-#include "private.h"
-#include "unistd.h"
+/* Copyright (c) 2008-2012 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;
-xbt_dynar_t successors = NULL;
-extern mc_snapshot_t initial_snapshot;
-
-/* Global variables for stateless algorithm */
-mc_snapshot_t snapshot = NULL;
-
-/* Global variables for stateful algorithm */
-mc_snapshot_t next_snapshot = NULL;
-mc_snapshot_t current_snapshot = NULL;
-
-
-int snapshot_compare(mc_snapshot_t s1, mc_snapshot_t s2){
+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(s1->num_reg != s2->num_reg)
- return 1;
-
- int i, errors=0;
-
- for(i=0 ; i< s1->num_reg ; i++){
-
- if(s1->regions[i]->size != s2->regions[i]->size)
- return 1;
+ 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;
- if(s1->regions[i]->start_addr != s2->regions[i]->start_addr)
- return 1;
+ case -1:
+ // An error occurred, shouldn't happen
+ perror("fork");
+ return -1;
- if(s1->regions[i]->type != s2->regions[i]->type)
- return 1;
-
- if(s1->regions[i]->type == 0){
- if(mmalloc_compare_heap(s1->regions[i]->start_addr, s2->regions[i]->start_addr)){
- XBT_DEBUG("Different heap (mmalloc_compare)");
- sleep(1);
- errors++;
- }
- }else{
- if(memcmp(s1->regions[i]->data, s2->regions[i]->data, s1->regions[i]->size) != 0){
- XBT_DEBUG("Different memcmp for data in libsimgrid");
- sleep(1);
- errors++;
- }
+ 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 = malloc(20);
+ sprintf(core_name,"core_%d", pair);
+ rename("core", core_name);
+ free(core_name);
}
-
-
}
- return (errors>0);
-
+ return 0;
}
-int reached(xbt_automaton_t a, xbt_state_t st, mc_snapshot_t s){
+int reached(xbt_state_t st){
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
- if(xbt_dynar_is_empty(reached_pairs)){
+ MC_SET_RAW_MEM;
+
+ 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 = xbt_new0(s_mc_snapshot_t, 1);
+ MC_take_snapshot_liveness(new_pair->system_state);
+
+ /* 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(reached_pairs) || !compare){
+
+ MC_SET_RAW_MEM;
+ /* New pair reached */
+ xbt_dynar_push(reached_pairs, &new_pair);
+ MC_UNSET_RAW_MEM;
+
return 0;
+
}else{
- MC_SET_RAW_MEM;
-
- xbt_dynar_t prop_ato = xbt_dynar_new(sizeof(int), NULL);
- /* Get values of propositional symbols */
- 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_as(prop_ato, int, res);
- }
+ MC_SET_RAW_MEM;
cursor = 0;
- mc_pair_reached_t pair_test;
-
+ mc_pair_reached_t pair_test = NULL;
+
xbt_dynar_foreach(reached_pairs, cursor, pair_test){
+ XBT_INFO("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, prop_ato) == 0){
- if(snapshot_compare(pair_test->system_state, s) == 0){
- MC_UNSET_RAW_MEM;
- return 1;
- }
- }
+ 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_INFO("Different values of propositional symbols");
+ }
+ }else{
+ XBT_INFO("Different automaton state");
}
}
+ /* New pair reached */
+ xbt_dynar_push(reached_pairs, &new_pair);
+
MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
+ compare = 0;
+
return 0;
}
}
-void set_pair_reached(xbt_automaton_t a, xbt_state_t st, mc_snapshot_t sn){
+void set_pair_reached(xbt_state_t st){
+
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
MC_SET_RAW_MEM;
-
+
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 = sn;
-
+ pair->system_state = xbt_new0(s_mc_snapshot_t, 1);
+ MC_take_snapshot_liveness(pair->system_state);
+
/* Get values of propositional symbols */
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)();
+ 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);
}
-
+
xbt_dynar_push(reached_pairs, &pair);
MC_UNSET_RAW_MEM;
-
-
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ 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->automaton_state); -> FIXME : à implémenter
xbt_free(pair);
}
-int MC_automaton_evaluate_label(xbt_automaton_t a, xbt_exp_label_t l){
+int MC_automaton_evaluate_label(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);
+ 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){
+ 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 stateless *******************/
