-#include "private.h"
-#include "unistd.h"
+/* Copyright (c) 2011-2013 Da SimGrid Team. All rights reserved. */
+
+/* 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. */
+
+#include "mc_private.h"
+#include <unistd.h>
+#include <sys/wait.h>
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_liveness, mc,
"Logging specific to algorithms for liveness properties verification");
-xbt_dynar_t initial_pairs = NULL;
-xbt_dynar_t reached_pairs;
-extern mc_snapshot_t initial_snapshot;
-
-mc_pair_t new_pair(mc_snapshot_t sn, mc_state_t sg, xbt_state_t st){
- mc_pair_t p = NULL;
- p = xbt_new0(s_mc_pair_t, 1);
- p->system_state = sn;
- p->automaton_state = st;
- p->graph_state = sg;
- mc_stats_pair->expanded_pairs++;
- return p;
-
-}
+/********* Global variables *********/
-int snapshot_compare(mc_snapshot_t s1, mc_snapshot_t s2){
-
- if(s1->num_reg != s2->num_reg)
- return 1;
+xbt_dynar_t acceptance_pairs;
+xbt_dynar_t visited_pairs;
+xbt_dynar_t successors;
- int i;
- for(i=0 ; i< s1->num_reg ; i++){
- if(s1->regions[i]->size != s2->regions[i]->size)
- return 1;
+/********* Static functions *********/
- if(s1->regions[i]->start_addr != s2->regions[i]->start_addr)
- return 1;
+static mc_acceptance_pair_t acceptance_pair_new(int num, xbt_automaton_state_t as){
- if(memcmp(s1->regions[i]->data, s2->regions[i]->data, s1->regions[i]->size) != 0)
- return 1;
-
+ mc_acceptance_pair_t new_pair = NULL;
+ new_pair = xbt_new0(s_mc_acceptance_pair_t, 1);
+ new_pair->num = num;
+ new_pair->automaton_state = as;
+ new_pair->prop_ato = xbt_dynar_new(sizeof(int), NULL);
+ new_pair->heap_bytes_used = mmalloc_get_bytes_used(std_heap);
+ new_pair->nb_processes = xbt_swag_size(simix_global->process_list);
+ new_pair->system_state = MC_take_snapshot();
+
+ /* Get values of propositional symbols */
+ int res;
+ int_f_void_t f;
+ unsigned int cursor = 0;
+ xbt_automaton_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);
}
- return 0;
+ return new_pair;
}
-int reached(xbt_automaton_t a){
+static int is_reached_acceptance_pair(int num, xbt_automaton_state_t as){
+
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
+ MC_SET_RAW_MEM;
+ mc_acceptance_pair_t new_pair = acceptance_pair_new(num, as);
+ MC_UNSET_RAW_MEM;
+
+ if(xbt_dynar_is_empty(acceptance_pairs)){
+
+ MC_SET_RAW_MEM;
+ xbt_dynar_push(acceptance_pairs, &new_pair);
+ MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+
+ return -1;
- if(xbt_dynar_is_empty(reached_pairs)){
- return 0;
}else{
+
MC_SET_RAW_MEM;
-
- mc_pair_reached_t pair = NULL;
- pair = xbt_new0(s_mc_pair_reached_t, 1);
- pair->automaton_state = a->current_state;
- pair->prop_ato = xbt_dynar_new(sizeof(int), NULL);
- pair->system_state = xbt_new0(s_mc_snapshot_t, 1);
- MC_take_snapshot(pair->system_state);
- /* Get values of propositional symbols */
+ size_t current_bytes_used = new_pair->heap_bytes_used;
+ int current_nb_processes = new_pair->nb_processes;
+
unsigned int cursor = 0;
- xbt_propositional_symbol_t ps = NULL;
- xbt_dynar_foreach(a->propositional_symbols, cursor, ps){
- int (*f)() = ps->function;
- int res = (*f)();
- xbt_dynar_push(pair->prop_ato, &res);
- }
-
- cursor = 0;
- mc_pair_reached_t pair_test;
-
- xbt_dynar_foreach(reached_pairs, cursor, pair_test){
- if(automaton_state_compare(pair_test->automaton_state, pair->automaton_state) == 0){
- if(xbt_dynar_compare(pair_test->prop_ato, pair->prop_ato, propositional_symbols_compare_value) == 0){
- if(snapshot_compare(pair_test->system_state, pair->system_state) == 0){
- MC_UNSET_RAW_MEM;
- return 1;
- }
- }
+ int previous_cursor = 0, next_cursor = 0;
+ int start = 0;
+ int end = xbt_dynar_length(acceptance_pairs) - 1;
+
+ mc_acceptance_pair_t pair_test = NULL;
+ size_t bytes_used_test;
+ int nb_processes_test;
+ int same_processes_and_bytes_not_found = 1;
+
+ while(start <= end && same_processes_and_bytes_not_found){
+ cursor = (start + end) / 2;
+ pair_test = (mc_acceptance_pair_t)xbt_dynar_get_as(acceptance_pairs, cursor, mc_acceptance_pair_t);
+ bytes_used_test = pair_test->heap_bytes_used;
+ nb_processes_test = pair_test->nb_processes;
+ if(nb_processes_test < current_nb_processes)
+ start = cursor + 1;
+ if(nb_processes_test > current_nb_processes)
+ end = cursor - 1;
+ if(nb_processes_test == current_nb_processes){
+ if(bytes_used_test < current_bytes_used)
