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Proof step 4 from proof putBar-in (previous step)

rk = r0 -- sk ⊦ rk ∈ putByteArray(bytes, r, i, st) ↔ r0 = r ∧ ¬ is_fskey(sk) ∧ ¬ sk .index < i ∧ ¬ i + n→i(# bytes) ≤ sk .index ∨ rk ∈ st

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
⊦ r0 -- sk ∈ putByteArray(bytes, r, i, st) ↔ r0 = r ∧ ¬ is_fskey(sk) ∧ ¬ sk .index < i ∧ ¬ i + n→i(# bytes) ≤ sk .index ∨ r0 -- sk ∈ st

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]