Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:22:39 2012 Optimize a model with 25499 rows, 29070 columns and 104718 nonzeros Presolve removed 28 rows and 4422 columns Presolve time: 0.55s Presolved: 25471 rows, 24648 columns, 99998 nonzeros Variable types: 0 continuous, 24648 integer (24648 binary) Found heuristic solution: objective 170.0000000 Root relaxation: objective 2.000000e+00, 18289 iterations, 1.16 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 266 170.00000 2.00000 98.8% - 3s H 0 0 149.0000000 2.00000 98.7% - 3s H 0 0 4.0000000 2.00000 50.0% - 3s H 0 0 3.0000000 2.00000 33.3% - 3s 0 0 infeasible 0 3.00000 2.00000 33.3% - 3s Cutting planes: Gomory: 1 Zero half: 6 Explored 0 nodes (57991 simplex iterations) in 3.88 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%