+ start = cursor + 1;
+ if(bytes_used_test > current_bytes_used)
+ end = cursor - 1;
+ if(bytes_used_test == current_bytes_used){
+ same_processes_and_bytes_not_found = 0;
+ if(xbt_automaton_state_compare(pair_test->automaton_state, as) == 0){
+ if(xbt_automaton_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 pair_test->num;
+ }
+ }
+ }
+ /* Search another pair with same number of bytes used in std_heap */
+ previous_cursor = cursor - 1;
+ while(previous_cursor >= 0){
+ pair_test = (mc_acceptance_pair_t)xbt_dynar_get_as(acceptance_pairs, previous_cursor, mc_acceptance_pair_t);
+ bytes_used_test = pair_test->system_state->heap_bytes_used;
+ if(bytes_used_test != current_bytes_used)
+ break;
+ if(xbt_automaton_state_compare(pair_test->automaton_state, as) == 0){
+ if(xbt_automaton_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 pair_test->num;
+ }
+ }
+ }
+ previous_cursor--;
+ }
+ next_cursor = cursor + 1;
+ while(next_cursor < xbt_dynar_length(acceptance_pairs)){
+ pair_test = (mc_acceptance_pair_t)xbt_dynar_get_as(acceptance_pairs, next_cursor, mc_acceptance_pair_t);
+ bytes_used_test = pair_test->system_state->heap_bytes_used;
+ if(bytes_used_test != current_bytes_used)
+ break;
+ if(xbt_automaton_state_compare(pair_test->automaton_state, as) == 0){
+ if(xbt_automaton_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 pair_test->num;
+ }
+ }
+ }
+ next_cursor++;
+ }
+ }
}
}
+ pair_test = (mc_acceptance_pair_t)xbt_dynar_get_as(acceptance_pairs, cursor, mc_acceptance_pair_t);
+ bytes_used_test = pair_test->heap_bytes_used;
+
+ if(bytes_used_test < current_bytes_used)
+ xbt_dynar_insert_at(acceptance_pairs, cursor + 1, &new_pair);
+ else
+ xbt_dynar_insert_at(acceptance_pairs, cursor, &new_pair);
+
MC_UNSET_RAW_MEM;
- return 0;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+
+ return -1;
}
+
}
-int set_pair_reached(xbt_automaton_t a){
- if(reached(a) == 0){
+static void set_acceptance_pair_reached(int num, xbt_automaton_state_t as){
- MC_SET_RAW_MEM;
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
+ MC_SET_RAW_MEM;
+ mc_acceptance_pair_t new_pair = acceptance_pair_new(num, as);
+ MC_UNSET_RAW_MEM;
- mc_pair_reached_t pair = NULL;
- pair = xbt_new0(s_mc_pair_reached_t, 1);
- pair->automaton_state = a->current_state;
- pair->prop_ato = xbt_dynar_new(sizeof(int), NULL);
- pair->system_state = xbt_new0(s_mc_snapshot_t, 1);
- MC_take_snapshot(pair->system_state);
+ if(xbt_dynar_is_empty(acceptance_pairs)){
+
+ MC_SET_RAW_MEM;
+ xbt_dynar_push(acceptance_pairs, &new_pair);
+ MC_UNSET_RAW_MEM;
+
+ }else{
+
+ MC_SET_RAW_MEM;
- /* Get values of propositional symbols */
+ size_t current_bytes_used = new_pair->heap_bytes_used;
+ int current_nb_processes = new_pair->nb_processes;
+
unsigned int cursor = 0;
- xbt_propositional_symbol_t ps = NULL;
- xbt_dynar_foreach(a->propositional_symbols, cursor, ps){
- int (*f)() = ps->function;
- int res = (*f)();
- xbt_dynar_push(pair->prop_ato, &res);
+ int start = 0;
+ int end = xbt_dynar_length(acceptance_pairs) - 1;
+
+ mc_acceptance_pair_t pair_test = NULL;
+ size_t bytes_used_test = 0;
+ int nb_processes_test;
+
+ while(start <= end){
+ cursor = (start + end) / 2;
+ pair_test = (mc_acceptance_pair_t)xbt_dynar_get_as(acceptance_pairs, cursor, mc_acceptance_pair_t);
+ bytes_used_test = pair_test->heap_bytes_used;
+ nb_processes_test = pair_test->nb_processes;
+ if(nb_processes_test < current_nb_processes)
+ start = cursor + 1;
+ if(nb_processes_test > current_nb_processes)
+ end = cursor - 1;
+ if(nb_processes_test == current_nb_processes){
+ if(bytes_used_test < current_bytes_used)
+ start = cursor + 1;
+ if(bytes_used_test > current_bytes_used)
+ end = cursor - 1;
+ if(bytes_used_test == current_bytes_used)
+ break;
+ }
}
-
- xbt_dynar_push(reached_pairs, &pair);
-
+
+ if(bytes_used_test < current_bytes_used)
+ xbt_dynar_insert_at(acceptance_pairs, cursor + 1, &new_pair);
+ else
+ xbt_dynar_insert_at(acceptance_pairs, cursor, &new_pair);
+
MC_UNSET_RAW_MEM;
+
+ }
- return 1;
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+
+}
+
+static void remove_acceptance_pair(int num_pair){
+
+ unsigned int cursor = 0;
+ mc_acceptance_pair_t current_pair;
+ xbt_dynar_foreach(acceptance_pairs, cursor, current_pair){
+ if(current_pair->num == num_pair)
+ break;
}
+
+ xbt_dynar_remove_at(acceptance_pairs, cursor, NULL);