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);
}
return p;
}
+void MC_ddfs_init(void){
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
-void MC_ddfs_stateless_init(xbt_automaton_t a){
+ XBT_INFO("**************************************************");
+ XBT_INFO("Double-DFS init");
+ XBT_INFO("**************************************************");
- 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();
}
}
- reached_pairs = xbt_dynar_new(sizeof(mc_pair_reached_t), NULL);
+ reached_pairs = xbt_dynar_new(sizeof(mc_pair_reached_t), NULL);
successors = xbt_dynar_new(sizeof(mc_pair_stateless_t), NULL);
- snapshot = xbt_new0(s_mc_snapshot_t, 1);
- initial_snapshot = xbt_new0(s_mc_snapshot_t, 1);
- MC_take_snapshot(initial_snapshot);
+ /* Save the initial state */
+ initial_snapshot_liveness = xbt_new0(s_mc_snapshot_t, 1);
+ MC_take_snapshot_liveness(initial_snapshot_liveness);
MC_UNSET_RAW_MEM;
+ /* Get .plt section (start and end addresses) for data libsimgrid comparison */
+ get_plt_section();
+
unsigned int cursor = 0;
xbt_state_t state;
- xbt_dynar_foreach(a->states, cursor, state){
+ 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_stateless, mc_initial_pair);
+ xbt_fifo_unshift(mc_stack_liveness, mc_initial_pair);
MC_UNSET_RAW_MEM;
- 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);
+ if(cursor != 0){
+ MC_restore_snapshot(initial_snapshot_liveness);
+ MC_UNSET_RAW_MEM;
}
+
+ MC_ddfs(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_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);
- }
+ 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;
+
+ set_pair_reached(state);
+
+ if(cursor != 0){
+ MC_restore_snapshot(initial_snapshot_liveness);
+ MC_UNSET_RAW_MEM;
+ }
+
+ MC_ddfs(1);
+
}
}
- }
+ }
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
}
-void MC_ddfs_stateless(xbt_automaton_t a, int search_cycle, int replay){
+void MC_ddfs(int search_cycle){
+
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
smx_process_t process;
mc_pair_stateless_t current_pair = NULL;
- if(xbt_fifo_size(mc_stack_liveness_stateless) == 0)
+ if(xbt_fifo_size(mc_stack_liveness) == 0)
return;
- if(replay == 1){
- MC_replay_liveness(mc_stack_liveness_stateless, 0);
- 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);
- }
- }
- }
/* Get current pair */
- current_pair = (mc_pair_stateless_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack_liveness_stateless));
+ current_pair = (mc_pair_stateless_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack_liveness));
/* Update current state in buchi automaton */
- a->current_state = current_pair->automaton_state;
+ _mc_property_automaton->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));
+ XBT_INFO("********************* ( Depth = %d, search_cycle = %d )", xbt_fifo_size(mc_stack_liveness), search_cycle);
-
mc_stats_pair->visited_pairs++;
+ //sleep(1);
+
int value;
mc_state_t next_graph_state = NULL;
- smx_req_t req = NULL;
+ smx_simcall_t req = NULL;
char *req_str;
xbt_transition_t transition_succ;
mc_pair_stateless_t next_pair = NULL;
mc_pair_stateless_t pair_succ;
+
+ if(xbt_fifo_size(mc_stack_liveness) < MAX_DEPTH_LIVENESS){
+ if(current_pair->requests > 0){
- if(current_pair->requests > 0){
-
- while((req = MC_state_get_request(current_pair->graph_state, &value)) != NULL && (xbt_fifo_size(mc_stack_liveness_stateless) < MAX_DEPTH_LIVENESS)){
+ 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 */
+
+ req_str = MC_request_to_string(req, value);
+ XBT_INFO("Execute: %s", req_str);
+ xbt_free(req_str);
- //sleep(1);
+ MC_state_set_executed_request(current_pair->graph_state, req, value);
- MC_state_set_executed_request(current_pair->graph_state, req, value);
-
- /* 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;
- MC_SET_RAW_MEM;
+ /* Create the new expanded graph_state */
+ next_graph_state = MC_state_pair_new();
- /* Create the new expanded graph_state */
- 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)){
- 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){
