Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:53 2012 Optimize a model with 40 rows, 110 columns and 110 nonzeros Model has 78 quadratic constraints Presolve removed 0 rows and 3 columns Presolve time: 0.45s Presolved: 40 rows, 107 columns, 107 nonzeros Variable types: 78 continuous, 29 integer (28 binary) Root relaxation: objective 0.000000e+00, 16 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 18 16.00000 0.00000 100% - 0s 0 0 0.00000 0 24 16.00000 0.00000 100% - 0s 0 0 0.00000 0 24 16.00000 0.00000 100% - 0s 0 2 0.00000 0 24 16.00000 0.00000 100% - 0s * 17 15 12 6.0000000 1.05882 82.4% 16.8 0s * 29 13 8 5.0000000 1.12500 77.5% 15.3 0s * 34 9 13 4.0000000 1.12500 71.9% 13.5 0s Cutting planes: Gomory: 1 Explored 58 nodes (985 simplex iterations) in 0.48 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%