- return 0;
}
-void MC_pair_delete(mc_pair_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);
+static mc_visited_pair_t visited_pair_new(int num, xbt_automaton_state_t as){
+
+ mc_visited_pair_t new_pair = NULL;
+ new_pair = xbt_new0(s_mc_visited_pair_t, 1);
+ new_pair->automaton_state = as;
+ new_pair->num = num;
+ new_pair->prop_ato = xbt_dynar_new(sizeof(int), NULL);
+ new_pair->heap_bytes_used = mmalloc_get_bytes_used(std_heap);
+ new_pair->nb_processes = xbt_swag_size(simix_global->process_list);
+ new_pair->system_state = MC_take_snapshot();
+
+ /* Get values of propositional symbols */
+ int res;
+ int_f_void_t f;
+ unsigned int cursor = 0;
+ xbt_automaton_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);
+ }
+
+ return new_pair;
+
}
+static int is_visited_pair(int num, xbt_automaton_state_t as){
+
+ if(_sg_mc_visited == 0)
+ return -1;
-int MC_automaton_evaluate_label(xbt_automaton_t a, xbt_exp_label_t l){
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
+ MC_SET_RAW_MEM;
+ mc_visited_pair_t new_pair = visited_pair_new(num, as);
+ MC_UNSET_RAW_MEM;
+
+ if(xbt_dynar_is_empty(visited_pairs)){
+
+ MC_SET_RAW_MEM;
+ xbt_dynar_push(visited_pairs, &new_pair);
+ MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+
+ return -1;
+
+ }else{
+
+ MC_SET_RAW_MEM;
+
+ size_t current_bytes_used = new_pair->heap_bytes_used;
+ int current_nb_processes = new_pair->nb_processes;
+
+ unsigned int cursor = 0;
+ int previous_cursor = 0, next_cursor = 0;
+ int start = 0;
+ int end = xbt_dynar_length(visited_pairs) - 1;
+
+ mc_visited_pair_t pair_test = NULL;
+ size_t bytes_used_test;
+ int nb_processes_test;
+ int same_processes_and_bytes_not_found = 1;
+
+ while(start <= end && same_processes_and_bytes_not_found){
+ cursor = (start + end) / 2;
+ pair_test = (mc_visited_pair_t)xbt_dynar_get_as(visited_pairs, cursor, mc_visited_pair_t);
+ bytes_used_test = pair_test->heap_bytes_used;
+ nb_processes_test = pair_test->nb_processes;
+ if(nb_processes_test < current_nb_processes)
+ start = cursor + 1;
+ if(nb_processes_test > current_nb_processes)
+ end = cursor - 1;
+ if(nb_processes_test == current_nb_processes){
+ if(bytes_used_test < current_bytes_used)
+ start = cursor + 1;
+ if(bytes_used_test > current_bytes_used)
+ end = cursor - 1;
+ if(bytes_used_test == current_bytes_used){
+ same_processes_and_bytes_not_found = 0;
+ if(xbt_automaton_state_compare(pair_test->automaton_state, as) == 0){
+ if(xbt_automaton_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){
+ xbt_dynar_remove_at(visited_pairs, cursor, NULL);
+ xbt_dynar_insert_at(visited_pairs, cursor, &new_pair);
+ XBT_DEBUG("Pair %d already visited ! (equal to pair %d)", new_pair->num, pair_test->num);
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+ return pair_test->num;
+ }
+ }
+ }
+ /* Search another pair with same number of bytes used in std_heap */
+ previous_cursor = cursor - 1;
+ while(previous_cursor >= 0){
+ pair_test = (mc_visited_pair_t)xbt_dynar_get_as(visited_pairs, previous_cursor, mc_visited_pair_t);
+ bytes_used_test = pair_test->system_state->heap_bytes_used;
+ if(bytes_used_test != current_bytes_used)
+ break;
+ if(xbt_automaton_state_compare(pair_test->automaton_state, as) == 0){
+ if(xbt_automaton_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){
+ xbt_dynar_remove_at(visited_pairs, previous_cursor, NULL);
+ xbt_dynar_insert_at(visited_pairs, previous_cursor, &new_pair);
+ XBT_DEBUG("Pair %d already visited ! (equal to pair %d)", new_pair->num, pair_test->num);
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+ return pair_test->num;
+ }
+ }
+ }
+ previous_cursor--;
+ }
+ next_cursor = cursor + 1;
+ while(next_cursor < xbt_dynar_length(visited_pairs)){
+ pair_test = (mc_visited_pair_t)xbt_dynar_get_as(visited_pairs, next_cursor, mc_visited_pair_t);
+ bytes_used_test = pair_test->system_state->heap_bytes_used;
+ if(bytes_used_test != current_bytes_used)
+ break;
+ if(xbt_automaton_state_compare(pair_test->automaton_state, as) == 0){
+ if(xbt_automaton_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){
+ xbt_dynar_remove_at(visited_pairs, next_cursor, NULL);
+ xbt_dynar_insert_at(visited_pairs, next_cursor, &new_pair);
+ XBT_DEBUG("Pair %d already visited ! (equal to pair %d)", new_pair->num, pair_test->num);
