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Proof step 27 from proof validval-putrkvs (previous step)

sk .fs = mkfs(class, ty, fieldvar), is_indexkey(sk), validvals(str, rkvs, st), okval(refval(r0), st[r -- _type] .type .type), validref(str, r0, st[r -- _type] .type .type, st) ⊦ validref(str, r0, st[r -- _type] .type .type, st[rkvs])

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 26:
⊦ validvals(str, rkvs, st) ∧ validref(str, r, ty, st) → validref(str, r, ty, st[rkvs])

Rule argument

[crewrite-arg: validref-putrkvs , F , [rkvs, st, ty, r, str] → [rkvs, st, st[r -- _type] .type .type, r0, str] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (rkvs, st, st[r -- _type] .type .type, r0, str)]]