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Proof step 28 from proof validval-putrkvs (previous step)

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

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 25:
⊦ validrefval(str, refval(r), ty, st) ↔ validref(str, r, ty, st)
Proof step 27:
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])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_referencevalue(refval(r))])]]