Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:15:07 2012 Optimize a model with 3416 rows, 2652 columns and 12646 nonzeros Presolve removed 211 rows and 257 columns Presolve time: 0.10s Presolved: 3205 rows, 2395 columns, 11806 nonzeros Variable types: 0 continuous, 2395 integer (2395 binary) Found heuristic solution: objective 51.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 85 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 (85 simplex iterations) in 0.11 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%