Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:52:28 2012 Optimize a model with 3028 rows, 110 columns and 6056 nonzeros Presolve removed 2174 rows and 0 columns Presolve time: 0.10s Presolved: 854 rows, 110 columns, 6033 nonzeros Variable types: 0 continuous, 110 integer (110 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.521971e+01, 455 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 15.21971 0 105 7.00000 15.21971 117% - 0s H 0 0 8.0000000 15.21971 90.2% - 0s 0 0 14.75727 0 108 8.00000 14.75727 84.5% - 0s 0 0 14.70578 0 107 8.00000 14.70578 83.8% - 0s H 0 0 9.0000000 14.70578 63.4% - 0s 0 0 14.63947 0 109 9.00000 14.63947 62.7% - 0s 0 0 14.62632 0 109 9.00000 14.62632 62.5% - 0s 0 0 14.62101 0 109 9.00000 14.62101 62.5% - 0s 0 0 14.61486 0 108 9.00000 14.61486 62.4% - 0s 0 0 14.61151 0 108 9.00000 14.61151 62.4% - 1s 0 0 14.61081 0 108 9.00000 14.61081 62.3% - 1s 0 0 14.61063 0 108 9.00000 14.61063 62.3% - 1s 0 0 14.61058 0 108 9.00000 14.61058 62.3% - 1s 0 2 14.60847 0 108 9.00000 14.60847 62.3% - 1s Cutting planes: Clique: 90 Zero half: 1 Explored 336 nodes (19665 simplex iterations) in 2.91 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%