Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:08:23 2012 Optimize a model with 824 rows, 130 columns and 1648 nonzeros Presolve removed 305 rows and 0 columns Presolve time: 0.01s Presolved: 519 rows, 130 columns, 1313 nonzeros Variable types: 0 continuous, 130 integer (130 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 4.376864e+01, 340 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 43.76864 0 126 29.00000 43.76864 50.9% - 0s H 0 0 30.0000000 43.76864 45.9% - 0s H 0 0 32.0000000 43.76864 36.8% - 0s 0 0 43.43999 0 127 32.00000 43.43999 35.7% - 0s H 0 0 33.0000000 43.43999 31.6% - 0s 0 0 43.26700 0 127 33.00000 43.26700 31.1% - 0s 0 0 43.08555 0 127 33.00000 43.08555 30.6% - 0s 0 0 42.94586 0 128 33.00000 42.94586 30.1% - 0s 0 0 42.83584 0 128 33.00000 42.83584 29.8% - 0s 0 0 42.67901 0 127 33.00000 42.67901 29.3% - 0s 0 0 42.60436 0 128 33.00000 42.60436 29.1% - 0s 0 0 42.57133 0 128 33.00000 42.57133 29.0% - 0s 0 0 42.47724 0 129 33.00000 42.47724 28.7% - 0s 0 0 42.44140 0 129 33.00000 42.44140 28.6% - 0s 0 0 42.36165 0 128 33.00000 42.36165 28.4% - 0s 0 0 42.21888 0 129 33.00000 42.21888 27.9% - 0s 0 0 42.20613 0 129 33.00000 42.20613 27.9% - 0s 0 0 42.14389 0 129 33.00000 42.14389 27.7% - 0s 0 0 42.10538 0 129 33.00000 42.10538 27.6% - 0s 0 0 42.09083 0 129 33.00000 42.09083 27.5% - 0s H 0 0 34.0000000 42.09083 23.8% - 0s 0 0 42.05838 0 129 34.00000 42.05838 23.7% - 0s 0 0 42.04532 0 129 34.00000 42.04532 23.7% - 0s 0 0 42.04368 0 128 34.00000 42.04368 23.7% - 0s 0 0 42.04154 0 129 34.00000 42.04154 23.7% - 0s 0 0 42.04154 0 129 34.00000 42.04154 23.7% - 0s 0 2 42.03848 0 129 34.00000 42.03848 23.6% - 0s H 28 8 35.0000000 42.03785 20.1% 38.5 0s 613 154 38.27778 6 126 35.00000 39.02778 11.5% 36.6 5s 1462 206 cutoff 20 35.00000 37.86275 8.18% 39.5 10s Cutting planes: Gomory: 1 Clique: 3 Zero half: 49 Explored 2153 nodes (73447 simplex iterations) in 10.94 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.500000000000e+01, best bound 3.500000000000e+01, gap 0.0%