Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:28:26 2012 Optimize a model with 475 rows, 329 columns and 1514 nonzeros Presolve time: 0.00s Presolved: 475 rows, 329 columns, 1514 nonzeros Variable types: 0 continuous, 329 integer (329 binary) Found heuristic solution: objective 100.0000000 Root relaxation: objective 0.000000e+00, 138 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 92 100.00000 0.00000 100% - 0s H 0 0 88.0000000 0.00000 100% - 0s 0 0 0.68889 0 94 88.00000 0.68889 99.2% - 0s H 0 0 82.0000000 0.68889 99.2% - 0s 0 0 0.78990 0 94 82.00000 0.78990 99.0% - 0s 0 0 0.80219 0 105 82.00000 0.80219 99.0% - 0s 0 0 0.80842 0 94 82.00000 0.80842 99.0% - 0s 0 0 0.83949 0 98 82.00000 0.83949 99.0% - 0s 0 0 0.84328 0 95 82.00000 0.84328 99.0% - 0s 0 0 0.91203 0 106 82.00000 0.91203 98.9% - 0s 0 2 0.91489 0 106 82.00000 0.91489 98.9% - 0s H 40 40 74.0000000 5.17222 93.0% 37.1 0s * 55 55 28 57.0000000 5.17222 90.9% 31.9 0s * 237 200 22 54.0000000 8.78652 83.7% 30.7 0s * 239 192 25 53.0000000 8.78652 83.4% 30.7 0s * 906 555 37 51.0000000 15.70175 69.2% 30.5 1s 3787 1600 35.17949 18 146 51.00000 27.76923 45.6% 24.0 5s 7906 2949 cutoff 23 51.00000 31.41463 38.4% 22.5 10s H 9893 3390 50.0000000 32.81818 34.4% 22.2 12s 12560 3929 48.78082 23 161 50.00000 34.25000 31.5% 22.1 15s 17409 4757 48.00000 24 146 50.00000 36.09091 27.8% 21.9 20s *18355 4583 30 49.0000000 36.33333 25.9% 21.9 21s 22238 4754 cutoff 23 49.00000 37.20000 24.1% 22.1 25s 27056 4763 44.33333 22 150 49.00000 38.12500 22.2% 22.2 30s 32689 4610 44.35211 22 148 49.00000 39.00000 20.4% 21.9 35s 38511 4240 47.11111 24 159 49.00000 39.92308 18.5% 21.8 40s 44813 3590 46.20000 23 150 49.00000 41.07143 16.2% 21.6 45s *48758 2488 26 48.0000000 42.20000 12.1% 21.4 48s H48819 2009 47.0000000 42.22222 10.2% 21.4 48s 50818 998 cutoff 23 47.00000 44.22388 5.91% 21.3 50s Cutting planes: Gomory: 1 Mod-K: 4 Explored 51910 nodes (1092236 simplex iterations) in 50.58 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.700000000000e+01, best bound 4.700000000000e+01, gap 0.0%