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Proof step 39 from proof shiftright-rec-pos (previous step)

mklist(false, i→n(i0)) + false ' + false ' + true ' = false ' + boolvar ' + bits1, mklist(false, i→n(i0)) + false ' = false ' + bits, 0 ≤ i0 ⊦ bits2uint(boolvar ') = 0, ¬ boolvar ∧ ¬ true ∈ bits1

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 40:
⊦ ¬ true ∈ bits → bits2uint(bits) = 0
Proof step 41:
¬ ¬ true ∈ boolvar ', mklist(false, i→n(i0)) + false ' + false ' + true ' = false ' + boolvar ' + bits1, mklist(false, i→n(i0)) + false ' = false ' + bits, 0 ≤ i0 ⊦ bits2uint(boolvar ') = 0, ¬ boolvar ∧ ¬ true ∈ bits1

Rule argument

seq: ⊦ ¬ true ∈ bits → bits2uint(bits) = 0 subst: [bits] → [boolvar '] rotate: F spec: int2bits inst: name: bits2uint-zeros

Additional information

Used terms: boolvar '