Timeout in 10.0m

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\[\alpha \gt -1 \land \beta \gt -1\]
\[\frac{\frac{\frac{\left(\left(\alpha + \beta\right) + \beta \cdot \alpha\right) + 1.0}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1.0}\]
\frac{\frac{\frac{\left(\left(\alpha + \beta\right) + \beta \cdot \alpha\right) + 1.0}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1.0}
double f(double alpha, double beta) {
        double r4122986 = alpha;
        double r4122987 = beta;
        double r4122988 = r4122986 + r4122987;
        double r4122989 = r4122987 * r4122986;
        double r4122990 = r4122988 + r4122989;
        double r4122991 = 1.0;
        double r4122992 = r4122990 + r4122991;
        double r4122993 = 2.0;
        double r4122994 = 1.0;
        double r4122995 = r4122993 * r4122994;
        double r4122996 = r4122988 + r4122995;
        double r4122997 = r4122992 / r4122996;
        double r4122998 = r4122997 / r4122996;
        double r4122999 = r4122996 + r4122991;
        double r4123000 = r4122998 / r4122999;
        return r4123000;
}

Reproduce

herbie shell --seed 2019132 
(FPCore (alpha beta)
  :name "Octave 3.8, jcobi/3"
  :pre (and (> alpha -1) (> beta -1))
  (/ (/ (/ (+ (+ (+ alpha beta) (* beta alpha)) 1.0) (+ (+ alpha beta) (* 2 1))) (+ (+ alpha beta) (* 2 1))) (+ (+ (+ alpha beta) (* 2 1)) 1.0)))