Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:13:10 2012 Optimize a model with 3311 rows, 2162 columns and 11866 nonzeros Presolve removed 281 rows and 140 columns Presolve time: 0.10s Presolved: 3030 rows, 2022 columns, 10906 nonzeros Variable types: 0 continuous, 2022 integer (2022 binary) Found heuristic solution: objective 46.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 71 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 (71 simplex iterations) in 0.10 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%