Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:55:14 2012 Optimize a model with 3302 rows, 116 columns and 6604 nonzeros Presolve removed 2329 rows and 0 columns Presolve time: 0.10s Presolved: 973 rows, 116 columns, 6482 nonzeros Variable types: 0 continuous, 116 integer (116 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.600269e+01, 473 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.00269 0 115 8.00000 16.00269 100% - 0s 0 0 15.52822 0 115 8.00000 15.52822 94.1% - 0s 0 0 15.47231 0 115 8.00000 15.47231 93.4% - 0s 0 0 15.44574 0 115 8.00000 15.44574 93.1% - 0s 0 0 15.42902 0 115 8.00000 15.42902 92.9% - 0s H 0 0 9.0000000 15.42902 71.4% - 0s 0 0 15.42103 0 115 9.00000 15.42103 71.3% - 0s 0 0 15.40785 0 115 9.00000 15.40785 71.2% - 0s 0 0 15.36399 0 115 9.00000 15.36399 70.7% - 1s 0 0 15.35232 0 115 9.00000 15.35232 70.6% - 1s 0 0 15.34541 0 115 9.00000 15.34541 70.5% - 1s 0 0 15.34400 0 115 9.00000 15.34400 70.5% - 1s 0 0 15.34255 0 115 9.00000 15.34255 70.5% - 1s 0 0 15.33300 0 115 9.00000 15.33300 70.4% - 2s 0 0 15.32714 0 115 9.00000 15.32714 70.3% - 2s 0 0 15.32324 0 115 9.00000 15.32324 70.3% - 2s 0 2 15.32299 0 115 9.00000 15.32299 70.3% - 2s Cutting planes: Clique: 102 Explored 596 nodes (32391 simplex iterations) in 4.87 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%