rrP(r, r0)(H0), H0 ⊥ H, ∀ r0, r1. ((rrP(r0, r1) -* P))(H) ⊦ P(H0 ∪ H)
Used simplifier rules: ex2: ⊦ (_∃ rrP)(H) ↔ (∃ r0, r1. rrP(r0, r1)(H));