Log warning when there are problems to read bounds file

Signed-off-by: Hernan Ponce de Leon <[email protected]>

dartagnan/src/main/java/com/dat3m/dartagnan/program/processing/LoopUnrolling.java

@@ -289,7 +289,7 @@ private Map<Function, Map<CondJump, Integer>> loadLoopBoundsMapFromFile(Program
                         .put(loopJump, bound);
             }
         } catch (IOException e) {
-            // Nothing to be done, filePath is guaranteed to exists when the FileReader is called.
+            logger.warn("Failed to read bounds file: {}", e.getLocalizedMessage());
         }
 
         return loopBoundsMapPerFunction;