method vfunc f =
currentFuncName:=f.svar.vname;
let starting_pre = (Data_for_ltl.get_func_pre f.svar.vname) in
let starting_post = (Data_for_ltl.get_func_post f.svar.vname) in
Hashtbl.clear stmts_spec;
Hashtbl.clear stmts_to_compute_one_more_time;
propagation_result := (mk_empty_pre_or_post ());
let cur_pre = (Data_for_ltl.get_func_pre f.svar.vname) in
let _ = propagates_pre f.sbody.bstmts cur_pre in
let cur_post_st = ref (fst !propagation_result) in
while (Hashtbl.length stmts_to_compute_one_more_time) > 0 do
let _ = propagates_pre f.sbody.bstmts cur_pre in
cur_post_st := fst (!propagation_result)
done;
let post = Ltl_utils.get_next f.svar.vname Promelaast.Return !cur_post_st in
let old_post = (Data_for_ltl.get_func_post f.svar.vname) in
let post = double_bool_array_and post old_post in
Data_for_ltl.set_func_post f.svar.vname post;
let cur_post = (Data_for_ltl.get_func_post f.svar.vname) in
let cur_post = Ltl_utils.get_prev f.svar.vname Promelaast.Return cur_post in
Hashtbl.clear status_of_labeled_stmts;
second_computation_needed:=false;
let cur_pre = ref (propagates_post f.sbody.bstmts cur_post) in
while !second_computation_needed do
Hashtbl.clear status_of_labeled_stmts;
second_computation_needed:=false;
cur_pre := propagates_post f.sbody.bstmts cur_post
done;
let cur_pre = !cur_pre in
let old_pre = Data_for_ltl.get_func_pre f.svar.vname in
let pre = double_bool_array_and cur_pre old_pre in
Data_for_ltl.set_func_pre f.svar.vname pre;
let ending_pre = (Data_for_ltl.get_func_pre f.svar.vname) in
let ending_post = (Data_for_ltl.get_func_post f.svar.vname) in
if (not (double_bool_array_eq starting_pre ending_pre ) )
then begin spec_modified:=true; end;
if (not (double_bool_array_eq starting_post ending_post) )
then begin spec_modified:=true; end;
DoChildren