 Iteration  Func-count   Grad-count         f(x)         Step-size
     0           1           1              621.31    
     1           2           2             419.233      0.00442489
     2           7           7             304.067        0.011875
     3          10          10             224.226         0.23565
     4          14          14             181.318         0.00625
     5          18          18             162.607       0.0519188
     6          20          20             153.013         0.40472
     7          23          23             142.123        0.124208
     8          25          25             137.704        0.436747
     9          27          27             134.033        0.472882
    10          29          29             132.053        0.228239
    11          31          31             131.375        0.412029
    12          32          32             130.964               1
    13          33          33             130.872               1
    14          34          34             130.833               1
    15          35          35             130.827               1
    16          36          36             130.827               1
    17          37          37             130.827               1
    18          38          38             130.826               1
    19          39          39             130.826               1
 Optimizer Results
  Algorithm Used: Broyden-Fletcher-Goldfarb-Shanno (BFGS)
  Exit message : Change in x was smaller than the specified tolerance TolX.
  Iterations : 20
  Function Count : 40
  Minimum found : 130.8265
  Intern Time : 0.23871 seconds
  Total Time : 349.7141 seconds

 gp hyperparameters: 
 
    7.4345    3.2174    1.9601    0.3056    4.9391   -1.6257   -0.7279   -3.1561

Demo completed in 5.920 minutes
