Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:46:06 2012 Optimize a model with 2035 rows, 91 columns and 4070 nonzeros Presolve removed 1415 rows and 0 columns Presolve time: 0.06s Presolved: 620 rows, 91 columns, 4118 nonzeros Variable types: 0 continuous, 91 integer (91 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.357605e+01, 378 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13.57605 0 84 8.00000 13.57605 69.7% - 0s 0 0 13.06871 0 89 8.00000 13.06871 63.4% - 0s 0 0 13.00693 0 88 8.00000 13.00693 62.6% - 0s 0 0 12.99549 0 88 8.00000 12.99549 62.4% - 0s 0 0 12.99132 0 88 8.00000 12.99132 62.4% - 0s 0 0 12.98765 0 88 8.00000 12.98765 62.3% - 0s 0 0 12.98557 0 88 8.00000 12.98557 62.3% - 0s 0 0 12.98555 0 89 8.00000 12.98555 62.3% - 0s 0 0 12.98555 0 89 8.00000 12.98555 62.3% - 0s 0 2 12.98537 0 89 8.00000 12.98537 62.3% - 0s * 122 29 10 9.0000000 12.01569 33.5% 45.2 0s Cutting planes: Clique: 58 Zero half: 3 Explored 162 nodes (8076 simplex iterations) in 0.96 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%