-#include "private.h"
-#include "unistd.h"
+/* Copyright (c) 2008-2012 Da SimGrid Team. All rights reserved. */
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_dfs, mc,
- "Logging specific to MC DFS algorithm");
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
-xbt_dynar_t initial_pairs = NULL;
-int max_pair = 0;
-xbt_dynar_t visited_pairs;
-xbt_dynar_t reached_pairs;
+#include "mc_private.h"
+#include <unistd.h>
+#include <sys/wait.h>
-mc_pairs_t new_pair(mc_snapshot_t sn, mc_state_t sg, xbt_state_t st){
- mc_pairs_t p = NULL;
- p = xbt_new0(s_mc_pairs_t, 1);
- p->system_state = sn;
- p->automaton_state = st;
- p->graph_state = sg;
- p->num = max_pair;
- max_pair++;
- return p;
-
-}
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_liveness, mc,
+ "Logging specific to algorithms for liveness properties verification");
-void set_pair_visited(mc_state_t gs, xbt_state_t as, int sc){
-
- //XBT_DEBUG("New visited pair : graph=%p, automaton=%p", gs, as);
- MC_SET_RAW_MEM;
- mc_visited_pairs_t p = NULL;
- p = xbt_new0(s_mc_visited_pairs_t, 1);
- p->graph_state = gs;
- p->automaton_state = as;
- p->search_cycle = sc;
- xbt_dynar_push(visited_pairs, &p);
- //XBT_DEBUG("New visited pair , length of visited pairs : %lu", xbt_dynar_length(visited_pairs));
- MC_UNSET_RAW_MEM;
+xbt_dynar_t reached_pairs;
+xbt_dynar_t visited_pairs;
+xbt_dynar_t successors;
+
+int create_dump(int pair)
+{
+ // Try to enable core dumps
+ struct rlimit core_limit;
+ core_limit.rlim_cur = RLIM_INFINITY;
+ core_limit.rlim_max = RLIM_INFINITY;
+
+ if(setrlimit(RLIMIT_CORE, &core_limit) < 0)
+ fprintf(stderr, "setrlimit: %s\nWarning: core dumps may be truncated or non-existant\n", strerror(errno));
+
+ int status;
+ switch(fork()){
+ case 0:
+ // We are the child process -- run the actual program
+ xbt_abort();
+ break;
+
+ case -1:
+ // An error occurred, shouldn't happen
+ perror("fork");
+ return -1;
+
+ default:
+ // We are the parent process -- wait for the child process to exit
+ if(wait(&status) < 0)
+ perror("wait");
+ if(WIFSIGNALED(status) && WCOREDUMP(status)){
+ char *core_name = xbt_malloc(20);
+ sprintf(core_name,"core_%d", pair);
+ rename("core", core_name);
+ free(core_name);
+ }
+ }
- //XBT_DEBUG("New visited pair , length of visited pairs : %lu", xbt_dynar_length(visited_pairs));
+ return 0;
}
-int reached(mc_state_t gs, xbt_state_t as ){
+int reached(xbt_state_t st){
- mc_reached_pairs_t rp = NULL;
- unsigned int c= 0;
- unsigned int i;
- int different_process;
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
MC_SET_RAW_MEM;
- xbt_dynar_foreach(reached_pairs, c, rp){
- if(rp->automaton_state == as){
- different_process=0;
- for(i=0; i < gs->max_pid; i++){
- if(gs->proc_status[i].state != rp->graph_state->proc_status[i].state){
- different_process++;
- }
- }
- if(different_process==0){
- MC_UNSET_RAW_MEM;
- XBT_DEBUG("Pair (graph=%p, automaton=%p(%s)) already reached (graph=%p)!", gs, as, as->id, rp->graph_state);
- return 1;
- }
- /* XBT_DEBUG("Pair (graph=%p, automaton=%p(%s)) already reached !", gs, as, as->id); */
- /* return 1; */
- }
+
+ mc_pair_reached_t new_pair = NULL;
+ new_pair = xbt_new0(s_mc_pair_reached_t, 1);
+ new_pair->nb = xbt_dynar_length(reached_pairs) + 1;
+ new_pair->automaton_state = st;
+ new_pair->prop_ato = xbt_dynar_new(sizeof(int), NULL);
+ new_pair->system_state = MC_take_snapshot();
+
+ /* Get values of propositional symbols */
+ int res;
+ int_f_void_t f;
+ unsigned int cursor = 0;
+ xbt_propositional_symbol_t ps = NULL;
+ xbt_dynar_foreach(_mc_property_automaton->propositional_symbols, cursor, ps){
+ f = (int_f_void_t)ps->function;
+ res = (*f)();
+ xbt_dynar_push_as(new_pair->prop_ato, int, res);
}
+
MC_UNSET_RAW_MEM;
- return 0;
-}
-
-void set_pair_reached(mc_state_t gs, xbt_state_t as){
+
+ if(xbt_dynar_is_empty(reached_pairs)/* || !compare*/){
- //XBT_DEBUG("Set pair (graph=%p, automaton=%p) reached ", gs, as);
- //if(reached(gs, as) == 0){
MC_SET_RAW_MEM;
- mc_reached_pairs_t p = NULL;
- p = xbt_new0(s_mc_reached_pairs_t, 1);
- p->graph_state = gs;
- p->automaton_state = as;
- xbt_dynar_push(reached_pairs, &p);
- XBT_DEBUG("New reached pair : graph=%p, automaton=%p(%s)", gs, as, as->id);
+ /* New pair reached */
+ xbt_dynar_push(reached_pairs, &new_pair);
MC_UNSET_RAW_MEM;
- //}
-}
-
-int visited(mc_state_t gs, xbt_state_t as, int sc){
- unsigned int c = 0;
- mc_visited_pairs_t p = NULL;
- unsigned int i;
- int different_process;
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+
+ return 0;
- //XBT_DEBUG("Visited pair length : %lu", xbt_dynar_length(visited_pairs));
+ }else{
- MC_SET_RAW_MEM;
- xbt_dynar_foreach(visited_pairs, c, p){
- //XBT_DEBUG("Test pair visited");
- //sleep(1);
- if((p->automaton_state == as) && (p->search_cycle == sc)){
- different_process=0;
- for(i=0; i < gs->max_pid; i++){
- if(gs->proc_status[i].state != p->graph_state->proc_status[i].state){
- different_process++;
- }
- }
- if(different_process==0){
- MC_UNSET_RAW_MEM;
- return 1;
+ MC_SET_RAW_MEM;
+
+ cursor = 0;
+ mc_pair_reached_t pair_test = NULL;
+
+ xbt_dynar_foreach(reached_pairs, cursor, pair_test){
+ if(XBT_LOG_ISENABLED(mc_liveness, xbt_log_priority_debug))
+ XBT_DEBUG("****** Pair reached #%d ******", pair_test->nb);
