Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:13:22 2012 Optimize a model with 845 rows, 133 columns and 1690 nonzeros Presolve removed 337 rows and 0 columns Presolve time: 0.01s Presolved: 508 rows, 133 columns, 1319 nonzeros Variable types: 0 continuous, 133 integer (133 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 4.428091e+01, 343 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 44.28091 0 133 30.00000 44.28091 47.6% - 0s H 0 0 31.0000000 44.28091 42.8% - 0s 0 0 43.86775 0 133 31.00000 43.86775 41.5% - 0s H 0 0 32.0000000 43.86775 37.1% - 0s 0 0 43.81980 0 133 32.00000 43.81980 36.9% - 0s 0 0 43.74760 0 133 32.00000 43.74760 36.7% - 0s 0 0 43.57254 0 133 32.00000 43.57254 36.2% - 0s 0 0 43.45513 0 133 32.00000 43.45513 35.8% - 0s 0 0 43.31014 0 132 32.00000 43.31014 35.3% - 0s 0 0 43.19263 0 133 32.00000 43.19263 35.0% - 0s 0 0 43.14302 0 133 32.00000 43.14302 34.8% - 0s 0 0 43.05232 0 133 32.00000 43.05232 34.5% - 0s H 0 0 33.0000000 43.05232 30.5% - 0s 0 0 42.97626 0 132 33.00000 42.97626 30.2% - 0s 0 0 42.87714 0 132 33.00000 42.87714 29.9% - 0s 0 0 42.80470 0 132 33.00000 42.80470 29.7% - 0s 0 0 42.70526 0 133 33.00000 42.70526 29.4% - 0s 0 0 42.59962 0 133 33.00000 42.59962 29.1% - 0s 0 0 42.56572 0 133 33.00000 42.56572 29.0% - 0s 0 0 42.56228 0 133 33.00000 42.56228 29.0% - 0s 0 0 42.56180 0 133 33.00000 42.56180 29.0% - 0s 0 0 42.56180 0 133 33.00000 42.56180 29.0% - 0s 0 2 42.56075 0 133 33.00000 42.56075 29.0% - 0s H 39 26 34.0000000 42.43322 24.8% 53.9 0s 612 231 39.69207 16 131 34.00000 39.69207 16.7% 40.1 5s H 1597 403 35.0000000 39.44138 12.7% 38.9 6s 3918 167 cutoff 29 35.00000 36.66667 4.76% 31.9 10s Cutting planes: Gomory: 4 Clique: 3 Zero half: 37 Explored 4133 nodes (129192 simplex iterations) in 10.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.500000000000e+01, best bound 3.500000000000e+01, gap 0.0%