module Safety:sig
..end
Safety checks
exception Unsafe of Node.t
exception to signal that a safety check failed. In this case the current search must be stopped.
val check : Ast.t_system -> Node.t -> unit
check s n
raises Unsafe n
if the node n
is immediately reachable in
the system s
, i.e. if n /\ s.init
is not unsatifiable. Otherwise it
does nothing.