+ if(automaton_state_compare(pair_test->automaton_state, st) == 0){
+ if(propositional_symbols_compare_value(pair_test->prop_ato, new_pair->prop_ato) == 0){
+ if(snapshot_compare(new_pair->system_state, pair_test->system_state) == 0){
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
+ return 1;
+ }
+ }else{
+ XBT_DEBUG("Different values of propositional symbols");
+ }
+ }else{
+ XBT_DEBUG("Different automaton state");
}
}
- }
- MC_UNSET_RAW_MEM;
- return 0;
+ /* New pair reached */
+ xbt_dynar_push(reached_pairs, &new_pair);
+
+ MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+
+ compare = 0;
+
+ return 0;
+
+ }
}
-void MC_dfs_init(xbt_automaton_t a){
- XBT_DEBUG("**************************************************");
- XBT_DEBUG("DFS init");
- XBT_DEBUG("**************************************************");
-
- mc_pairs_t mc_initial_pair;
- mc_state_t initial_graph_state;
- smx_process_t process;
- mc_snapshot_t init_snapshot;
-
- MC_wait_for_requests();
+void set_pair_reached(xbt_state_t st){
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
MC_SET_RAW_MEM;
- init_snapshot = xbt_new0(s_mc_snapshot_t, 1);
+ mc_pair_reached_t pair = NULL;
+ pair = xbt_new0(s_mc_pair_reached_t, 1);
+ pair->nb = xbt_dynar_length(reached_pairs) + 1;
+ pair->automaton_state = st;
+ pair->prop_ato = xbt_dynar_new(sizeof(int), NULL);
+ pair->system_state = MC_take_snapshot();
- 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);
- }
+ /* Get values of propositional symbols */
+ unsigned int cursor = 0;
+ xbt_propositional_symbol_t ps = NULL;
+ int res;
+ int_f_void_t f;
+
+ xbt_dynar_foreach(_mc_property_automaton->propositional_symbols, cursor, ps){
+ f = (int_f_void_t)ps->function;
+ res = (*f)();
+ xbt_dynar_push_as(pair->prop_ato, int, res);
}
- visited_pairs = xbt_dynar_new(sizeof(mc_visited_pairs_t), NULL);
- reached_pairs = xbt_dynar_new(sizeof(mc_reached_pairs_t), NULL);
+ xbt_dynar_push(reached_pairs, &pair);
+
+ MC_UNSET_RAW_MEM;
- MC_take_snapshot(init_snapshot);
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+
+}
- MC_UNSET_RAW_MEM;
+int visited(xbt_state_t st){
- /* unsigned int cursor = 0; */
- /* xbt_state_t state = NULL; */
- /* int nb_init_state = 0; */
+ if(_sg_mc_visited == 0)
+ return 0;
- /* xbt_dynar_foreach(a->states, cursor, state){ */
- /* if(state->type == -1){ */
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
- /* MC_SET_RAW_MEM; */
- /* mc_initial_pair = new_pair(init_snapshot, initial_graph_state, state); */
+ MC_SET_RAW_MEM;
- /* xbt_fifo_unshift(mc_snapshot_stack, mc_initial_pair); */
+ mc_pair_visited_t new_pair = NULL;
+ new_pair = xbt_new0(s_mc_pair_visited_t, 1);
+ new_pair->automaton_state = st;
+ new_pair->prop_ato = xbt_dynar_new(sizeof(int), NULL);
+ new_pair->system_state = MC_take_snapshot();
+
+ /* Get values of propositional symbols */
+ int res;
+ int_f_void_t f;
+ unsigned int cursor = 0;
+ xbt_propositional_symbol_t ps = NULL;
+ xbt_dynar_foreach(_mc_property_automaton->propositional_symbols, cursor, ps){
+ f = (int_f_void_t)ps->function;
+ res = (*f)();
+ xbt_dynar_push_as(new_pair->prop_ato, int, res);
+ }
+
+ MC_UNSET_RAW_MEM;
+
+ if(xbt_dynar_is_empty(visited_pairs)){
- /* XBT_DEBUG("**************************************************"); */
- /* XBT_DEBUG("Initial state=%p ", mc_initial_pair); */
+ MC_SET_RAW_MEM;
+ /* New pair visited */
+ xbt_dynar_push(visited_pairs, &new_pair);
+ MC_UNSET_RAW_MEM;
- /* MC_UNSET_RAW_MEM; */
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+
+ return 0;
- /* set_pair_visited(mc_initial_pair->graph_state, mc_initial_pair->automaton_state, 0); */
-
- /* if(nb_init_state == 0) */
- /* MC_dfs(a, 0, 0); */
- /* else */
- /* MC_dfs(a, 0, 1); */
-
- /* nb_init_state++; */
- /* } */
- /* } */
+ }else{
- /* regarder dans l'automate toutes les transitions activables grâce à l'état initial du système
- -> donnera les états initiaux de la propriété consistants avec l'état initial du système */
+ MC_SET_RAW_MEM;
+
+ cursor = 0;
+ mc_pair_visited_t pair_test = NULL;
+
+ xbt_dynar_foreach(visited_pairs, cursor, pair_test){
+ if(XBT_LOG_ISENABLED(mc_liveness, xbt_log_priority_debug))
+ XBT_DEBUG("****** Pair visited #%d ******", cursor + 1);
+ if(automaton_state_compare(pair_test->automaton_state, st) == 0){
+ if(propositional_symbols_compare_value(pair_test->prop_ato, new_pair->prop_ato) == 0){
+ if(snapshot_compare(new_pair->system_state, pair_test->system_state) == 0){
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
+ return 1;
+ }
+ }else{
+ XBT_DEBUG("Different values of propositional symbols");
+ }
+ }else{
+ XBT_DEBUG("Different automaton state");
+ }
+ }
- unsigned int cursor = 0;
- unsigned int cursor2 = 0;
- xbt_state_t state = NULL;
- int res;
- xbt_transition_t transition_succ;
- xbt_dynar_t successors = xbt_dynar_new(sizeof(mc_pairs_t), NULL);
- xbt_dynar_t elses = xbt_dynar_new(sizeof(mc_pairs_t), NULL);
- mc_pairs_t pair_succ;
+ if(xbt_dynar_length(visited_pairs) == _sg_mc_visited){
+ xbt_dynar_remove_at(visited_pairs, 0, NULL);
+ }
- xbt_dynar_foreach(a->states, cursor, state){
- if(state->type == -1){
- xbt_dynar_foreach(state->out, cursor2, transition_succ){
