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 r13294 = a;
        double r13295 = b;
        double r13296 = r13294 + r13295;
        double r13297 = c;
        double r13298 = r13296 + r13297;
        double r13299 = 2.0;
        double r13300 = r13298 / r13299;
        double r13301 = r13300 - r13294;
        double r13302 = r13300 * r13301;
        double r13303 = r13300 - r13295;
        double r13304 = r13302 * r13303;
        double r13305 = r13300 - r13297;
        double r13306 = r13304 * r13305;
        double r13307 = sqrt(r13306);
        return r13307;
}