Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:09:17 2012 Optimize a model with 22 rows, 71 columns and 71 nonzeros Model has 42 quadratic constraints Presolve removed 0 rows and 7 columns Presolve time: 0.25s Presolved: 22 rows, 64 columns, 64 nonzeros Variable types: 42 continuous, 22 integer (21 binary) Root relaxation: objective 0.000000e+00, 11 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 11.0000000 - - - 0s 0 0 0.00000 0 10 11.00000 0.00000 100% - 0s 0 0 0.00000 0 19 11.00000 0.00000 100% - 0s 0 0 0.00000 0 16 11.00000 0.00000 100% - 0s 0 2 0.00000 0 16 11.00000 0.00000 100% - 0s * 15 15 12 3.0000000 0.42857 85.7% 5.1 0s * 16 14 12 2.0000000 0.42857 78.6% 4.8 0s H 27 0 1.0000000 0.83333 16.7% 4.7 0s Cutting planes: Gomory: 2 Explored 30 nodes (262 simplex iterations) in 0.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+00, best bound 1.000000000000e+00, gap 0.0%