Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:59:08 2012 Optimize a model with 3646 rows, 122 columns and 7292 nonzeros Presolve removed 2566 rows and 0 columns Presolve time: 0.13s Presolved: 1080 rows, 122 columns, 7668 nonzeros Variable types: 0 continuous, 122 integer (122 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.623781e+01, 607 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.23781 0 117 8.00000 16.23781 103% - 0s 0 0 15.78257 0 120 8.00000 15.78257 97.3% - 0s 0 0 15.72134 0 121 8.00000 15.72134 96.5% - 0s H 0 0 9.0000000 15.72134 74.7% - 0s 0 0 15.69073 0 122 9.00000 15.69073 74.3% - 0s 0 0 15.67617 0 122 9.00000 15.67617 74.2% - 0s 0 0 15.66116 0 122 9.00000 15.66116 74.0% - 1s 0 0 15.66082 0 122 9.00000 15.66082 74.0% - 1s 0 0 15.66054 0 122 9.00000 15.66054 74.0% - 1s 0 0 15.66053 0 122 9.00000 15.66053 74.0% - 1s 0 2 15.66033 0 122 9.00000 15.66033 74.0% - 1s 777 78 cutoff 38 9.00000 11.24532 24.9% 55.0 5s Cutting planes: Clique: 101 Explored 867 nodes (47058 simplex iterations) in 5.45 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%