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Proof step 9 from proof validref-intarray-put-01 (conclusion)

⊦ validref(str, r, ty, st) ∧ validref(str, r0, mkarraytype(int_type), st) → (¬ validref(str, r, ty, st[r0 -- i ', intval(j)]) ↔ false)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 8:
validref(str, r, ty, st), validref(str, r0, mkarraytype(int_type), st) ⊦ validref(str, r, ty, st[r0 -- i ', intval(j)])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]