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Proof step 49 from proof same-subclasses-forward (previous step)

ty .jtelemtype = mkclasstype(`java.lang.Object' .class), same-subclasses(`java.lang.Object' .class, str, str0), contains(str0, ty, ty3), has_classtype(ty), ty1 ≤ ty, type∃(str0, ty3), type∃(str0, ty1), type∃(str0, ty), is_reftype(ty), is_classtype(ty3), ∀ class0. contains(str0, mkclasstype(`java.lang.Object' .class), mkclasstype(class0)) → same-subclasses(class0, str, str0), is_classtype(ty1) → ¬ interface∃(str0, ty1 .class) ∧ mkfs(class, ty2, fieldvar) ' ∈ instfields(ty1 .class) ∧ ty3 ≤ ty2, is_arraytype(ty1) → ty3 ≤ ty1 .type ⊦ contains(str0, mkclasstype(`java.lang.Object' .class), ty3), same-subclasses(ty3 .class, str, str0) ∧ (contains(str0, ty3, mkclasstype(class0)) → same-subclasses(class0, str, str0))

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Rule argument

[speclemmaarg: ,is_classtype(ty) → (class = ty .class ↔ ty = mkclasstype(class)) ,[ty, class] → [ty3, class1] ,T ,javatype , ,elim-02 ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPELIM : ⊦ is_classtype(ty) → ( class = ty .class ↔ ty = mkclasstype(class))])], [EXTRATERMS : (ty3, class1)]]