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 r11403 = a;
        double r11404 = b;
        double r11405 = r11403 + r11404;
        double r11406 = c;
        double r11407 = r11405 + r11406;
        double r11408 = 2.0;
        double r11409 = r11407 / r11408;
        double r11410 = r11409 - r11403;
        double r11411 = r11409 * r11410;
        double r11412 = r11409 - r11404;
        double r11413 = r11411 * r11412;
        double r11414 = r11409 - r11406;
        double r11415 = r11413 * r11414;
        double r11416 = sqrt(r11415);
        return r11416;
}