Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:44:01 2012 Optimize a model with 4559 rows, 9120 columns and 22323 nonzeros Presolve removed 192 rows and 2 columns Presolve time: 0.14s Presolved: 4462 rows, 9118 columns, 30781 nonzeros Variable types: 0 continuous, 9118 integer (9118 binary) Found heuristic solution: objective 95.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 135 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 (135 simplex iterations) in 0.16 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%