Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:37:50 2012 Optimize a model with 1120 rows, 3540 columns and 6606 nonzeros Presolve removed 120 rows and 2 columns Presolve time: 0.10s Presolved: 1059 rows, 3538 columns, 9758 nonzeros Variable types: 0 continuous, 3538 integer (3538 binary) Found heuristic solution: objective 59.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 74 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 (74 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%