Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:14:51 2012 Optimize a model with 3749 rows, 2550 columns and 13548 nonzeros Presolve removed 202 rows and 2 columns Presolve time: 0.09s Presolved: 3597 rows, 2548 columns, 15406 nonzeros Variable types: 0 continuous, 2548 integer (2548 binary) Found heuristic solution: objective 50.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 89 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 (89 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%