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Proof step 4 from proof validref-not-tdnameex (previous step)

ty = mkclasstype(class0), st[r -- _type] .type = mkclasstype(class), is_obj(str, r, st), validref(str, r, ty, st), is_classtype(ty), class ≤ class0 ⊦ r = jvmref, tdname+∃(str, class)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
st[r -- _type] .type = mkclasstype(class), is_obj(str, r, st), validref(str, r, mkclasstype(class0), st), class ≤ class0 ⊦ r = jvmref, tdname+∃(str, class)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPNAMEDSEQ : javatype, , test-10, ⊦ is_classtype (mkclasstype(class))])]]