Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:10:00 2012 Optimize a model with 227 rows, 658 columns and 658 nonzeros Model has 452 quadratic constraints Presolve removed 0 rows and 19 columns Presolve time: 2.64s Presolved: 227 rows, 639 columns, 639 nonzeros Variable types: 452 continuous, 187 integer (186 binary) Root relaxation: objective 0.000000e+00, 79 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 123.0000000 - - - 2s 0 0 0.00000 0 80 123.00000 0.00000 100% - 2s 0 0 0.00000 0 104 123.00000 0.00000 100% - 2s 0 0 0.00000 0 104 123.00000 0.00000 100% - 2s 0 2 0.00000 0 103 123.00000 0.00000 100% - 2s H 51 51 25.0000000 2.95652 88.2% 25.2 2s H 137 102 23.0000000 3.08861 86.6% 18.4 2s * 138 97 42 21.0000000 3.08861 85.3% 18.9 2s H 164 77 18.0000000 3.12414 82.6% 18.2 2s * 197 98 22 17.0000000 3.79290 77.7% 18.9 3s * 201 85 21 16.0000000 3.79290 76.3% 19.5 3s * 432 168 17 15.0000000 5.46429 63.6% 20.6 3s 872 261 12.70085 17 318 15.00000 6.86517 54.2% 35.1 5s H 880 227 14.0000000 6.86517 51.0% 35.4 5s * 1370 108 18 13.0000000 9.50000 26.9% 43.4 6s Explored 1719 nodes (77815 simplex iterations) in 7.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%