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 r18633 = a;
        double r18634 = b;
        double r18635 = r18633 + r18634;
        double r18636 = c;
        double r18637 = r18635 + r18636;
        double r18638 = 2.0;
        double r18639 = r18637 / r18638;
        double r18640 = r18639 - r18633;
        double r18641 = r18639 * r18640;
        double r18642 = r18639 - r18634;
        double r18643 = r18641 * r18642;
        double r18644 = r18639 - r18636;
        double r18645 = r18643 * r18644;
        double r18646 = sqrt(r18645);
        return r18646;
}