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+ return pair_test->num;
+ }
+ }
+ }
+ next_cursor++;
+ }
+ }
+ }
+ }
+
+ pair_test = (mc_visited_pair_t)xbt_dynar_get_as(visited_pairs, cursor, mc_visited_pair_t);
+ bytes_used_test = pair_test->heap_bytes_used;
+
+ if(bytes_used_test < current_bytes_used)
+ xbt_dynar_insert_at(visited_pairs, cursor + 1, &new_pair);
+ else
+ xbt_dynar_insert_at(visited_pairs, cursor, &new_pair);
+
+ if(xbt_dynar_length(visited_pairs) > _sg_mc_visited){
+ int min = mc_stats->expanded_states;
+ unsigned int cursor2 = 0;
+ unsigned int index = 0;
+ xbt_dynar_foreach(visited_pairs, cursor2, pair_test){
+ if(pair_test->num < min){
+ index = cursor2;
+ min = pair_test->num;
+ }
+ }
+ xbt_dynar_remove_at(visited_pairs, index, NULL);
+ }
+
+ /*cursor = 0;
+ xbt_dynar_foreach(visited_pairs, cursor, pair_test){
+ fprintf(stderr, "Visited pair %d, nb_processes %d and heap_bytes_used %zu\n", pair_test->num, pair_test->nb_processes, pair_test->heap_bytes_used);
+ }*/
+
+ MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+
+ return -1;
+
+ }
+
+}
+
+static int MC_automaton_evaluate_label(xbt_automaton_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);
+ 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);
- 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);
+ 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);
- break;
}
case 2 : {
- int res = MC_automaton_evaluate_label(a, l->u.exp_not);
+ int res = MC_automaton_evaluate_label(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){
+ xbt_automaton_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){
- int (*f)() = p->function;
- return (*f)();
+ f = (int_f_void_t)p->function;
+ return f();
}
}
return -1;
- break;
}
case 4 : {
return 2;
- break;
}
default :
return -1;
}
-/********************* Double-DFS stateful without visited state *******************/
+/********* Free functions *********/
+
+static void visited_pair_free(mc_visited_pair_t pair){
+ if(pair){
+ xbt_dynar_free(&(pair->prop_ato));
+ MC_free_snapshot(pair->system_state);
+ xbt_free(pair);
+ }
+}
+
+static void visited_pair_free_voidp(void *p){
+ visited_pair_free((mc_visited_pair_t) * (void **) p);
+}
+
+static void acceptance_pair_free(mc_acceptance_pair_t pair){
+ if(pair){
+ xbt_dynar_free(&(pair->prop_ato));
+ MC_free_snapshot(pair->system_state);
+ xbt_free(pair);
+ }
+}
+
+static void acceptance_pair_free_voidp(void *p){
+ acceptance_pair_free((mc_acceptance_pair_t) * (void **) p);
+}
+
+
+/********* DDFS Algorithm *********/
-void MC_ddfs_stateful_init(xbt_automaton_t a){
+void MC_ddfs_init(void){
+
+ initial_state_liveness->raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
XBT_DEBUG("**************************************************");
- XBT_DEBUG("Double-DFS stateful without visited state init");
+ XBT_DEBUG("Double-DFS init");
XBT_DEBUG("**************************************************");
-
- mc_pair_t mc_initial_pair;
- mc_state_t initial_graph_state;
+
+ mc_pair_t mc_initial_pair = NULL;
+ mc_state_t initial_graph_state = NULL;
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();
+ initial_graph_state = MC_state_new();
xbt_swag_foreach(process, simix_global->process_list){
if(MC_process_is_enabled(process)){
MC_state_interleave_process(initial_graph_state, process);
}
}
- reached_pairs = xbt_dynar_new(sizeof(mc_pair_reached_t), NULL);
+ acceptance_pairs = xbt_dynar_new(sizeof(mc_acceptance_pair_t), acceptance_pair_free_voidp);
+ visited_pairs = xbt_dynar_new(sizeof(mc_visited_pair_t), visited_pair_free_voidp);
+ successors = xbt_dynar_new(sizeof(mc_pair_t), NULL);
- MC_take_snapshot(init_snapshot);
+ /* Save the initial state */
+ initial_state_liveness->snapshot = MC_take_snapshot();
MC_UNSET_RAW_MEM;
-
+
unsigned int cursor = 0;
- xbt_state_t state = NULL;
+ xbt_automaton_state_t automaton_state;
- xbt_dynar_foreach(a->states, cursor, state){
- if(state->type == -1){
-
+ xbt_dynar_foreach(_mc_property_automaton->states, cursor, automaton_state){
+ if(automaton_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_initial_pair = MC_pair_new(initial_graph_state, automaton_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_ddfs_stateful(a, 0, 0);
- }else{
- MC_restore_snapshot(init_snapshot);
- MC_UNSET_RAW_MEM;
- MC_ddfs_stateful(a, 0, 0);
+
+ if(cursor != 0){
+ MC_restore_snapshot(initial_state_liveness->snapshot);
