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Proof step 40 from proof cyclic-def-simple (previous step)

dups(refs1) ∨ r ∈ refs1, validrefs(str, r ' + refs1, st[r -- _type] .type, st), is_array(str, r, st) ⊦ r = jvmref, ¬ r ∈ refs1 ∧ ¬ dups(refs1), (dups(refs1) ∨ r ∈ refs1) ∧ validrefs(str, r ' + refs1, mkclasstype(`java.lang.Object' .class), st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 39:
validrefs(str, r ' + refs1, st[r -- _type] .type, st), is_array(str, r, st), dups(refs1) ∨ r ∈ refs1 ⊦ r = jvmref, validrefs(str, r ' + refs1, mkclasstype(`java.lang.Object' .class), st), ¬ r ∈ refs1 ∧ ¬ dups(refs1)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1])]]