Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:17:58 2012 Optimize a model with 187 rows, 431 columns and 431 nonzeros Model has 372 quadratic constraints Presolve time: 2.16s Presolved: 187 rows, 431 columns, 431 nonzeros Variable types: 372 continuous, 59 integer (59 binary) Root relaxation: objective 0.000000e+00, 29 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 104.0000000 - - - 2s 0 0 0.00000 0 42 104.00000 0.00000 100% - 2s 0 0 0.32828 0 59 104.00000 0.32828 100% - 2s 0 2 0.36842 0 59 104.00000 0.36842 100% - 2s H 45 45 59.0000000 4.57895 92.2% 34.4 2s H 99 74 55.0000000 4.65000 91.5% 30.3 2s * 99 74 20 54.0000000 4.65000 91.4% 30.4 2s H 241 185 52.0000000 7.64450 85.3% 36.0 2s 1305 636 50.00000 51 223 52.00000 13.80615 73.4% 39.6 5s * 5406 2531 69 51.0000000 26.08000 48.9% 25.7 9s 5586 2585 45.68293 50 250 51.00000 26.20000 48.6% 25.6 10s H 6850 2845 49.0000000 27.28345 44.3% 25.1 11s * 7092 2795 45 48.0000000 27.56000 42.6% 24.9 11s 7733 2968 45.73058 39 233 48.00000 28.19459 41.3% 24.6 15s 9413 3412 37.11998 37 247 48.00000 29.74767 38.0% 24.0 20s 12669 4097 cutoff 46 48.00000 31.61352 34.1% 23.4 25s 15892 4621 43.12893 43 236 48.00000 33.00000 31.3% 22.9 30s 19504 4961 43.54545 44 238 48.00000 34.26316 28.6% 22.5 35s 23696 5237 42.92909 42 243 48.00000 35.63265 25.8% 22.2 40s 27937 5302 46.08111 40 238 48.00000 36.71429 23.5% 22.0 45s 30754 5243 cutoff 45 48.00000 37.42646 22.0% 21.8 50s 32500 5181 45.28788 47 231 48.00000 37.86712 21.1% 21.7 57s 34690 5074 40.86281 47 239 48.00000 38.40390 20.0% 21.6 60s 38911 4698 45.99554 49 206 48.00000 39.45125 17.8% 21.5 65s 43032 4170 44.36281 47 223 48.00000 40.41379 15.8% 21.3 70s 47073 3222 46.55406 41 252 48.00000 41.69231 13.1% 21.2 75s 51887 1200 46.53244 42 239 48.00000 44.06689 8.19% 21.0 80s Explored 53625 nodes (1113726 simplex iterations) in 81.60 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.800000000005e+01, best bound 4.800000000005e+01, gap 0.0%