+ MC_UNSET_RAW_MEM;
}
+
+ MC_ddfs(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_ddfs_stateful(a, 1, 0);
- }else{
- MC_restore_snapshot(init_snapshot);
- MC_UNSET_RAW_MEM;
- MC_ddfs_stateful(a, 1, 0);
- }
- }
+ if(automaton_state->type == 2){
+
+ MC_SET_RAW_MEM;
+ mc_initial_pair = MC_pair_new(initial_graph_state, automaton_state, MC_state_interleave_size(initial_graph_state));
+ xbt_fifo_unshift(mc_stack_liveness, mc_initial_pair);
+ MC_UNSET_RAW_MEM;
+
+ set_acceptance_pair_reached(mc_initial_pair->num, automaton_state);
+
+ if(cursor != 0){
+ MC_restore_snapshot(initial_state_liveness->snapshot);
+ MC_UNSET_RAW_MEM;
+ }
+
+ MC_ddfs(1);
+
+ }
}
- }
+ }
+
+ if(initial_state_liveness->raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
+
}
-void MC_ddfs_stateful(xbt_automaton_t a, int search_cycle, int restore){
+void MC_ddfs(int search_cycle){
- smx_process_t process = NULL;
+ smx_process_t process;
mc_pair_t current_pair = NULL;
- if(xbt_fifo_size(mc_stack_liveness_stateful) == 0)
+ if(xbt_fifo_size(mc_stack_liveness) == 0)
return;
- if(restore == 1){
- current_pair = (mc_pair_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack_liveness_stateful));
- MC_restore_snapshot(current_pair->system_state);
- xbt_swag_foreach(process, simix_global->process_list){
- if(MC_process_is_enabled(process)){
- MC_state_interleave_process(current_pair->graph_state, process);
- }
- }
- MC_UNSET_RAW_MEM;
- }
- /* Get current state */
- current_pair = (mc_pair_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack_liveness_stateful));
-
-
- 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));
+ /* Get current pair */
+ current_pair = (mc_pair_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack_liveness));
- a->current_state = current_pair->automaton_state;
+ /* Update current state in buchi automaton */
+ _mc_property_automaton->current_state = current_pair->automaton_state;
- mc_stats_pair->visited_pairs++;
+
+ XBT_DEBUG("********************* ( Depth = %d, search_cycle = %d )", xbt_fifo_size(mc_stack_liveness), search_cycle);
+
+ mc_stats->visited_pairs++;
int value;
mc_state_t next_graph_state = NULL;
- smx_req_t req = NULL;
+ smx_simcall_t req = NULL;
char *req_str;
- mc_pair_t pair_succ;
- xbt_transition_t transition_succ;
- unsigned int cursor;
+ xbt_automaton_transition_t transition_succ;
+ unsigned int cursor = 0;
int res;
-
- xbt_dynar_t successors = NULL;
+ int reached_num;
mc_pair_t next_pair = NULL;
- mc_snapshot_t next_snapshot = NULL;
- mc_snapshot_t current_snapshot = NULL;
+ mc_pair_t pair_succ;
- //sleep(1);
- MC_SET_RAW_MEM;
- successors = xbt_dynar_new(sizeof(mc_pair_t), NULL);
- MC_UNSET_RAW_MEM;
+ mc_pair_t pair_to_remove;
- while((req = MC_state_get_request(current_pair->graph_state, &value)) != NULL){
+ if(xbt_fifo_size(mc_stack_liveness) < _sg_mc_max_depth){
- MC_SET_RAW_MEM;
- current_snapshot = xbt_new0(s_mc_snapshot_t, 1);
- MC_take_snapshot(current_snapshot);
- MC_UNSET_RAW_MEM;
+ if(current_pair->requests > 0){
+
+ while((req = MC_state_get_request(current_pair->graph_state, &value)) != NULL){
-
- /* 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);
- }
+ /* 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);
+ MC_state_set_executed_request(current_pair->graph_state, req, value);
+ mc_stats->executed_transitions++;
- /* Answer the request */
- SIMIX_request_pre(req, value);
+ /* Answer the request */
+ SIMIX_simcall_pre(req, value);
- /* Wait for requests (schedules processes) */
- MC_wait_for_requests();
+ /* Wait for requests (schedules processes) */
+ MC_wait_for_requests();
+ MC_SET_RAW_MEM;
- /* Create the new expanded graph_state */
- MC_SET_RAW_MEM;
+ /* Create the new expanded graph_state */
+ next_graph_state = MC_state_new();
- 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);
- }
- }
+ /* 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);
+ }
+ }
- next_snapshot = xbt_new0(s_mc_snapshot_t, 1);
- MC_take_snapshot(next_snapshot);
+ xbt_swag_foreach(process, simix_global->process_list){
+ if(MC_process_is_enabled(process)){
+ MC_state_interleave_process(next_graph_state, process);
+ }
+ }
- xbt_dynar_reset(successors);
+ xbt_dynar_reset(successors);
- MC_UNSET_RAW_MEM;
+ 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){ // enabled transition in automaton
