Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:13:11 2012 Optimize a model with 33659 rows, 35156 columns and 135199 nonzeros Presolve removed 29 rows and 5051 columns Presolve time: 0.71s Presolved: 33630 rows, 30105 columns, 129790 nonzeros Variable types: 0 continuous, 30105 integer (30105 binary) Found heuristic solution: objective 187.0000000 Root relaxation: objective 2.000000e+00, 21715 iterations, 1.62 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 278 187.00000 2.00000 98.9% - 5s H 0 0 160.0000000 2.00000 98.8% - 5s H 0 0 4.0000000 2.00000 50.0% - 5s H 0 0 3.0000000 2.00000 33.3% - 5s 0 0 infeasible 0 3.00000 2.00000 33.3% - 5s Cutting planes: Gomory: 1 Zero half: 27 Explored 0 nodes (72012 simplex iterations) in 5.50 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%