Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:39:44 2012 Optimize a model with 2685 rows, 6320 columns and 13981 nonzeros Presolve removed 196 rows and 2846 columns Presolve time: 0.11s Presolved: 2489 rows, 3474 columns, 10678 nonzeros Variable types: 0 continuous, 3474 integer (3474 binary) Found heuristic solution: objective 79.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 70 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 (70 simplex iterations) in 0.12 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%