Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:44 2012 Optimize a model with 60 rows, 163 columns and 163 nonzeros Model has 118 quadratic constraints Presolve removed 0 rows and 3 columns Presolve time: 0.69s Presolved: 60 rows, 160 columns, 160 nonzeros Variable types: 118 continuous, 42 integer (41 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 28.0000000 - - - 0s 0 0 0.00000 0 21 28.00000 0.00000 100% - 0s 0 0 0.00000 0 36 28.00000 0.00000 100% - 0s 0 0 0.00000 0 27 28.00000 0.00000 100% - 0s 0 2 0.00000 0 27 28.00000 0.00000 100% - 0s * 18 18 12 10.0000000 1.80000 82.0% 18.9 0s * 26 12 11 9.0000000 1.80000 80.0% 14.8 0s * 73 20 7 8.0000000 4.00000 50.0% 16.2 0s Cutting planes: Gomory: 1 Explored 145 nodes (2624 simplex iterations) in 0.75 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%