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 r10212157 = 1.0;
        double r10212158 = s;
        double r10212159 = -r10212158;
        double r10212160 = exp(r10212159);
        double r10212161 = r10212157 + r10212160;
        double r10212162 = r10212157 / r10212161;
        double r10212163 = c_p;
        double r10212164 = pow(r10212162, r10212163);
        double r10212165 = r10212157 - r10212162;
        double r10212166 = c_n;
        double r10212167 = pow(r10212165, r10212166);
        double r10212168 = r10212164 * r10212167;
        double r10212169 = t;
        double r10212170 = -r10212169;
        double r10212171 = exp(r10212170);
        double r10212172 = r10212157 + r10212171;
        double r10212173 = r10212157 / r10212172;
        double r10212174 = pow(r10212173, r10212163);
        double r10212175 = r10212157 - r10212173;
        double r10212176 = pow(r10212175, r10212166);
        double r10212177 = r10212174 * r10212176;
        double r10212178 = r10212168 / r10212177;
        return r10212178;
}

Reproduce

herbie shell --seed 2019158 
(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))))