Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:52:07 2012 Optimize a model with 647 rows, 115 columns and 1294 nonzeros Presolve removed 222 rows and 0 columns Presolve time: 0.00s Presolved: 425 rows, 115 columns, 1027 nonzeros Variable types: 0 continuous, 115 integer (115 binary) Found heuristic solution: objective 24.0000000 Root relaxation: objective 4.082278e+01, 263 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 40.82278 0 113 24.00000 40.82278 70.1% - 0s H 0 0 27.0000000 40.82278 51.2% - 0s 0 0 40.39461 0 114 27.00000 40.39461 49.6% - 0s 0 0 40.16708 0 114 27.00000 40.16708 48.8% - 0s H 0 0 28.0000000 40.16708 43.5% - 0s 0 0 39.92818 0 115 28.00000 39.92818 42.6% - 0s H 0 0 29.0000000 39.92818 37.7% - 0s 0 0 39.74900 0 115 29.00000 39.74900 37.1% - 0s 0 0 39.48534 0 115 29.00000 39.48534 36.2% - 0s 0 0 39.41600 0 115 29.00000 39.41600 35.9% - 0s 0 0 39.36855 0 115 29.00000 39.36855 35.8% - 0s 0 0 39.30405 0 115 29.00000 39.30405 35.5% - 0s 0 0 39.25935 0 115 29.00000 39.25935 35.4% - 0s 0 0 39.19086 0 115 29.00000 39.19086 35.1% - 0s 0 0 39.13489 0 115 29.00000 39.13489 34.9% - 0s H 0 0 30.0000000 39.13489 30.4% - 0s 0 0 39.09598 0 114 30.00000 39.09598 30.3% - 0s 0 0 39.05307 0 115 30.00000 39.05307 30.2% - 0s 0 0 38.97413 0 114 30.00000 38.97413 29.9% - 0s H 0 0 31.0000000 38.97413 25.7% - 0s 0 0 38.92478 0 114 31.00000 38.92478 25.6% - 0s 0 0 38.87474 0 114 31.00000 38.87474 25.4% - 0s 0 0 38.85356 0 115 31.00000 38.85356 25.3% - 0s 0 0 38.83513 0 114 31.00000 38.83513 25.3% - 0s 0 0 38.80888 0 115 31.00000 38.80888 25.2% - 0s 0 0 38.80750 0 115 31.00000 38.80750 25.2% - 0s 0 0 38.80750 0 115 31.00000 38.80750 25.2% - 0s 0 2 38.80719 0 115 31.00000 38.80719 25.2% - 0s H 11 11 33.0000000 38.80719 17.6% 45.5 0s Cutting planes: Clique: 4 Zero half: 56 Mod-K: 1 Explored 596 nodes (18629 simplex iterations) in 0.76 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%