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Proof step 8 from proof at-1dim-other (previous step)

is_indexkey(sk) ∧ (sk .index < 0 ∨ j ≤ sk .index) ⊦ (addarray(r0, ty, j, st)[r0 -- sk]) = st[r0 -- sk], ¬ is_indexkey(sk) ∧ sk ≠ _type ∧ sk ≠ _length

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 7:
is_indexkey(sk), sk .index < 0 ∨ j ≤ sk .index ⊦ (addarray(r0, ty, j, st)[r0 -- sk]) = st[r0 -- sk]

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]