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Proof step 21 from proof cyclic-put-badarrayfield (conclusion)

⊦ ¬ junkref(str, r, st) ∧ fs ' ≠ _type ∧ is_arraytype(st[r0 -- _type] .type) ∧ fs ' ≠ _length → (cyclic(str, r, st[r0 -- fs ', val]) ↔ cyclic(str, r, st))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 20:
is_arraytype(st[r0 -- _type] .type) ⊦ fs ' = _type, fs ' = _length, cyclic(str, r, st[r0 -- fs ', val]) ↔ cyclic(str, r, st), junkref(str, r, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]