Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:42:36 2012 Optimize a model with 9071 rows, 5256 columns and 32110 nonzeros Presolve removed 867 rows and 74 columns Presolve time: 0.35s Presolved: 8204 rows, 5182 columns, 29650 nonzeros Variable types: 0 continuous, 5182 integer (5182 binary) Found heuristic solution: objective 72.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 128 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 (128 simplex iterations) in 0.37 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%