| bits = bits2 + boolvar1 ', ∀ bits, boolvar0, boolvar, n, bits1. # bits1 < # bits0 → true → n = 0 ∨ bits1 = [] ∨ (boolvar ∈ bitsor(mklist(boolvar0, n) + bits, bits1) ↔ boolvar ∈ bitsor(boolvar0 ' + bits, bits1)) ⊦ n + # bits = 0, # bits0 = 1, bits = [], bits0 = [], n = 0, boolvar ∈ bitsor(mklist(boolvar0, n) + bits2, bits0.butlast) ∨ (boolvar ↔ boolvar1 ∨ bits0.last) ↔ boolvar ∈ bitsor(boolvar0 ' + bits, bits0) |
∀ bits, boolvar0, boolvar, n, bits1. # bits1 < # bits0 → true → n = 0 ∨ bits1 = [] ∨ (boolvar ∈ bitsor(mklist(boolvar0, n) + bits, bits1) ↔ boolvar ∈ bitsor(boolvar0 ' + bits, bits1)) ⊦ # bits0 = 1, bits0 = [], n = 0, boolvar ∈ bitsor(mklist(boolvar0, n) + bits2, bits0.butlast) ∨ (boolvar ↔ boolvar1 ∨ bits0.last) ↔ boolvar ∈ bitsor(boolvar0 ' + bits2 + boolvar1 ', bits0)
Used simplifier rules: ⊦ bits + boolvar ' ≠ [];% ⊦ m + n = n + m;% ⊦ (m + n0) + n1 = m + n0 + n1;% ⊦ m + 1 ≠ 0;% ⊦ (bits + bits0) + bits1 = bits + bits0 + bits1;% ⊦ # boolvar ' = 0 +1;% ⊦ #(bits + bits0) = # bits + # bits0;