Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:08 2012 Optimize a model with 28 rows, 79 columns and 79 nonzeros Model has 54 quadratic constraints Presolve removed 0 rows and 2 columns Presolve time: 0.32s Presolved: 28 rows, 77 columns, 77 nonzeros Variable types: 54 continuous, 23 integer (22 binary) Root relaxation: objective 0.000000e+00, 11 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 10 16.00000 0.00000 100% - 0s 0 0 0.00000 0 21 16.00000 0.00000 100% - 0s 0 0 0.00000 0 20 16.00000 0.00000 100% - 0s 0 2 0.00000 0 20 16.00000 0.00000 100% - 0s * 9 9 7 4.0000000 1.80000 55.0% 10.1 0s * 22 7 4 3.0000000 1.80000 40.0% 7.0 0s Cutting planes: Explored 29 nodes (379 simplex iterations) in 0.33 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%