Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:50:58 2012 Optimize a model with 38804 rows, 38220 columns and 153658 nonzeros Presolve removed 417 rows and 4877 columns Presolve time: 0.99s Presolved: 38387 rows, 33343 columns, 147414 nonzeros Variable types: 0 continuous, 33343 integer (33343 binary) Found heuristic solution: objective 195.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 294 iterations, 0.02 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% - 1s Explored 0 nodes (294 simplex iterations) in 1.10 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%