Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:44:10 2012 Optimize a model with 16028 rows, 18906 columns and 66306 nonzeros Presolve removed 573 rows and 3153 columns Presolve time: 0.33s Presolved: 15455 rows, 15753 columns, 61559 nonzeros Variable types: 0 continuous, 15753 integer (15753 binary) Found heuristic solution: objective 137.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 193 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 (193 simplex iterations) in 0.38 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%