Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:56 2012 Optimize a model with 26 rows, 72 columns and 72 nonzeros Model has 50 quadratic constraints Presolve removed 0 rows and 1 columns Presolve time: 0.29s Presolved: 26 rows, 71 columns, 71 nonzeros Variable types: 50 continuous, 21 integer (20 binary) Root relaxation: objective 0.000000e+00, 10 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 17.0000000 - - - 0s 0 0 0.00000 0 9 17.00000 0.00000 100% - 0s 0 0 0.00000 0 19 17.00000 0.00000 100% - 0s 0 0 0.00000 0 19 17.00000 0.00000 100% - 0s 0 2 0.00000 0 19 17.00000 0.00000 100% - 0s * 5 5 3 4.0000000 2.00000 50.0% 20.0 0s * 21 3 5 3.0000000 2.33333 22.2% 8.9 0s Cutting planes: Explored 29 nodes (401 simplex iterations) in 0.31 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%