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Proof step 17 from proof bits2bits-def (previous step)

0 < bits2uint((false ' + bitsinvert(bits0))+1) ⊦ sgn(sgn(bitsinvert(false ' + (false ' + bitsinvert(bits0))+1)) +1) = sgn(true ' + bits0)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 18:
0 < bits2uint((false ' + bitsinvert(bits0))+1) ⊦ sgn(sgn(true ' + bitsinvert((false ' + bitsinvert(bits0))+1)) +1) = sgn(true ' + bits0)

Rule argument

Additional information

Used simplifier rules: ⊦ (bits + bits0) + bits1 = bits + bits0 + bits1;% ⊦ boolvar + bits = boolvar ' + bits;% ⊦ bitsinvert(false ' + bits) = true + bitsinvert(bits);