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Proof step 10 from proof junkref-not-valid (previous step)

⊦ r = jvmref, is_valid_ref(r, st), junkref(str, r, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ r ≠ jvmref ∧ ¬ is_valid_ref(str, r, st) → junkref(str, r, st)
Proof step 9:
¬ (r ≠ jvmref ∧ ¬ is_valid_ref(str, r, st)) ⊦ r = jvmref, is_valid_ref(r, st), junkref(str, r, st)

Rule argument

[crewrite-arg: junkref-is-junk, F, [st, r, str] → [st, r, str]]

Additional information

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