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Proof step 2 from proof pathex-no-newref (previous step)

path∃(str, r, r1, st), newref(r1, st) ⊦ r1 = jvmref

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ ¬ is_valid_ref(r1, st) ∧ r1 ≠ jvmref → ¬ path∃(str, r, r1, st)

Rule argument

[crewrite-arg: pathex-not-is-validref , F , [st, r1, r, str] → [st, r1, r, str] ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ newref(r, st) → ¬ is_valid_ref(r, st)])], [EXTRATERMS : (st, r1, r, str)]]