Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:09:11 2012 Optimize a model with 22167 rows, 26732 columns and 92419 nonzeros Presolve removed 358 rows and 4892 columns Presolve time: 0.52s Presolved: 21809 rows, 21840 columns, 86446 nonzeros Variable types: 0 continuous, 21840 integer (21840 binary) Found heuristic solution: objective 163.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 220 iterations, 0.01 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 (220 simplex iterations) in 0.58 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%