Added set of set handling (thru concept ISA)

src/core/builtin_helpers.py

@@ -7,7 +7,6 @@ from core.ast.visitors import UnreferencedNamesVisitor
 from core.builtin_concepts import BuiltinConcepts
 
 
-
 def is_same_success(sheerka, return_values):
     """
     Returns True if all returns values are successful and have the same value
@@ -206,7 +205,7 @@ def _extract_predicates(sheerka, node, variables_to_include, variables_to_exclud
     elif node.node_type == "BoolOp":
         all_op = True
         temp_res = []
-        for op in node.get_prop("values"):
+        for op in node.get_prop("values").body:
             res = _extract_predicates(sheerka, op, variables_to_include, variables_to_exclude)
             if len(res) == 0:
                 all_op = False