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Proof step 14 from proof cyclic-delete (previous step)

cyclic(str, r, st -- r0) ⊦ cyclic(str, r, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ cyclic(str, r, st) ↔ (∃ refs. dups(refs) ∧ refs .first = r ∧ validrefs(str, refs, st[r -- _type] .type, st))
Proof step 13:
∃ refs. dups(refs) ∧ refs .first = r ∧ validrefs(str, refs, (st -- r0)[r -- _type] .type, st -- r0) ⊦ cyclic(str, r, st)

Rule argument

[crewrite-arg: cyclic-def-simple , F , [st, r, str] → [st -- r0, r, str] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st -- r0, r, str)]]