Cannot sample enough valid points. (more)

\[\sqrt{{\left(\sqrt{{\left(\sqrt{x \cdot y}\right)}^{2} \cdot z}\right)}^{3} \cdot w}\]
\sqrt{{\left(\sqrt{{\left(\sqrt{x \cdot y}\right)}^{2} \cdot z}\right)}^{3} \cdot w}
double code(double x, double y, double z, double w) {
	return ((double) sqrt(((double) (((double) pow(((double) sqrt(((double) (((double) pow(((double) sqrt(((double) (x * y)))), 2.0)) * z)))), 3.0)) * w))));
}

Reproduce

herbie shell --seed 2020152 
(FPCore (x y z w)
  :name "(sqrt (* (pow (sqrt (* (pow (sqrt (* x y)) 2) z)) 3) w))"
  :precision binary64
  (sqrt (* (pow (sqrt (* (pow (sqrt (* x y)) 2.0) z)) 3.0) w)))