Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:04:46 2012 Optimize a model with 160 rows, 344 columns and 344 nonzeros Model has 318 quadratic constraints Presolve time: 1.85s Presolved: 160 rows, 344 columns, 344 nonzeros Variable types: 318 continuous, 26 integer (26 binary) Root relaxation: objective 0.000000e+00, 13 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 80.0000000 - - - 1s 0 0 0.00000 0 24 80.00000 0.00000 100% - 1s 0 0 0.68750 0 26 80.00000 0.68750 99.1% - 1s 0 0 0.68750 0 26 80.00000 0.68750 99.1% - 1s 0 2 0.68750 0 26 80.00000 0.68750 99.1% - 1s H 27 27 75.0000000 6.27500 91.6% 43.5 1s * 32 32 18 70.0000000 6.27500 91.0% 40.5 1s * 38 32 18 67.0000000 6.27500 90.6% 36.2 1s * 242 186 20 65.0000000 18.50000 71.5% 41.4 2s * 472 263 13 64.0000000 23.80000 62.8% 38.8 2s 2019 606 47.50000 33 198 64.00000 32.33333 49.5% 36.6 5s * 2309 653 43 62.0000000 33.50000 46.0% 34.7 5s 6458 917 52.17647 31 208 62.00000 48.33333 22.0% 26.5 10s Explored 9345 nodes (227859 simplex iterations) in 12.55 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.200000000000e+01, best bound 6.200000000000e+01, gap 0.0%