Add reset_start_time()

mythril/laser/ethereum/svm.py

@@ -181,6 +181,7 @@ class LaserEVM:
             initial_coverage = self._get_covered_instructions()
 
             self.time = datetime.now()
+            time_handler.reset_start_time()
             log.info(
                 "Starting message call transaction, iteration: {}, {} initial states".format(
                     i, len(self.open_states)

mythril/laser/ethereum/time_handler.py

@@ -7,6 +7,9 @@ class TimeHandler(object, metaclass=Singleton):
         self._start_time = None
         self._transaction_execution_timeout = None
 
+    def reset_start_time(self):
+        self._start_time = int(time.time() * 1000)
+
     def start_execution(self, execution_time: int, transaction_count: int):
         self._start_time = int(time.time() * 1000)
         self._transaction_execution_timeout = execution_time * 1000 // transaction_count