Gurobi 5.0.1 (linux64) logging started Mon Feb 4 17:34:28 2013 Optimize a model with 6579 rows, 1156 columns and 20230 nonzeros Presolve removed 1107 rows and 598 columns Presolve time: 0.05s Presolved: 5472 rows, 558 columns, 16880 nonzeros Variable types: 15 continuous, 543 integer (543 binary) Found heuristic solution: objective 22105.000000 Root relaxation: objective 1.641657e+04, 2349 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16416.5652 0 11 22105.0000 16416.5652 25.7% - 0s H 0 0 16444.000000 16416.5652 0.17% - 0s H 0 0 16429.000000 16416.5652 0.08% - 0s 0 0 16416.5652 0 12 16429.0000 16416.5652 0.08% - 0s 0 0 16416.5652 0 10 16429.0000 16416.5652 0.08% - 0s 0 0 16416.5652 0 11 16429.0000 16416.5652 0.08% - 0s H 0 0 16424.000000 16416.5652 0.05% - 0s 0 2 16416.5652 0 10 16424.0000 16416.5652 0.05% - 0s * 293 79 22 16423.000000 16419.7299 0.02% 9.9 0s Cutting planes: Gomory: 7 Cover: 2 Implied bound: 4 MIR: 39 Zero half: 9 Explored 577 nodes (8056 simplex iterations) in 0.47 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.642300000000e+04, best bound 1.642200000000e+04, gap 0.0061%