- res = MC_automaton_evaluate_label(a, transition_succ->label);
-
- if(res == 1){
-
- MC_SET_RAW_MEM;
+ /* New pair visited */
+ xbt_dynar_push(visited_pairs, &new_pair);
+
+ MC_UNSET_RAW_MEM;
- mc_initial_pair = new_pair(init_snapshot, initial_graph_state, transition_succ->dst);
- xbt_dynar_push(successors, &mc_initial_pair);
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+
+ return 0;
+
+ }
+}
- MC_UNSET_RAW_MEM;
+void MC_pair_delete(mc_pair_t pair){
+ xbt_free(pair->graph_state->proc_status);
+ xbt_free(pair->graph_state);
+ xbt_free(pair);
+}
- }else{
- if(res == 2){
-
- MC_SET_RAW_MEM;
- mc_initial_pair = new_pair(init_snapshot, initial_graph_state, transition_succ->dst);
- xbt_dynar_push(elses, &mc_initial_pair);
- MC_UNSET_RAW_MEM;
- }
- }
+int MC_automaton_evaluate_label(xbt_exp_label_t l){
+
+ switch(l->type){
+ case 0 : {
+ int left_res = MC_automaton_evaluate_label(l->u.or_and.left_exp);
+ int right_res = MC_automaton_evaluate_label(l->u.or_and.right_exp);
+ return (left_res || right_res);
+ }
+ case 1 : {
+ int left_res = MC_automaton_evaluate_label(l->u.or_and.left_exp);
+ int right_res = MC_automaton_evaluate_label(l->u.or_and.right_exp);
+ return (left_res && right_res);
+ }
+ case 2 : {
+ int res = MC_automaton_evaluate_label(l->u.exp_not);
+ return (!res);
+ }
+ case 3 : {
+ unsigned int cursor = 0;
+ xbt_propositional_symbol_t p = NULL;
+ int_f_void_t f;
+ xbt_dynar_foreach(_mc_property_automaton->propositional_symbols, cursor, p){
+ if(strcmp(p->pred, l->u.predicat) == 0){
+ f = (int_f_void_t)p->function;
+ return (*f)();
}
}
+ return -1;
}
+ case 4 : {
+ return 2;
+ }
+ default :
+ return -1;
+ }
+}
-
- cursor = 0;
- xbt_dynar_foreach(successors, cursor, pair_succ){
- MC_SET_RAW_MEM;
-
- xbt_fifo_unshift(mc_snapshot_stack, pair_succ);
-
- XBT_DEBUG("**************************************************");
- XBT_DEBUG("Initial pair=%p (graph=%p, automaton=%p(%s)) ", pair_succ, pair_succ->graph_state, pair_succ->automaton_state,pair_succ->automaton_state->id );
-
- MC_UNSET_RAW_MEM;
- set_pair_visited(pair_succ->graph_state, pair_succ->automaton_state, 0);
+/********************* Double-DFS stateless *******************/
- if(cursor == 0){
- MC_dfs(a, 0, 0);
- }else{
- MC_dfs(a, 0, 1);
- }
+void pair_visited_free(mc_pair_visited_t pair){
+ if(pair){
+ pair->automaton_state = NULL;
+ xbt_dynar_free(&(pair->prop_ato));
+ MC_free_snapshot(pair->system_state);
+ xbt_free(pair);
}
+}
- cursor = 0;
- xbt_dynar_foreach(elses, cursor, pair_succ){
- MC_SET_RAW_MEM;
-
- xbt_fifo_unshift(mc_snapshot_stack, pair_succ);
+void pair_visited_free_voidp(void *p){
+ pair_visited_free((mc_pair_visited_t) * (void **) p);
+}
- XBT_DEBUG("**************************************************");
- XBT_DEBUG("Initial pair=%p (graph=%p, automaton=%p(%s)) ", pair_succ, pair_succ->graph_state, pair_succ->automaton_state,pair_succ->automaton_state->id );
+void pair_stateless_free(mc_pair_stateless_t pair){
+ xbt_free(pair->graph_state->system_state);
+ xbt_free(pair->graph_state->proc_status);
+ xbt_free(pair->graph_state);
+ xbt_free(pair);
+}
- MC_UNSET_RAW_MEM;
+void pair_stateless_free_voidp(void *p){
+ pair_stateless_free((mc_pair_stateless_t) * (void **) p);
+}
- set_pair_visited(pair_succ->graph_state, pair_succ->automaton_state, 0);
+mc_pair_stateless_t new_pair_stateless(mc_state_t sg, xbt_state_t st, int r){
+ mc_pair_stateless_t p = NULL;
+ p = xbt_new0(s_mc_pair_stateless_t, 1);
+ p->automaton_state = st;
+ p->graph_state = sg;
+ p->requests = r;
+ mc_stats_pair->expanded_pairs++;
+ return p;
+}
- if((xbt_dynar_length(successors) == 0) && (cursor == 0)){
- MC_dfs(a, 0, 0);
- }else{
- MC_dfs(a, 0, 1);
- }
+void pair_reached_free(mc_pair_reached_t pair){
+ if(pair){
+ pair->automaton_state = NULL;
+ xbt_dynar_free(&(pair->prop_ato));
+ MC_free_snapshot(pair->system_state);
+ xbt_free(pair);
}
-
}
+void pair_reached_free_voidp(void *p){
+ pair_reached_free((mc_pair_reached_t) * (void **) p);
+}
-void MC_dfs(xbt_automaton_t a, int search_cycle, int restore){
-
- smx_process_t process = NULL;
+void MC_ddfs_init(void){
+ initial_state_liveness->raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
- if(xbt_fifo_size(mc_snapshot_stack) == 0)
- return;
+ XBT_DEBUG("**************************************************");
+ XBT_DEBUG("Double-DFS init");
+ XBT_DEBUG("**************************************************");
- if(restore == 1){
- MC_restore_snapshot(((mc_pairs_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_snapshot_stack)))->system_state);
- MC_UNSET_RAW_MEM;
- }
+ mc_pair_stateless_t mc_initial_pair = NULL;
+ mc_state_t initial_graph_state = NULL;
+ smx_process_t process;
- //XBT_DEBUG("Lpv length after restore snapshot: %lu", xbt_dynar_length(visited_pairs));
+
+ MC_wait_for_requests();
- /* Get current state */
- mc_pairs_t current_pair = (mc_pairs_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_snapshot_stack));
+ MC_SET_RAW_MEM;
- if(restore==1){
- xbt_swag_foreach(process, simix_global->process_list){
- if(MC_process_is_enabled(process)){
- //XBT_DEBUG("Pid : %lu", process->pid);
- MC_state_interleave_process(current_pair->graph_state, process);
- }
+ 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);
}
}
