Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:28:54 2012 Optimize a model with 29583 rows, 29756 columns and 117646 nonzeros Presolve removed 862 rows and 2 columns Presolve time: 0.71s Presolved: 28893 rows, 29754 columns, 144832 nonzeros Variable types: 0 continuous, 29754 integer (29754 binary) Found heuristic solution: objective 172.0000000 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 0.80 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%