Gurobi 5.0.1 (linux64) logging started Sat Nov 17 21:18:08 2012 Optimize a model with 217 rows, 462 columns and 462 nonzeros Model has 432 quadratic constraints Presolve time: 2.52s 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 0 113.0000000 - - - 2s 0 0 0.00000 0 28 113.00000 0.00000 100% - 2s 0 0 0.46429 0 30 113.00000 0.46429 100% - 2s 0 0 0.46429 0 30 113.00000 0.46429 100% - 2s 0 2 0.46429 0 30 113.00000 0.46429 100% - 2s * 43 43 25 89.0000000 7.67460 91.4% 43.6 2s H 307 254 88.0000000 17.38462 80.2% 49.9 3s H 347 254 87.0000000 23.28896 73.2% 47.6 3s 760 442 52.57143 36 263 87.00000 30.66667 64.8% 56.6 5s * 2265 825 50 85.0000000 41.66667 51.0% 38.8 7s H 3513 1255 82.0000000 47.00000 42.7% 33.7 8s 4321 1405 68.47619 43 264 82.00000 50.21739 38.8% 32.8 10s 4965 1532 71.00000 37 280 82.00000 51.70000 37.0% 31.9 15s 7602 1846 68.88889 39 260 82.00000 57.00000 30.5% 30.5 20s 10551 1936 77.84211 40 266 82.00000 61.27273 25.3% 29.6 25s 14043 1808 78.22222 41 245 82.00000 66.00000 19.5% 29.0 30s 17819 1226 80.88235 41 268 82.00000 70.95312 13.5% 28.3 35s Explored 20548 nodes (563231 simplex iterations) in 37.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.200000000000e+01, best bound 8.200000000000e+01, gap 0.0%