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Proof step 2 from proof setShort-theorem (previous step)

fillsgn(2, int2bytes(s2i(sho))) = by ' + by0 ' ⊦ by0 = i2b(s2i(sho)) ∧ by = i2b(s2i(sho) i>> 8)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ j i>> i = j >> band(i, 31)
Proof step 4:
fillsgn(2, int2bytes(s2i(sho))) = by ' + by0 ' ⊦ by0 = i2b(s2i(sho)) ∧ by = i2b(s2i(sho) >> band(8, 31))

Rule argument

seq: ⊦ j i>> i = j >> band(i, 31) subst: [i, j] → [8, s2i(sho)] rotate: F spec: intops inst: name: intshiftright-def-unbounded

Additional information

Used terms: 8, s2i(sho)