Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:49:01 2012 Optimize a model with 189 rows, 458 columns and 458 nonzeros Model has 376 quadratic constraints Presolve time: 2.19s Presolved: 189 rows, 458 columns, 458 nonzeros Variable types: 376 continuous, 82 integer (82 binary) Root relaxation: objective 0.000000e+00, 41 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 83.0000000 - - - 2s 0 0 0.00000 0 44 83.00000 0.00000 100% - 2s 0 0 0.07312 0 80 83.00000 0.07312 100% - 2s 0 2 0.07407 0 80 83.00000 0.07407 100% - 2s H 46 46 46.0000000 5.42857 88.2% 35.0 2s * 80 59 21 39.0000000 5.42857 86.1% 34.4 2s H 532 254 38.0000000 17.00000 55.3% 34.4 2s 1252 497 31.52941 45 277 38.00000 18.08766 52.4% 39.4 5s 5472 1955 28.88235 39 272 38.00000 23.11765 39.2% 24.7 10s * 8120 2465 51 37.0000000 25.22857 31.8% 22.7 12s 9855 2625 33.52778 40 243 37.00000 26.63571 28.0% 22.0 15s 10718 2687 31.07463 41 269 37.00000 27.21667 26.4% 21.6 20s 14102 2735 34.41176 45 256 37.00000 29.00000 21.6% 20.6 25s *16864 2257 49 36.0000000 30.41236 15.5% 20.3 29s 17724 2073 33.38983 45 245 36.00000 30.92308 14.1% 20.2 30s Explored 21552 nodes (417425 simplex iterations) in 33.74 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.600000000000e+01, best bound 3.600000000000e+01, gap 0.0%