Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:30:05 2012 Optimize a model with 27691 rows, 29756 columns and 111970 nonzeros Presolve removed 346 rows and 2 columns Presolve time: 0.63s Presolved: 27517 rows, 29754 columns, 140376 nonzeros Variable types: 0 continuous, 29754 integer (29754 binary) Found heuristic solution: objective 172.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 276 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% - 0s Explored 0 nodes (276 simplex iterations) in 0.72 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%