Timeout in 10.0m

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\[\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(z - 1\right) + 7\right) + 0.5\right)}^{\left(\left(z - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(z - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(z - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(z - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(z - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(z - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(z - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(z - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-06}}{\left(z - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-07}}{\left(z - 1\right) + 8}\right)\]
\left(\left(\sqrt{\pi \cdot 2} \cdot {\left(\left(\left(z - 1\right) + 7\right) + 0.5\right)}^{\left(\left(z - 1\right) + 0.5\right)}\right) \cdot e^{-\left(\left(\left(z - 1\right) + 7\right) + 0.5\right)}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{\left(z - 1\right) + 1}\right) + \frac{-1259.1392167224028}{\left(z - 1\right) + 2}\right) + \frac{771.3234287776531}{\left(z - 1\right) + 3}\right) + \frac{-176.6150291621406}{\left(z - 1\right) + 4}\right) + \frac{12.507343278686905}{\left(z - 1\right) + 5}\right) + \frac{-0.13857109526572012}{\left(z - 1\right) + 6}\right) + \frac{9.984369578019572 \cdot 10^{-06}}{\left(z - 1\right) + 7}\right) + \frac{1.5056327351493116 \cdot 10^{-07}}{\left(z - 1\right) + 8}\right)
double f(double z) {
        double r143533771 = atan2(1.0, 0.0);
        double r143533772 = 2.0;
        double r143533773 = r143533771 * r143533772;
        double r143533774 = sqrt(r143533773);
        double r143533775 = z;
        double r143533776 = 1.0;
        double r143533777 = r143533775 - r143533776;
        double r143533778 = 7.0;
        double r143533779 = r143533777 + r143533778;
        double r143533780 = 0.5;
        double r143533781 = r143533779 + r143533780;
        double r143533782 = r143533777 + r143533780;
        double r143533783 = pow(r143533781, r143533782);
        double r143533784 = r143533774 * r143533783;
        double r143533785 = -r143533781;
        double r143533786 = exp(r143533785);
        double r143533787 = r143533784 * r143533786;
        double r143533788 = 0.9999999999998099;
        double r143533789 = 676.5203681218851;
        double r143533790 = r143533777 + r143533776;
        double r143533791 = r143533789 / r143533790;
        double r143533792 = r143533788 + r143533791;
        double r143533793 = -1259.1392167224028;
        double r143533794 = r143533777 + r143533772;
        double r143533795 = r143533793 / r143533794;
        double r143533796 = r143533792 + r143533795;
        double r143533797 = 771.3234287776531;
        double r143533798 = 3.0;
        double r143533799 = r143533777 + r143533798;
        double r143533800 = r143533797 / r143533799;
        double r143533801 = r143533796 + r143533800;
        double r143533802 = -176.6150291621406;
        double r143533803 = 4.0;
        double r143533804 = r143533777 + r143533803;
        double r143533805 = r143533802 / r143533804;
        double r143533806 = r143533801 + r143533805;
        double r143533807 = 12.507343278686905;
        double r143533808 = 5.0;
        double r143533809 = r143533777 + r143533808;
        double r143533810 = r143533807 / r143533809;
        double r143533811 = r143533806 + r143533810;
        double r143533812 = -0.13857109526572012;
        double r143533813 = 6.0;
        double r143533814 = r143533777 + r143533813;
        double r143533815 = r143533812 / r143533814;
        double r143533816 = r143533811 + r143533815;
        double r143533817 = 9.984369578019572e-06;
        double r143533818 = r143533817 / r143533779;
        double r143533819 = r143533816 + r143533818;
        double r143533820 = 1.5056327351493116e-07;
        double r143533821 = 8.0;
        double r143533822 = r143533777 + r143533821;
        double r143533823 = r143533820 / r143533822;
        double r143533824 = r143533819 + r143533823;
        double r143533825 = r143533787 * r143533824;
        return r143533825;
}

Reproduce

herbie shell --seed 2019124 
(FPCore (z)
  :name "Jmat.Real.gamma, branch z greater than 0.5"
  (* (* (* (sqrt (* PI 2)) (pow (+ (+ (- z 1) 7) 0.5) (+ (- z 1) 0.5))) (exp (- (+ (+ (- z 1) 7) 0.5)))) (+ (+ (+ (+ (+ (+ (+ (+ 0.9999999999998099 (/ 676.5203681218851 (+ (- z 1) 1))) (/ -1259.1392167224028 (+ (- z 1) 2))) (/ 771.3234287776531 (+ (- z 1) 3))) (/ -176.6150291621406 (+ (- z 1) 4))) (/ 12.507343278686905 (+ (- z 1) 5))) (/ -0.13857109526572012 (+ (- z 1) 6))) (/ 9.984369578019572e-06 (+ (- z 1) 7))) (/ 1.5056327351493116e-07 (+ (- z 1) 8)))))