Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:09:59 2012 Optimize a model with 431 rows, 600 columns and 1774 nonzeros Presolve removed 50 rows and 2 columns Presolve time: 0.01s Presolved: 405 rows, 598 columns, 2198 nonzeros Variable types: 0 continuous, 598 integer (598 binary) Found heuristic solution: objective 24.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 34 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 (34 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%