- 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){
- cursor = 0;
- xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){
+ res = MC_automaton_evaluate_label(transition_succ->label);
- res = MC_automaton_evaluate_label(a, transition_succ->label);
-
- if(res == 2){ // transition always enabled in automaton
- 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(res == 1){ // enabled transition in automaton
+ MC_SET_RAW_MEM;
+ next_pair = MC_pair_new(next_graph_state, transition_succ->dst, MC_state_interleave_size(next_graph_state));
+ xbt_dynar_push(successors, &next_pair);
+ MC_UNSET_RAW_MEM;
+ }
-
- }
+ }
+ cursor = 0;
- 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 in automaton %lu", xbt_dynar_length(successors));
-
- 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(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);
- }
-
- //mc_stats_pair->executed_transitions++;
-
- MC_SET_RAW_MEM;
- xbt_fifo_unshift(mc_stack_liveness_stateful, pair_succ);
- MC_UNSET_RAW_MEM;
-
- MC_ddfs_stateful(a, search_cycle, 0);
-
-
- if((search_cycle == 0) && ((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2))){
-
- int res = set_pair_reached(a);
- XBT_DEBUG("Acceptance pair : graph=%p, automaton=%p(%s)", pair_succ->graph_state, pair_succ->automaton_state, pair_succ->automaton_state->id);
-
- MC_SET_RAW_MEM;
- xbt_fifo_unshift(mc_stack_liveness_stateful, pair_succ);
- MC_UNSET_RAW_MEM;
-
- MC_ddfs_stateful(a, 1, 1);
-
- if(res){
- MC_SET_RAW_MEM;
- xbt_dynar_pop(reached_pairs, NULL);
- MC_UNSET_RAW_MEM;
- }
- }
+ 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 = MC_pair_new(next_graph_state, transition_succ->dst, MC_state_interleave_size(next_graph_state));
+ xbt_dynar_push(successors, &next_pair);
+ MC_UNSET_RAW_MEM;
+ }
- }
+ }
- if(MC_state_interleave_size(current_pair->graph_state) > 0){
- XBT_DEBUG("Backtracking to depth %u", xbt_fifo_size(mc_stack_liveness_stateful));
- MC_restore_snapshot(current_snapshot);
- MC_UNSET_RAW_MEM;
- }
+ cursor = 0;
+
+ xbt_dynar_foreach(successors, cursor, pair_succ){
- }
+ if(search_cycle == 1){
-
- 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;
+ if((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2)){
+
+ if((reached_num = is_reached_acceptance_pair(pair_succ->num, pair_succ->automaton_state)) != -1){
+
+ XBT_INFO("Next pair (depth = %d, %u interleave) already reached (equal to state %d) !", xbt_fifo_size(mc_stack_liveness) + 1, MC_state_interleave_size(pair_succ->graph_state), reached_num);
-}
+ 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(mc_stats);
+ xbt_abort();
+ }else{
+ if(is_visited_pair(pair_succ->num, pair_succ->automaton_state) != -1){
-/********************* Double-DFS stateless *******************/
+ XBT_DEBUG("Next pair already visited !");
+ break;
+
+ }else{
-void MC_pair_stateless_delete(mc_pair_stateless_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_DEBUG("Next pair (depth =%d) -> Acceptance pair (%s)", xbt_fifo_size(mc_stack_liveness) + 1, pair_succ->automaton_state->id);
-mc_pair_stateless_t new_pair_stateless(mc_state_t sg, xbt_state_t st){
- mc_pair_stateless_t p = NULL;
- p = xbt_new0(s_mc_pair_stateless_t, 1);
- p->automaton_state = st;
- p->graph_state = sg;
- mc_stats_pair->expanded_pairs++;
- return p;
-}
+ XBT_DEBUG("Acceptance pairs : %lu", xbt_dynar_length(acceptance_pairs));
+ MC_SET_RAW_MEM;
+ xbt_fifo_unshift(mc_stack_liveness, pair_succ);
+ MC_UNSET_RAW_MEM;
+
+ MC_ddfs(search_cycle);
+
+ }
+ }
-void MC_ddfs_stateless_init(xbt_automaton_t a){
+ }else{
- XBT_DEBUG("**************************************************");
- XBT_DEBUG("Double-DFS stateless init");
- XBT_DEBUG("**************************************************");
-
- mc_pair_stateless_t mc_initial_pair = NULL;
- mc_state_t initial_graph_state = NULL;
- smx_process_t process;
-
- MC_wait_for_requests();
+ if(is_visited_pair(pair_succ->num, pair_succ->automaton_state) != -1){
- MC_SET_RAW_MEM;
- 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("Next pair already visited !");
+ break;
+
+ }else{
- reached_pairs = xbt_dynar_new(sizeof(mc_pair_reached_t), NULL);
+ MC_SET_RAW_MEM;
+ xbt_fifo_unshift(mc_stack_liveness, pair_succ);
+ MC_UNSET_RAW_MEM;
+
+ MC_ddfs(search_cycle);
+ }
+
+ }
- initial_snapshot = xbt_new0(s_mc_snapshot_t, 1);
- MC_take_snapshot(initial_snapshot);
