Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:51:46 2012 Optimize a model with 202 rows, 464 columns and 464 nonzeros Model has 402 quadratic constraints Presolve time: 2.34s Presolved: 202 rows, 464 columns, 464 nonzeros Variable types: 402 continuous, 62 integer (62 binary) Root relaxation: objective 0.000000e+00, 31 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 103.0000000 - - - 2s 0 0 0.00000 0 32 103.00000 0.00000 100% - 2s 0 0 0.00135 0 59 103.00000 0.00135 100% - 2s 0 2 0.01446 0 59 103.00000 0.01446 100% - 2s * 42 42 24 59.0000000 4.59259 92.2% 40.0 2s * 43 41 25 58.0000000 4.59259 92.1% 39.1 2s H 318 219 52.0000000 8.37187 83.9% 45.1 2s 794 414 33.60870 41 297 52.00000 17.85714 65.7% 57.4 5s 4502 1668 44.96500 36 271 52.00000 31.60000 39.2% 30.0 10s 8680 2728 cutoff 45 52.00000 36.96434 28.9% 25.5 15s *12841 3329 53 51.0000000 39.32826 22.9% 23.4 19s 13002 3332 cutoff 50 51.00000 39.41563 22.7% 23.4 20s 13253 3341 41.78961 35 296 51.00000 39.50965 22.5% 23.3 25s 15537 3448 44.17647 38 283 51.00000 40.56222 20.5% 22.7 30s 19498 3471 44.62831 37 292 51.00000 42.10526 17.4% 21.9 35s 22889 3278 47.44705 45 275 51.00000 43.25901 15.2% 21.3 40s 26646 2853 46.02075 47 261 51.00000 44.43750 12.9% 20.6 45s 30474 1955 49.35714 46 238 51.00000 45.91347 10.0% 20.2 50s Explored 33881 nodes (672167 simplex iterations) in 53.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.100000000005e+01, best bound 5.100000000005e+01, gap 0.0%