Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:40:15 2012 Optimize a model with 3361 rows, 6806 columns and 16480 nonzeros Presolve removed 166 rows and 2 columns Presolve time: 0.12s Presolved: 3277 rows, 6804 columns, 22716 nonzeros Variable types: 0 continuous, 6804 integer (6804 binary) Found heuristic solution: objective 82.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 112 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 (112 simplex iterations) in 0.13 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%