Gurobi 5.0.1 (linux64) logging started Sat Nov 17 21:46:20 2012 Optimize a model with 227 rows, 483 columns and 483 nonzeros Model has 452 quadratic constraints Presolve time: 2.64s Presolved: 227 rows, 483 columns, 483 nonzeros Variable types: 452 continuous, 31 integer (31 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 0 121.0000000 - - - 2s 0 0 0.00000 0 30 121.00000 0.00000 100% - 2s 0 0 0.72258 0 31 121.00000 0.72258 99.4% - 2s 0 2 0.95000 0 31 121.00000 0.95000 99.2% - 2s * 45 45 26 107.0000000 6.13684 94.3% 40.4 2s H 72 61 102.0000000 6.19286 93.9% 42.5 2s * 82 70 21 91.0000000 6.19286 93.2% 41.6 2s * 186 140 21 89.0000000 10.18750 88.6% 47.0 2s 688 383 85.44444 32 197 89.00000 28.02667 68.5% 53.4 5s 4068 1743 cutoff 56 89.00000 46.00000 48.3% 33.3 10s 8212 3266 77.89111 45 253 89.00000 55.20000 38.0% 28.4 15s 12448 4533 68.27210 45 292 89.00000 59.78222 32.8% 26.6 20s 16950 5705 73.28571 39 262 89.00000 63.00000 29.2% 25.3 25s 21591 6634 87.30719 48 236 89.00000 65.53619 26.4% 24.4 30s 26269 7374 76.41650 43 246 89.00000 67.54906 24.1% 23.8 35s 31062 8076 76.35391 41 293 89.00000 69.30000 22.1% 23.3 40s 35899 8584 87.99115 49 288 89.00000 70.89111 20.3% 22.9 45s 40874 8983 85.97381 49 253 89.00000 72.29412 18.8% 22.6 50s 41004 9001 83.35186 50 257 89.00000 72.33333 18.7% 22.6 57s 43865 9115 87.86389 45 233 89.00000 73.06250 17.9% 22.4 60s 48864 9214 84.06250 43 246 89.00000 74.36049 16.4% 22.2 65s 53937 9206 80.30643 42 265 89.00000 75.51852 15.1% 22.0 70s 59219 9077 cutoff 50 89.00000 76.66688 13.9% 21.8 75s 65094 8695 78.60155 41 277 89.00000 77.94349 12.4% 21.6 80s 71204 8121 82.94737 51 256 89.00000 79.18417 11.0% 21.3 85s 77569 7160 cutoff 48 89.00000 80.58055 9.46% 21.0 90s 84432 5433 86.76010 46 247 89.00000 82.28571 7.54% 20.7 95s 91939 1820 cutoff 51 89.00000 85.25000 4.21% 20.2 100s Explored 94464 nodes (1884168 simplex iterations) in 101.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.900000000056e+01, best bound 8.900000000056e+01, gap 0.0%