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 r2987 = a;
        double r2988 = b;
        double r2989 = r2987 + r2988;
        double r2990 = c;
        double r2991 = r2989 + r2990;
        double r2992 = 2.0;
        double r2993 = r2991 / r2992;
        double r2994 = r2993 - r2987;
        double r2995 = r2993 * r2994;
        double r2996 = r2993 - r2988;
        double r2997 = r2995 * r2996;
        double r2998 = r2993 - r2990;
        double r2999 = r2997 * r2998;
        double r3000 = sqrt(r2999);
        return r3000;
}