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Proof step 6 from proof unchanged-junkref (previous step)

unchanged(str, r, st, st1), junkrefs(str, r ' + refs0, st1[r -- _type] .type, st1) ⊦ r = jvmref, junkrefs(str, r ' + refs0, st[r -- _type] .type, st), is_valid_ref(str, r, st), st[r -- _type] .type ≤ st1[r -- _type] .type

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

[x0lemmaarg: spec-name: junkrefs instance-name: lemma-name: junkrefs-is-junk antecedent: succedent: r ≠ jvmref ∧ ( ¬ is_valid_ref(str, r, st) ∨ ¬ st[r -- _type] .type ≤ ty) → junkrefs(str, r ' + refs, ty, st) substlist: [st, ty, refs, r, str] → [st, st[r -- _type] .type, refs0, r, str] add preconditions?: F is rewrite lemma?: T current spec?: F rotate lemma?: F replace all?: T paths: ((1, 0, 1)) dummy: () ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1])], [EXTRATERMS : (st, st[r -- _type] .type, refs0, r, str)]]