?

\[\frac{x}{1 + \sqrt{x + 1}} \]
(FPCore (x) :precision binary64 (/ x (+ 1.0 (sqrt (+ x 1.0)))))
double code(double x) {
	return x / (1.0 + sqrt((x + 1.0)));
}
real(8) function code(x)
    real(8), intent (in) :: x
    code = x / (1.0d0 + sqrt((x + 1.0d0)))
end function
public static double code(double x) {
	return x / (1.0 + Math.sqrt((x + 1.0)));
}
def code(x):
	return x / (1.0 + math.sqrt((x + 1.0)))
function code(x)
	return Float64(x / Float64(1.0 + sqrt(Float64(x + 1.0))))
end
function tmp = code(x)
	tmp = x / (1.0 + sqrt((x + 1.0)));
end
code[x_] := N[(x / N[(1.0 + N[Sqrt[N[(x + 1.0), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\frac{x}{1 + \sqrt{x + 1}}

Reproduce?

Please include this information when filing a bug report:

herbie shell --seed 2023098 
(FPCore (x)
  :name "Numeric.Log:$clog1p from log-domain-0.10.2.1, B"
  :precision binary64
  (/ x (+ 1.0 (sqrt (+ x 1.0)))))

Backtrace

hash-ref: no value found for key key: 'falseLC
(unnamed)/home/nightlies/herbie/using-ruler-nightlies/src/syntax/syntax.rkt2302
f336.../match/compiler.rkt54840
expand-parametric/home/nightlies/herbie/using-ruler-nightlies/src/syntax/sugar.rkt620
(unnamed)/home/nightlies/herbie/using-ruler-nightlies/src/core/egg-herbie.rkt2559
rule->egg-rules/home/nightlies/herbie/using-ruler-nightlies/src/core/egg-herbie.rkt2240
expand-rules/home/nightlies/herbie/using-ruler-nightlies/src/core/egg-herbie.rkt4880
egraph-run-rules/home/nightlies/herbie/using-ruler-nightlies/src/core/egg-herbie.rkt5090
(unnamed)/home/nightlies/herbie/using-ruler-nightlies/src/core/simplify.rkt583
with-egraph/home/nightlies/herbie/using-ruler-nightlies/src/core/egg-herbie.rkt3330
simplify-batch/home/nightlies/herbie/using-ruler-nightlies/src/core/simplify.rkt230
(unnamed)/usr/share/racket/collects/racket/contract/private/arrow-higher-order.rkt37933
get-swaps/home/nightlies/herbie/using-ruler-nightlies/src/symmetry.rkt60
connected-components/home/nightlies/herbie/using-ruler-nightlies/src/symmetry.rkt180
run-improve!/home/nightlies/herbie/using-ruler-nightlies/src/mainloop.rkt3200
run-herbie/home/nightlies/herbie/using-ruler-nightlies/src/sandbox.rkt570
(unnamed)/home/nightlies/herbie/using-ruler-nightlies/src/sandbox.rkt1336
(unnamed)/usr/share/racket/pkgs/profile-lib/main.rkt4010
profile-thunk/usr/share/racket/pkgs/profile-lib/main.rkt90
(unnamed)/usr/share/racket/collects/racket/engine.rkt4224