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 r18244 = a;
        double r18245 = b;
        double r18246 = r18244 + r18245;
        double r18247 = c;
        double r18248 = r18246 + r18247;
        double r18249 = 2.0;
        double r18250 = r18248 / r18249;
        double r18251 = r18250 - r18244;
        double r18252 = r18250 * r18251;
        double r18253 = r18250 - r18245;
        double r18254 = r18252 * r18253;
        double r18255 = r18250 - r18247;
        double r18256 = r18254 * r18255;
        double r18257 = sqrt(r18256);
        return r18257;
}