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Proof step 9 from proof is_valid_ref-02 (previous step)

st[r -- _type] = typeval(mkclasstype(class)), r ∈ st, r -- _type ∈ st, goodfieldsandtypes(r, instfields(class), st) ⊦ r = jvmref, class+∃(str, class) ∧ ¬ is_abstract(class) ∧ r ≠ jvmref ∧ r -- _type ∈ st ∧ is_typevalue(st[r -- _type]) ∧ is_classtype(st[r -- _type] .type) ∧ is_obj(r, st[r -- _type] .type .class, st) ∨ is_array(str, r, st) ↔ class+∃(str, class) ∧ ¬ is_abstract(class)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 8:
st[r -- _type] = typeval(mkclasstype(class)), goodfieldsandtypes(r, instfields(class), st), r -- _type ∈ st, r ∈ st ⊦ r = jvmref, class+∃(str, class) ∧ ¬ is_abstract(class) ∧ is_obj(r, class, st) ∨ is_array(str, r, st) ↔ class+∃(str, class) ∧ ¬ is_abstract(class)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ mkclasstype(class) .class = class], [CSIMPSEQ : ⊦ is_classtype(mkclasstype(class))], [CSIMPSEQ : ⊦ typeval(ty) .type = ty], [CSIMPSEQ : ⊦ is_typevalue(typeval(ty))])]]