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Proof step 15 from proof is_valid_ref-levelsubset (previous step)

is_valid_ref(str, r, st), level⊆(str, str0) ⊦ is_obj(str0, r, st) ∨ is_array(str0, r, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 14:
level⊆(str, str0), is_valid_ref(str, r, st) ⊦ is_array(str0, r, st), is_obj(str0, r, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]