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Proof step 11 from proof junkref-put-badarrayfield (previous step)

is_arraytype(st[r0 -- _type] .type), ∃ refs. refs ≠ [] ∧ refs .first = r ∧ junkrefs(str, refs, (st[r0 -- fs ', val][r -- _type]) .type, st[r0 -- fs ', val]) ⊦ fs ' = _type, fs ' = _length, junkref(str, r, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 10:
is_arraytype(st[r0 -- _type] .type), junkrefs(str, refs, st[refs .first -- _type] .type, st[r0 -- fs ', val]) ⊦ fs ' = _type, fs ' = _length, refs = [], junkref(str, refs .first, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ sk ≠ sk0 → (st[r -- sk, val][r0 -- sk0]) = st[r0 -- sk0]])]]