Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:43 2012 Optimize a model with 46 rows, 106 columns and 106 nonzeros Model has 90 quadratic constraints Presolve time: 0.52s Presolved: 46 rows, 106 columns, 106 nonzeros Variable types: 90 continuous, 16 integer (16 binary) Root relaxation: objective 0.000000e+00, 8 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 13 21.00000 0.00000 100% - 0s 0 0 0.37778 0 15 21.00000 0.37778 98.2% - 0s 0 2 0.41667 0 15 21.00000 0.41667 98.0% - 0s * 20 20 12 20.0000000 2.66667 86.7% 12.3 0s * 24 18 13 19.0000000 2.66667 86.0% 10.8 0s * 37 27 9 16.0000000 2.85714 82.1% 10.6 0s H 51 30 15.0000000 4.20871 71.9% 11.3 0s Cutting planes: Gomory: 1 Explored 218 nodes (2384 simplex iterations) in 0.58 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000026e+01, best bound 1.500000000026e+01, gap 0.0%