Gurobi 5.0.1 (linux64) logging started Sun Nov 18 02:09:15 2012 Optimize a model with 196 rows, 453 columns and 453 nonzeros Model has 390 quadratic constraints Presolve time: 2.27s Presolved: 196 rows, 453 columns, 453 nonzeros Variable types: 390 continuous, 63 integer (63 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 97.0000000 - - - 2s 0 0 0.00000 0 61 97.00000 0.00000 100% - 2s 0 0 0.49166 0 63 97.00000 0.49166 99.5% - 2s 0 2 0.55205 0 63 97.00000 0.55205 99.4% - 2s H 49 49 59.0000000 3.66667 93.8% 38.5 2s * 128 103 23 55.0000000 4.48780 91.8% 39.7 2s H 298 209 54.0000000 11.22222 79.2% 43.2 2s 920 533 37.05405 51 271 54.00000 17.27466 68.0% 50.7 5s H 1333 597 50.0000000 18.66667 62.7% 42.8 5s 3546 1564 42.57143 47 247 50.00000 26.66450 46.7% 28.6 11s 6303 2670 39.25000 40 260 50.00000 29.76923 40.5% 24.4 15s 8748 3461 47.81250 38 267 50.00000 31.50000 37.0% 22.8 20s 11266 4097 45.87073 39 245 50.00000 32.88235 34.2% 21.8 26s 13727 4760 47.46571 44 249 50.00000 34.00000 32.0% 21.1 30s 17943 5635 48.75000 47 268 50.00000 35.46667 29.1% 20.2 35s 22439 6482 48.43478 41 255 50.00000 36.70000 26.6% 19.6 40s 26976 7081 38.79619 41 255 50.00000 37.79377 24.4% 19.2 45s 31525 7519 48.52216 47 268 50.00000 38.70000 22.6% 19.0 50s 36097 7789 42.20755 44 285 50.00000 39.56765 20.9% 18.7 55s *37736 7508 53 49.0000000 39.88203 18.6% 18.6 56s 37852 7498 47.87906 49 233 49.00000 39.90909 18.6% 18.6 61s 37965 7491 48.00000 51 241 49.00000 39.94283 18.5% 18.6 65s 41947 7202 45.68000 43 252 49.00000 40.85714 16.6% 18.5 70s 44771 6928 cutoff 44 49.00000 41.50000 15.3% 18.4 75s 48867 6223 cutoff 42 49.00000 42.48495 13.3% 18.4 80s 53232 5178 cutoff 45 49.00000 43.47665 11.3% 18.3 85s 57348 3635 47.40443 41 252 49.00000 44.53846 9.11% 18.2 90s Explored 62983 nodes (1124501 simplex iterations) in 94.65 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.900000000005e+01, best bound 4.900000000005e+01, gap 0.0%