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Proof step 15 from proof pathex-putbyte-field (previous step)

path∃(str, r0, r1, st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)]) ⊦ junkref(str, r0, st), path∃(str, r0, r1, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ path∃(str, r, r0, st) ↔ (∃ refs. refs ≠ [] ∧ refs .first = r ∧ refs .last = r0 ∧ validrefs(str, refs, mkclasstype(`java.lang.Object' .class), st))
Proof step 14:
∃ refs. refs ≠ [] ∧ refs .first = r0 ∧ refs .last = r1 ∧ validrefs(str, refs, mkclasstype(`java.lang.Object' .class), st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)]) ⊦ junkref(str, r0, st), path∃(str, r0, r1, st)

Rule argument

[crewrite-arg: pathex-def , F , [st, r0, r, str] → [st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)], r1, r0, str] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)], r1, r0, str)]]