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Proof step 6 from proof unchNorec-isvalidref (previous step)

unchangedNorec(r, st, st0), is_valid_ref(str, r, st) ⊦ is_obj(str, r, st0) ∨ is_array(str, r, st0)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
is_valid_ref(str, r, st), unchangedNorec(r, st, st0) ⊦ is_array(str, r, st0), is_obj(str, r, st0)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]