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Proof step 8 from proof validfield-levelsubset (previous step)

sk .fs = mkfs(class, ty, fieldvar), level⊆(str, str0), goodfieldandtype(r, sk, st), type∃(str, ty), is_reftype(ty), type∃(str0, ty), is_referencevalue(st[r -- sk]) ∧ validref(str, st[r -- sk] .refval, ty, st) ⊦ ty = void_type, validrefval(str0, st[r -- sk], ty, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 7:
sk .fs = mkfs(class, ty, fieldvar), validref(str, st[r -- sk] .refval, ty, st), is_referencevalue(st[r -- sk]), type∃(str0, ty), is_reftype(ty), type∃(str, ty), goodfieldandtype(r, sk, st), level⊆(str, str0) ⊦ ty = void_type, validrefval(str0, st[r -- sk], ty, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]