Timeout in 10.0m

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\[\lambda_1 + \tan^{-1}_* \frac{\left(\sin theta \cdot \sin delta\right) \cdot \cos \phi_1}{\cos delta - \sin \phi_1 \cdot \sin \left(\sin^{-1} \left(\sin \phi_1 \cdot \cos delta + \left(\cos \phi_1 \cdot \sin delta\right) \cdot \cos theta\right)\right)}\]
\lambda_1 + \tan^{-1}_* \frac{\left(\sin theta \cdot \sin delta\right) \cdot \cos \phi_1}{\cos delta - \sin \phi_1 \cdot \sin \left(\sin^{-1} \left(\sin \phi_1 \cdot \cos delta + \left(\cos \phi_1 \cdot \sin delta\right) \cdot \cos theta\right)\right)}
double f(double lambda1, double phi1, double __attribute__((unused)) phi2, double delta, double theta) {
        double r9284209 = lambda1;
        double r9284210 = theta;
        double r9284211 = sin(r9284210);
        double r9284212 = delta;
        double r9284213 = sin(r9284212);
        double r9284214 = r9284211 * r9284213;
        double r9284215 = phi1;
        double r9284216 = cos(r9284215);
        double r9284217 = r9284214 * r9284216;
        double r9284218 = cos(r9284212);
        double r9284219 = sin(r9284215);
        double r9284220 = r9284219 * r9284218;
        double r9284221 = r9284216 * r9284213;
        double r9284222 = cos(r9284210);
        double r9284223 = r9284221 * r9284222;
        double r9284224 = r9284220 + r9284223;
        double r9284225 = asin(r9284224);
        double r9284226 = sin(r9284225);
        double r9284227 = r9284219 * r9284226;
        double r9284228 = r9284218 - r9284227;
        double r9284229 = atan2(r9284217, r9284228);
        double r9284230 = r9284209 + r9284229;
        return r9284230;
}

Reproduce

herbie shell --seed 2019120 
(FPCore (lambda1 phi1 phi2 delta theta)
  :name "Destination given bearing on a great circle"
  (+ lambda1 (atan2 (* (* (sin theta) (sin delta)) (cos phi1)) (- (cos delta) (* (sin phi1) (sin (asin (+ (* (sin phi1) (cos delta)) (* (* (cos phi1) (sin delta)) (cos theta))))))))))