Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:10:16 2012 Optimize a model with 182 rows, 420 columns and 420 nonzeros Model has 362 quadratic constraints Presolve time: 2.11s Presolved: 182 rows, 420 columns, 420 nonzeros Variable types: 362 continuous, 58 integer (58 binary) Root relaxation: objective 0.000000e+00, 29 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 97.0000000 - - - 2s 0 0 0.00000 0 27 97.00000 0.00000 100% - 2s 0 0 0.00000 0 36 97.00000 0.00000 100% - 2s 0 0 0.00000 0 36 97.00000 0.00000 100% - 2s 0 2 0.00000 0 36 97.00000 0.00000 100% - 2s H 44 44 54.0000000 4.70270 91.3% 42.6 2s * 304 189 22 53.0000000 14.28302 73.1% 35.4 2s * 463 263 19 52.0000000 18.58065 64.3% 35.3 2s * 567 244 14 48.0000000 19.00000 60.4% 35.2 2s 998 422 cutoff 59 48.00000 21.64706 54.9% 45.5 5s * 3238 1108 45 47.0000000 28.68421 39.0% 29.4 7s H 5228 1508 46.0000000 31.53846 31.4% 25.5 9s 5256 1513 35.00000 38 229 46.00000 31.62500 31.3% 25.5 10s 5816 1590 43.63636 38 245 46.00000 32.25000 29.9% 25.0 15s 9213 1877 43.64535 41 244 46.00000 35.40000 23.0% 22.4 20s 11368 1820 43.90698 39 243 46.00000 37.22222 19.1% 21.7 25s 16266 799 cutoff 43 46.00000 41.44444 9.90% 20.7 30s Explored 17491 nodes (355728 simplex iterations) in 30.97 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.600000000000e+01, best bound 4.600000000000e+01, gap 0.0%