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 r3638 = a;
        double r3639 = b;
        double r3640 = r3638 + r3639;
        double r3641 = c;
        double r3642 = r3640 + r3641;
        double r3643 = 2.0;
        double r3644 = r3642 / r3643;
        double r3645 = r3644 - r3638;
        double r3646 = r3644 * r3645;
        double r3647 = r3644 - r3639;
        double r3648 = r3646 * r3647;
        double r3649 = r3644 - r3641;
        double r3650 = r3648 * r3649;
        double r3651 = sqrt(r3650);
        return r3651;
}