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 r20972 = a;
        double r20973 = b;
        double r20974 = r20972 + r20973;
        double r20975 = c;
        double r20976 = r20974 + r20975;
        double r20977 = 2.0;
        double r20978 = r20976 / r20977;
        double r20979 = r20978 - r20972;
        double r20980 = r20978 * r20979;
        double r20981 = r20978 - r20973;
        double r20982 = r20980 * r20981;
        double r20983 = r20978 - r20975;
        double r20984 = r20982 * r20983;
        double r20985 = sqrt(r20984);
        return r20985;
}