Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:19:20 2012 Optimize a model with 169 rows, 395 columns and 395 nonzeros Model has 336 quadratic constraints Presolve time: 1.96s Presolved: 169 rows, 395 columns, 395 nonzeros Variable types: 336 continuous, 59 integer (59 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 76.0000000 - - - 1s 0 0 0.00000 0 30 76.00000 0.00000 100% - 1s 0 0 0.00000 0 47 76.00000 0.00000 100% - 1s 0 0 0.00000 0 42 76.00000 0.00000 100% - 1s 0 2 0.00000 0 42 76.00000 0.00000 100% - 2s H 45 45 47.0000000 5.76923 87.7% 34.9 2s * 52 48 28 46.0000000 5.76923 87.5% 31.9 2s * 184 146 20 44.0000000 7.03704 84.0% 34.2 2s H 213 154 41.0000000 7.20000 82.4% 35.5 2s 1713 464 39.77273 44 213 41.00000 20.26922 50.6% 35.1 5s H 3286 891 40.0000000 25.23636 36.9% 28.4 6s 5475 1022 38.00000 47 212 40.00000 29.26087 26.8% 25.9 10s 8106 825 cutoff 40 40.00000 33.36727 16.6% 24.1 15s Explored 9922 nodes (228432 simplex iterations) in 17.43 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+01, best bound 4.000000000000e+01, gap 0.0%