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 r20963 = a;
        double r20964 = b;
        double r20965 = r20963 + r20964;
        double r20966 = c;
        double r20967 = r20965 + r20966;
        double r20968 = 2.0;
        double r20969 = r20967 / r20968;
        double r20970 = r20969 - r20963;
        double r20971 = r20969 * r20970;
        double r20972 = r20969 - r20964;
        double r20973 = r20971 * r20972;
        double r20974 = r20969 - r20966;
        double r20975 = r20973 * r20974;
        double r20976 = sqrt(r20975);
        return r20976;
}