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 r5904 = a;
        double r5905 = b;
        double r5906 = r5904 + r5905;
        double r5907 = c;
        double r5908 = r5906 + r5907;
        double r5909 = 2.0;
        double r5910 = r5908 / r5909;
        double r5911 = r5910 - r5904;
        double r5912 = r5910 * r5911;
        double r5913 = r5910 - r5905;
        double r5914 = r5912 * r5913;
        double r5915 = r5910 - r5907;
        double r5916 = r5914 * r5915;
        double r5917 = sqrt(r5916);
        return r5917;
}