- 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 == 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;
+ }
- 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;
- }
+ }
- }
-
- cursor = 0;
+ cursor = 0;
- xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){
+ xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){
- res = MC_automaton_evaluate_label(a, 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;
- }
+ 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;
+ }
- }
+ }
-
- if(xbt_dynar_length(successors) == 0){
- MC_SET_RAW_MEM;
- next_pair = new_pair_stateless(next_graph_state, current_pair->automaton_state, MC_state_interleave_size(next_graph_state));
- xbt_dynar_push(successors, &next_pair);
- MC_UNSET_RAW_MEM;
- }
+ cursor = 0;
+
+ xbt_dynar_foreach(successors, cursor, pair_succ){
- /*MC_SET_RAW_MEM;
- MC_take_snapshot(snapshot);
- MC_UNSET_RAW_MEM;*/
+ if(search_cycle == 1){
- cursor = 0;
-
- xbt_dynar_foreach(successors, cursor, pair_succ){
+ 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));
- if((search_cycle == 1) && ((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2)) ){
-
- MC_SET_RAW_MEM;
- MC_take_snapshot(snapshot);
- MC_UNSET_RAW_MEM;
-
- if(reached(a, pair_succ->automaton_state, snapshot) == 1){
-
- XBT_DEBUG("Next pair (depth = %d) already reached !", xbt_fifo_size(mc_stack_liveness_stateless) + 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);
- }
- }
-
+ 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);
+ exit(0);
- MC_SET_RAW_MEM;
- xbt_fifo_unshift(mc_stack_liveness_stateless, pair_succ);
- MC_UNSET_RAW_MEM;
+ }else{
- if(xbt_fifo_size(mc_stack_liveness_stateless) == MAX_DEPTH_LIVENESS){
- XBT_DEBUG("Maximum depth reached");
- }
-
- MC_ddfs_stateless(a, search_cycle, 0);
+ XBT_INFO("Next pair (depth =%d) -> Acceptance pair : graph=%p, automaton=%p(%s)", xbt_fifo_size(mc_stack_liveness) + 1, pair_succ->graph_state, pair_succ->automaton_state, pair_succ->automaton_state->id);
+ XBT_INFO("Reached pairs : %lu", xbt_dynar_length(reached_pairs));
- if((search_cycle == 0) && ((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2)) && (xbt_fifo_size(mc_stack_liveness_stateless) < (MAX_DEPTH_LIVENESS - 1))){
-
- XBT_DEBUG("Acceptance pair : graph=%p, automaton=%p(%s)", pair_succ->graph_state, pair_succ->automaton_state, pair_succ->automaton_state->id);
-
- /* Pair shifted from stack when first MC_ddfs finished and returned at this point */
- MC_SET_RAW_MEM;
- xbt_fifo_unshift(mc_stack_liveness_stateless, pair_succ);
- MC_UNSET_RAW_MEM;
-
- /* Restore system before starting detection of acceptance cycle */
- MC_replay_liveness(mc_stack_liveness_stateless, 0);
-
- MC_SET_RAW_MEM;
- MC_take_snapshot(snapshot);
- MC_UNSET_RAW_MEM;
-
- set_pair_reached(a, pair_succ->automaton_state, snapshot);
-
- XBT_DEBUG("Detection of acceptance cycle enabled");
+ 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);
+
+ }
+
+ }else{
+
+ if(((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2))){
+
+ XBT_INFO("Next pair (depth =%d) -> Acceptance pair : graph=%p, automaton=%p(%s)", xbt_fifo_size(mc_stack_liveness) + 1, pair_succ->graph_state, pair_succ->automaton_state, pair_succ->automaton_state->id);
- MC_ddfs_stateless(a, 1, 1);
-
- /* No acceptance cycle with this acceptance pair, we remove it from the list reached_pairs */
- MC_SET_RAW_MEM;
- xbt_dynar_pop(reached_pairs, NULL);
- MC_UNSET_RAW_MEM;
-
- }
-
- /* Restore system before checking others successors */
- MC_replay_liveness(mc_stack_liveness_stateless, 1);
-
- }
+ set_pair_reached(pair_succ->automaton_state);
- if(xbt_dynar_is_empty(successors)){
- XBT_DEBUG("Backtracking to depth %u", xbt_fifo_size(mc_stack_liveness_stateless));
- MC_replay_liveness(mc_stack_liveness_stateless, 0);
- }
+ search_cycle = 1;
+
+ 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);
+
+ }
+
+
+ /* Restore system before checking others successors */
+ if(cursor != (xbt_dynar_length(successors) - 1))
+ MC_replay_liveness(mc_stack_liveness, 1);
- }
+
+ }
+
+ if(MC_state_interleave_size(current_pair->graph_state) > 0){