- XBT_DEBUG("************************************************** ( search_cycle = %d )", search_cycle);
- XBT_DEBUG("State : 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));
- //XBT_DEBUG("Restore : %d", restore);
-
- //XBT_DEBUG("Reached pairs : %lu", xbt_dynar_length(reached_pairs));
+ reached_pairs = xbt_dynar_new(sizeof(mc_pair_reached_t), pair_reached_free_voidp);
+ visited_pairs = xbt_dynar_new(sizeof(mc_pair_visited_t), pair_visited_free_voidp);
+ successors = xbt_dynar_new(sizeof(mc_pair_stateless_t), NULL);
+
+ /* Save the initial state */
+ initial_state_liveness->snapshot = MC_take_snapshot();
+
+ MC_UNSET_RAW_MEM;
- //sleep(1);
+ unsigned int cursor = 0;
+ xbt_state_t state;
- mc_stats_pair->visited_pairs++;
+ xbt_dynar_foreach(_mc_property_automaton->states, cursor, state){
+ if(state->type == -1){
+
+ MC_SET_RAW_MEM;
+ mc_initial_pair = new_pair_stateless(initial_graph_state, state, MC_state_interleave_size(initial_graph_state));
+ xbt_fifo_unshift(mc_stack_liveness, mc_initial_pair);
+ MC_UNSET_RAW_MEM;
+
+ if(cursor != 0){
+ MC_restore_snapshot(initial_state_liveness->snapshot);
+ MC_UNSET_RAW_MEM;
+ }
- int value;
- mc_state_t next_graph_state = NULL;
- smx_req_t req = NULL;
- char *req_str;
+ MC_ddfs(0);
- mc_pairs_t pair_succ;
- xbt_transition_t transition_succ;
- unsigned int cursor;
- int res;
- //int enabled_transition = 0;
+ }else{
+ if(state->type == 2){
+
+ MC_SET_RAW_MEM;
+ mc_initial_pair = new_pair_stateless(initial_graph_state, state, MC_state_interleave_size(initial_graph_state));
+ xbt_fifo_unshift(mc_stack_liveness, mc_initial_pair);
+ MC_UNSET_RAW_MEM;
- xbt_dynar_t successors = xbt_dynar_new(sizeof(mc_pairs_t), NULL);
- xbt_dynar_t elses = xbt_dynar_new(sizeof(mc_pairs_t), NULL);
+ set_pair_reached(state);
- mc_pairs_t next_pair;
- mc_snapshot_t next_snapshot;
- mc_snapshot_t current_snapshot;
+ if(cursor != 0){
+ MC_restore_snapshot(initial_state_liveness->snapshot);
+ MC_UNSET_RAW_MEM;
+ }
+ MC_ddfs(1);
- while((req = MC_state_get_request(current_pair->graph_state, &value)) != NULL){
+ }
+ }
+ }
+ if(initial_state_liveness->raw_mem_set)
MC_SET_RAW_MEM;
- current_snapshot = xbt_new0(s_mc_snapshot_t, 1);
- MC_take_snapshot(current_snapshot);
+ else
MC_UNSET_RAW_MEM;
-
-
- /* Debug information */
- if(XBT_LOG_ISENABLED(mc_dfs, 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();
+void MC_ddfs(int search_cycle){
+ //initial_state_liveness->raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
- /* Create the new expanded graph_state */
- MC_SET_RAW_MEM;
+ smx_process_t process;
+ mc_pair_stateless_t current_pair = NULL;
- 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)){
- XBT_DEBUG("Pid : %lu", process->pid);
- MC_state_interleave_process(next_graph_state, process);
- }
- }
+ if(xbt_fifo_size(mc_stack_liveness) == 0)
+ return;
- next_snapshot = xbt_new0(s_mc_snapshot_t, 1);
- MC_take_snapshot(next_snapshot);
-
- MC_UNSET_RAW_MEM;
- xbt_dynar_reset(successors);
- xbt_dynar_reset(elses);
-
- cursor = 0;
- xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){
+ /* Get current pair */
+ current_pair = (mc_pair_stateless_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack_liveness));
- res = MC_automaton_evaluate_label(a, transition_succ->label);
+ /* Update current state in buchi automaton */
+ _mc_property_automaton->current_state = current_pair->automaton_state;
- MC_SET_RAW_MEM;
- next_pair = new_pair(next_snapshot,next_graph_state, transition_succ->dst);
+
+ XBT_DEBUG("********************* ( Depth = %d, search_cycle = %d )", xbt_fifo_size(mc_stack_liveness), search_cycle);
+
+ mc_stats_pair->visited_pairs++;
- //XBT_DEBUG("Next pair : %p", next_pair);
-
- if(res == 1){ // enabled transition in automaton
- xbt_dynar_push(successors, &next_pair);
- mc_stats_pair->expanded_pairs++;
- }else{
- if(res == 2){ // enabled transition in automaton
- xbt_dynar_push(elses, &next_pair);
- mc_stats_pair->expanded_pairs++;
- }
- }
+ //sleep(1);
- MC_UNSET_RAW_MEM;
- }
+ int value;
+ mc_state_t next_graph_state = NULL;
+ smx_simcall_t req = NULL;
+ char *req_str;
+
+ xbt_transition_t transition_succ;
+ unsigned int cursor = 0;
+ int res;
+
+ mc_pair_stateless_t next_pair = NULL;
+ mc_pair_stateless_t pair_succ;
+
+ mc_pair_stateless_t remove_pair;
+ mc_pair_reached_t remove_pair_reached;
+
+ if(xbt_fifo_size(mc_stack_liveness) < _sg_mc_max_depth){
+
+ if(current_pair->requests > 0){
+ while((req = MC_state_get_request(current_pair->graph_state, &value)) != NULL){
- if(xbt_dynar_length(successors) == 0){
+ /* Debug information */
+
+ req_str = MC_request_to_string(req, value);
+ XBT_DEBUG("Execute: %s", req_str);
+ xbt_free(req_str);
- MC_SET_RAW_MEM;
- next_pair = new_pair(next_snapshot, next_graph_state, current_pair->automaton_state);
- xbt_dynar_push(successors, &next_pair);
- mc_stats_pair->expanded_pairs++;
- MC_UNSET_RAW_MEM;
-
- }
+ MC_state_set_executed_request(current_pair->graph_state, req, value);
+ /* Answer the request */
+ SIMIX_simcall_pre(req, value);
- cursor = 0;
- xbt_dynar_foreach(successors, cursor, pair_succ){
-
- //XBT_DEBUG("Search visited pair : graph=%p, automaton=%p", pair_succ->graph_state, pair_succ->automaton_state);
-
