fact: Definition s_0 : ty := mk_ty [arr' [symbol 0] star; arr' [symbol 0] hash; arr' [symbol 1] dollar].
imports: Undecidability.IntersectionTypes.CD Undecidability.IntersectionTypes.Util.CD_facts Undecidability.StringRewriting.SSTS Undecidability.LambdaCalculus.Util.term_facts Relations List PeanoNat Lia ssreflect ssrfun