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Proof step 61 from proof junkref-update-equiv (previous step)

∃ refs. refs ≠ [] ∧ refs .first = r ∧ junkrefs(str, refs, st[r -- _type] .type, st), validFields(r0, fis, st), is_valid_ref(str, r0, st) ⊦ junkref(str, r, update(r0, fis, st)), path∃(str, r, r0, st), _type ∈ fis

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 60:
junkrefs(str, refs, st[refs .first -- _type] .type, st), validFields(r0, fis, st), is_valid_ref(str, r0, st) ⊦ refs = [], junkref(str, refs .first, update(r0, fis, st)), path∃(str, refs .first, r0, st), _type ∈ fis

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]