-
-/******************************* DFS with visited state *******************************/
-
-xbt_dynar_t visited_pairs;
-
-void set_pair_visited(mc_pair_t pair, int sc){
-
- MC_SET_RAW_MEM;
- mc_visited_pair_t p = NULL;
- p = xbt_new0(s_mc_visited_pair_t, 1);
- p->pair = pair;
- p->search_cycle = sc;
- char hash[41];
- xbt_sha((const char *)&p, hash);
- xbt_dynar_push(visited_pairs, &hash);
- MC_UNSET_RAW_MEM;
-
-}
-
-int visited(mc_pair_t pair, int sc){
-
- MC_SET_RAW_MEM;
-
- mc_visited_pair_t p = NULL;
- p = xbt_new0(s_mc_visited_pair_t, 1);
- p->pair = pair;
- p->search_cycle = sc;
- char hash[41];
- xbt_sha((const char *)&p, hash);
- if(xbt_dynar_member(visited_pairs, hash)){
- MC_UNSET_RAW_MEM;
- return 1;
- }else{
- MC_UNSET_RAW_MEM;
- return 0;
- }
-}
-
-
-void MC_vddfs_stateful_init(xbt_automaton_t a){
-
- XBT_DEBUG("**************************************************");
- XBT_DEBUG("Double-DFS stateful with visited state init");
- XBT_DEBUG("**************************************************");
-
- mc_pair_t mc_initial_pair;
- mc_state_t initial_graph_state;
- smx_process_t process;
- mc_snapshot_t init_snapshot;
-
- MC_wait_for_requests();
-
- MC_SET_RAW_MEM;
-
- init_snapshot = xbt_new0(s_mc_snapshot_t, 1);
-
- initial_graph_state = MC_state_pair_new();
- xbt_swag_foreach(process, simix_global->process_list){
- if(MC_process_is_enabled(process)){
- MC_state_interleave_process(initial_graph_state, process);
- }
- }
-
- visited_pairs = xbt_dynar_new(sizeof(char *), NULL);
- reached_pairs = xbt_dynar_new(sizeof(mc_pair_reached_t), NULL);
-
- MC_take_snapshot(init_snapshot);
-
- MC_UNSET_RAW_MEM;
-
- unsigned int cursor = 0;
- xbt_state_t state = NULL;
-
- xbt_dynar_foreach(a->states, cursor, state){
- if(state->type == -1){
-
- MC_SET_RAW_MEM;
- mc_initial_pair = new_pair(init_snapshot, initial_graph_state, state);
- xbt_fifo_unshift(mc_stack_liveness_stateful, mc_initial_pair);
- MC_UNSET_RAW_MEM;
-
- if(cursor == 0){
- MC_vddfs_stateful(a, 0, 0);
- }else{
- MC_restore_snapshot(init_snapshot);
- MC_UNSET_RAW_MEM;
- MC_vddfs_stateful(a, 0, 0);
- }
- }else{
- if(state->type == 2){
-
- MC_SET_RAW_MEM;
- mc_initial_pair = new_pair(init_snapshot, initial_graph_state, state);
- xbt_fifo_unshift(mc_stack_liveness_stateful, mc_initial_pair);
- MC_UNSET_RAW_MEM;
-
- if(cursor == 0){
- MC_vddfs_stateful(a, 1, 0);
- }else{
- MC_restore_snapshot(init_snapshot);
- MC_UNSET_RAW_MEM;
- MC_vddfs_stateful(a, 1, 0);
- }
- }
- }
- }
-}
-
-
-void MC_vddfs_stateful(xbt_automaton_t a, int search_cycle, int restore){
-
- smx_process_t process = NULL;
-
-
- if(xbt_fifo_size(mc_stack_liveness_stateful) == 0)
- return;
-
- if(restore == 1){
- MC_restore_snapshot(((mc_pair_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack_liveness_stateful)))->system_state);
- MC_UNSET_RAW_MEM;
- }
-
-
- /* Get current state */
- mc_pair_t current_pair = (mc_pair_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack_liveness_stateful));
-
- if(restore == 1){
- xbt_swag_foreach(process, simix_global->process_list){
- if(MC_process_is_enabled(process)){
- MC_state_interleave_process(current_pair->graph_state, process);
- }
- }
- }
-
- XBT_DEBUG("********************* ( Depth = %d, search_cycle = %d )", xbt_fifo_size(mc_stack_liveness_stateful), search_cycle);
- XBT_DEBUG("Pair : graph=%p, automaton=%p(%s), %u interleave", current_pair->graph_state, current_pair->automaton_state, current_pair->automaton_state->id,MC_state_interleave_size(current_pair->graph_state));
-
- a->current_state = current_pair->automaton_state;
-
- mc_stats_pair->visited_pairs++;
-
- int value;
- mc_state_t next_graph_state = NULL;
- smx_req_t req = NULL;
- char *req_str;
-
-
- xbt_transition_t transition_succ;
- unsigned int cursor;
- int res;
-
- xbt_dynar_t successors = NULL;
-
- mc_pair_t next_pair = NULL;
- mc_snapshot_t next_snapshot = NULL;
- mc_snapshot_t current_snapshot = NULL;
- mc_pair_t pair_succ = NULL;
-
- MC_SET_RAW_MEM;
- successors = xbt_dynar_new(sizeof(mc_pair_t), NULL);
- MC_UNSET_RAW_MEM;
-
-
- while((req = MC_state_get_request(current_pair->graph_state, &value)) != NULL){
-
- MC_SET_RAW_MEM;
- current_snapshot = xbt_new0(s_mc_snapshot_t, 1);
