Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:52:16 2012 Optimize a model with 2988 rows, 110 columns and 5976 nonzeros Presolve removed 2138 rows and 0 columns Presolve time: 0.09s Presolved: 850 rows, 110 columns, 5731 nonzeros Variable types: 0 continuous, 110 integer (110 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.534660e+01, 435 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 15.34660 0 107 7.00000 15.34660 119% - 0s H 0 0 8.0000000 15.34660 91.8% - 0s 0 0 14.97577 0 107 8.00000 14.97577 87.2% - 0s 0 0 14.80314 0 109 8.00000 14.80314 85.0% - 0s 0 0 14.76213 0 109 8.00000 14.76213 84.5% - 0s 0 0 14.73328 0 110 8.00000 14.73328 84.2% - 0s 0 0 14.71861 0 109 8.00000 14.71861 84.0% - 0s 0 0 14.69401 0 110 8.00000 14.69401 83.7% - 1s 0 0 14.68424 0 110 8.00000 14.68424 83.6% - 1s 0 0 14.67989 0 110 8.00000 14.67989 83.5% - 1s 0 0 14.67899 0 110 8.00000 14.67899 83.5% - 1s 0 2 14.67730 0 110 8.00000 14.67730 83.5% - 1s H 164 83 9.0000000 13.93511 54.8% 58.5 2s Cutting planes: Clique: 99 Explored 406 nodes (22565 simplex iterations) in 3.12 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%