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Proof step 14 from proof junkrefs-one (previous step)

⊦ r = jvmref, junkrefs(str, r ', ty, st) ↔ r ≠ jvmref ∧ (¬ is_valid_ref(str, r, st) ∨ ¬ st[r -- _type] .type ≤ ty)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 13:
⊦ r = jvmref, junkrefs(str, r ', ty, st) ↔ ¬ is_valid_ref(str, r, st) ∨ ¬ st[r -- _type] .type ≤ ty

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]