| ∀ y. rmdup(x0 + rmdup(y)) = rmdup(x0 + y) ⊦ rmdup((a + x0) + rmdup(y)) = rmdup((a + x0) + y) |
∀ y. rmdup(x0 + rmdup(y)) = rmdup(x0 + y) ⊦ rmdup((a ' + x0) + rmdup(y)) = rmdup((a ' + x0) + y)
Used simplifier rules: a: ⊦ (x + y) + z = x + y + z; from specification list%c: ⊦ a + x = a ' + x; from specification list