Tree matching theorem for parse-bin/dec/hex-val.
Theorem:
(defthm tree-match-of-parse-bin/dec/hex-val (b* (((mv error? tree? &) (parse-bin/dec/hex-val input))) (implies (and (not error?) (equal element (!_ (/_ *bin-val*) (/_ *dec-val*) (/_ *hex-val*)))) (tree-match-element-p tree? element *grammar*))))