Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:30 2012 Optimize a model with 65 rows, 178 columns and 178 nonzeros Model has 128 quadratic constraints Presolve removed 0 rows and 2 columns Presolve time: 0.75s Presolved: 65 rows, 176 columns, 176 nonzeros Variable types: 128 continuous, 48 integer (47 binary) Root relaxation: objective 0.000000e+00, 23 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 35.0000000 - - - 0s 0 0 0.00000 0 2 35.00000 0.00000 100% - 0s 0 0 0.00000 0 34 35.00000 0.00000 100% - 0s 0 0 0.00000 0 32 35.00000 0.00000 100% - 0s 0 2 0.00000 0 31 35.00000 0.00000 100% - 0s * 21 21 14 11.0000000 2.61538 76.2% 20.1 0s * 23 19 14 9.0000000 2.61538 70.9% 18.6 0s * 36 23 11 7.0000000 2.64000 62.3% 16.8 0s * 167 4 8 6.0000000 5.73333 4.44% 11.0 0s Cutting planes: Explored 172 nodes (2261 simplex iterations) in 0.81 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%