diff --git a/slither/tools/mutator/mutators/abstract_mutator.py b/slither/tools/mutator/mutators/abstract_mutator.py
index c761ac2ee..aaeffc49a 100644
--- a/slither/tools/mutator/mutators/abstract_mutator.py
+++ b/slither/tools/mutator/mutators/abstract_mutator.py
@@ -19,7 +19,6 @@ class AbstractMutator(
 ):  # pylint: disable=too-few-public-methods,too-many-instance-attributes
     NAME = ""
     HELP = ""
-    INVALID_MUTANTS_COUNT = 0
     VALID_MUTANTS_COUNT = 0
     VALID_RR_MUTANTS_COUNT = 0
     VALID_CR_MUTANTS_COUNT = 0
@@ -82,9 +81,8 @@ class AbstractMutator(
         (all_patches) = self._mutate()
         if "patches" not in all_patches:
             logger.debug("No patches found by %s", self.NAME)
-            return ([0,0,0], [0,0,0], self.dont_mutate_line)
-
-        for file in all_patches["patches"]:
+            return ([0, 0, 0], [0, 0, 0], self.dont_mutate_line)
+        for file in all_patches["patches"]: # Note: This should only loop over a single file
             original_txt = self.slither.source_code[file].encode("utf8")
             patches = all_patches["patches"][file]
             patches.sort(key=lambda x: x["start"])
@@ -96,7 +94,6 @@ class AbstractMutator(
                     file,
                     patch,
                     self.test_command,
-                    self.VALID_MUTANTS_COUNT,
                     self.NAME,
                     self.timeout,
                     self.solc_remappings,
diff --git a/slither/tools/mutator/utils/file_handling.py b/slither/tools/mutator/utils/file_handling.py
index ddb3efb50..08eb8f51c 100644
--- a/slither/tools/mutator/utils/file_handling.py
+++ b/slither/tools/mutator/utils/file_handling.py
@@ -1,4 +1,5 @@
 import os
+import traceback
 from typing import Dict, List
 import logging
 
@@ -46,9 +47,13 @@ def transfer_and_delete(files_dict: Dict) -> None:
         logger.error(f"Error transferring content: {e}")
 
 
-def create_mutant_file(file: str, count: int, rule: str) -> None:
+global_counter = {}
+
+def create_mutant_file(file: str, rule: str) -> None:
     """function to create new mutant file"""
     try:
+        if rule not in global_counter:
+            global_counter[rule] = 0
         _, filename = os.path.split(file)
         # Read content from the duplicated file
         with open(file, "r", encoding="utf8") as source_file:
@@ -67,12 +72,13 @@ def create_mutant_file(file: str, count: int, rule: str) -> None:
             + "_"
             + rule
             + "_"
-            + str(count)
+            + str(global_counter[rule])
             + ".sol",
             "w",
             encoding="utf8",
         ) as mutant_file:
             mutant_file.write(content)
+        global_counter[rule] += 1
 
         # reset the file
         with open(duplicated_files[file], "r", encoding="utf8") as duplicated_file:
@@ -83,6 +89,8 @@ def create_mutant_file(file: str, count: int, rule: str) -> None:
 
     except Exception as e:  # pylint: disable=broad-except
         logger.error(f"Error creating mutant: {e}")
+        traceback_str = traceback.format_exc()
+        logger.error(traceback_str)  # Log the stack trace
 
 
 def reset_file(file: str) -> None:
diff --git a/slither/tools/mutator/utils/testing_generated_mutant.py b/slither/tools/mutator/utils/testing_generated_mutant.py
index df670aa79..15ae010dc 100644
--- a/slither/tools/mutator/utils/testing_generated_mutant.py
+++ b/slither/tools/mutator/utils/testing_generated_mutant.py
@@ -63,7 +63,6 @@ def test_patch(  # pylint: disable=too-many-arguments
     file: str,
     patch: Dict,
     command: str,
-    index: int,
     generator_name: str,
     timeout: int,
     mappings: str | None,
@@ -82,7 +81,7 @@ def test_patch(  # pylint: disable=too-many-arguments
         filepath.write(replaced_content)
     if compile_generated_mutant(file, mappings):
         if run_test_cmd(command, file, timeout):
-            create_mutant_file(file, index, generator_name)
+            create_mutant_file(file, generator_name)
             logger.info(
                 red(
                     f"[{generator_name}] Line {patch['line_number']}: '{patch['old_string']}' ==> '{patch['new_string']}' --> VALID"