- if((search_cycle == 1) && (reached(pair_succ->graph_state, pair_succ->automaton_state) == 1)){
- XBT_INFO("*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*");
- XBT_INFO("| ACCEPTANCE CYCLE |");
- XBT_INFO("*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*");
- XBT_INFO("Counter-example that violates formula :");
- MC_show_snapshot_stack(mc_snapshot_stack);
- MC_dump_snapshot_stack(mc_snapshot_stack);
- MC_print_statistics_pairs(mc_stats_pair);
- exit(0);
- }
-
- if(visited(pair_succ->graph_state, pair_succ->automaton_state, search_cycle) == 0){
+ /* Wait for requests (schedules processes) */
+ MC_wait_for_requests();
- //XBT_DEBUG("Unvisited pair !");
+ MC_SET_RAW_MEM;
- mc_stats_pair->executed_transitions++;
-
- MC_SET_RAW_MEM;
- xbt_fifo_unshift(mc_snapshot_stack, pair_succ);
- MC_UNSET_RAW_MEM;
+ /* Create the new expanded graph_state */
+ next_graph_state = MC_state_pair_new();
- set_pair_visited(pair_succ->graph_state, pair_succ->automaton_state, search_cycle);
- MC_dfs(a, search_cycle, 0);
+ /* 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)){
+ XBT_DEBUG("Process %lu enabled with simcall : %d", process->pid, (&process->simcall)->call);
+ }
+ }
- if((search_cycle == 0) && (current_pair->automaton_state->type == 1)){
+ xbt_swag_foreach(process, simix_global->process_list){
+ if(MC_process_is_enabled(process)){
+ MC_state_interleave_process(next_graph_state, process);
+ }
+ }
- MC_restore_snapshot(current_pair->system_state);
- MC_UNSET_RAW_MEM;
-
- xbt_swag_foreach(process, simix_global->process_list){
- if(MC_process_is_enabled(process)){
- //XBT_DEBUG("Pid : %lu", process->pid);
- MC_state_interleave_process(current_pair->graph_state, process);
- }
- }
-
- set_pair_reached(current_pair->graph_state, current_pair->automaton_state);
- XBT_DEBUG("Acceptance pair : graph=%p, automaton=%p(%s)", current_pair->graph_state, current_pair->automaton_state, current_pair->automaton_state->id);
- MC_dfs(a, 1, 1);
-
- }
- }
- }
+ xbt_dynar_reset(successors);
- cursor = 0;
- xbt_dynar_foreach(elses, cursor, pair_succ){
-
- //XBT_DEBUG("Search visited pair : graph=%p, automaton=%p", pair_succ->graph_state, pair_succ->automaton_state);
-
- if((search_cycle == 1) && (reached(pair_succ->graph_state, pair_succ->automaton_state) == 1)){
- XBT_INFO("*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*");
- XBT_INFO("| ACCEPTANCE CYCLE |");
- XBT_INFO("*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*");
- XBT_INFO("Counter-example that violates formula :");
- MC_show_snapshot_stack(mc_snapshot_stack);
- MC_dump_snapshot_stack(mc_snapshot_stack);
- MC_print_statistics_pairs(mc_stats_pair);
- exit(0);
- }
-
- if(visited(pair_succ->graph_state, pair_succ->automaton_state, search_cycle) == 0){
+ MC_UNSET_RAW_MEM;
- //XBT_DEBUG("Unvisited pair !");
- mc_stats_pair->executed_transitions++;
-
- MC_SET_RAW_MEM;
- xbt_fifo_unshift(mc_snapshot_stack, pair_succ);
- MC_UNSET_RAW_MEM;
+ cursor= 0;
+ xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){
- set_pair_visited(pair_succ->graph_state, pair_succ->automaton_state, search_cycle);
- MC_dfs(a, search_cycle, 0);
+ res = MC_automaton_evaluate_label(transition_succ->label);
- if((search_cycle == 0) && (current_pair->automaton_state->type == 1)){
+ if(res == 1){ // enabled transition in automaton
+ MC_SET_RAW_MEM;
+ next_pair = new_pair_stateless(next_graph_state, transition_succ->dst, MC_state_interleave_size(next_graph_state));
+ xbt_dynar_push(successors, &next_pair);
+ MC_UNSET_RAW_MEM;
+ }
- MC_restore_snapshot(current_pair->system_state);
- MC_UNSET_RAW_MEM;
-
- xbt_swag_foreach(process, simix_global->process_list){
- if(MC_process_is_enabled(process)){
- //XBT_DEBUG("Pid : %lu", process->pid);
- MC_state_interleave_process(current_pair->graph_state, process);
- }
- }
-
- set_pair_reached(current_pair->graph_state, current_pair->automaton_state);
- XBT_DEBUG("Acceptance pair : graph=%p, automaton=%p(%s)", current_pair->graph_state, current_pair->automaton_state, current_pair->automaton_state->id);
- MC_dfs(a, 1, 1);
-
- }
- }
- }
-
-
- if(MC_state_interleave_size(current_pair->graph_state) > 0){
- MC_restore_snapshot(current_snapshot);
- MC_UNSET_RAW_MEM;
- //XBT_DEBUG("Snapshot restored");
- }
- }
+ }
+ cursor = 0;
+
+ xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){
+
+ res = MC_automaton_evaluate_label(transition_succ->label);
- MC_SET_RAW_MEM;
- //remove_pair_reached(current_pair->graph_state);
- xbt_fifo_shift(mc_snapshot_stack);
- XBT_DEBUG("State (graph=%p, automaton =%p) shifted in snapshot_stack", current_pair->graph_state, current_pair->automaton_state);
- MC_UNSET_RAW_MEM;
+ if(res == 2){ // true transition in automaton
+ MC_SET_RAW_MEM;
+ next_pair = new_pair_stateless(next_graph_state, transition_succ->dst, MC_state_interleave_size(next_graph_state));
+ xbt_dynar_push(successors, &next_pair);
+ MC_UNSET_RAW_MEM;
+ }
-}
+ }
-void MC_show_snapshot_stack(xbt_fifo_t stack){
- int value;
- mc_pairs_t pair;
- xbt_fifo_item_t item;
- smx_req_t req;
- char *req_str = NULL;
+ cursor = 0;
- for (item = xbt_fifo_get_last_item(stack);
- (item ? (pair = (mc_pairs_t) (xbt_fifo_get_item_content(item)))
- : (NULL)); item = xbt_fifo_get_prev_item(item)) {
- req = MC_state_get_executed_request(pair->graph_state, &value);
