Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:59:33 2012 Optimize a model with 3700 rows, 122 columns and 7400 nonzeros Presolve removed 2660 rows and 0 columns Presolve time: 0.13s Presolved: 1040 rows, 122 columns, 7225 nonzeros Variable types: 0 continuous, 122 integer (122 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.622005e+01, 533 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.22005 0 117 7.00000 16.22005 132% - 0s H 0 0 8.0000000 16.22005 103% - 0s 0 0 15.86983 0 121 8.00000 15.86983 98.4% - 0s 0 0 15.79903 0 121 8.00000 15.79903 97.5% - 0s 0 0 15.78367 0 121 8.00000 15.78367 97.3% - 0s 0 0 15.77002 0 122 8.00000 15.77002 97.1% - 0s 0 0 15.75693 0 122 8.00000 15.75693 97.0% - 1s 0 0 15.75413 0 122 8.00000 15.75413 96.9% - 1s 0 0 15.75412 0 122 8.00000 15.75412 96.9% - 1s 0 0 15.75411 0 122 8.00000 15.75411 96.9% - 1s 0 0 15.75409 0 122 8.00000 15.75409 96.9% - 1s 0 2 15.75191 0 122 8.00000 15.75191 96.9% - 2s * 235 132 13 9.0000000 14.62243 62.5% 64.1 3s 732 107 10.06349 11 32 9.00000 11.22365 24.7% 57.6 5s * 846 0 10 10.0000000 10.00000 0.0% 53.9 5s Cutting planes: Clique: 89 Explored 847 nodes (46520 simplex iterations) in 5.43 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%