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Proof step 7 from proof contains-objectarray (previous step)

ty = mkarraytype(ty2), ty2 .jtelemtype = mkclasstype(`java.lang.Object' .class), is_arraytype(ty), contains(str, ty, ty0), type∃(str, ty0), ∀ ty0, str, ty1. i→n(ty1 .jtdims) < i→n(ty .jtdims) → ( contains(str, ty1, ty0) ∧ ty1 .jtelemtype = mkclasstype(`java.lang.Object' .class) → type∃(str, ty0) ∧ (is_classtype(ty0) ∨ is_arraytype(ty0)) ∧ is_arraytype(ty1) ∨ contains(str, mkclasstype(`java.lang.Object' .class), ty0)) ⊦ contains(str, mkclasstype(`java.lang.Object' .class), ty0), is_classtype(ty0), is_arraytype(ty0)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 6:
ty2 .jtelemtype = mkclasstype(`java.lang.Object' .class), contains(str, mkarraytype(ty2), ty0), type∃(str, ty0), ∀ ty0, str, ty1. i→n(ty1 .jtdims) < i→n(mkarraytype(ty2) .jtdims) → ( contains(str, ty1, ty0) ∧ ty1 .jtelemtype = mkclasstype(`java.lang.Object' .class) → type∃(str, ty0) ∧ (is_classtype(ty0) ∨ is_arraytype(ty0)) ∧ is_arraytype(ty1) ∨ contains(str, mkclasstype(`java.lang.Object' .class), ty0)) ⊦ contains(str, mkclasstype(`java.lang.Object' .class), ty0), is_classtype(ty0), is_arraytype(ty0)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_arraytype(mkarraytype(ty))])]]