Gurobi 5.0.1 (linux64) logging started Tue Nov 20 07:05:16 2012 Optimize a model with 1081 rows, 149 columns and 2162 nonzeros Presolve removed 436 rows and 0 columns Presolve time: 0.01s Presolved: 645 rows, 149 columns, 1702 nonzeros Variable types: 0 continuous, 149 integer (149 binary) Found heuristic solution: objective 33.0000000 Root relaxation: objective 4.866493e+01, 454 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 48.66493 0 149 33.00000 48.66493 47.5% - 0s H 0 0 35.0000000 48.66493 39.0% - 0s 0 0 48.19531 0 148 35.00000 48.19531 37.7% - 0s 0 0 48.03699 0 149 35.00000 48.03699 37.2% - 0s 0 0 47.85585 0 148 35.00000 47.85585 36.7% - 0s 0 0 47.71791 0 149 35.00000 47.71791 36.3% - 0s 0 0 47.49896 0 149 35.00000 47.49896 35.7% - 0s 0 0 47.34427 0 149 35.00000 47.34427 35.3% - 0s 0 0 47.13977 0 148 35.00000 47.13977 34.7% - 0s 0 0 47.03121 0 149 35.00000 47.03121 34.4% - 0s 0 0 46.94164 0 149 35.00000 46.94164 34.1% - 0s 0 0 46.81959 0 148 35.00000 46.81959 33.8% - 0s 0 0 46.74042 0 147 35.00000 46.74042 33.5% - 0s 0 0 46.64357 0 149 35.00000 46.64357 33.3% - 0s 0 0 46.62826 0 149 35.00000 46.62826 33.2% - 0s 0 0 46.62826 0 149 35.00000 46.62826 33.2% - 0s 0 2 46.62788 0 149 35.00000 46.62788 33.2% - 0s * 43 21 12 36.0000000 46.36628 28.8% 47.6 0s H 195 51 38.0000000 44.73823 17.7% 54.0 0s 609 159 42.99342 8 149 38.00000 43.22475 13.7% 51.1 5s 2033 356 39.80392 13 99 38.00000 41.21739 8.47% 49.7 10s Cutting planes: Gomory: 5 Clique: 2 Zero half: 37 Mod-K: 1 Explored 2971 nodes (135129 simplex iterations) in 12.46 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.800000000000e+01, best bound 3.800000000000e+01, gap 0.0%