Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:32:57 2012 Optimize a model with 8022 rows, 5112 columns and 28824 nonzeros Presolve removed 571 rows and 73 columns Presolve time: 0.30s Presolved: 7451 rows, 5039 columns, 27194 nonzeros Variable types: 0 continuous, 5039 integer (5039 binary) Found heuristic solution: objective 71.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 135 iterations, 0.01 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 0.33 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%