- MC_take_snapshot(current_snapshot);
- MC_UNSET_RAW_MEM;
-
-
- /* Debug information */
- if(XBT_LOG_ISENABLED(mc_liveness, xbt_log_priority_debug)){
- req_str = MC_request_to_string(req, value);
- XBT_DEBUG("Execute: %s", req_str);
- xbt_free(req_str);
- }
-
- MC_state_set_executed_request(current_pair->graph_state, req, value);
-
- /* Answer the request */
- SIMIX_request_pre(req, value);
-
- /* Wait for requests (schedules processes) */
- MC_wait_for_requests();
-
-
- /* Create the new expanded graph_state */
- MC_SET_RAW_MEM;
-
- next_graph_state = MC_state_pair_new();
-
- /* Get enabled process and insert it in the interleave set of the next graph_state */
- xbt_swag_foreach(process, simix_global->process_list){
- if(MC_process_is_enabled(process)){
- MC_state_interleave_process(next_graph_state, process);
- }
- }
-
- next_snapshot = xbt_new0(s_mc_snapshot_t, 1);
- MC_take_snapshot(next_snapshot);
-
- xbt_dynar_reset(successors);
-
- MC_UNSET_RAW_MEM;
-
- cursor = 0;
- xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){
-
- res = MC_automaton_evaluate_label(a, transition_succ->label);
-
- if(res == 1){
- MC_SET_RAW_MEM;
- next_pair = new_pair(next_snapshot,next_graph_state, transition_succ->dst);
- xbt_dynar_push(successors, &next_pair);
- MC_UNSET_RAW_MEM;
- }
- }
-
- cursor = 0;
- xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){
-
- res = MC_automaton_evaluate_label(a, transition_succ->label);
-
- if(res == 2){
- MC_SET_RAW_MEM;
- next_pair = new_pair(next_snapshot,next_graph_state, transition_succ->dst);
- xbt_dynar_push(successors, &next_pair);
- MC_UNSET_RAW_MEM;
- }
- }
-
-
-
- if(xbt_dynar_length(successors) == 0){
-
- MC_SET_RAW_MEM;
- next_pair = new_pair(next_snapshot, next_graph_state, current_pair->automaton_state);
- xbt_dynar_push(successors, &next_pair);
- MC_UNSET_RAW_MEM;
-
- }
-
-
- //XBT_DEBUG("Successors length %lu", xbt_dynar_length(successors));
-
- cursor = 0;
-
- xbt_dynar_foreach(successors, cursor, pair_succ){
-
- /*XBT_DEBUG("Search reached pair %p : graph=%p, automaton=%p", pair_succ, pair_succ->graph_state, pair_succ->automaton_state);
- char hash[41];
- XBT_DEBUG("Const char pair %s", (const char *)&pair_succ);
- xbt_sha((const char *)&pair_succ, hash);
- XBT_DEBUG("Hash pair_succ %s", hash);*/
-
- if((search_cycle == 1) && (reached(a) == 1)){
- XBT_INFO("*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*");
- XBT_INFO("| ACCEPTANCE CYCLE |");
- XBT_INFO("*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*");
- XBT_INFO("Counter-example that violates formula :");
- MC_show_stack_liveness_stateful(mc_stack_liveness_stateful);
- MC_dump_stack_liveness_stateful(mc_stack_liveness_stateful);
- MC_print_statistics_pairs(mc_stats_pair);
- exit(0);
- }
-
- XBT_DEBUG("Search visited pair %p : graph %p, automaton %p", pair_succ, pair_succ->graph_state, pair_succ->automaton_state);
-
- if(visited(pair_succ, search_cycle) == 0){
-
- //mc_stats_pair->executed_transitions++;
- set_pair_visited(pair_succ, search_cycle);
-
- MC_SET_RAW_MEM;
- xbt_fifo_unshift(mc_stack_liveness_stateful, pair_succ);
- MC_UNSET_RAW_MEM;
-
- MC_vddfs_stateful(a, search_cycle, 0);
-
- //XBT_DEBUG("Pair (graph=%p, automaton=%p) expanded", pair_succ->graph_state, pair_succ->automaton_state);
-
- if((search_cycle == 0) && ((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2))){
-
- XBT_DEBUG("Acceptance pair : graph=%p, automaton=%p(%s)", pair_succ->graph_state, pair_succ->automaton_state, pair_succ->automaton_state->id);
- int res = set_pair_reached(a);
-
- MC_SET_RAW_MEM;
- xbt_fifo_unshift(mc_stack_liveness_stateful, pair_succ);
- MC_UNSET_RAW_MEM;
-
- MC_vddfs_stateful(a, 1, 1);
-
- if(res){
- MC_SET_RAW_MEM;
- xbt_dynar_pop(reached_pairs, NULL);
- MC_UNSET_RAW_MEM;
- }
-
- }
-
- }else{
-
- XBT_DEBUG("Pair already visited !");
- }
-
- }
-
-
- if(MC_state_interleave_size(current_pair->graph_state) > 0){
- MC_restore_snapshot(current_snapshot);
- MC_UNSET_RAW_MEM;
-
- }
- }
-
-
- MC_SET_RAW_MEM;
- xbt_fifo_shift(mc_stack_liveness_stateful);
- XBT_DEBUG("Pair (graph=%p, automaton =%p) shifted in stack", current_pair->graph_state, current_pair->automaton_state);
- MC_UNSET_RAW_MEM;
-
-
-
-}
-
-
-
