Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:00:21 2012 Optimize a model with 178 rows, 409 columns and 409 nonzeros Model has 354 quadratic constraints Presolve time: 2.06s Presolved: 178 rows, 409 columns, 409 nonzeros Variable types: 354 continuous, 55 integer (55 binary) Root relaxation: objective 0.000000e+00, 27 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 94.0000000 - - - 2s 0 0 0.00000 0 29 94.00000 0.00000 100% - 2s 0 0 0.01317 0 47 94.00000 0.01317 100% - 2s 0 2 0.14146 0 47 94.00000 0.14146 100% - 2s * 44 44 23 52.0000000 5.57075 89.3% 41.8 2s * 52 42 24 51.0000000 5.57075 89.1% 36.1 2s H 122 96 48.0000000 6.51923 86.4% 36.5 2s * 297 226 21 47.0000000 10.44575 77.8% 42.1 2s 1275 608 44.73333 41 194 47.00000 16.00000 66.0% 41.4 5s * 1597 613 44 46.0000000 21.40000 53.5% 36.7 5s H 2065 696 45.0000000 23.23077 48.4% 33.0 5s H 3060 1027 44.0000000 26.00000 40.9% 28.5 6s 3920 1218 33.04348 36 230 44.00000 28.33333 35.6% 26.5 10s 6319 1522 37.42857 33 237 44.00000 32.00000 27.3% 23.5 15s 9335 1604 cutoff 36 44.00000 34.92683 20.6% 21.7 20s 12103 1160 41.50000 41 234 44.00000 37.72000 14.3% 21.1 25s Explored 14414 nodes (295056 simplex iterations) in 27.85 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.400000000000e+01, best bound 4.400000000000e+01, gap 0.0%