proposition: Theorem ceval_deterministic''''': forall c st st1 st2, c / st \\ st1 -> c / st \\ st2 -> st1 = st2.
proof: Proof. intros c st st1 st2 E1 E2. generalize dependent st2; induction E1; intros st2 E2; inv E2; try find_rwinv; repeat find_eqn; auto. Qed.
imports: Coq.omega.Omega Maps Imp