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Proof step 2 from proof junkref-primarray-level (previous step)

junkref(str, r, st) ⊦ junkref(str1, r, st), has_classtype(st[r -- _type] .type)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ ¬ has_classtype(st[r -- _type] .type) ∧ junkref(str, r, st) → junkref(str1, r, st)

Rule argument

[crewrite-arg: junkref-primarray-level-01 , F , [st, r, str, str1] → [st, r, str, str1] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, r, str, str1)]]