Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:47 2012 Optimize a model with 28 rows, 73 columns and 73 nonzeros Model has 54 quadratic constraints Presolve time: 0.32s Presolved: 28 rows, 73 columns, 73 nonzeros Variable types: 54 continuous, 19 integer (19 binary) Root relaxation: objective 0.000000e+00, 9 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 9.0000000 - - - 0s 0 0 0.00000 0 12 9.00000 0.00000 100% - 0s 0 0 0.25714 0 19 9.00000 0.25714 97.1% - 0s 0 2 0.32828 0 19 9.00000 0.32828 96.4% - 0s * 14 14 10 6.0000000 1.90909 68.2% 7.0 0s * 19 10 3 5.0000000 2.00000 60.0% 6.2 0s * 22 6 3 4.0000000 2.33333 41.7% 6.6 0s * 30 0 8 3.0000000 3.00000 0.0% 5.8 0s Cutting planes: Gomory: 4 Explored 31 nodes (355 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%