Cannot sample enough valid points. (more)

\[0.0 \lt a \land 0.0 \lt b \land 0.0 \lt c\]
\[\sqrt{\left(\left(\frac{\left(a + b\right) + c}{2} \cdot \left(\frac{\left(a + b\right) + c}{2} - a\right)\right) \cdot \left(\frac{\left(a + b\right) + c}{2} - b\right)\right) \cdot \left(\frac{\left(a + b\right) + c}{2} - c\right)}\]
\sqrt{\left(\left(\frac{\left(a + b\right) + c}{2} \cdot \left(\frac{\left(a + b\right) + c}{2} - a\right)\right) \cdot \left(\frac{\left(a + b\right) + c}{2} - b\right)\right) \cdot \left(\frac{\left(a + b\right) + c}{2} - c\right)}
double f(double a, double b, double c) {
        double r17683 = a;
        double r17684 = b;
        double r17685 = r17683 + r17684;
        double r17686 = c;
        double r17687 = r17685 + r17686;
        double r17688 = 2.0;
        double r17689 = r17687 / r17688;
        double r17690 = r17689 - r17683;
        double r17691 = r17689 * r17690;
        double r17692 = r17689 - r17684;
        double r17693 = r17691 * r17692;
        double r17694 = r17689 - r17686;
        double r17695 = r17693 * r17694;
        double r17696 = sqrt(r17695);
        return r17696;
}