Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:46:44 2012 Optimize a model with 1036 rows, 145 columns and 2072 nonzeros Presolve removed 409 rows and 0 columns Presolve time: 0.01s Presolved: 627 rows, 145 columns, 1646 nonzeros Variable types: 0 continuous, 145 integer (145 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 4.735781e+01, 425 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 47.35781 0 145 29.00000 47.35781 63.3% - 0s 0 0 47.00333 0 144 29.00000 47.00333 62.1% - 0s 0 0 46.85042 0 145 29.00000 46.85042 61.6% - 0s 0 0 46.73426 0 145 29.00000 46.73426 61.2% - 0s 0 0 46.56068 0 144 29.00000 46.56068 60.6% - 0s 0 0 46.01228 0 142 29.00000 46.01228 58.7% - 0s 0 0 45.90030 0 141 29.00000 45.90030 58.3% - 0s H 0 0 31.0000000 45.90030 48.1% - 0s 0 0 45.73501 0 143 31.00000 45.73501 47.5% - 0s H 0 0 32.0000000 45.73501 42.9% - 0s 0 0 45.59738 0 141 32.00000 45.59738 42.5% - 0s 0 0 45.56180 0 143 32.00000 45.56180 42.4% - 0s 0 0 45.55768 0 143 32.00000 45.55768 42.4% - 0s 0 0 45.55768 0 143 32.00000 45.55768 42.4% - 0s 0 2 45.55428 0 143 32.00000 45.55428 42.4% - 0s H 101 57 34.0000000 44.14800 29.8% 53.1 0s H 111 51 35.0000000 44.14800 26.1% 50.0 0s 611 235 41.01535 12 145 35.00000 42.56487 21.6% 43.0 5s 2342 960 40.47177 30 112 35.00000 40.99294 17.1% 43.1 10s 5474 2018 cutoff 32 35.00000 39.55102 13.0% 35.8 15s 9500 2594 36.14286 25 73 35.00000 38.50000 10.0% 32.0 20s 14304 2345 37.04878 33 82 35.00000 37.60714 7.45% 29.6 25s Cutting planes: Gomory: 5 Clique: 3 Zero half: 36 Explored 19474 nodes (532090 simplex iterations) in 28.61 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%