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Proof step 38 from proof rm-allsize (previous step)

¬ a0 ∈ y0 ∧ ¬ a0 ∈ z, rmdup(z) = y + a ' + z0, a ∈ z, a0 ∈ y0 ∨ a0 ∈ y ∨ a0 ∈ z0 ⊦ # rmdup(x0) = # rmdup((y0 + y) + z0), a0 ∈ x0, a ∈ y0, a ∈ x0, a ∈ y, a ∈ z0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 39:
rmdup(z) = y + a ' + z0, a ∈ z, a0 ∈ y ∨ a0 ∈ z0 ⊦ # rmdup(x0) = # rmdup((y0 + y) + z0), a0 ∈ x0, a ∈ y0, a ∈ x0, a ∈ y, a ∈ z0, a0 ∈ z, a0 ∈ y0

Proof step 38 from proof rm-allsize (previous step)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

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