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 r20242 = a;
        double r20243 = b;
        double r20244 = r20242 + r20243;
        double r20245 = c;
        double r20246 = r20244 + r20245;
        double r20247 = 2.0;
        double r20248 = r20246 / r20247;
        double r20249 = r20248 - r20242;
        double r20250 = r20248 * r20249;
        double r20251 = r20248 - r20243;
        double r20252 = r20250 * r20251;
        double r20253 = r20248 - r20245;
        double r20254 = r20252 * r20253;
        double r20255 = sqrt(r20254);
        return r20255;
}