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Proof step 8 from proof cyclic-put-statfield (previous step)

validrefs(str, r ' + refs0, st[r -- _type] .type, st), r ≠ jvmref ∨ _type ≠ sk ⊦ ∃ refs. dups(refs) ∧ refs .first = r ∧ validrefs(str, refs, st[r -- _type] .type, st), ¬ r ∈ refs0 ∧ ¬ dups(refs0)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 7:
validrefs(str, r ' + refs0, st[r -- _type] .type, st), r ≠ jvmref ∨ _type ≠ sk ⊦ ¬ r ∈ refs0 ∧ ¬ dups(refs0), ∃ refs. dups(refs) ∧ refs .first = r ∧ validrefs(str, refs, st[refs .first -- _type] .type, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]