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 r3101 = a;
        double r3102 = b;
        double r3103 = r3101 + r3102;
        double r3104 = c;
        double r3105 = r3103 + r3104;
        double r3106 = 2.0;
        double r3107 = r3105 / r3106;
        double r3108 = r3107 - r3101;
        double r3109 = r3107 * r3108;
        double r3110 = r3107 - r3102;
        double r3111 = r3109 * r3110;
        double r3112 = r3107 - r3104;
        double r3113 = r3111 * r3112;
        double r3114 = sqrt(r3113);
        return r3114;
}