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Proof step 6 from proof junkref-update (previous step)

junkref(str, r, update(r0, fis0, st)[r0 -- sk, val]), junkref(str, r, update(r0, fis0, st)), ∀ str0, r1, r2, st0. junkref(str0, r1, update(r2, fis0, st0)) → path∃(str0, r1, r2, st0) ∨ junkref(str0, r1, st0) ⊦ _type = sk, path∃(str, r, r0, st), junkref(str, r, st), _type ∈ fis0

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

[EXRARG : pos: left 3, [QUANTTERMLIST : (str, r, r0, st)]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (str, r, r0, st)]]