Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:30:12 2012 Optimize a model with 26659 rows, 29756 columns and 108874 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.58s Presolved: 26829 rows, 29754 columns, 138148 nonzeros Variable types: 0 continuous, 29754 integer (29754 binary) Found heuristic solution: objective 172.0000000 Root relaxation: objective 2.000000e+00, 17580 iterations, 1.25 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 246 172.00000 2.00000 98.8% - 3s H 0 0 138.0000000 2.00000 98.6% - 3s H 0 0 4.0000000 2.00000 50.0% - 3s 0 0 2.15385 0 742 4.00000 2.15385 46.2% - 9s H 0 0 3.0000000 2.15385 28.2% - 9s Cutting planes: Gomory: 1 Zero half: 11 Explored 0 nodes (67794 simplex iterations) in 9.89 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%