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Proof step 16 from proof cyclic-put-badarrayfield (previous step)

r1 ∈ refs, validrefs(str, refs + r1 ', st[refs .first -- _type] .type, st), is_arraytype(st[r0 -- _type] .type) ⊦ fs ' = _type, fs ' = _length, ∃ refs0, r1. ¬ dups(refs0) ∧ r1 ∈ refs0 ∧ refs0 .first = refs .first ∧ validrefs(str, refs0 + r1 ', (st[r0 -- fs ', val][refs .first -- _type]) .type, st[r0 -- fs ', val]), junkref(str, refs .first, st), dups(refs)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 15:
r1 ∈ refs, validrefs(str, refs + r1 ', st[refs .first -- _type] .type, st), is_arraytype(st[r0 -- _type] .type) ⊦ fs ' = _type, fs ' = _length, junkref(str, refs .first, st), dups(refs), ∃ refs0, r. ¬ dups(refs0) ∧ r ∈ refs0 ∧ refs0 .first = refs .first ∧ validrefs(str, refs0 + r ', st[refs .first -- _type] .type, st[r0 -- fs ', val])

Rule argument

[emptyarg]

Additional information

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