?

\[\left(\left(\left(x + x\right) + x\right) + x\right) + x \]

(FPCore (x) :precision binary64 (+ (+ (+ (+ x x) x) x) x))

double code(double x) {
	return (((x + x) + x) + x) + x;
}

real(8) function code(x)
    real(8), intent (in) :: x
    code = (((x + x) + x) + x) + x
end function

public static double code(double x) {
	return (((x + x) + x) + x) + x;
}

def code(x):
	return (((x + x) + x) + x) + x

function code(x)
	return Float64(Float64(Float64(Float64(x + x) + x) + x) + x)
end

function tmp = code(x)
	tmp = (((x + x) + x) + x) + x;
end

code[x_] := N[(N[(N[(N[(x + x), $MachinePrecision] + x), $MachinePrecision] + x), $MachinePrecision] + x), $MachinePrecision]

\left(\left(\left(x + x\right) + x\right) + x\right) + x

Reproduce?

Please include this information when filing a bug report:

herbie shell --seed 2023241 
(FPCore (x)
  :name "Main:i from "
  :precision binary64
  (+ (+ (+ (+ x x) x) x) x))

match: no matching clause for 'ival		L	C
compile-progs	/home/nightlies/herbie/arb-support/src/programs.rkt	122	0
make-search-func	/home/nightlies/herbie/arb-support/src/ground-truth.rkt	20	0
sample-points	/home/nightlies/herbie/arb-support/src/ground-truth.rkt	64	0
setup-context!	/home/nightlies/herbie/arb-support/src/mainloop.rkt	293	0
get-alternatives/report	/home/nightlies/herbie/arb-support/src/sandbox.rkt	148	0
(unnamed)	/home/nightlies/herbie/arb-support/src/sandbox.rkt	247	6
(unnamed)	/usr/share/racket/pkgs/profile-lib/main.rkt	40	10
profile-thunk	/usr/share/racket/pkgs/profile-lib/main.rkt	9	0
(unnamed)	/usr/share/racket/collects/racket/engine.rkt	42	24