Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:55:18 2012 Optimize a model with 18087 rows, 23256 columns and 76758 nonzeros Presolve removed 306 rows and 2 columns Presolve time: 0.36s Presolved: 17933 rows, 23254 columns, 98868 nonzeros Variable types: 0 continuous, 23254 integer (23254 binary) Found heuristic solution: objective 152.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 236 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 (236 simplex iterations) in 0.43 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%