Gurobi 5.0.1 (linux64) logging started Sat Nov 17 21:23:37 2012 Optimize a model with 217 rows, 462 columns and 462 nonzeros Model has 432 quadratic constraints Presolve time: 2.50s Presolved: 217 rows, 462 columns, 462 nonzeros Variable types: 432 continuous, 30 integer (30 binary) Root relaxation: objective 0.000000e+00, 15 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 125.0000000 - - - 2s 0 0 0.00000 0 28 125.00000 0.00000 100% - 2s 0 0 0.50000 0 30 125.00000 0.50000 100% - 2s 0 0 0.50000 0 30 125.00000 0.50000 100% - 2s 0 2 0.50000 0 30 125.00000 0.50000 100% - 2s * 43 43 22 94.0000000 10.30769 89.0% 45.7 2s * 44 42 23 93.0000000 10.30769 88.9% 44.9 2s * 294 226 24 91.0000000 22.56805 75.2% 47.9 2s * 344 236 21 88.0000000 24.48718 72.2% 45.5 3s 668 375 31.99231 16 276 88.00000 31.99231 63.6% 56.9 5s 4314 1896 cutoff 47 88.00000 46.35714 47.3% 32.9 10s 8748 3620 74.94737 41 259 88.00000 54.46154 38.1% 27.9 15s 13393 5068 75.73684 47 249 88.00000 59.00000 33.0% 25.7 20s 18177 6298 77.10526 46 263 88.00000 61.80000 29.8% 24.5 25s 23152 7380 79.55556 50 254 88.00000 64.00000 27.3% 23.6 30s *25619 7535 58 86.0000000 65.00000 24.4% 23.3 32s 26040 7578 76.50000 47 255 86.00000 65.20000 24.2% 23.3 35s 28939 7902 81.05882 41 249 86.00000 66.47619 22.7% 23.2 40s 33514 8196 cutoff 40 86.00000 68.15385 20.8% 23.0 45s *35155 8087 48 85.0000000 68.76471 19.1% 23.0 46s 38082 8029 79.64706 40 254 85.00000 69.87500 17.8% 22.9 50s *40203 7693 52 84.0000000 70.60000 16.0% 22.9 52s 42703 7431 77.89474 37 289 84.00000 71.58333 14.8% 22.9 55s H42883 7011 83.0000000 71.66667 13.7% 22.9 55s 46757 6094 cutoff 43 83.00000 73.37500 11.6% 22.8 60s 50340 4843 79.55556 41 267 83.00000 75.17647 9.43% 22.7 65s 55256 2120 82.00000 43 226 83.00000 78.50000 5.42% 22.3 70s Explored 57799 nodes (1256888 simplex iterations) in 72.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.300000000054e+01, best bound 8.300000000054e+01, gap 0.0%