Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:18:46 2012 Optimize a model with 6479 rows, 3660 columns and 22798 nonzeros Presolve removed 662 rows and 2 columns Presolve time: 0.18s Presolved: 5817 rows, 3658 columns, 20984 nonzeros Variable types: 0 continuous, 3658 integer (3658 binary) Found heuristic solution: objective 60.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 108 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 (108 simplex iterations) in 0.20 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%