Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:55:25 2012 Optimize a model with 3330 rows, 116 columns and 6660 nonzeros Presolve removed 2374 rows and 0 columns Presolve time: 0.12s Presolved: 956 rows, 116 columns, 6694 nonzeros Variable types: 0 continuous, 116 integer (116 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.579311e+01, 543 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 15.79311 0 113 8.00000 15.79311 97.4% - 0s 0 0 15.48924 0 116 8.00000 15.48924 93.6% - 0s H 0 0 9.0000000 15.48924 72.1% - 0s 0 0 15.43815 0 116 9.00000 15.43815 71.5% - 0s 0 0 15.41200 0 116 9.00000 15.41200 71.2% - 0s 0 0 15.37619 0 115 9.00000 15.37619 70.8% - 0s 0 0 15.35099 0 116 9.00000 15.35099 70.6% - 0s 0 0 15.33391 0 116 9.00000 15.33391 70.4% - 0s 0 0 15.32716 0 115 9.00000 15.32716 70.3% - 0s 0 0 15.32413 0 116 9.00000 15.32413 70.3% - 1s 0 0 15.32411 0 116 9.00000 15.32411 70.3% - 1s 0 2 15.32223 0 116 9.00000 15.32223 70.2% - 1s * 317 71 9 10.0000000 12.55995 25.6% 61.0 3s Cutting planes: Clique: 58 Zero half: 4 Explored 405 nodes (22995 simplex iterations) in 3.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%