- if(req){
- req_str = MC_request_to_string(req, value);
- XBT_INFO("%s", req_str);
- xbt_free(req_str);
- }
- }
-}
+ xbt_dynar_foreach(successors, cursor, pair_succ){
-void MC_dump_snapshot_stack(xbt_fifo_t stack){
- mc_pairs_t pair;
+ if(search_cycle == 1){
- MC_SET_RAW_MEM;
- while ((pair = (mc_pairs_t) xbt_fifo_pop(stack)) != NULL)
- MC_pair_delete(pair);
- MC_UNSET_RAW_MEM;
-}
+ if((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2)){
+
+ if(reached(pair_succ->automaton_state)){
+
+ XBT_INFO("Next pair (depth = %d, %u interleave) already reached !", xbt_fifo_size(mc_stack_liveness) + 1, MC_state_interleave_size(pair_succ->graph_state));
-void MC_pair_delete(mc_pairs_t pair){
- xbt_free(pair->graph_state->proc_status);
- xbt_free(pair->graph_state);
- //xbt_free(pair->automaton_state); -> FIXME : à implémenter
- xbt_free(pair);
-}
+ XBT_INFO("*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*");
+ XBT_INFO("| ACCEPTANCE CYCLE |");
+ XBT_INFO("*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*");
+ XBT_INFO("Counter-example that violates formula :");
+ MC_show_stack_liveness(mc_stack_liveness);
+ MC_dump_stack_liveness(mc_stack_liveness);
+ MC_print_statistics_pairs(mc_stats_pair);
+ xbt_abort();
+ }else{
-int MC_automaton_evaluate_label(xbt_automaton_t a, xbt_exp_label_t l){
-
- switch(l->type){
- case 0 : {
- int left_res = MC_automaton_evaluate_label(a, l->u.or_and.left_exp);
- int right_res = MC_automaton_evaluate_label(a, l->u.or_and.right_exp);
- return (left_res || right_res);
- break;
- }
- case 1 : {
- int left_res = MC_automaton_evaluate_label(a, l->u.or_and.left_exp);
- int right_res = MC_automaton_evaluate_label(a, l->u.or_and.right_exp);
- return (left_res && right_res);
- break;
- }
- case 2 : {
- int res = MC_automaton_evaluate_label(a, l->u.exp_not);
- return (!res);
- break;
- }
- case 3 : {
- unsigned int cursor = 0;
- xbt_propositional_symbol_t p = NULL;
- xbt_dynar_foreach(a->propositional_symbols, cursor, p){
- if(strcmp(p->pred, l->u.predicat) == 0){
- int (*f)() = p->function;
- return (*f)();
- }
- }
- return -1;
- break;
- }
- case 4 : {
- return 2;
- break;
- }
- default :
- return -1;
- }
-}
+ if(visited(pair_succ->automaton_state)){
-/*void MC_dfs(xbt_automaton_t a, int search_cycle){
+ XBT_DEBUG("Next pair already visited !");
+ break;
+
+ }else{
- xbt_state_t current_state = (xbt_state_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(stack_automaton_dfs));
- xbt_transition_t transition_succ = NULL;
- xbt_state_t successor = NULL;
- unsigned int cursor = 0;
- xbt_dynar_t elses = xbt_dynar_new(sizeof(xbt_transition_t), NULL);
- int res;
+ XBT_DEBUG("Next pair (depth =%d) -> Acceptance pair (%s)", xbt_fifo_size(mc_stack_liveness) + 1, pair_succ->automaton_state->id);
- //printf("++ current state : %s\n", current_state->id);
-
- xbt_dynar_foreach(current_state->out, cursor, transition_succ){
- successor = transition_succ->dst;
- res = MC_automaton_evaluate_label(a, transition_succ->label);
- //printf("-- state : %s, transition_label : %d, res = %d\n", successor->id, transition_succ->label->type, res);
- if(res == 1){
- if(search_cycle == 1 && reached_dfs != NULL){
- if(strcmp(reached_dfs->id, successor->id) == 0){
- xbt_dynar_push(state_automaton_visited_dfs, &successor);
- printf("\n-*-*-*-*-*-*- ACCEPTANCE CYCLE -*-*-*-*-*-*-\n");
- printf("Visited states : \n");
- unsigned int cursor2 = 0;
- xbt_state_t visited_state = NULL;
- xbt_dynar_foreach(state_automaton_visited_dfs, cursor2, visited_state){
- printf("State : %s\n", visited_state->id);
- }
- exit(1);
- }
- }
- if(successor->visited == 0){
- successor->visited = 1;
- xbt_fifo_unshift(stack_automaton_dfs, successor);
- xbt_dynar_push(state_automaton_visited_dfs, &successor);
- MC_dfs(a, search_cycle);
- if(search_cycle == 0 && successor->type == 1){
- reached_dfs = successor;
- MC_dfs(a, 1);
- }
- }
- }else{
- if(res == 2){
- xbt_dynar_push(elses,&transition_succ);
- }
- }
- }
-
- cursor = 0;
- xbt_dynar_foreach(elses, cursor, transition_succ){
- successor = transition_succ->dst;
- if(search_cycle == 1 && reached_dfs != NULL){
- if(strcmp(reached_dfs->id, successor->id) == 0){
- xbt_dynar_push(state_automaton_visited_dfs, &successor);
- printf("\n-*-*-*-*-*-*- ACCEPTANCE CYCLE -*-*-*-*-*-*-\n");
- printf("Visited states : \n");
- unsigned int cursor2 = 0;
- xbt_state_t visited_state = NULL;
- xbt_dynar_foreach(state_automaton_visited_dfs, cursor2, visited_state){
- printf("State : %s\n", visited_state->id);
- }
- exit(1);
- }
- }
- if(successor->visited == 0){
- successor->visited = 1;
- xbt_fifo_unshift(stack_automaton_dfs, successor);
- xbt_dynar_push(state_automaton_visited_dfs, &successor);
- MC_dfs(a, search_cycle);
- if(search_cycle == 0 && successor->type == 1){
- reached_dfs = successor;
- MC_dfs(a, 1);
- }
- }
- }
+ XBT_DEBUG("Reached pairs : %lu", xbt_dynar_length(reached_pairs));
- xbt_fifo_shift(stack_automaton_dfs);
- }*/
+ MC_SET_RAW_MEM;
+ xbt_fifo_unshift(mc_stack_liveness, pair_succ);
+ MC_UNSET_RAW_MEM;
+
+ MC_ddfs(search_cycle);
+
+ }
+ }
-/* void MC_dfs(xbt_automaton_t a, int search_cycle, int restore){ */
+ }else{
+ if(visited(pair_succ->automaton_state)){
