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-rw-r--r--Source/VCExpr/TermFormulaFlattening.cs6
1 files changed, 6 insertions, 0 deletions
diff --git a/Source/VCExpr/TermFormulaFlattening.cs b/Source/VCExpr/TermFormulaFlattening.cs
index 9198d753..7815413f 100644
--- a/Source/VCExpr/TermFormulaFlattening.cs
+++ b/Source/VCExpr/TermFormulaFlattening.cs
@@ -155,6 +155,12 @@ Contract.Ensures(cce.NonNullElements(Contract.Result<List<VCExprLetBinding>>()))
////////////////////////////////////////////////////////////////////////////
+ public override bool AvoidVisit(VCExprNAry node, FlattenerState arg)
+ {
+ return node.Op.Equals(VCExpressionGenerator.AndOp) ||
+ node.Op.Equals(VCExpressionGenerator.OrOp);
+ }
+
public override VCExpr Visit(VCExprNAry node, FlattenerState state){
Contract.Requires(node != null);
Contract.Ensures(Contract.Result<VCExpr>() != null);