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 r172952 = a;
        double r172953 = b;
        double r172954 = r172952 + r172953;
        double r172955 = c;
        double r172956 = r172954 + r172955;
        double r172957 = 2.0;
        double r172958 = r172956 / r172957;
        double r172959 = r172958 - r172952;
        double r172960 = r172958 * r172959;
        double r172961 = r172958 - r172953;
        double r172962 = r172960 * r172961;
        double r172963 = r172958 - r172955;
        double r172964 = r172962 * r172963;
        double r172965 = sqrt(r172964);
        return r172965;
}