+ XBT_INFO("Backtracking to depth %d", xbt_fifo_size(mc_stack_liveness));
+ MC_replay_liveness(mc_stack_liveness, 0);
+ }
+ }
- }else{ /*No request to execute, search evolution in Büchi automaton */
-
- if((xbt_fifo_size(mc_stack_liveness_stateless) < MAX_DEPTH_LIVENESS)){
+ }else{ /*No request to execute, search evolution in Büchi automaton */
MC_SET_RAW_MEM;
cursor= 0;
xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){
- res = MC_automaton_evaluate_label(a, transition_succ->label);
+ res = MC_automaton_evaluate_label(transition_succ->label);
- 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;
- }
+ 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;
+ }
}
xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){
- res = MC_automaton_evaluate_label(a, 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;
- }
-
- }
+ 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;
+ }
-
- if(xbt_dynar_length(successors) == 0){
- MC_SET_RAW_MEM;
- next_pair = new_pair_stateless(next_graph_state, current_pair->automaton_state, MC_state_interleave_size(next_graph_state));
- xbt_dynar_push(successors, &next_pair);
- MC_UNSET_RAW_MEM;
}
cursor = 0;
-
+
xbt_dynar_foreach(successors, cursor, pair_succ){
- if((search_cycle == 1) && ((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2)) ){
-
- MC_SET_RAW_MEM;
- MC_take_snapshot(snapshot);
- MC_UNSET_RAW_MEM;
-
- if(reached(a, pair_succ->automaton_state, snapshot) == 1){
-
- XBT_DEBUG("Next pair (depth = %d) already reached !", xbt_fifo_size(mc_stack_liveness_stateless) + 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;
+ 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);
+ exit(0);
+
+ }else{
+
+ XBT_INFO("Next pair (depth = %d) -> Acceptance pair : graph=%p, automaton=%p(%s)", xbt_fifo_size(mc_stack_liveness) + 1, pair_succ->graph_state, pair_succ->automaton_state, 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);
+
+ }
- MC_ddfs_stateless(a, search_cycle, 0);
-
- if((search_cycle == 0) && ((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2)) && (xbt_fifo_size(mc_stack_liveness_stateless) < (MAX_DEPTH_LIVENESS - 1))){
-
- XBT_DEBUG("Acceptance pair : graph=%p, automaton=%p(%s)", pair_succ->graph_state, pair_succ->automaton_state, pair_succ->automaton_state->id);
-
- /* Restore system before taking snapshot of system */
- MC_replay_liveness(mc_stack_liveness_stateless, 0);
-
- MC_SET_RAW_MEM;
- MC_take_snapshot(snapshot);
- MC_UNSET_RAW_MEM;
-
- set_pair_reached(a, pair_succ->automaton_state, snapshot);
-
- /* Pair shifted from stack when first MC_ddfs finished and returned at this point */
- MC_SET_RAW_MEM;
- xbt_fifo_unshift(mc_stack_liveness_stateless, pair_succ);
- MC_UNSET_RAW_MEM;
-
- XBT_DEBUG("Backtracking to depth %d, detection of acceptance cycle enabled", xbt_fifo_size(mc_stack_liveness_stateless));
+ }else{
- MC_ddfs_stateless(a, 1, 1);
-
- /* No acceptance cycle with this acceptance pair, we remove it from the list reached_pairs */
- MC_SET_RAW_MEM;
- xbt_dynar_pop(reached_pairs, NULL);
- MC_UNSET_RAW_MEM;
-
- }
-
- /* Restore system before checking others successors */
- MC_replay_liveness(mc_stack_liveness_stateless, 1);
-
- }
- }
-
- }
-
- MC_SET_RAW_MEM;
- if(xbt_fifo_size(mc_stack_liveness_stateless) == MAX_DEPTH_LIVENESS - 1){
- XBT_DEBUG("Pair (graph=%p, automaton =%p, search_cycle = %u) shifted in stack, maximum depth reached", current_pair->graph_state, current_pair->automaton_state, search_cycle);
- }else{
- XBT_DEBUG("Pair (graph=%p, automaton =%p, search_cycle = %u) shifted in stack", current_pair->graph_state, current_pair->automaton_state, search_cycle);
- }
- xbt_fifo_shift(mc_stack_liveness_stateless);
- MC_UNSET_RAW_MEM;
-
-}
+ if(((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2))){
-/********************* Double-DFS stateful without visited state *******************/
+ set_pair_reached(pair_succ->automaton_state);
+
+ search_cycle = 1;
-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;
-
-}
+ XBT_INFO("Reached pairs : %lu", xbt_dynar_length(reached_pairs));
