Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:03:41 2012 Optimize a model with 834 rows, 128 columns and 1668 nonzeros Presolve removed 316 rows and 0 columns Presolve time: 0.01s Presolved: 518 rows, 128 columns, 1331 nonzeros Variable types: 0 continuous, 128 integer (128 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 4.322736e+01, 347 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 43.22736 0 128 27.00000 43.22736 60.1% - 0s H 0 0 30.0000000 43.22736 44.1% - 0s 0 0 42.91519 0 128 30.00000 42.91519 43.1% - 0s 0 0 42.75746 0 127 30.00000 42.75746 42.5% - 0s H 0 0 31.0000000 42.75746 37.9% - 0s 0 0 42.68642 0 127 31.00000 42.68642 37.7% - 0s 0 0 42.61884 0 128 31.00000 42.61884 37.5% - 0s H 0 0 33.0000000 42.61884 29.1% - 0s 0 0 42.55808 0 127 33.00000 42.55808 29.0% - 0s 0 0 42.43462 0 127 33.00000 42.43462 28.6% - 0s 0 0 42.39544 0 128 33.00000 42.39544 28.5% - 0s 0 0 42.33550 0 125 33.00000 42.33550 28.3% - 0s 0 0 42.17884 0 128 33.00000 42.17884 27.8% - 0s 0 0 42.09555 0 126 33.00000 42.09555 27.6% - 0s 0 0 42.05043 0 127 33.00000 42.05043 27.4% - 0s 0 0 42.01192 0 126 33.00000 42.01192 27.3% - 0s 0 0 41.94008 0 127 33.00000 41.94008 27.1% - 0s 0 0 41.89950 0 128 33.00000 41.89950 27.0% - 0s 0 0 41.87025 0 128 33.00000 41.87025 26.9% - 0s 0 0 41.83934 0 128 33.00000 41.83934 26.8% - 0s H 0 0 34.0000000 41.83934 23.1% - 0s 0 0 41.78561 0 127 34.00000 41.78561 22.9% - 0s 0 0 41.76518 0 128 34.00000 41.76518 22.8% - 0s 0 0 41.74210 0 128 34.00000 41.74210 22.8% - 0s 0 0 41.71688 0 128 34.00000 41.71688 22.7% - 0s 0 0 41.69940 0 127 34.00000 41.69940 22.6% - 0s 0 0 41.67357 0 127 34.00000 41.67357 22.6% - 0s 0 0 41.66610 0 128 34.00000 41.66610 22.5% - 0s 0 0 41.66610 0 128 34.00000 41.66610 22.5% - 0s 0 2 41.66587 0 128 34.00000 41.66587 22.5% - 0s 610 178 35.34375 9 128 34.00000 38.86538 14.3% 35.5 5s 1545 277 36.00000 25 86 34.00000 37.77778 11.1% 37.4 10s Cutting planes: Gomory: 5 Clique: 3 Zero half: 37 Mod-K: 2 Explored 2750 nodes (89745 simplex iterations) in 11.99 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%