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Proof step 18 from proof cyclic-put-badarrayfield (previous step)

∃ refs, r0. ¬ dups(refs) ∧ r0 ∈ refs ∧ refs .first = r ∧ validrefs(str, refs + r0 ', st[r -- _type] .type, st), is_arraytype(st[r0 -- _type] .type) ⊦ cyclic(str, r, 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 17:
r1 ∈ refs, validrefs(str, refs + r1 ', st[refs .first -- _type] .type, st), is_arraytype(st[r0 -- _type] .type) ⊦ fs ' = _type, fs ' = _length, cyclic(str, refs .first, st[r0 -- fs ', val]), junkref(str, refs .first, st), dups(refs)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]