Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:41:02 2012 Optimize a model with 435 rows, 311 columns and 1396 nonzeros Presolve time: 0.00s Presolved: 435 rows, 311 columns, 1396 nonzeros Variable types: 0 continuous, 311 integer (311 binary) Found heuristic solution: objective 93.0000000 Root relaxation: objective 0.000000e+00, 133 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 93 93.00000 0.00000 100% - 0s H 0 0 83.0000000 0.00000 100% - 0s H 0 0 81.0000000 0.00000 100% - 0s 0 0 0.61494 0 94 81.00000 0.61494 99.2% - 0s H 0 0 77.0000000 0.61494 99.2% - 0s 0 0 1.00000 0 97 77.00000 1.00000 98.7% - 0s H 0 0 74.0000000 1.00000 98.6% - 0s 0 0 1.00000 0 97 74.00000 1.00000 98.6% - 0s 0 0 1.00000 0 95 74.00000 1.00000 98.6% - 0s 0 2 1.00000 0 93 74.00000 1.00000 98.6% - 0s * 52 52 27 50.0000000 2.32956 95.3% 38.9 0s * 830 552 39 48.0000000 12.50000 74.0% 31.7 1s * 1612 635 34 47.0000000 19.90323 57.7% 27.9 2s * 2069 742 29 46.0000000 22.00000 52.2% 27.3 2s H 3171 1048 45.0000000 24.00000 46.7% 25.7 4s 4143 1333 35.00000 21 144 45.00000 25.40000 43.6% 25.0 5s * 5917 1756 27 44.0000000 27.00000 38.6% 23.6 6s 9756 2381 36.40789 22 145 44.00000 29.20779 33.6% 22.2 10s H 9858 2301 43.0000000 29.26087 32.0% 22.1 10s 16266 2836 40.80822 24 151 43.00000 31.40000 27.0% 20.9 15s *22210 2845 28 42.0000000 32.84615 21.8% 20.2 19s 23080 2810 38.46667 22 144 42.00000 33.01587 21.4% 20.2 20s 30382 2344 39.64935 22 146 42.00000 34.37778 18.1% 19.6 25s 37527 1534 39.47368 22 145 42.00000 35.90909 14.5% 19.3 30s Explored 43038 nodes (811248 simplex iterations) in 33.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.200000000000e+01, best bound 4.200000000000e+01, gap 0.0%