Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:47:33 2012 Optimize a model with 14767 rows, 20306 columns and 63898 nonzeros Presolve removed 316 rows and 4262 columns Presolve time: 0.30s Presolved: 14451 rows, 16044 columns, 58724 nonzeros Variable types: 0 continuous, 16044 integer (16044 binary) Found heuristic solution: objective 142.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 180 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 (180 simplex iterations) in 0.34 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%