case single e           => exact h ▸ e.acyclic
α : Type
inst✝ : Hierarchical α
s₁ s₂ : State α
rcn : ID
s₁✝ s₂✝ : State α
e : s₁✝ ↓ᵢ s₂✝
h : rcn = Execution.Instantaneous.Step.rcn e
⊢ rcn ≮[s₁✝.rtr] rcn
no goals