-void MC_ddfs_stateful_init(xbt_automaton_t a){
+ }
- XBT_DEBUG("**************************************************");
- XBT_DEBUG("Double-DFS stateful without 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;
+ xbt_fifo_unshift(mc_stack_liveness, pair_succ);
+ MC_UNSET_RAW_MEM;
+
+ MC_ddfs(search_cycle);
+
+ }
- 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);
- }
- }
-
- reached_pairs = xbt_dynar_new(sizeof(mc_pair_reached_t), NULL);
- successors = xbt_dynar_new(sizeof(mc_pair_t), NULL);
- current_snapshot = xbt_new0(s_mc_snapshot_t, 1);
- next_snapshot = xbt_new0(s_mc_snapshot_t, 1);
-
- init_snapshot = xbt_new0(s_mc_snapshot_t, 1);
- 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_ddfs_stateful(a, 0, 0);
- }else{
- MC_restore_snapshot(init_snapshot);
- MC_UNSET_RAW_MEM;
- MC_ddfs_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_ddfs_stateful(a, 1, 0);
- }else{
- MC_restore_snapshot(init_snapshot);
- MC_UNSET_RAW_MEM;
- MC_ddfs_stateful(a, 1, 0);
- }
- }
- }
- }
-}
-
-
-void MC_ddfs_stateful(xbt_automaton_t a, int search_cycle, int restore){
-
- smx_process_t process = NULL;
- mc_pair_t current_pair = NULL;
-
- if(xbt_fifo_size(mc_stack_liveness_stateful) == 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));
-
- a->current_state = current_pair->automaton_state;
-
- //sleep(1);
-
- mc_stats_pair->visited_pairs++;
-
- int value;
- mc_state_t next_graph_state = NULL;
- smx_req_t req = NULL;
- char *req_str;
-
- mc_pair_t pair_succ;
- xbt_transition_t transition_succ;
- unsigned int cursor;
- int res;
-
- mc_pair_t next_pair = NULL;
-
- while((req = MC_state_get_request(current_pair->graph_state, &value)) != NULL){
-
- MC_SET_RAW_MEM;
- 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("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));
- 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);
- }
- }
-
- 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){ // 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){
-
- 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;
- }
-
-
- }
+ /* Restore system before checking others successors */
+ if(cursor != xbt_dynar_length(successors) - 1)
+ MC_replay_liveness(mc_stack_liveness, 1);
- 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;
-
- }
-
- cursor = 0;
- xbt_dynar_foreach(successors, cursor, pair_succ){
-
- if((search_cycle == 1) && ((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2))){
-
- if(reached(a, pair_succ->automaton_state, next_snapshot) == 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(1);
- }
}
-
-
- MC_SET_RAW_MEM;
- xbt_fifo_unshift(mc_stack_liveness_stateful, pair_succ);
- MC_UNSET_RAW_MEM;
-
- MC_ddfs_stateful(a, search_cycle, 0);
+
+ }
+ }else{
- 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);
- set_pair_reached(a, pair_succ->automaton_state, next_snapshot);
-
- MC_SET_RAW_MEM;
- xbt_fifo_unshift(mc_stack_liveness_stateful, pair_succ);
- MC_UNSET_RAW_MEM;
-
- MC_ddfs_stateful(a, 1, 0);
-
-
- MC_SET_RAW_MEM;
- xbt_dynar_pop(reached_pairs, NULL);
- MC_UNSET_RAW_MEM;
- }
-
- }
+ XBT_INFO("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_stateful));
- MC_restore_snapshot(current_snapshot);
- MC_UNSET_RAW_MEM;
- }
+ }
+ if(xbt_fifo_size(mc_stack_liveness) == MAX_DEPTH_LIVENESS ){
+ XBT_INFO("Pair (graph=%p, automaton =%p, search_cycle = %d, depth = %d) shifted in stack, maximum depth reached", current_pair->graph_state, current_pair->automaton_state, search_cycle, xbt_fifo_size(mc_stack_liveness) );
+ }else{
+ XBT_INFO("Pair (graph=%p, automaton =%p, search_cycle = %d, depth = %d) shifted in stack", current_pair->graph_state, current_pair->automaton_state, search_cycle, xbt_fifo_size(mc_stack_liveness) );
}
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);
+ xbt_fifo_shift(mc_stack_liveness);
+ if((current_pair->automaton_state->type == 1) || (current_pair->automaton_state->type == 2)){
+ xbt_dynar_pop(reached_pairs, NULL);
+ }
MC_UNSET_RAW_MEM;
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
}
