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Proof step 28 from proof isarray-put-field (conclusion)

⊦ fs ' ≠ _length ∧ fs ' ≠ _type → (is_array(r, st[r0 -- fs ', val]) ↔ is_array(r, st))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 27:
⊦ fs ' = _length, fs ' = _type, is_array(r, st[r0 -- fs ', val]) ↔ is_array(r, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]