  Iteration  Func-count      f(x)      Lambda
      0          1           15150    
      1          3         14366.9       10
      2          5         14366.9        5
      3          6         14366.9       20
      4          7         14366.9       80
      5          8         13860.1      320
      6         10         13859.9      320
      7         12         13449.3      160
      8         14         13274.3      160
      9         16         13257.4       80
     10         18           13254       40
     11         20         13253.7       20
     12         22         13253.6       10
     13         24         13253.4        5
     14         26         13253.4      2.5
     15         28         13253.4     1.25
 TolX reached. Func-count 28. Final f(x)=13253.4. Elapsed time 3338.85
Proportion of non-zeros is 0.0475

 gp hyperparameters: 
 
    2.7497    1.1142    1.4814    1.3157

Demo completed in 55.722 minutes
