Teach the DVE2 interface about atomic propositions such as "a <=
10" or "b != 3". This only work for integer variables presently. * iface/dve2/dve2.hh (load_dve2): Take an atomic_prop_set argument to indicate the AP to observe. * iface/dve2/dve2.cc (convert_aps): New function. Parse the atomic propositions in format them in a prop_set structure that will allow fast generation of the state condition. (load_dve2): Call convert_aps, and pass the resulting prop_set structure to the kripke object. (dve2_kripke::dve2_kripke): Store the prop_set structure. (dve2_kripke::~dve2_kripke): Release the prop_set, and unregister the bdd_variable associated to it. (compute_state_condition): New method that uses the prop_set. (succ_iter, state_condition): Call compute_state_condition(). * iface/dve2/dve2check.cc: Adjust the call to load_dve2 to pass it atomic propositions read from the command line.