⊦ putByteArray(bytes, r, st) = putByteArray(bytes, r, 0, st)
⊦ r0 -- fs ' ∈ putByteArray(bytes, r, j, st) ↔ r0 -- fs ' ∈ st
[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, r, bytes)]]