+ }else{
- MC_UNSET_RAW_MEM;
+ if(is_visited_pair(pair_succ->num, pair_succ->automaton_state) != -1){
- unsigned int cursor = 0;
- xbt_state_t state;
+ XBT_DEBUG("Next pair already visited !");
+ break;
+
+ }else{
+
+ if(((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2))){
- xbt_dynar_foreach(a->states, cursor, state){
- if(state->type == -1){
-
- MC_SET_RAW_MEM;
- mc_initial_pair = new_pair_stateless(initial_graph_state, state);
- xbt_fifo_unshift(mc_stack_liveness_stateless, mc_initial_pair);
- MC_UNSET_RAW_MEM;
+ XBT_DEBUG("Next pair (depth =%d) -> Acceptance pair (%s)", xbt_fifo_size(mc_stack_liveness) + 1, pair_succ->automaton_state->id);
- if(cursor == 0){
- MC_ddfs_stateless(a, 0, 0);
- }else{
- MC_restore_snapshot(initial_snapshot);
- MC_UNSET_RAW_MEM;
- MC_ddfs_stateless(a, 0, 0);
- }
- }else{
- if(state->type == 2){
-
- MC_SET_RAW_MEM;
- mc_initial_pair = new_pair_stateless(initial_graph_state, state);
- xbt_fifo_unshift(mc_stack_liveness_stateless, mc_initial_pair);
- MC_UNSET_RAW_MEM;
-
- if(cursor == 0){
- MC_ddfs_stateless(a, 1, 0);
- }else{
- MC_restore_snapshot(initial_snapshot);
- MC_UNSET_RAW_MEM;
- MC_ddfs_stateless(a, 1, 0);
- }
- }
- }
- }
+ set_acceptance_pair_reached(pair_succ->num, pair_succ->automaton_state);
-}
+ search_cycle = 1;
+ XBT_DEBUG("Acceptance pairs : %lu", xbt_dynar_length(acceptance_pairs));
-void MC_ddfs_stateless(xbt_automaton_t a, int search_cycle, int replay){
+ }
- smx_process_t process;
- mc_pair_stateless_t current_pair = NULL;
+ MC_SET_RAW_MEM;
+ xbt_fifo_unshift(mc_stack_liveness, pair_succ);
+ MC_UNSET_RAW_MEM;
+
+ MC_ddfs(search_cycle);
- if(xbt_fifo_size(mc_stack_liveness_stateless) == 0)
- return;
+ }
+
+ }
- if(replay == 1){
- MC_replay_liveness(mc_stack_liveness_stateless);
- current_pair = (mc_pair_stateless_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack_liveness_stateless));
- xbt_swag_foreach(process, simix_global->process_list){
- if(MC_process_is_enabled(process)){
- MC_state_interleave_process(current_pair->graph_state, process);
- }
- }
- }
+ /* Restore system before checking others successors */
+ if(cursor != (xbt_dynar_length(successors) - 1))
+ MC_replay_liveness(mc_stack_liveness, 1);
+
+ }
- /* Get current pair */
- current_pair = (mc_pair_stateless_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack_liveness_stateless));
+ 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);
+ }
+ }
- /* Update current state in buchi automaton */
- a->current_state = current_pair->automaton_state;
- XBT_DEBUG("********************* ( Depth = %d, search_cycle = %d )", xbt_fifo_size(mc_stack_liveness_stateless), 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));
-
-
- 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 = 0;
- int res;
+ }else{
- mc_pair_stateless_t next_pair = NULL;
- mc_pair_stateless_t pair_succ;
-
- xbt_dynar_t successors = NULL;
-
- MC_SET_RAW_MEM;
- successors = xbt_dynar_new(sizeof(mc_pair_stateless_t), NULL);
- MC_UNSET_RAW_MEM;
+ mc_stats->executed_transitions++;
+
+ XBT_DEBUG("No more request to execute in this state, search evolution in Büchi Automaton.");
- while((req = MC_state_get_request(current_pair->graph_state, &value)) != NULL){
-
+ MC_SET_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);
- }
+ /* Create the new expanded graph_state */
+ next_graph_state = MC_state_new();
- //sleep(1);
+ xbt_dynar_reset(successors);
- MC_state_set_executed_request(current_pair->graph_state, req, value);
-
- /* Answer the request */
- SIMIX_request_pre(req, value);
+ MC_UNSET_RAW_MEM;
- /* Wait for requests (schedules processes) */
- MC_wait_for_requests();
+ cursor= 0;
+ xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){
- MC_SET_RAW_MEM;
+ res = MC_automaton_evaluate_label(transition_succ->label);
- /* Create the new expanded graph_state */
- next_graph_state = MC_state_pair_new();
+ if(res == 1){ // enabled transition in automaton
+ MC_SET_RAW_MEM;
+ next_pair = MC_pair_new(next_graph_state, transition_succ->dst, MC_state_interleave_size(next_graph_state));
+ xbt_dynar_push(successors, &next_pair);
+ MC_UNSET_RAW_MEM;
+ }
- /* 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);
}
- }
-
- 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);
+ 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 = MC_pair_new(next_graph_state, transition_succ->dst, MC_state_interleave_size(next_graph_state));