-/* if(xbt_fifo_size(mc_snapshot_stack) == 0) */
-/* return; */
+ XBT_DEBUG("Next pair already visited !");
+ break;
+
+ }else{
-/* if(restore == 1){ */
-/* MC_restore_snapshot(((mc_pairs_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_snapshot_stack)))->system_state); */
-/* MC_UNSET_RAW_MEM; */
-/* } */
+ MC_SET_RAW_MEM;
+ xbt_fifo_unshift(mc_stack_liveness, pair_succ);
+ MC_UNSET_RAW_MEM;
+
+ MC_ddfs(search_cycle);
+ }
+
+ }
+ }else{
-/* //XBT_DEBUG("Lpv length after restore snapshot: %lu", xbt_dynar_length(visited_pairs)); */
+ if(visited(pair_succ->automaton_state)){
-/* /\* Get current state *\/ */
-/* mc_pairs_t current_pair = (mc_pairs_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_snapshot_stack)); */
+ XBT_DEBUG("Next pair already visited !");
+ break;
+
+ }else{
+
+ if(((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2))){
-/* XBT_DEBUG("************************************************** ( search_cycle = %d )", search_cycle); */
-/* XBT_DEBUG("State : 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)); */
-
-/* //XBT_DEBUG("Reached pairs : %lu", xbt_dynar_length(reached_pairs)); */
-
-/* //sleep(1); */
-
-/* smx_process_t process = NULL; */
-/* int value; */
-/* mc_state_t next_graph_state = NULL; */
-/* smx_req_t req = NULL; */
-/* char *req_str; */
-
-/* mc_pairs_t pair_succ; */
-/* xbt_transition_t transition_succ; */
-/* unsigned int cursor; */
-/* int res; */
-/* //int enabled_transition = 0; */
-
-/* xbt_dynar_t elses = xbt_dynar_new(sizeof(mc_pairs_t), NULL); */
-/* xbt_dynar_t successors = xbt_dynar_new(sizeof(mc_pairs_t), NULL); */
-/* xbt_dynar_reset(all_successors); */
-
-/* mc_pairs_t next_pair; */
-/* mc_snapshot_t next_snapshot; */
-/* mc_snapshot_t current_snapshot; */
-
-/* while((req = MC_state_get_request(current_pair->graph_state, &value)) != NULL){ */
+ XBT_DEBUG("Next pair (depth =%d) -> Acceptance pair (%s)", xbt_fifo_size(mc_stack_liveness) + 1, pair_succ->automaton_state->id);
+
+ set_pair_reached(pair_succ->automaton_state);
-/* //XBT_DEBUG("Current pair : %p (%u interleave)", current_pair, MC_state_interleave_size(current_pair->graph_state)+1); */
-/* //XBT_DEBUG("Visited pairs : %lu", xbt_dynar_length(visited_pairs)); */
+ search_cycle = 1;
-/* 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_dfs, xbt_log_priority_debug)){ */
-/* req_str = MC_request_to_string(req, value); */
-/* XBT_DEBUG("Execute: %s", req_str); */
-/* xbt_free(req_str); */
-/* } */
+ XBT_DEBUG("Reached pairs : %lu", xbt_dynar_length(reached_pairs));
-/* MC_state_set_executed_request(current_pair->graph_state, req, value); */
-/* //mc_stats->executed_transitions++; */
+ }
-/* /\* Answer the request *\/ */
-/* SIMIX_request_pre(req, value); */
+ MC_SET_RAW_MEM;
+ xbt_fifo_unshift(mc_stack_liveness, pair_succ);
+ MC_UNSET_RAW_MEM;
+
+ MC_ddfs(search_cycle);
-/* /\* Wait for requests (schedules processes) *\/ */
-/* MC_wait_for_requests(); */
+ }
+
+ }
+ /* Restore system before checking others successors */
+ if(cursor != (xbt_dynar_length(successors) - 1))
+ MC_replay_liveness(mc_stack_liveness, 1);
+
+ }
-/* /\* Create the new expanded graph_state *\/ */
-/* MC_SET_RAW_MEM; */
+ if(MC_state_interleave_size(current_pair->graph_state) > 0){
+ XBT_DEBUG("Backtracking to depth %d", xbt_fifo_size(mc_stack_liveness));
+ MC_replay_liveness(mc_stack_liveness, 0);
+ }
+ }
-/* next_graph_state = MC_state_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); */
+
+ }else{
-/* MC_UNSET_RAW_MEM; */
+ XBT_DEBUG("No more request to execute in this state, search evolution in Büchi Automaton.");
-/* xbt_dynar_reset(elses); */
-/* xbt_dynar_reset(successors); */
-
-/* cursor = 0; */
-/* xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){ */
-
-/* res = MC_automaton_evaluate_label(a, transition_succ->label); */
-
-/* MC_SET_RAW_MEM; */
-/* next_pair = new_pair(next_snapshot,next_graph_state, transition_succ->dst); */
+ MC_SET_RAW_MEM;
-/* //XBT_DEBUG("Next pair : %p", next_pair); */
-
-/* if(res == 1){ // enabled transition in automaton */
-/* xbt_dynar_push(successors, &next_pair); */
-/* //XBT_DEBUG("New Successors length : %lu", xbt_dynar_length(successors)); */
-/* }else{ */
-/* if(res == 2){ */
-/* xbt_dynar_push(elses, &next_pair); */
-/* //XBT_DEBUG("New Elses length : %lu", xbt_dynar_length(elses)); */
-/* } */
-/* } */
+ /* Create the new expanded graph_state */
+ next_graph_state = MC_state_pair_new();
-/* MC_UNSET_RAW_MEM; */
-/* } */
+ xbt_dynar_reset(successors);
-
-/* if((xbt_dynar_length(successors) == 0) && (xbt_dynar_length(elses) == 0) ){ */
+ MC_UNSET_RAW_MEM;
-/* 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)); */
-/* //XBT_DEBUG("Elses length : %lu", xbt_dynar_length(elses)); */
+ cursor= 0;
+ xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){
-/* if(xbt_dynar_length(successors) > 0){ */
+ res = MC_automaton_evaluate_label(transition_succ->label);
-/* cursor = 0; */
-/* xbt_dynar_foreach(successors, cursor, pair_succ){ */
-/* MC_SET_RAW_MEM; */
-/* xbt_dynar_push(all_successors, &pair_succ); */
-/* MC_UNSET_RAW_MEM; */
-/* } */
+ if(res == 1){ // enabled transition in automaton
+ MC_SET_RAW_MEM;
+ next_pair = new_pair_stateless(next_graph_state, transition_succ->dst, MC_state_interleave_size(next_graph_state));
