| (R2(pm, S', S'') ∧ R1(pm, S', S'')) -+-> (last ⊃ Post2(pm, s1, S) ∧ Post1(pm, s1, S);G2(pm, S, S') ∨ G1(pm, S, S')), [:S | [PL R1(pm, S', S'') -+-> (last ⊃ Post1(pm, s1, S);G1(pm, S, S'))] ∥nf [PL S = s]], RG-restr(pm, R1, G1, Pre1, Post1, I, R2, G2, Pre2, Post2), R2(pm, s0, S), I(pm, s0), Pre1(pm, s1), Pre2(pm, s1), I(pm, S), I(pm, s1), ¬ R2(pm, s0, s) ⊦ (R1(pm, S', S'') ∧ R2(pm, S', S'')) -+-> (last ⊃ Post1(pm, s1, S) ∧ Post2(pm, s1, S);G1(pm, S, S') ∨ G2(pm, S, S')) |
(last ⊃ Post2(pm, s1, S) ∧ Post1(pm, s1, S);G2(pm, S, S') ∨ G1(pm, S, S')), RG-restr(pm, R1, G1, Pre1, Post1, I, R2, G2, Pre2, Post2), true, I(pm, s0), Pre1(pm, s1), Pre2(pm, s1), true, I(pm, s1), ¬ R2(pm, s0, s) ⊦ (last ⊃ Post1(pm, s1, S) ∧ Post2(pm, s1, S);G1(pm, S, S') ∨ G2(pm, S, S'))