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-rw-r--r--Source/Provers/SMTLib/ProverInterface.cs9
1 files changed, 8 insertions, 1 deletions
diff --git a/Source/Provers/SMTLib/ProverInterface.cs b/Source/Provers/SMTLib/ProverInterface.cs
index de9be1b9..8f6c4503 100644
--- a/Source/Provers/SMTLib/ProverInterface.cs
+++ b/Source/Provers/SMTLib/ProverInterface.cs
@@ -780,7 +780,14 @@ namespace Microsoft.Boogie.SMTLib
IList<string> xlabels;
if (CommandLineOptions.Clo.UseLabels) {
labels = GetLabelsInfo();
- xlabels = labels.Select(a => a.Replace("@", "").Replace("+", "")).ToList();
+ if (labels == null)
+ {
+ xlabels = new string[] { };
+ }
+ else
+ {
+ xlabels = labels.Select(a => a.Replace("@", "").Replace("+", "")).ToList();
+ }
}
else {
labels = CalculatePath(handler.StartingProcId());