Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:50 2012 Optimize a model with 47 rows, 124 columns and 124 nonzeros Model has 92 quadratic constraints Presolve removed 0 rows and 3 columns Presolve time: 0.54s Presolved: 47 rows, 121 columns, 121 nonzeros Variable types: 92 continuous, 29 integer (28 binary) Root relaxation: objective 0.000000e+00, 16 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 20.0000000 - - - 0s 0 0 0.00000 0 2 20.00000 0.00000 100% - 0s 0 0 0.00000 0 3 20.00000 0.00000 100% - 0s 0 0 0.00000 0 4 20.00000 0.00000 100% - 0s 0 2 0.00000 0 24 20.00000 0.00000 100% - 0s * 24 22 14 11.0000000 2.30769 79.0% 17.0 0s * 26 19 12 10.0000000 2.30769 76.9% 16.0 0s * 39 23 9 9.0000000 3.26923 63.7% 14.9 0s * 79 26 7 8.0000000 4.00000 50.0% 12.3 0s Cutting planes: Explored 135 nodes (1778 simplex iterations) in 0.58 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%