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Proof step 11 from proof validref-put (conclusion)

⊦ oktype(val, ty, st) ∧ is_valid_ref(r, st) ∧ ty ≠ void_type ∧ mkfs(class, ty, fieldvar) ' ≠ _length → is_valid_ref(r, st[r1 -- mkfs(class, ty, fieldvar) ', val])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 10:
is_valid_ref(r, st), oktype(val, ty, st) ⊦ ty = void_type, mkfs(class, ty, fieldvar) ' = _length, is_valid_ref(r, st[r1 -- mkfs(class, ty, fieldvar) ', val])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]