer (35173 binary) Found heuristic solution: objective 201.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 330 iterations, 0.02 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 (330 simplex iterations) in 1.15 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%