Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:59:11 2012 Optimize a model with 32031 rows, 33306 columns and 128490 nonzeros Presolve removed 395 rows and 5280 columns Presolve time: 0.84s Presolved: 31636 rows, 28026 columns, 121954 nonzeros Variable types: 0 continuous, 28026 integer (28026 binary) Found heuristic solution: objective 182.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 262 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 (262 simplex iterations) in 0.93 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%