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Proof step 6 from proof unchNorec-validrefs-pathex (previous step)

r0 = r1, validrefs(str, r1 ' + refs0, ty, st), ∀ r. r = r1 ∨ r ∈ refs0 → unchangedNorec(r, st, st0) ⊦ path∃(str, r1, r0, st0), r0 ≠ r1 ∧ ¬ r0 ∈ refs0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
validrefs(str, r1 ' + refs0, ty, st), ∀ r. r = r1 ∨ r ∈ refs0 → unchangedNorec(r, st, st0) ⊦ r1 = jvmref, is_valid_ref(str, r1, st0)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ path∃(str, r, r, st) ↔ r = jvmref ∨ r ≠ jvmref ∧ is_valid_ref(str, r, st)])]]