Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:11:23 2012 Optimize a model with 8774 rows, 13806 columns and 39544 nonzeros Presolve removed 497 rows and 3161 columns Presolve time: 0.15s Presolved: 8277 rows, 10645 columns, 35073 nonzeros Variable types: 0 continuous, 10645 integer (10645 binary) Found heuristic solution: objective 117.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 144 iterations, 0.00 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 (144 simplex iterations) in 0.17 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%