change of some strings

theano/gof/opt.py

@@ -3046,16 +3046,15 @@ class CheckStrackTraceFeature(object):
         if theano.config.check_stack_trace == 'check_all':
             if not check_stack_trace(fgraph, 'all'):
                 raise NotImplementedError(
-                    "Empty stack trace! The optimization that whose"
-                    " stacktrace is empty is" + str(reason))
+                    'Empty stack trace! The optimization that inserted that variable is' + str(reason))
         if theano.config.check_stack_trace == 'check_and_skip':
             if not check_stack_trace(fgraph, 'all'):
                 apply_nodes_to_check = fgraph.apply_nodes
                 for node in apply_nodes_to_check:
                     for output in node.outputs:
                         if not hasattr(output.tag, 'trace') or not output.tag.trace:
-                            output.tag.trace = [[('/dummy/path', 0, 'This is a dummy value! The stack trace of ' +
-                                                 str(reason) + ' was empty!', 'dummy(value)')]]
+                            output.tag.trace = [[('', 0, 'Empty stack trace! The optimization that' +
+                                                 'inserted that variable is ' + str(reason), '')]]
 
 
 class CheckStackTraceOptimization(Optimizer):