Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:01:52 2012 Optimize a model with 34220 rows, 33672 columns and 135418 nonzeros Presolve removed 393 rows and 4577 columns Presolve time: 0.80s Presolved: 33827 rows, 29095 columns, 129558 nonzeros Variable types: 0 continuous, 29095 integer (29095 binary) Found heuristic solution: objective 183.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 268 iterations, 0.02 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 (268 simplex iterations) in 0.90 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%