Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:09:30 2012 Optimize a model with 832 rows, 131 columns and 1664 nonzeros Presolve removed 297 rows and 0 columns Presolve time: 0.01s Presolved: 535 rows, 131 columns, 1348 nonzeros Variable types: 0 continuous, 131 integer (131 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 4.554654e+01, 414 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 45.54654 0 131 29.00000 45.54654 57.1% - 0s H 0 0 30.0000000 45.54654 51.8% - 0s 0 0 44.97069 0 129 30.00000 44.97069 49.9% - 0s H 0 0 32.0000000 44.97069 40.5% - 0s H 0 0 33.0000000 44.97069 36.3% - 0s 0 0 44.70851 0 128 33.00000 44.70851 35.5% - 0s 0 0 44.49101 0 129 33.00000 44.49101 34.8% - 0s 0 0 44.11934 0 130 33.00000 44.11934 33.7% - 0s 0 0 43.85921 0 129 33.00000 43.85921 32.9% - 0s H 0 0 35.0000000 43.85921 25.3% - 0s 0 0 43.77186 0 129 35.00000 43.77186 25.1% - 0s 0 0 43.63650 0 130 35.00000 43.63650 24.7% - 0s 0 0 43.61269 0 130 35.00000 43.61269 24.6% - 0s 0 0 43.55997 0 130 35.00000 43.55997 24.5% - 0s 0 0 43.48630 0 129 35.00000 43.48630 24.2% - 0s 0 0 43.44915 0 130 35.00000 43.44915 24.1% - 0s H 0 0 36.0000000 43.44915 20.7% - 0s 0 0 43.44065 0 130 36.00000 43.44065 20.7% - 0s 0 2 43.44033 0 130 36.00000 43.44033 20.7% - 0s 615 125 40.23627 10 116 36.00000 40.23627 11.8% 39.7 5s Cutting planes: Gomory: 4 Clique: 1 Zero half: 41 Explored 2011 nodes (71212 simplex iterations) in 7.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.600000000000e+01, best bound 3.600000000000e+01, gap 0.0%