| □ (Out = Outf(m) ∧ Outf' = (Outf(m; Out'))), ◇ last, [:S, Out | SEQ#(m, Inpf(m); S, Out)], GInv(S), Pr(m)(S) ⊦ (Ry(m)(S', S'') ∧ (GInv(S') → GInv(S''))) -+-> (last ⊃ Po(m)(S) ∧ GInv(S);Gr(m)(S, S') ∧ ¬ blocked ∧ (GInv(S) → GInv(S'))), □ Out' = Outf'(m) |
true, true, Out = Outf(m), Outf' = (Outf(m; Out')), Out' ≠ Outf'(m) ⊦