Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:19 2012 Optimize a model with 69 rows, 190 columns and 190 nonzeros Model has 136 quadratic constraints Presolve removed 0 rows and 1 columns Presolve time: 0.79s Presolved: 69 rows, 189 columns, 189 nonzeros Variable types: 136 continuous, 53 integer (52 binary) Root relaxation: objective 0.000000e+00, 27 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 38.0000000 - - - 0s 0 0 0.00000 0 6 38.00000 0.00000 100% - 0s 0 0 0.00000 0 3 38.00000 0.00000 100% - 0s 0 0 0.00000 0 3 38.00000 0.00000 100% - 0s 0 2 0.00000 0 34 38.00000 0.00000 100% - 0s * 15 15 9 10.0000000 1.60870 83.9% 48.8 0s H 27 14 7.0000000 1.68750 75.9% 34.9 0s * 31 12 10 6.0000000 1.68750 71.9% 31.8 0s Cutting planes: Gomory: 1 Explored 58 nodes (1650 simplex iterations) in 0.84 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%