Gurobi 5.0.1 (linux64) logging started Tue Nov 20 07:11:11 2012 Optimize a model with 1068 rows, 150 columns and 2136 nonzeros Presolve removed 410 rows and 0 columns Presolve time: 0.01s Presolved: 658 rows, 150 columns, 1723 nonzeros Variable types: 0 continuous, 150 integer (150 binary) Found heuristic solution: objective 36.0000000 Root relaxation: objective 4.944616e+01, 432 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 49.44616 0 150 36.00000 49.44616 37.4% - 0s 0 0 49.21477 0 149 36.00000 49.21477 36.7% - 0s 0 0 48.81597 0 148 36.00000 48.81597 35.6% - 0s 0 0 48.60879 0 149 36.00000 48.60879 35.0% - 0s 0 0 48.48805 0 150 36.00000 48.48805 34.7% - 0s 0 0 48.40286 0 149 36.00000 48.40286 34.5% - 0s 0 0 48.37512 0 149 36.00000 48.37512 34.4% - 0s 0 0 48.25782 0 150 36.00000 48.25782 34.0% - 0s 0 0 48.23199 0 150 36.00000 48.23199 34.0% - 0s H 0 0 38.0000000 48.23199 26.9% - 0s 0 0 48.18653 0 150 38.00000 48.18653 26.8% - 0s 0 0 48.09006 0 150 38.00000 48.09006 26.6% - 0s 0 0 48.05395 0 150 38.00000 48.05395 26.5% - 0s 0 0 48.01337 0 149 38.00000 48.01337 26.4% - 0s H 0 0 39.0000000 48.01337 23.1% - 0s 0 0 48.00827 0 149 39.00000 48.00827 23.1% - 0s 0 0 47.97900 0 149 39.00000 47.97900 23.0% - 0s 0 0 47.90474 0 150 39.00000 47.90474 22.8% - 0s 0 0 47.84476 0 149 39.00000 47.84476 22.7% - 0s 0 0 47.80288 0 148 39.00000 47.80288 22.6% - 0s 0 0 47.78713 0 150 39.00000 47.78713 22.5% - 0s 0 0 47.76473 0 149 39.00000 47.76473 22.5% - 0s 0 0 47.74326 0 149 39.00000 47.74326 22.4% - 0s 0 0 47.72622 0 147 39.00000 47.72622 22.4% - 0s 0 0 47.70506 0 147 39.00000 47.70506 22.3% - 0s 0 0 47.69955 0 148 39.00000 47.69955 22.3% - 0s 0 0 47.68988 0 148 39.00000 47.68988 22.3% - 0s 0 0 47.68988 0 148 39.00000 47.68988 22.3% - 0s 0 2 47.68941 0 148 39.00000 47.68941 22.3% - 0s H 590 148 40.0000000 44.80136 12.0% 49.1 1s 708 184 42.72385 6 149 40.00000 44.49725 11.2% 48.9 5s 861 233 43.33026 16 125 40.00000 44.49725 11.2% 57.6 10s Cutting planes: Gomory: 1 Clique: 1 Zero half: 59 Explored 2042 nodes (98763 simplex iterations) in 12.90 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+01, best bound 4.000000000000e+01, gap 0.0%