Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:46 2012 Optimize a model with 24 rows, 65 columns and 65 nonzeros Model has 46 quadratic constraints Presolve removed 0 rows and 3 columns Presolve time: 0.27s Presolved: 24 rows, 62 columns, 62 nonzeros Variable types: 46 continuous, 16 integer (15 binary) Root relaxation: objective 0.000000e+00, 9 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 12.0000000 - - - 0s 0 0 0.00000 0 4 12.00000 0.00000 100% - 0s 0 0 0.00000 0 13 12.00000 0.00000 100% - 0s 0 0 0.00000 0 13 12.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 2 0.00000 0 13 10.00000 0.00000 100% - 0s * 9 9 7 7.0000000 2.18182 68.8% 12.4 0s * 23 6 4 6.0000000 2.33333 61.1% 7.0 0s * 30 4 3 4.0000000 3.33333 16.7% 6.4 0s Cutting planes: Explored 36 nodes (342 simplex iterations) in 0.28 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%