Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:03:09 2012 Optimize a model with 786 rows, 127 columns and 1572 nonzeros Presolve removed 290 rows and 0 columns Presolve time: 0.01s Presolved: 496 rows, 127 columns, 1251 nonzeros Variable types: 0 continuous, 127 integer (127 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 4.373817e+01, 361 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 43.73817 0 127 30.00000 43.73817 45.8% - 0s H 0 0 33.0000000 43.73817 32.5% - 0s 0 0 43.30156 0 125 33.00000 43.30156 31.2% - 0s 0 0 43.02259 0 126 33.00000 43.02259 30.4% - 0s 0 0 42.81737 0 127 33.00000 42.81737 29.7% - 0s 0 0 42.65674 0 126 33.00000 42.65674 29.3% - 0s 0 0 42.53886 0 126 33.00000 42.53886 28.9% - 0s 0 0 42.40562 0 127 33.00000 42.40562 28.5% - 0s 0 0 42.30139 0 125 33.00000 42.30139 28.2% - 0s 0 0 42.20969 0 124 33.00000 42.20969 27.9% - 0s 0 0 42.16220 0 125 33.00000 42.16220 27.8% - 0s 0 0 42.09005 0 126 33.00000 42.09005 27.5% - 0s 0 0 42.01128 0 124 33.00000 42.01128 27.3% - 0s 0 0 41.98390 0 126 33.00000 41.98390 27.2% - 0s 0 0 41.92575 0 126 33.00000 41.92575 27.0% - 0s 0 0 41.90646 0 126 33.00000 41.90646 27.0% - 0s 0 0 41.90076 0 126 33.00000 41.90076 27.0% - 0s 0 0 41.90076 0 126 33.00000 41.90076 27.0% - 0s 0 2 41.90023 0 126 33.00000 41.90023 27.0% - 0s 611 242 37.82812 7 125 33.00000 39.09874 18.5% 29.4 5s * 867 300 28 34.0000000 39.09874 15.0% 35.7 6s 4404 79 35.00000 31 60 34.00000 35.50000 4.41% 24.7 10s Cutting planes: Gomory: 6 Clique: 2 Zero half: 36 Explored 4510 nodes (111067 simplex iterations) in 10.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.400000000000e+01, best bound 3.400000000000e+01, gap 0.0%