Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:28:38 2012 Optimize a model with 193 rows, 444 columns and 444 nonzeros Model has 384 quadratic constraints Presolve time: 2.24s Presolved: 193 rows, 444 columns, 444 nonzeros Variable types: 384 continuous, 60 integer (60 binary) Root relaxation: objective 0.000000e+00, 30 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 99.0000000 - - - 2s 0 0 0.00000 0 38 99.00000 0.00000 100% - 2s 0 0 0.18969 0 58 99.00000 0.18969 100% - 2s 0 2 0.20098 0 58 99.00000 0.20098 100% - 2s H 48 48 66.0000000 3.10000 95.3% 31.2 2s * 57 57 31 52.0000000 3.10000 94.0% 31.2 2s 1251 684 31.87273 38 263 52.00000 15.15789 70.9% 40.3 5s * 3481 1783 42 51.0000000 22.45455 56.0% 27.5 7s H 4344 1804 47.0000000 23.98208 49.0% 25.9 8s 5411 2203 34.18404 39 263 47.00000 25.23306 46.3% 24.8 10s H 5415 2085 46.0000000 25.23306 45.1% 24.8 10s 7674 2698 34.29709 35 270 46.00000 27.69460 39.8% 23.2 15s 10885 3389 43.54852 39 256 46.00000 30.12973 34.5% 22.0 20s 13813 3901 43.14583 41 252 46.00000 31.76045 31.0% 21.3 25s 18118 4517 40.14325 47 261 46.00000 33.70000 26.7% 20.4 30s 22281 4850 43.98031 43 241 46.00000 35.15000 23.6% 19.8 35s 26590 4988 43.90390 41 246 46.00000 36.40298 20.9% 19.4 40s 31177 4888 40.06250 43 253 46.00000 37.62828 18.2% 19.0 45s 35971 4543 cutoff 41 46.00000 38.79894 15.7% 18.6 50s 40357 3947 44.16367 36 253 46.00000 39.80000 13.5% 18.3 55s 44104 3054 44.09804 42 274 46.00000 40.80752 11.3% 18.0 60s 48092 1151 43.09730 43 254 46.00000 42.34988 7.94% 17.9 65s Explored 49852 nodes (882405 simplex iterations) in 66.59 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.600000000005e+01, best bound 4.600000000005e+01, gap 0.0%