all_goals
  have := ‹_ ↓ₛ _›.not_triggers_rcn
  have := ‹_ ↓ₑ _›.triggers_rcn
  simp_all
case skip.exec
α : Type
inst✝ : Readable α
s s₁ s₂ : State α
s✝ : s ↓ₛ s₁
e✝ : s ↓ₑ s₂
h : Step.Skip.rcn s✝ = Step.Exec.rcn e✝
⊢ s₁ = s₂

case exec.skip
α : Type
inst✝ : Readable α
s s₁ s₂ : State α
e✝ : s ↓ₑ s₁
s✝ : s ↓ₛ s₂
h : Step.Exec.rcn e✝ = Step.Skip.rcn s✝
⊢ s₁ = s₂
no goals