Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:26:37 2012 Optimize a model with 385 rows, 252 columns and 1212 nonzeros Presolve time: 0.00s Presolved: 385 rows, 252 columns, 1212 nonzeros Variable types: 0 continuous, 252 integer (252 binary) Found heuristic solution: objective 81.0000000 Root relaxation: objective 0.000000e+00, 93 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 60 81.00000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s 0 0 0.75000 0 61 76.00000 0.75000 99.0% - 0s H 0 0 74.0000000 0.75000 99.0% - 0s 0 0 1.32000 0 62 74.00000 1.32000 98.2% - 0s H 0 0 72.0000000 1.32000 98.2% - 0s 0 0 1.53173 0 63 72.00000 1.53173 97.9% - 0s 0 0 1.60329 0 64 72.00000 1.60329 97.8% - 0s 0 0 1.61250 0 64 72.00000 1.61250 97.8% - 0s H 0 0 68.0000000 1.61250 97.6% - 0s 0 2 1.61805 0 64 68.00000 1.61805 97.6% - 0s * 39 39 23 60.0000000 5.49561 90.8% 35.6 0s * 74 61 19 55.0000000 6.52956 88.1% 35.2 0s * 83 61 23 54.0000000 6.52956 87.9% 32.6 0s * 202 147 22 51.0000000 8.90940 82.5% 35.0 0s * 263 185 15 47.0000000 11.83867 74.8% 35.8 0s 3857 922 37.43910 23 109 47.00000 24.67391 47.5% 29.6 5s 8816 1609 40.95652 23 104 47.00000 29.74200 36.7% 27.8 10s H 9834 1637 46.0000000 30.36589 34.0% 27.5 11s 14929 1560 44.53191 24 113 46.00000 33.50000 27.2% 26.5 15s 21831 852 cutoff 26 46.00000 37.10526 19.3% 25.4 20s Cutting planes: Gomory: 4 Explored 24755 nodes (612055 simplex iterations) in 22.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.600000000000e+01, best bound 4.600000000000e+01, gap 0.0%