Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:37:54 2012 Optimize a model with 197 rows, 421 columns and 421 nonzeros Model has 392 quadratic constraints Presolve time: 2.28s Presolved: 197 rows, 421 columns, 421 nonzeros Variable types: 392 continuous, 29 integer (29 binary) Root relaxation: objective 0.000000e+00, 14 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 105.0000000 - - - 2s 0 0 0.00000 0 26 105.00000 0.00000 100% - 2s 0 0 0.44032 0 29 105.00000 0.44032 100% - 2s 0 2 0.44444 0 29 105.00000 0.44444 100% - 2s * 39 39 20 83.0000000 3.96380 95.2% 45.3 2s * 40 38 21 81.0000000 3.96380 95.1% 44.4 2s H 489 311 80.0000000 18.89423 76.4% 39.7 2s 784 466 49.00000 60 199 80.00000 23.76923 70.3% 51.5 5s * 3283 1286 39 77.0000000 38.11178 50.5% 32.3 7s 5062 1856 70.63131 44 223 77.00000 43.66667 43.3% 29.3 10s H 5648 1987 76.0000000 45.40720 40.3% 28.7 14s 6063 2052 60.82532 36 241 76.00000 46.48384 38.8% 28.4 15s 10628 2828 63.11765 38 231 76.00000 53.00947 30.3% 26.0 20s 14595 3250 64.77820 49 251 76.00000 56.82576 25.2% 24.8 25s *18483 3289 40 75.0000000 59.88734 20.2% 24.0 29s 18486 3288 65.75823 42 229 75.00000 59.88889 20.1% 24.0 30s 23360 2963 71.47821 45 232 75.00000 63.05206 15.9% 23.3 35s 28713 1574 cutoff 40 75.00000 67.80671 9.59% 22.8 40s Explored 31066 nodes (692247 simplex iterations) in 41.60 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.500000000049e+01, best bound 7.500000000049e+01, gap 0.0%