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Proof step 7 from proof is_valid_ref-02 (previous step)

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

Heuristic simplifier applied rule simplifier

And closed the goal!

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ st[r -- _type] = typeval(mkclasstype(class)) → ¬ is_array(str, r, st)], [CSIMPSEQ : ⊦ rk × val ∈ st ↔ rk ∈ st ∧ st[rk] = val])]]