Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:51:20 2012 Optimize a model with 39389 rows, 38220 columns and 155413 nonzeros Presolve removed 414 rows and 4292 columns Presolve time: 0.99s Presolved: 38975 rows, 33928 columns, 149748 nonzeros Variable types: 0 continuous, 33928 integer (33928 binary) Found heuristic solution: objective 195.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 295 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 (295 simplex iterations) in 1.11 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%