Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:38 2012 Optimize a model with 59 rows, 160 columns and 160 nonzeros Model has 116 quadratic constraints Presolve removed 0 rows and 3 columns Presolve time: 0.68s Presolved: 59 rows, 157 columns, 157 nonzeros Variable types: 116 continuous, 41 integer (40 binary) Root relaxation: objective 0.000000e+00, 22 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 25.0000000 - - - 0s 0 0 0.00000 0 2 25.00000 0.00000 100% - 0s 0 0 0.00000 0 31 25.00000 0.00000 100% - 0s 0 0 0.00000 0 23 25.00000 0.00000 100% - 0s 0 2 0.00000 0 23 25.00000 0.00000 100% - 0s * 12 11 9 7.0000000 2.38462 65.9% 30.2 0s * 86 10 7 6.0000000 3.57895 40.4% 12.2 0s Cutting planes: Explored 106 nodes (1461 simplex iterations) in 0.72 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%