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Proof step 2 from proof ushort-neg (previous step)

s2i(sho) < 0 ⊦ us2i(sho) = s2i(sho) + 65536

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ us2i(sho) = bits2int(false ' + fillsgn(16, int2bits(s2i(sho))))
Proof step 4:
s2i(sho) < 0 ⊦ bits2int(false ' + fillsgn(16, int2bits(s2i(sho)))) = s2i(sho) + 65536

Rule argument

name: unsigned-short rotate: F subst: [sho] → [sho]

Additional information

Used terms: sho