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 r177 = a;
        double r178 = b;
        double r179 = r177 + r178;
        double r180 = c;
        double r181 = r179 + r180;
        double r182 = 2.0;
        double r183 = r181 / r182;
        double r184 = r183 - r177;
        double r185 = r183 * r184;
        double r186 = r183 - r178;
        double r187 = r185 * r186;
        double r188 = r183 - r180;
        double r189 = r187 * r188;
        double r190 = sqrt(r189);
        return r190;
}