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Proof step 15 from proof unchanged-put-nopathex (previous step)

⊦ sk = _type, path∃(str, r, r0, st), junkref(str, r, st), ∀ r1. (path∃(str, r, r1, st) ↔ path∃(str, r, r1, st[r0 -- sk, val])) ∧ (path∃(str, r, r1, st) → unchangedNorec(r1, st, st[r0 -- sk, val]))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 14:
⊦ sk = _type, junkref(str, r, st), path∃(str, r, r0, st), (path∃(str, r, r1, st) ↔ path∃(str, r, r1, st[r0 -- sk, val])) ∧ (path∃(str, r, r1, st) → unchangedNorec(r1, st, st[r0 -- sk, val]))

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]