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 r23025 = a;
        double r23026 = b;
        double r23027 = r23025 + r23026;
        double r23028 = c;
        double r23029 = r23027 + r23028;
        double r23030 = 2.0;
        double r23031 = r23029 / r23030;
        double r23032 = r23031 - r23025;
        double r23033 = r23031 * r23032;
        double r23034 = r23031 - r23026;
        double r23035 = r23033 * r23034;
        double r23036 = r23031 - r23028;
        double r23037 = r23035 * r23036;
        double r23038 = sqrt(r23037);
        return r23038;
}