Exception for cos2 (problem 3.4.1)

Specification

Math

\[\begin{array}{l} \\ \frac{1 - \cos x}{x \cdot x} \end{array} \]

FPCore

(FPCore (x) :precision binary64 (/ (- 1.0 (cos x)) (* x x)))

C

double code(double x) {
	return (1.0 - cos(x)) / (x * x);
}

Fortran

real(8) function code(x)
    real(8), intent (in) :: x
    code = (1.0d0 - cos(x)) / (x * x)
end function

Java

public static double code(double x) {
	return (1.0 - Math.cos(x)) / (x * x);
}

Python

def code(x):
	return (1.0 - math.cos(x)) / (x * x)

Julia

function code(x)
	return Float64(Float64(1.0 - cos(x)) / Float64(x * x))
end

MATLAB

function tmp = code(x)
	tmp = (1.0 - cos(x)) / (x * x);
end

Wolfram

code[x_] := N[(N[(1.0 - N[Cos[x], $MachinePrecision]), $MachinePrecision] / N[(x * x), $MachinePrecision]), $MachinePrecision]

Reproduce

herbie shell --seed 2024283 
(FPCore (x)
  :name "cos2 (problem 3.4.1)"
  :precision binary64
  (/ (- 1.0 (cos x)) (* x x)))

Please file a bug report with this information.

Backtrace

eprintf: format string requires 0 arguments, given 1; arguments were: '(#s(si 8 3) #s(si 0 4))		L	C
err-lsts->split-indices	/home/nightlies/herbie/zane-regimes-old/src/core/regimes.rkt	219	0
option-on-expr	/home/nightlies/herbie/zane-regimes-old/src/core/regimes.rkt	120	0
infer-splitpoints	/home/nightlies/herbie/zane-regimes-old/src/core/regimes.rkt	56	0
loop	/home/nightlies/herbie/zane-regimes-old/src/core/regimes.rkt	41	2
make-regime!	/home/nightlies/herbie/zane-regimes-old/src/core/mainloop.rkt	350	0
extract!	/home/nightlies/herbie/zane-regimes-old/src/core/mainloop.rkt	79	0
run-improve!	/home/nightlies/herbie/zane-regimes-old/src/core/mainloop.rkt	45	0
get-alternatives/report	/home/nightlies/herbie/zane-regimes-old/src/api/sandbox.rkt	186	0
(unnamed)	/home/nightlies/herbie/zane-regimes-old/src/api/sandbox.rkt	282	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