Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:54:41 2012 Optimize a model with 3250 rows, 115 columns and 6500 nonzeros Presolve removed 2322 rows and 0 columns Presolve time: 0.10s Presolved: 928 rows, 115 columns, 6322 nonzeros Variable types: 0 continuous, 115 integer (115 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.603792e+01, 467 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.03792 0 110 7.00000 16.03792 129% - 0s H 0 0 8.0000000 16.03792 100% - 0s 0 0 15.53849 0 114 8.00000 15.53849 94.2% - 0s H 0 0 9.0000000 15.53849 72.6% - 0s 0 0 15.46007 0 113 9.00000 15.46007 71.8% - 0s 0 0 15.44495 0 114 9.00000 15.44495 71.6% - 0s 0 0 15.40944 0 113 9.00000 15.40944 71.2% - 0s 0 0 15.39533 0 113 9.00000 15.39533 71.1% - 0s 0 0 15.39475 0 113 9.00000 15.39475 71.1% - 1s 0 0 15.39448 0 113 9.00000 15.39448 71.0% - 1s 0 2 15.39447 0 113 9.00000 15.39447 71.0% - 1s * 439 73 7 10.0000000 12.24400 22.4% 55.5 3s Cutting planes: Clique: 82 Zero half: 1 Explored 515 nodes (27240 simplex iterations) in 3.25 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%