| validrefs(str, r ' + refs1 + r0 ' + refs0, ty, st) ⊦ path∃(str, r, r0, st) |
⊦ path∃(str, r, r0, st) ↔ (∃ refs. refs ≠ [] ∧ refs .first = r ∧ refs .last = r0 ∧ validrefs(str, refs, mkclasstype(`java.lang.Object' .class), st))
validrefs(str, r ' + refs1 + r0 ' + refs0, ty, st) ⊦ ∃ refs. refs ≠ [] ∧ refs .first = r ∧ refs .last = r0 ∧ validrefs(str, refs, mkclasstype(`java.lang.Object' .class), st)
[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, r0, r, str)]]