add game_formula to Property init

paynt/verification/property.py

@@ -95,7 +95,9 @@ def above_model_checking_precision(a, b):
     def __init__(self, prop):
         self.property = prop
         rf = prop.raw_formula
+
         self.game_optimizing_player = None # player index for game properties
+        self.game_formula = None
 
         # use comparison type to deduce optimizing direction
         comparison_type = rf.comparison_type
@@ -157,6 +159,10 @@ def maximizing(self):
     def is_until(self):
         return self.formula.subformula.is_until_formula
 
+    @property
+    def has_game_formula(self):
+        return self.game_formula is not None
+
     def transform_until_to_eventually(self):
         if not self.is_until:
             return
@@ -236,6 +242,9 @@ def __init__(self, prop, epsilon=0):
         self.property = prop
         rf = prop.raw_formula
 
+        self.game_optimizing_player = None # player index for game properties
+        self.game_formula = None
+
         # use comparison type to deduce optimizing direction
         if rf.optimality_type == stormpy.OptimizationDirection.Minimize:
             self.minimizing = True