Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:09:59 2012 Optimize a model with 9279 rows, 13572 columns and 40830 nonzeros Presolve removed 255 rows and 2438 columns Presolve time: 0.17s Presolved: 9024 rows, 11134 columns, 37658 nonzeros Variable types: 0 continuous, 11134 integer (11134 binary) Found heuristic solution: objective 116.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 157 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 (157 simplex iterations) in 0.19 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%