Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:34 2012 Optimize a model with 51 rows, 150 columns and 150 nonzeros Model has 100 quadratic constraints Presolve removed 0 rows and 11 columns Presolve time: 0.58s Presolved: 51 rows, 139 columns, 139 nonzeros Variable types: 100 continuous, 39 integer (38 binary) Root relaxation: objective 0.000000e+00, 21 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 25.0000000 - - - 0s 0 0 0.00000 0 30 25.00000 0.00000 100% - 0s 0 0 0.04903 0 38 25.00000 0.04903 100% - 0s 0 2 0.21204 0 38 25.00000 0.21204 99.2% - 0s H 8 8 10.0000000 2.16667 78.3% 18.2 0s * 10 10 7 7.0000000 2.16667 69.0% 16.8 0s * 14 11 10 6.0000000 2.16667 63.9% 12.4 0s * 22 2 3 4.0000000 3.30769 17.3% 15.4 0s Cutting planes: Gomory: 2 Explored 25 nodes (773 simplex iterations) in 0.62 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%