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Proof step 27 from proof unchNorec-isobj (previous step)

st[r -- _type] = typeval(ty), ty = mkclasstype(class), r ∈ st, is_obj(r, class, st), is_typevalue(st[r -- _type]), r -- _type ∈ st, unchangedNorec(r, st, st0) ⊦ r = jvmref, is_obj(r, st0[r -- _type] .type .class, st0) ∧ is_classtype(st0[r -- _type] .type) ∧ is_typevalue(st0[r -- _type]) ∧ r -- _type ∈ st0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 26:
st[r -- _type] = typeval(mkclasstype(class)), unchangedNorec(r, st, st0), r -- _type ∈ st, is_obj(r, class, st), r ∈ st ⊦ r = jvmref, is_obj(r, st0[r -- _type] .type .class, st0) ∧ is_classtype(st0[r -- _type] .type) ∧ is_typevalue(st0[r -- _type]) ∧ r -- _type ∈ st0

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_typevalue(typeval(ty))])]]