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 r18559 = a;
        double r18560 = b;
        double r18561 = r18559 + r18560;
        double r18562 = c;
        double r18563 = r18561 + r18562;
        double r18564 = 2.0;
        double r18565 = r18563 / r18564;
        double r18566 = r18565 - r18559;
        double r18567 = r18565 * r18566;
        double r18568 = r18565 - r18560;
        double r18569 = r18567 * r18568;
        double r18570 = r18565 - r18562;
        double r18571 = r18569 * r18570;
        double r18572 = sqrt(r18571);
        return r18572;
}