Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:56:21 2012 Optimize a model with 3436 rows, 117 columns and 6872 nonzeros Presolve removed 2400 rows and 0 columns Presolve time: 0.12s Presolved: 1036 rows, 117 columns, 7346 nonzeros Variable types: 0 continuous, 117 integer (117 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.605080e+01, 537 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.05080 0 114 6.00000 16.05080 168% - 0s H 0 0 7.0000000 16.05080 129% - 0s 0 0 15.64506 0 116 7.00000 15.64506 124% - 0s H 0 0 8.0000000 15.64506 95.6% - 0s 0 0 15.60959 0 116 8.00000 15.60959 95.1% - 0s 0 0 15.58799 0 116 8.00000 15.58799 94.8% - 0s 0 0 15.58101 0 116 8.00000 15.58101 94.8% - 0s H 0 0 9.0000000 15.58101 73.1% - 0s 0 0 15.56568 0 116 9.00000 15.56568 73.0% - 0s 0 0 15.55096 0 116 9.00000 15.55096 72.8% - 0s H 0 0 10.0000000 15.55096 55.5% - 0s 0 0 15.55026 0 116 10.00000 15.55026 55.5% - 1s 0 0 15.55000 0 116 10.00000 15.55000 55.5% - 1s 0 2 15.54861 0 116 10.00000 15.54861 55.5% - 1s Cutting planes: Clique: 53 Zero half: 4 Explored 210 nodes (16798 simplex iterations) in 2.83 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%