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Proof step 24 from proof validval-put-any (previous step)

sk .fs = mkfs(class0, ty0, fieldvar0), validval(str, r1 -- sk, val, st), is_reftype(ty), validref(str, r0, ty, st), r ≠ r1 ∨ _type ≠ sk ⊦ is_fskey(sk) → (is_referencevalue(val) → validref(str, val .refval, ty0, st) ∧ is_reftype(ty0)) ∧ (¬ is_referencevalue(val) → okval(val, ty0) ∧ ty0 ≠ void_type ∧ sk ≠ _length), mkfs(class, ty, fieldvar) ' = _length, ty = void_type, validref(str, r0, ty, st[r1 -- sk, val])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 23:
sk .fs = mkfs(class0, ty0, fieldvar0), validref(str, r0, ty, st), is_reftype(ty), validval(str, r1 -- sk, val, st), is_fskey(sk), r ≠ r1 ∨ _type ≠ sk ⊦ ty = void_type, mkfs(class, ty, fieldvar) ' = _length, validref(str, r0, ty, st[r1 -- sk, val]), (is_referencevalue(val) → validref(str, val .refval, ty0, st) ∧ is_reftype(ty0)) ∧ (¬ is_referencevalue(val) → okval(val, ty0) ∧ ty0 ≠ void_type ∧ sk ≠ _length)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]