web evaluation fix

evalweb/web_checker.py

@@ -97,7 +97,9 @@ class WebChecker:
         self.eq = reg.DFA.is_equivalent(student.dfa, teacher.dfa)
 
         # self.img_src = self.picture(self.eq.inf is None)
-        if self.task_solved == "" and self.eq.inf is None:
+        if self.task_solved == "" and \
+                self.eq.right_counterexample is None and \
+                self.eq.left_counterexample is None:
             return True
         return False