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Proof step 7 from proof validref-intarray-put (conclusion)

⊦ validref(str, r, mkarraytype(int_type), st) → (¬ validref(str, r, mkarraytype(int_type), st[r -- i ', intval(j)]) ↔ false)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 6:
validref(str, r, mkarraytype(int_type), st) ⊦ validref(str, r, mkarraytype(int_type), st[r -- i ', intval(j)])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]