Exception for math.square on complex, real part

Math

\[\left(re \cdot re\right) - \left(im \cdot im\right)\]

C

double f(double re, double im) {
        double r2242525 = re;
        double r2242526 = r2242525 * r2242525;
        double r2242527 = im;
        double r2242528 = r2242527 * r2242527;
        double r2242529 = r2242526 - r2242528;
        return r2242529;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 0 
(FPCore (re im)
  :name "math.square on complex, real part"
  (-.p16 (*.p16 re re) (*.p16 im im)))

Backtrace

hash-ref: no value found for key key: '(#<cpointer:posit16> #<cpointer:posit16>)		L	C
best-and-tied-at-points	/home/p92/nightlies/herbie/optional-posits/src/core/alt-table.rkt	117	0
atab-add-altn	/home/p92/nightlies/herbie/optional-posits/src/core/alt-table.rkt	202	0
for-loop	/home/p92/nightlies/herbie/optional-posits/src/core/alt-table.rkt	56	2
(unnamed)	/opt/racket-7.0/collects/racket/contract/private/arrow-val-first.rkt	388	18
finalize-iter!	/home/p92/nightlies/herbie/optional-posits/src/mainloop.rkt	272	0
run-improve43	/home/p92/nightlies/herbie/optional-posits/src/mainloop.rkt	340	0
(unnamed)	/opt/racket-7.0/collects/racket/private/more-scheme.rkt	261	28
(unnamed)	/opt/racket-7.0/collects/racket/private/more-scheme.rkt	261	28