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 r5294 = a;
        double r5295 = b;
        double r5296 = r5294 + r5295;
        double r5297 = c;
        double r5298 = r5296 + r5297;
        double r5299 = 2.0;
        double r5300 = r5298 / r5299;
        double r5301 = r5300 - r5294;
        double r5302 = r5300 * r5301;
        double r5303 = r5300 - r5295;
        double r5304 = r5302 * r5303;
        double r5305 = r5300 - r5297;
        double r5306 = r5304 * r5305;
        double r5307 = sqrt(r5306);
        return r5307;
}