Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:08:34 2012 Optimize a model with 847 rows, 130 columns and 1694 nonzeros Presolve removed 314 rows and 0 columns Presolve time: 0.01s Presolved: 533 rows, 130 columns, 1361 nonzeros Variable types: 0 continuous, 130 integer (130 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 4.441047e+01, 362 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 44.41047 0 130 26.00000 44.41047 70.8% - 0s 0 0 43.91113 0 130 26.00000 43.91113 68.9% - 0s H 0 0 28.0000000 43.91113 56.8% - 0s 0 0 43.66214 0 130 28.00000 43.66214 55.9% - 0s 0 0 43.45776 0 130 28.00000 43.45776 55.2% - 0s 0 0 43.37544 0 130 28.00000 43.37544 54.9% - 0s 0 0 43.15488 0 130 28.00000 43.15488 54.1% - 0s 0 0 42.93799 0 130 28.00000 42.93799 53.3% - 0s H 0 0 29.0000000 42.93799 48.1% - 0s 0 0 42.78661 0 130 29.00000 42.78661 47.5% - 0s 0 0 42.70292 0 129 29.00000 42.70292 47.3% - 0s 0 0 42.59814 0 130 29.00000 42.59814 46.9% - 0s 0 0 42.53634 0 130 29.00000 42.53634 46.7% - 0s 0 0 42.50606 0 130 29.00000 42.50606 46.6% - 0s 0 0 42.48876 0 130 29.00000 42.48876 46.5% - 0s 0 0 42.38091 0 129 29.00000 42.38091 46.1% - 0s H 0 0 31.0000000 42.38091 36.7% - 0s 0 0 42.32638 0 130 31.00000 42.32638 36.5% - 0s 0 0 42.27507 0 129 31.00000 42.27507 36.4% - 0s 0 0 42.17180 0 130 31.00000 42.17180 36.0% - 0s 0 0 42.15862 0 130 31.00000 42.15862 36.0% - 0s 0 0 42.15862 0 130 31.00000 42.15862 36.0% - 0s 0 2 42.15808 0 130 31.00000 42.15808 36.0% - 0s * 21 18 16 32.0000000 42.15808 31.7% 45.4 0s H 81 46 33.0000000 41.36735 25.4% 45.7 0s * 213 82 11 34.0000000 40.22203 18.3% 43.2 0s 613 216 37.06948 8 130 34.00000 38.84263 14.2% 38.1 5s 1675 395 cutoff 17 34.00000 37.83453 11.3% 38.7 10s Cutting planes: Gomory: 2 Clique: 3 Zero half: 58 Explored 3657 nodes (115911 simplex iterations) in 12.59 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%