Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:46:26 2012 Optimize a model with 2110 rows, 93 columns and 4220 nonzeros Presolve removed 1501 rows and 0 columns Presolve time: 0.06s Presolved: 609 rows, 93 columns, 4077 nonzeros Variable types: 0 continuous, 93 integer (93 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.383272e+01, 285 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13.83272 0 90 8.00000 13.83272 72.9% - 0s H 0 0 9.0000000 13.83272 53.7% - 0s 0 0 13.53784 0 90 9.00000 13.53784 50.4% - 0s 0 0 13.43115 0 90 9.00000 13.43115 49.2% - 0s 0 0 13.38324 0 92 9.00000 13.38324 48.7% - 0s 0 0 13.36009 0 92 9.00000 13.36009 48.4% - 0s 0 0 13.35552 0 92 9.00000 13.35552 48.4% - 0s 0 0 13.34239 0 92 9.00000 13.34239 48.2% - 0s 0 0 13.33333 0 92 9.00000 13.33333 48.1% - 0s 0 0 13.32895 0 92 9.00000 13.32895 48.1% - 0s 0 0 13.32524 0 92 9.00000 13.32524 48.1% - 0s 0 0 13.32491 0 92 9.00000 13.32491 48.1% - 0s 0 0 13.32086 0 92 9.00000 13.32086 48.0% - 0s 0 0 13.32044 0 92 9.00000 13.32044 48.0% - 0s 0 2 13.31261 0 92 9.00000 13.31261 47.9% - 1s * 33 17 6 10.0000000 13.09110 30.9% 63.4 1s Cutting planes: Clique: 52 Zero half: 4 Explored 64 nodes (4658 simplex iterations) in 1.33 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%