Timeout in 10.0m

Use the --timeout flag to change the timeout.

\[0 \lt c_p \land 0 \lt c_n\]
\[\frac{{\left(\frac{1}{1 + e^{-s}}\right)}^{c_p} \cdot {\left(1 - \frac{1}{1 + e^{-s}}\right)}^{c_n}}{{\left(\frac{1}{1 + e^{-t}}\right)}^{c_p} \cdot {\left(1 - \frac{1}{1 + e^{-t}}\right)}^{c_n}}\]
\frac{{\left(\frac{1}{1 + e^{-s}}\right)}^{c_p} \cdot {\left(1 - \frac{1}{1 + e^{-s}}\right)}^{c_n}}{{\left(\frac{1}{1 + e^{-t}}\right)}^{c_p} \cdot {\left(1 - \frac{1}{1 + e^{-t}}\right)}^{c_n}}
double f(double c_p, double c_n, double t, double s) {
        double r8334162 = 1.0;
        double r8334163 = s;
        double r8334164 = -r8334163;
        double r8334165 = exp(r8334164);
        double r8334166 = r8334162 + r8334165;
        double r8334167 = r8334162 / r8334166;
        double r8334168 = c_p;
        double r8334169 = pow(r8334167, r8334168);
        double r8334170 = r8334162 - r8334167;
        double r8334171 = c_n;
        double r8334172 = pow(r8334170, r8334171);
        double r8334173 = r8334169 * r8334172;
        double r8334174 = t;
        double r8334175 = -r8334174;
        double r8334176 = exp(r8334175);
        double r8334177 = r8334162 + r8334176;
        double r8334178 = r8334162 / r8334177;
        double r8334179 = pow(r8334178, r8334168);
        double r8334180 = r8334162 - r8334178;
        double r8334181 = pow(r8334180, r8334171);
        double r8334182 = r8334179 * r8334181;
        double r8334183 = r8334173 / r8334182;
        return r8334183;
}

Reproduce

herbie shell --seed 2019133 
(FPCore (c_p c_n t s)
  :name "Harley's example"
  :pre (and (< 0 c_p) (< 0 c_n))

  :herbie-target
  (* (pow (/ (+ 1 (exp (- t))) (+ 1 (exp (- s)))) c_p) (pow (/ (+ 1 (exp t)) (+ 1 (exp s))) c_n))

  (/ (* (pow (/ 1 (+ 1 (exp (- s)))) c_p) (pow (- 1 (/ 1 (+ 1 (exp (- s))))) c_n)) (* (pow (/ 1 (+ 1 (exp (- t)))) c_p) (pow (- 1 (/ 1 (+ 1 (exp (- t))))) c_n))))