Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:34:15 2012 Optimize a model with 241 rows, 698 columns and 698 nonzeros Model has 480 quadratic constraints Presolve removed 0 rows and 22 columns Presolve time: 2.80s Presolved: 241 rows, 676 columns, 676 nonzeros Variable types: 480 continuous, 196 integer (195 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 115.0000000 - - - 2s 0 0 0.00000 0 86 115.00000 0.00000 100% - 2s 0 0 0.00000 0 5 115.00000 0.00000 100% - 2s 0 0 0.00000 0 145 115.00000 0.00000 100% - 2s 0 2 0.00000 0 144 115.00000 0.00000 100% - 3s H 54 52 19.0000000 2.22018 88.3% 33.3 3s * 69 46 45 18.0000000 2.22018 87.7% 29.1 3s * 106 51 19 17.0000000 2.22222 86.9% 24.6 3s * 212 109 29 16.0000000 2.78947 82.6% 20.9 3s H 529 165 15.0000000 7.77778 48.1% 20.2 3s 1153 195 14.33333 33 113 15.00000 11.00000 26.7% 22.5 5s * 1482 156 21 14.0000000 11.00000 21.4% 29.3 5s Explored 2772 nodes (96415 simplex iterations) in 8.90 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.400000000000e+01, best bound 1.400000000000e+01, gap 0.0%