Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:25 2012 Optimize a model with 62 rows, 165 columns and 165 nonzeros Model has 122 quadratic constraints Presolve removed 0 rows and 2 columns Presolve time: 0.71s Presolved: 62 rows, 163 columns, 163 nonzeros Variable types: 122 continuous, 41 integer (40 binary) Root relaxation: objective 0.000000e+00, 21 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 21.0000000 - - - 0s 0 0 0.00000 0 5 21.00000 0.00000 100% - 0s 0 0 0.00000 0 34 21.00000 0.00000 100% - 0s 0 0 0.00000 0 32 21.00000 0.00000 100% - 0s 0 2 0.00000 0 32 21.00000 0.00000 100% - 0s * 24 24 15 13.0000000 2.46667 81.0% 16.2 0s * 26 22 16 12.0000000 2.46667 79.4% 15.6 0s * 27 21 14 11.0000000 2.46667 77.6% 15.8 0s H 48 25 9.0000000 4.22222 53.1% 16.0 0s * 101 24 13 8.0000000 4.52941 43.4% 12.7 0s * 113 7 5 7.0000000 4.73684 32.3% 13.3 0s Cutting planes: Explored 129 nodes (2039 simplex iterations) in 0.77 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%