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Proof step 3 from proof validref-object-01 (previous step)

¬ (validref(str, r, ty, st) ∧ ty ≤ mkclasstype(`java.lang.Object' .class)), validref(str, r, ty, st) ⊦ r = jvmref, validref(str, r, mkclasstype(`java.lang.Object' .class), st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
⊦ ¬ is_classtype(ty) ∧ ¬ is_arraytype(ty) → (validref(str, r, ty, st) ↔ r = jvmref)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPNAMEDSEQ : typefuns, , subtype-object-01, ⊦ ty ≤ mkclasstype (`java.lang.Object' .class) ↔ is_classtype(ty) ∨ is_arraytype(ty)])]]