Fix the counter example

F_mu_ref_conc/examples/counter.v

@@ -496,7 +496,7 @@ Theorem counter_ctx_refinement :
 Proof.
   set (Σ := #[invΣ ; gen_heapΣ loc val ; authΣ cfgUR ]).
   set (HG := HeapPreIG Σ _ _).
-  eapply (binary_soundness Σ _).
+  eapply (logrel_ctxequiv Σ _).
   (* TODO: how to get rid of this bullshit with closed conditions? *)
   rewrite /FG_counter /CG_counter; try solve_closed.
   rewrite /FG_counter /CG_counter; try solve_closed.