\[\frac{x + y}{\left(x \cdot 2\right) \cdot y}\]

\frac{x + y}{\left(x \cdot 2\right) \cdot y}

double f(double x, double y) {
        double r29039 = x;
        double r29040 = y;
        double r29041 = r29039 + r29040;
        double r29042 = 2.0;
        double r29043 = r29039 * r29042;
        double r29044 = r29043 * r29040;
        double r29045 = r29041 / r29044;
        return r29045;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019310 +o rules:numerics
(FPCore (x y)
  :name "Linear.Projection:inversePerspective from linear-1.19.1.3, C"
  :precision binary64

  :herbie-target
  (+ (/ 0.5 x) (/ 0.5 y))

  (/ (+ x y) (* (* x 2) y)))

Backtrace

argmin: contract violation expected: (and/c list? (not/c empty?)) given: '() argument position: 2nd other arguments...: #<procedure:composed>		L	C
argmin	/opt/racket-7.2/collects/racket/list.rkt	765	0
infer-splitpoints	/data/pavpan/nightlies/herbie/fix-interface-bugs/src/core/regimes.rkt	34	0
get-final-combination	/data/pavpan/nightlies/herbie/fix-interface-bugs/src/mainloop.rkt	370	0
(unnamed)	/opt/racket-7.2/collects/racket/private/more-scheme.rkt	261	28
run	/opt/racket-7.2/share/pkgs/profile-lib/main.rkt	39	2
profile-thunk16	/opt/racket-7.2/share/pkgs/profile-lib/main.rkt	9	0
(unnamed)	/opt/racket-7.2/collects/racket/private/more-scheme.rkt	261	28