Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:55:01 2012 Optimize a model with 3335 rows, 115 columns and 6670 nonzeros Presolve removed 2391 rows and 0 columns Presolve time: 0.10s Presolved: 944 rows, 115 columns, 6580 nonzeros Variable types: 0 continuous, 115 integer (115 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.536567e+01, 470 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 15.36567 0 114 7.00000 15.36567 120% - 0s H 0 0 8.0000000 15.36567 92.1% - 0s 0 0 15.12313 0 115 8.00000 15.12313 89.0% - 0s 0 0 15.04192 0 115 8.00000 15.04192 88.0% - 0s 0 0 15.02208 0 115 8.00000 15.02208 87.8% - 0s 0 0 15.01555 0 115 8.00000 15.01555 87.7% - 0s H 0 0 9.0000000 15.01555 66.8% - 0s 0 0 15.01046 0 115 9.00000 15.01046 66.8% - 0s 0 0 15.00460 0 115 9.00000 15.00460 66.7% - 1s 0 0 14.99595 0 114 9.00000 14.99595 66.6% - 1s 0 0 14.99146 0 115 9.00000 14.99146 66.6% - 1s 0 0 14.99135 0 115 9.00000 14.99135 66.6% - 1s 0 2 14.99117 0 115 9.00000 14.99117 66.6% - 1s H 54 41 10.0000000 14.88022 48.8% 90.0 2s Cutting planes: Clique: 53 Zero half: 2 Explored 172 nodes (16967 simplex iterations) in 2.96 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%