Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:09:02 2012 Optimize a model with 24286 rows, 26732 columns and 98776 nonzeros Presolve removed 25 rows and 3751 columns Presolve time: 0.52s Presolved: 24261 rows, 22981 columns, 94729 nonzeros Variable types: 0 continuous, 22981 integer (22981 binary) Found heuristic solution: objective 163.0000000 Root relaxation: objective 2.000000e+00, 14981 iterations, 0.75 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 232 163.00000 2.00000 98.8% - 2s H 0 0 123.0000000 2.00000 98.4% - 2s H 0 0 4.0000000 2.00000 50.0% - 2s 0 0 2.14379 0 2243 4.00000 2.14379 46.4% - 7s H 0 0 3.0000000 2.14379 28.5% - 8s Cutting planes: Gomory: 1 Zero half: 6 Explored 0 nodes (61747 simplex iterations) in 8.13 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%