Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:55:04 2012 Optimize a model with 3318 rows, 115 columns and 6636 nonzeros Presolve removed 2405 rows and 0 columns Presolve time: 0.10s Presolved: 913 rows, 115 columns, 6458 nonzeros Variable types: 0 continuous, 115 integer (115 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.539667e+01, 486 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 15.39667 0 111 8.00000 15.39667 92.5% - 0s 0 0 15.06958 0 113 8.00000 15.06958 88.4% - 0s 0 0 15.00917 0 114 8.00000 15.00917 87.6% - 0s 0 0 14.93094 0 114 8.00000 14.93094 86.6% - 0s H 0 0 9.0000000 14.93094 65.9% - 0s 0 0 14.90152 0 115 9.00000 14.90152 65.6% - 0s 0 0 14.89234 0 115 9.00000 14.89234 65.5% - 0s 0 0 14.88358 0 115 9.00000 14.88358 65.4% - 1s 0 0 14.88335 0 115 9.00000 14.88335 65.4% - 1s 0 0 14.88334 0 115 9.00000 14.88334 65.4% - 1s 0 2 14.87755 0 115 9.00000 14.87755 65.3% - 1s Cutting planes: Clique: 83 Explored 442 nodes (25406 simplex iterations) in 3.26 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%