+ xbt_dynar_push(successors, &next_pair);
+ 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);
- xbt_dynar_push(successors, &next_pair);
- 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_num = is_reached_acceptance_pair(pair_succ->num, pair_succ->automaton_state)) != -1){
+
+ XBT_INFO("Next pair (depth = %d) already reached (equal to state %d)!", xbt_fifo_size(mc_stack_liveness) + 1, reached_num);
+
+ 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(mc_stats);
+ xbt_abort();
+
+ }else{
+
+ if(is_visited_pair(pair_succ->num, pair_succ->automaton_state) != -1){
+
+ XBT_DEBUG("Next pair already visited !");
+ break;
+
+ }else{
+
+ XBT_INFO("Next pair (depth = %d) -> Acceptance pair (%s)", xbt_fifo_size(mc_stack_liveness) + 1, pair_succ->automaton_state->id);
+
+ XBT_INFO("Acceptance pairs : %lu", xbt_dynar_length(acceptance_pairs));
+
+ MC_SET_RAW_MEM;
+ xbt_fifo_unshift(mc_stack_liveness, pair_succ);
+ MC_UNSET_RAW_MEM;
+
+ MC_ddfs(search_cycle);
+
+ }
+
+ }
+
+ }else{
+
+ if(is_visited_pair(pair_succ->num, pair_succ->automaton_state) != -1){
+
+ XBT_DEBUG("Next pair already visited !");
+ break;
+
+ }else{
+
+ MC_SET_RAW_MEM;
+ xbt_fifo_unshift(mc_stack_liveness, pair_succ);
+ MC_UNSET_RAW_MEM;
+
+ MC_ddfs(search_cycle);
+
+ }
+
+ }
+
- cursor = 0;
-
- xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){
+ }else{
- res = MC_automaton_evaluate_label(a, transition_succ->label);
-
- if(res == 2){ // enabled transition in automaton
- MC_SET_RAW_MEM;
- next_pair = new_pair_stateless(next_graph_state, transition_succ->dst);
- xbt_dynar_push(successors, &next_pair);
- MC_UNSET_RAW_MEM;
- }
+ if(is_visited_pair(pair_succ->num, pair_succ->automaton_state) != -1){
- }
+ XBT_DEBUG("Next pair already visited !");
+ break;
+
+ }else{
-
- if(xbt_dynar_length(successors) == 0){
- MC_SET_RAW_MEM;
- next_pair = new_pair_stateless(next_graph_state, current_pair->automaton_state);
- xbt_dynar_push(successors, &next_pair);
- MC_UNSET_RAW_MEM;
- }
+ if(((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2))){
- cursor = 0;
+ set_acceptance_pair_reached(pair_succ->num, pair_succ->automaton_state);
+
+ search_cycle = 1;
- xbt_dynar_foreach(successors, cursor, pair_succ){
-
- 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_stateless(mc_stack_liveness_stateless);
- MC_dump_stack_liveness_stateless(mc_stack_liveness_stateless);
- MC_print_statistics_pairs(mc_stats_pair);
- exit(0);
- }
-
- MC_SET_RAW_MEM;
- xbt_fifo_unshift(mc_stack_liveness_stateless, pair_succ);
- MC_UNSET_RAW_MEM;
+ XBT_INFO("Acceptance pairs : %lu", xbt_dynar_length(acceptance_pairs));
- MC_ddfs_stateless(a, search_cycle, 0);
+ }
-
- if((search_cycle == 0) && ((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2))){
+ MC_SET_RAW_MEM;
+ xbt_fifo_unshift(mc_stack_liveness, pair_succ);
+ MC_UNSET_RAW_MEM;
+
+ MC_ddfs(search_cycle);
+
+ }
+
+ }
- XBT_DEBUG("Acceptance pair %p : graph=%p, automaton=%p(%s)", pair_succ, pair_succ->graph_state, pair_succ->automaton_state, pair_succ->automaton_state->id);
- int res = set_pair_reached(a);
+ /* Restore system before checking others successors */
+ if(cursor != xbt_dynar_length(successors) - 1)
+ MC_replay_liveness(mc_stack_liveness, 1);
- MC_SET_RAW_MEM;
- xbt_fifo_unshift(mc_stack_liveness_stateless, pair_succ);
- MC_UNSET_RAW_MEM;
-
- MC_ddfs_stateless(a, 1, 1);
-
- if(res){
- MC_SET_RAW_MEM;
- xbt_dynar_pop(reached_pairs, NULL);
- MC_UNSET_RAW_MEM;
- }
- }
- }
+ }
+ }
+
+ }else{
+
+ XBT_WARN("/!\\ Max depth reached ! /!\\ ");
if(MC_state_interleave_size(current_pair->graph_state) > 0){
- XBT_DEBUG("Backtracking to depth %u", xbt_fifo_size(mc_stack_liveness_stateless));
- MC_replay_liveness(mc_stack_liveness_stateless);
- }
-
+ 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;
- xbt_fifo_shift(mc_stack_liveness_stateless);
- XBT_DEBUG("Pair (graph=%p, automaton =%p, search_cycle = %u) shifted in stack", current_pair->graph_state, current_pair->automaton_state, search_cycle);
+ pair_to_remove = xbt_fifo_shift(mc_stack_liveness);
+ xbt_fifo_remove(mc_stack_liveness, pair_to_remove);
+ pair_to_remove = NULL;
+ if((current_pair->automaton_state->type == 1) || (current_pair->automaton_state->type == 2)){
+ remove_acceptance_pair(current_pair->num);
+ }
MC_UNSET_RAW_MEM;
}
-
