Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:59:15 2012 Optimize a model with 32577 rows, 33306 columns and 130128 nonzeros Presolve removed 21 rows and 3460 columns Presolve time: 0.81s Presolved: 32556 rows, 29846 columns, 126312 nonzeros Variable types: 0 continuous, 29846 integer (29846 binary) Found heuristic solution: objective 182.0000000 Root relaxation: objective 2.000000e+00, 20012 iterations, 1.17 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 256 182.00000 2.00000 98.9% - 4s H 0 0 179.0000000 2.00000 98.9% - 4s H 0 0 4.0000000 2.00000 50.0% - 4s H 0 0 3.0000000 2.00000 33.3% - 4s 0 0 infeasible 0 3.00000 2.00000 33.3% - 4s Cutting planes: Gomory: 2 Zero half: 30 Explored 0 nodes (68442 simplex iterations) in 4.55 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%