Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:57:46 2012 Optimize a model with 3523 rows, 120 columns and 7046 nonzeros Presolve removed 2529 rows and 0 columns Presolve time: 0.12s Presolved: 994 rows, 120 columns, 6829 nonzeros Variable types: 0 continuous, 120 integer (120 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.632952e+01, 523 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.32952 0 117 6.00000 16.32952 172% - 0s H 0 0 8.0000000 16.32952 104% - 0s 0 0 15.91464 0 117 8.00000 15.91464 98.9% - 0s 0 0 15.73924 0 119 8.00000 15.73924 96.7% - 0s H 0 0 9.0000000 15.73924 74.9% - 0s 0 0 15.71234 0 119 9.00000 15.71234 74.6% - 0s 0 0 15.70777 0 119 9.00000 15.70777 74.5% - 0s H 0 0 10.0000000 15.70777 57.1% - 0s 0 0 15.69726 0 120 10.00000 15.69726 57.0% - 0s 0 0 15.66148 0 120 10.00000 15.66148 56.6% - 1s 0 0 15.65893 0 120 10.00000 15.65893 56.6% - 1s 0 0 15.65530 0 120 10.00000 15.65530 56.6% - 1s 0 0 15.65506 0 120 10.00000 15.65506 56.6% - 1s 0 2 15.65504 0 120 10.00000 15.65504 56.6% - 2s Cutting planes: Clique: 96 Explored 333 nodes (25259 simplex iterations) in 3.62 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%