Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:10:02 2012 Optimize a model with 571 rows, 702 columns and 2286 nonzeros Presolve removed 61 rows and 184 columns Presolve time: 0.02s Presolved: 510 rows, 518 columns, 1934 nonzeros Variable types: 0 continuous, 518 integer (518 binary) Found heuristic solution: objective 26.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 31 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 (31 simplex iterations) in 0.02 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%