Gurobi 5.0.1 (linux64) logging started Sat Nov 17 21:21:25 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 0 116.0000000 - - - 2s 0 0 0.00000 0 28 116.00000 0.00000 100% - 2s 0 0 0.54167 0 30 116.00000 0.54167 100% - 2s 0 0 0.54167 0 30 116.00000 0.54167 100% - 2s 0 2 0.54167 0 30 116.00000 0.54167 100% - 2s * 45 45 25 97.0000000 7.86420 91.9% 44.6 2s * 46 44 25 96.0000000 7.86420 91.8% 43.7 2s H 87 75 92.0000000 7.87121 91.4% 45.8 2s * 191 158 23 91.0000000 16.66667 81.7% 48.9 2s * 192 156 23 90.0000000 16.66667 81.5% 48.6 2s * 194 150 21 89.0000000 16.66667 81.3% 48.2 2s * 315 214 19 84.0000000 21.76471 74.1% 50.0 3s 604 337 43.95000 8 246 84.00000 30.27273 64.0% 47.7 5s 3253 1261 56.71429 34 260 84.00000 42.35714 49.6% 37.4 10s 7193 2226 75.05263 40 246 84.00000 51.71429 38.4% 31.1 15s 11335 2868 67.90000 34 274 84.00000 58.00000 31.0% 28.8 20s 15589 3275 72.88889 39 252 84.00000 62.00000 26.2% 27.6 25s 19999 3568 68.10000 42 262 84.00000 64.41176 23.3% 26.7 30s 24425 3706 cutoff 43 84.00000 66.73333 20.6% 26.2 35s 28883 3581 81.50000 37 236 84.00000 68.93750 17.9% 25.8 40s 33448 3257 cutoff 45 84.00000 70.80000 15.7% 25.4 45s 38390 2718 81.93750 38 255 84.00000 73.00000 13.1% 25.0 50s 43586 1721 cutoff 45 84.00000 75.80000 9.76% 24.6 55s Explored 47162 nodes (1141837 simplex iterations) in 57.98 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.400000000054e+01, best bound 8.400000000054e+01, gap 0.0%