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Proof step 23 from proof compatobj-isobj (previous step)

st[r -- _type] = typeval(ty), ty = mkclasstype(class), r ∈ st, r -- _type ∈ st, is_typevalue(st[r -- _type]), compatfields(str, r, instfields(class), st), class+∃(str, class) ⊦ r = jvmref, is_obj(r, class, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 22:
st[r -- _type] = typeval(mkclasstype(class)), class+∃(str, class), compatfields(str, r, instfields(class), st), r -- _type ∈ st, r ∈ st ⊦ r = jvmref, is_obj(r, class, st)

Rule argument

[emptyarg]

Additional information

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