+ if(all_stack){
+
+ item = xbt_fifo_get_last_item(stack);
+
+ while(depth <= xbt_fifo_size(stack)){
+
+ pair = (mc_pair_stateless_t) xbt_fifo_get_item_content(item);
+ state = (mc_state_t) pair->graph_state;
+
+ if(pair->requests > 0){
+
+ saved_req = MC_state_get_executed_request(state, &value);
+ //XBT_DEBUG("SavedReq->call %u", saved_req->call);
+
+ if(saved_req != NULL){
+ /* because we got a copy of the executed request, we have to fetch the
+ real one, pointed by the request field of the issuer process */
+ req = &saved_req->issuer->request;
+ //XBT_DEBUG("Req->call %u", req->call);
+
+ /* Debug information */
+ if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
+ req_str = MC_request_to_string(req, value);
+ XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state);
+ xbt_free(req_str);
+ }
+
+ }
+
+ SIMIX_request_pre(req, value);
+ MC_wait_for_requests();
+ }
+
+ depth++;
+
+ /* Update statistics */
+ mc_stats_pair->visited_pairs++;
+
+ item = xbt_fifo_get_prev_item(item);
+ }
+
+ }else{
+
+ /* Traverse the stack from the initial state and re-execute the transitions */
+ for (item = xbt_fifo_get_last_item(stack);
+ item != xbt_fifo_get_first_item(stack);
+ item = xbt_fifo_get_prev_item(item)) {
+
+ pair = (mc_pair_stateless_t) xbt_fifo_get_item_content(item);
+ state = (mc_state_t) pair->graph_state;
+
+ if(pair->requests > 0){
+
+ saved_req = MC_state_get_executed_request(state, &value);
+ //XBT_DEBUG("SavedReq->call %u", saved_req->call);
+
+ if(saved_req != NULL){
+ /* because we got a copy of the executed request, we have to fetch the
+ real one, pointed by the request field of the issuer process */
+ req = &saved_req->issuer->request;
+ //XBT_DEBUG("Req->call %u", req->call);
+
+ /* Debug information */
+ if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
+ req_str = MC_request_to_string(req, value);
+ XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state);
+ xbt_free(req_str);
+ }
+
+ }
+
+ SIMIX_request_pre(req, value);
+ MC_wait_for_requests();
+ }
+
+ depth++;
+
+ /* Update statistics */
+ mc_stats_pair->visited_pairs++;
+ }
+ }
+
+ XBT_DEBUG("**** End Replay ****");