Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:09:19 2012 Optimize a model with 22004 rows, 26732 columns and 91930 nonzeros Presolve removed 34 rows and 5218 columns Presolve time: 0.49s Presolved: 21970 rows, 21514 columns, 86444 nonzeros Variable types: 0 continuous, 21514 integer (21514 binary) Found heuristic solution: objective 163.0000000 Root relaxation: objective 2.000000e+00, 15133 iterations, 0.91 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 230 163.00000 2.00000 98.8% - 2s H 0 0 136.0000000 2.00000 98.5% - 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: 7 Explored 0 nodes (50804 simplex iterations) in 3.17 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%