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 r15649 = a;
        double r15650 = b;
        double r15651 = r15649 + r15650;
        double r15652 = c;
        double r15653 = r15651 + r15652;
        double r15654 = 2.0;
        double r15655 = r15653 / r15654;
        double r15656 = r15655 - r15649;
        double r15657 = r15655 * r15656;
        double r15658 = r15655 - r15650;
        double r15659 = r15657 * r15658;
        double r15660 = r15655 - r15652;
        double r15661 = r15659 * r15660;
        double r15662 = sqrt(r15661);
        return r15662;
}