Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:20 2012 Optimize a model with 45 rows, 130 columns and 130 nonzeros Model has 88 quadratic constraints Presolve removed 0 rows and 4 columns Presolve time: 0.51s Presolved: 45 rows, 126 columns, 126 nonzeros Variable types: 88 continuous, 38 integer (37 binary) Root relaxation: objective 0.000000e+00, 19 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 21.0000000 - - - 0s 0 0 0.00000 0 2 21.00000 0.00000 100% - 0s 0 0 0.00000 0 10 21.00000 0.00000 100% - 0s 0 0 0.00000 0 25 21.00000 0.00000 100% - 0s 0 2 0.00000 0 18 21.00000 0.00000 100% - 0s * 11 11 8 6.0000000 1.18182 80.3% 22.1 0s * 16 10 11 5.0000000 1.18182 76.4% 17.0 0s * 21 10 5 4.0000000 1.66667 58.3% 15.6 0s Cutting planes: Explored 45 nodes (733 simplex iterations) in 0.54 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%