[lib] CLUnfolder: fix typos

library/cadbiom/models/clause_constraints/mcl/CLUnfolder.py

@@ -594,6 +594,8 @@ class CLUnfolder(object):
     def __shift_clause(self, ncl):
         """Shift a clause for the current __shift_step
 
+        (no used anymore, replaced by direct use of C++ code)
+
         self.shift_step must be frozen in order to avoid problems during the
         unflatten() step of RawSolutions.
         => Each step MUST have the same number of variables.
@@ -692,12 +694,6 @@ class CLUnfolder(object):
             - init_backward_unfolding()
         """
         if self.__invariant_constraints:
-            # Old API
-            # self.__invariant_constraints.append(
-            #     [self.__shift_clause(clause)
-            #      for clause in self.__invariant_constraints[-1]]
-            # )
-
             # New API via C++ module
             self.__invariant_constraints.append(
                 shift_dynamic(
@@ -1014,7 +1010,12 @@ class CLUnfolder(object):
 
 
     def __constraints_satisfied(self):
-        """Test if the system loaded in the solver is satisfiable
+        """Ask the SAT solver if the query/system is satisfiable in the given
+        number of steps.
+
+        .. warning:: vvars (frontier values) are not tested. Thus the satisfiability
+            is not tested for interesting variables like in squery_solve().
+
         :return: True if the problem is satisfiable, False otherwise.
         :rtype: <boolean>
         """
@@ -1075,7 +1076,7 @@ class CLUnfolder(object):
                 for solint in solver.msolve_selected(max_sol, vvars))
 
     def squery_is_satisfied(self, max_step):
-        """Ask the SAT solver if the query/unfolding is satisfiable in the given
+        """Ask the SAT solver if the query/system is satisfiable in the given
         number of steps.
 
         If __invariant_property is set and __final_property is not set,