Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:54:07 2012 Optimize a model with 17666 rows, 22952 columns and 75196 nonzeros Presolve removed 336 rows and 4834 columns Presolve time: 0.37s Presolved: 17330 rows, 18118 columns, 69379 nonzeros Variable types: 0 continuous, 18118 integer (18118 binary) Found heuristic solution: objective 151.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 207 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 (207 simplex iterations) in 0.43 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%