Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:19:11 2012 Optimize a model with 86 rows, 231 columns and 231 nonzeros Model has 170 quadratic constraints Presolve removed 0 rows and 3 columns Presolve time: 0.99s Presolved: 86 rows, 228 columns, 228 nonzeros Variable types: 170 continuous, 58 integer (57 binary) Root relaxation: objective 0.000000e+00, 28 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 44.0000000 - - - 0s 0 0 0.00000 0 5 44.00000 0.00000 100% - 1s 0 0 0.00000 0 11 44.00000 0.00000 100% - 1s 0 0 0.00000 0 35 44.00000 0.00000 100% - 1s 0 2 0.00000 0 35 44.00000 0.00000 100% - 1s * 35 35 25 20.0000000 2.85714 85.7% 16.6 1s * 36 34 25 17.0000000 2.85714 83.2% 16.6 1s H 47 24 10.0000000 3.59200 64.1% 15.1 1s * 235 23 8 9.0000000 6.58974 26.8% 12.0 1s Cutting planes: Explored 273 nodes (3775 simplex iterations) in 1.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%