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Proof step 2 from proof fits-pathex-01 (previous step)

validrefnotnull(str, r, ty, st), fits(r, sks0, st) ⊦ r = jvmref, path∃(str, r, st[r -- sks0] .refval, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ ¬ junkref(str, r, st) ∧ fits(r, sks, st) → path∃(str, r, st[r -- sks] .refval, st)

Rule argument

[crewrite-arg: fits-pathex, F, [sks, st, r, str] → [sks0, st, r, str]]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ junkref(str, r, st) → ¬ validrefnotnull(str, r, ty, st)])], [EXTRATERMS : (sks0, st, r, str)]]