diff --git a/llvm/tools/llvm-reduce/deltas/Delta.cpp b/llvm/tools/llvm-reduce/deltas/Delta.cpp
--- a/llvm/tools/llvm-reduce/deltas/Delta.cpp
+++ b/llvm/tools/llvm-reduce/deltas/Delta.cpp
@@ -115,16 +115,15 @@
     outs() << "\nNothing to reduce\n";
     return;
   }
+  if (!Test.run(Test.getReducedFilepath())) {
+    outs() << "\nInput isn't interesting! Verify interesting-ness test\n";
+    exit(1);
+  }
 
   std::vector<Chunk> Chunks = {{1, Targets}};
   std::set<Chunk> UninterestingChunks;
   std::unique_ptr<Module> ReducedProgram;
 
-  if (!Test.run(Test.getReducedFilepath())) {
-    outs() << "\nInput isn't interesting! Verify interesting-ness test\n";
-    return;
-  }
-
   if (!increaseGranularity(Chunks)) {
     outs() << "\nAlready at minimum size. Cannot reduce anymore.\n";
     return;