Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:00:17 2012 Optimize a model with 3753 rows, 123 columns and 7506 nonzeros Presolve removed 2680 rows and 0 columns Presolve time: 0.12s Presolved: 1073 rows, 123 columns, 7407 nonzeros Variable types: 0 continuous, 123 integer (123 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.622014e+01, 536 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.22014 0 122 6.00000 16.22014 170% - 0s H 0 0 7.0000000 16.22014 132% - 0s 0 0 15.87760 0 123 7.00000 15.87760 127% - 0s 0 0 15.79568 0 123 7.00000 15.79568 126% - 0s H 0 0 8.0000000 15.79568 97.4% - 0s 0 0 15.75427 0 123 8.00000 15.75427 96.9% - 0s 0 0 15.72942 0 123 8.00000 15.72942 96.6% - 0s 0 0 15.72021 0 123 8.00000 15.72021 96.5% - 0s 0 0 15.71435 0 123 8.00000 15.71435 96.4% - 1s 0 0 15.70065 0 123 8.00000 15.70065 96.3% - 1s 0 0 15.69925 0 123 8.00000 15.69925 96.2% - 1s 0 0 15.69897 0 123 8.00000 15.69897 96.2% - 1s 0 0 15.69807 0 123 8.00000 15.69807 96.2% - 1s 0 0 15.69791 0 123 8.00000 15.69791 96.2% - 1s 0 2 15.69531 0 123 8.00000 15.69531 96.2% - 2s H 190 118 9.0000000 14.81427 64.6% 65.3 3s * 641 68 10 10.0000000 11.88441 18.8% 56.5 4s Cutting planes: Clique: 84 Zero half: 1 Explored 710 nodes (38508 simplex iterations) in 4.95 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%