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Index: source/telingo/transformers/head.py
===================================================================
--- source.orig/telingo/transformers/head.py
+++ source/telingo/transformers/head.py
@@ -564,10 +564,12 @@ class HeadTransformer:
cond = []
diff = _ast.BinaryOperation(loc, _ast.BinaryOperator.Minus, param, shift)
if lhs.ast_type != _ast.ASTType.SymbolicTerm or lhs.symbol.type != _clingo.SymbolType.Number or lhs.symbol.number > 0:
- cond.append(_ast.Literal(loc, _ast.Sign.NoSign, _ast.Comparison(_ast.ComparisonOperator.LessEqual, lhs, diff)))
+ cond.append(_ast.Literal(loc, _ast.Sign.NoSign,
+ _ast.Comparison(lhs, [_ast.Guard(_ast.ComparisonOperator.LessEqual, diff)])))
if rhs.ast_type != _ast.ASTType.SymbolicTerm or rhs.symbol.type != _clingo.SymbolType.Supremum:
- cond.append(_ast.Literal(loc, _ast.Sign.NoSign, _ast.Comparison(_ast.ComparisonOperator.LessEqual, diff, rhs)))
+ cond.append(_ast.Literal(loc, _ast.Sign.NoSign,
+ _ast.Comparison(diff, [_ast.Guard(_ast.ComparisonOperator.LessEqual, rhs)])))
elems.extend([_ast.ConditionalLiteral(loc, _ast.Literal(loc, _ast.Sign.NoSign, head), cond) for head in heads])
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