Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:09:40 2012 Optimize a model with 29 rows, 91 columns and 91 nonzeros Model has 56 quadratic constraints Presolve removed 0 rows and 7 columns Presolve time: 0.33s Presolved: 29 rows, 84 columns, 84 nonzeros Variable types: 56 continuous, 28 integer (27 binary) Root relaxation: objective 0.000000e+00, 13 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 16.0000000 - - - 0s 0 0 0.00000 0 2 16.00000 0.00000 100% - 0s 0 0 0.00000 0 7 16.00000 0.00000 100% - 0s 0 0 0.00000 0 10 16.00000 0.00000 100% - 0s 0 2 0.00000 0 20 16.00000 0.00000 100% - 0s * 8 8 6 3.0000000 0.33333 88.9% 20.6 0s * 20 4 4 2.0000000 1.11111 44.4% 11.0 0s Cutting planes: Explored 27 nodes (411 simplex iterations) in 0.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%