Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:48:10 2012 Optimize a model with 29176 rows, 32220 columns and 118854 nonzeros Presolve removed 392 rows and 5730 columns Presolve time: 0.69s Presolved: 28784 rows, 26490 columns, 111909 nonzeros Variable types: 0 continuous, 26490 integer (26490 binary) Found heuristic solution: objective 179.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 270 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 (270 simplex iterations) in 0.78 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%