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Proof step 13 from proof unchanged-levelsubset (previous step)

unchanged(str, r, st, st0), level⊆(str, str0), ∀ r0. (path∃(str, r, r0, st) ↔ path∃(str, r, r0, st0)) ∧ (path∃(str, r, r0, st) → unchangedNorec(r0, st, st0)) ⊦ ∀ r0. (path∃(str0, r, r0, st) ↔ path∃(str0, r, r0, st0)) ∧ (path∃(str0, r, r0, st) → unchangedNorec(r0, st, st0)), junkref(str, r, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 12:
level⊆(str, str0), unchanged(str, r, st, st0), ∀ r0. (path∃(str, r, r0, st) ↔ path∃(str, r, r0, st0)) ∧ (path∃(str, r, r0, st) → unchangedNorec(r0, st, st0)) ⊦ junkref(str, r, st), (path∃(str0, r, r0, st) ↔ path∃(str0, r, r0, st0)) ∧ (path∃(str0, r, r0, st) → unchangedNorec(r0, st, st0))

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]