+ xbt_dynar_push(successors, &next_pair);
+ MC_UNSET_RAW_MEM;
+ }
-/* }else{ */
+ }
-/* cursor = 0; */
-/* xbt_dynar_foreach(elses, cursor, pair_succ){ */
-/* MC_SET_RAW_MEM; */
-/* xbt_dynar_push(all_successors, &pair_succ); */
-/* MC_UNSET_RAW_MEM; */
-/* } */
+ cursor = 0;
+
+ xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){
+
+ res = MC_automaton_evaluate_label(transition_succ->label);
+
+ if(res == 2){ // true transition in automaton
+ MC_SET_RAW_MEM;
+ next_pair = new_pair_stateless(next_graph_state, transition_succ->dst, MC_state_interleave_size(next_graph_state));
+ xbt_dynar_push(successors, &next_pair);
+ MC_UNSET_RAW_MEM;
+ }
-/* } */
+ }
-/* MC_restore_snapshot(current_snapshot); */
-/* MC_UNSET_RAW_MEM; */
+ cursor = 0;
-/* } */
+ xbt_dynar_foreach(successors, cursor, pair_succ){
+
+ if(search_cycle == 1){
+
+ if((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2)){
+
+ if(reached(pair_succ->automaton_state)){
+
+ XBT_INFO("Next pair (depth = %d) already reached !", xbt_fifo_size(mc_stack_liveness) + 1);
+
+ XBT_INFO("*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*");
+ XBT_INFO("| ACCEPTANCE CYCLE |");
+ XBT_INFO("*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*");
+ XBT_INFO("Counter-example that violates formula :");
+ MC_show_stack_liveness(mc_stack_liveness);
+ MC_dump_stack_liveness(mc_stack_liveness);
+ MC_print_statistics_pairs(mc_stats_pair);
+ xbt_abort();
+
+ }else{
+
+ XBT_INFO("Next pair (depth = %d) -> Acceptance pair (%s)", xbt_fifo_size(mc_stack_liveness) + 1, pair_succ->automaton_state->id);
+
+ XBT_INFO("Reached pairs : %lu", xbt_dynar_length(reached_pairs));
+
+ MC_SET_RAW_MEM;
+ xbt_fifo_unshift(mc_stack_liveness, pair_succ);
+ MC_UNSET_RAW_MEM;
+
+ MC_ddfs(search_cycle);
+
+ }
+
+ }else{
+
+ MC_SET_RAW_MEM;
+ xbt_fifo_unshift(mc_stack_liveness, pair_succ);
+ MC_UNSET_RAW_MEM;
+
+ MC_ddfs(search_cycle);
+
+ }
+
-/* //XBT_DEBUG("All successors : %lu", xbt_dynar_length(all_successors)); */
+ }else{
+
+ if(((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2))){
-/* cursor = 0; */
+ set_pair_reached(pair_succ->automaton_state);
+
+ search_cycle = 1;
-/* xbt_dynar_foreach(all_successors, cursor, pair_succ){ */
+ XBT_INFO("Reached pairs : %lu", xbt_dynar_length(reached_pairs));
-/* if((search_cycle == 1) && (reached(pair_succ->graph_state, pair_succ->automaton_state) == 1)){ */
-/* XBT_INFO("*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*"); */
-/* XBT_INFO("| ACCEPTANCE CYCLE |"); */
-/* XBT_INFO("*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*"); */
-/* XBT_INFO("Counter-example that violates formula :"); */
-/* MC_show_snapshot_stack(mc_snapshot_stack); */
-/* MC_dump_snapshot_stack(mc_snapshot_stack); */
-/* exit(0); */
-/* } */
-
-/* if(visited(pair_succ->graph_state, pair_succ->automaton_state, search_cycle) == 0){ */
+ }
-/* //XBT_DEBUG("New pair in stack"); */
-
-/* MC_SET_RAW_MEM; */
-/* xbt_fifo_unshift(mc_snapshot_stack, pair_succ); */
-/* MC_UNSET_RAW_MEM; */
+ MC_SET_RAW_MEM;
+ xbt_fifo_unshift(mc_stack_liveness, pair_succ);
+ MC_UNSET_RAW_MEM;
+
+ MC_ddfs(search_cycle);
+
+ }
-/* set_pair_visited(pair_succ->graph_state, pair_succ->automaton_state, search_cycle); */
-/* MC_dfs(a, search_cycle, 1); */
+ /* Restore system before checking others successors */
+ if(cursor != xbt_dynar_length(successors) - 1)
+ MC_replay_liveness(mc_stack_liveness, 1);
-/* if((search_cycle == 0) && (pair_succ->automaton_state->type == 1)){ */
-
-/* set_pair_reached(pair_succ->graph_state, pair_succ->automaton_state); */
-/* XBT_DEBUG("Acceptance pair : graph=%p, automaton=%p(%s)", pair_succ->graph_state, pair_succ->automaton_state, pair_succ->automaton_state->id); */
-/* MC_dfs(a, 1, 1); */
+ }
-/* } */
-/* } */
+ }
+
+ }else{
+
+ XBT_WARN("/!\\ Max depth reached ! /!\\ ");
+ if(current_pair->requests > 0){
+ XBT_WARN("/!\\ But, there are still processes to interleave. Model-checker will not be able to ensure the soundness of the verification from now. /!\\ ");
+ XBT_WARN("Notice : the default value of max depth is 1000 but you can change it with cfg=model-check/max_depth:value.");
+ }
+
+ }
+
+ if(xbt_fifo_size(mc_stack_liveness) == _sg_mc_max_depth ){
+ XBT_DEBUG("Pair (depth = %d) shifted in stack, maximum depth reached", xbt_fifo_size(mc_stack_liveness) );
+ }else{
+ XBT_DEBUG("Pair (depth = %d) shifted in stack", xbt_fifo_size(mc_stack_liveness) );
+ }
-/* } */
-/* MC_SET_RAW_MEM; */
-/* //remove_pair_reached(current_pair->graph_state); */
-/* xbt_fifo_shift(mc_snapshot_stack); */
-/* XBT_DEBUG("State (graph=%p, automaton =%p) shifted in snapshot_stack", current_pair->graph_state, current_pair->automaton_state); */
-/* MC_UNSET_RAW_MEM; */
+ MC_SET_RAW_MEM;
+ remove_pair = xbt_fifo_shift(mc_stack_liveness);
+ xbt_fifo_remove(mc_stack_liveness, remove_pair);
+ remove_pair = NULL;
+ if((current_pair->automaton_state->type == 1) || (current_pair->automaton_state->type == 2)){
+ remove_pair_reached = xbt_dynar_pop_as(reached_pairs, mc_pair_reached_t);
+ pair_reached_free(remove_pair_reached);
+ remove_pair_reached = NULL;
+ }
+ MC_UNSET_RAW_MEM;
-/* } */
+ /*if(initial_state_liveness->raw_mem_set)
+ MC_SET_RAW_MEM;*/
+
+}