"Logging specific to algorithms for liveness properties verification");
xbt_dynar_t reached_pairs;
+xbt_dynar_t visited_pairs;
xbt_dynar_t successors;
int create_dump(int pair)
if(wait(&status) < 0)
perror("wait");
if(WIFSIGNALED(status) && WCOREDUMP(status)){
- char *core_name = malloc(20);
+ char *core_name = xbt_malloc(20);
sprintf(core_name,"core_%d", pair);
rename("core", core_name);
free(core_name);
int reached(xbt_state_t st){
- raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
MC_SET_RAW_MEM;
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_liveness();
+ new_pair->system_state = MC_take_snapshot();
/* Get values of propositional symbols */
int res;
MC_UNSET_RAW_MEM;
- if(xbt_dynar_is_empty(reached_pairs) || !compare){
+ 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;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
return 0;
mc_pair_reached_t pair_test = NULL;
xbt_dynar_foreach(reached_pairs, cursor, pair_test){
- XBT_INFO("Pair reached #%d", pair_test->nb);
+ 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){
MC_UNSET_RAW_MEM;
return 1;
- }
+ }
}else{
- XBT_INFO("Different values of propositional symbols");
+ XBT_DEBUG("Different values of propositional symbols");
}
}else{
- XBT_INFO("Different automaton state");
+ XBT_DEBUG("Different automaton state");
}
}
if(raw_mem_set)
MC_SET_RAW_MEM;
- else
- MC_UNSET_RAW_MEM;
-
+
compare = 0;
return 0;
void set_pair_reached(xbt_state_t st){
- raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
MC_SET_RAW_MEM;
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_liveness();
+ pair->system_state = MC_take_snapshot();
/* Get values of propositional symbols */
unsigned int cursor = 0;
if(raw_mem_set)
MC_SET_RAW_MEM;
- else
+
+}
+
+int visited(xbt_state_t st){
+
+ if(_sg_mc_visited == 0)
+ return 0;
+
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
+ MC_SET_RAW_MEM;
+
+ 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)){
+
+ MC_SET_RAW_MEM;
+ /* New pair visited */
+ xbt_dynar_push(visited_pairs, &new_pair);
+ MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+
+ return 0;
+
+ }else{
+
+ 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");
+ }
+ }
+
+ if(xbt_dynar_length(visited_pairs) == _sg_mc_visited){
+ xbt_dynar_remove_at(visited_pairs, 0, NULL);
+ }
+
+ /* New pair visited */
+ xbt_dynar_push(visited_pairs, &new_pair);
+
MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+
+ return 0;
+ }
}
void MC_pair_delete(mc_pair_t pair){
/********************* Double-DFS stateless *******************/
+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);
+ }
+}
+
+void pair_visited_free_voidp(void *p){
+ pair_visited_free((mc_pair_visited_t) * (void **) p);
+}
+
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);
}
void MC_ddfs_init(void){
- raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ initial_state_liveness->raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
- XBT_INFO("**************************************************");
- XBT_INFO("Double-DFS init");
- XBT_INFO("**************************************************");
+ XBT_DEBUG("**************************************************");
+ XBT_DEBUG("Double-DFS init");
+ XBT_DEBUG("**************************************************");
mc_pair_stateless_t mc_initial_pair = NULL;
mc_state_t initial_graph_state = NULL;
}
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 = xbt_new0(s_mc_global_t, 1);
- initial_state_liveness->initial_snapshot = MC_take_snapshot_liveness();
+ initial_state_liveness->snapshot = MC_take_snapshot();
MC_UNSET_RAW_MEM;
MC_UNSET_RAW_MEM;
if(cursor != 0){
- MC_restore_snapshot(initial_state_liveness->initial_snapshot);
+ MC_restore_snapshot(initial_state_liveness->snapshot);
MC_UNSET_RAW_MEM;
}
set_pair_reached(state);
if(cursor != 0){
- MC_restore_snapshot(initial_state_liveness->initial_snapshot);
+ MC_restore_snapshot(initial_state_liveness->snapshot);
MC_UNSET_RAW_MEM;
}
}
}
- if(raw_mem_set)
+ if(initial_state_liveness->raw_mem_set)
MC_SET_RAW_MEM;
else
MC_UNSET_RAW_MEM;
void MC_ddfs(int search_cycle){
- raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ //initial_state_liveness->raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
smx_process_t process;
mc_pair_stateless_t current_pair = NULL;
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) < MAX_DEPTH_LIVENESS){
+ if(xbt_fifo_size(mc_stack_liveness) < _sg_mc_max_depth){
if(current_pair->requests > 0){
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("Process %lu enabled with simcall : %d", process->pid, (&process->simcall)->call);
+ }
+ }
+
xbt_swag_foreach(process, simix_global->process_list){
if(MC_process_is_enabled(process)){
MC_state_interleave_process(next_graph_state, process);
}else{
- XBT_DEBUG("Next pair (depth =%d) -> Acceptance pair (%s)", xbt_fifo_size(mc_stack_liveness) + 1, pair_succ->automaton_state->id);
+ if(visited(pair_succ->automaton_state)){
- XBT_DEBUG("Reached pairs : %lu", xbt_dynar_length(reached_pairs));
+ XBT_DEBUG("Next pair already visited !");
+ break;
+
+ }else{
- MC_SET_RAW_MEM;
- xbt_fifo_unshift(mc_stack_liveness, pair_succ);
- 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);
+
+ XBT_DEBUG("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);
+ 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);
+ if(visited(pair_succ->automaton_state)){
+
+ 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);
+ }
}
}else{
+
+ if(visited(pair_succ->automaton_state)){
+
+ XBT_DEBUG("Next pair already visited !");
+ break;
+
+ }else{
- if(((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2))){
+ if(((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2))){
- XBT_DEBUG("Next pair (depth =%d) -> Acceptance pair (%s)", xbt_fifo_size(mc_stack_liveness) + 1, pair_succ->automaton_state->id);
+ 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);
+ set_pair_reached(pair_succ->automaton_state);
- search_cycle = 1;
+ search_cycle = 1;
- XBT_DEBUG("Reached pairs : %lu", xbt_dynar_length(reached_pairs));
+ XBT_DEBUG("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_SET_RAW_MEM;
+ xbt_fifo_unshift(mc_stack_liveness, pair_succ);
+ MC_UNSET_RAW_MEM;
- MC_ddfs(search_cycle);
+ 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){
}
+ }else{
+
+ XBT_DEBUG("No more request to execute in this state, search evolution in Büchi Automaton.");
+
+ MC_SET_RAW_MEM;
+
+ /* Create the new expanded graph_state */
+ next_graph_state = MC_state_pair_new();
+
+ 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(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;
+ }
+
+ }
+
+ 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;
+ }
+
+ }
+
+ 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);
+
+ }
+
+
+ }else{
+
+ if(((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2))){
+
+ set_pair_reached(pair_succ->automaton_state);
+
+ 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);
+
+ }
+
}
}else{
- XBT_DEBUG("Max depth reached");
-
+ 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) == MAX_DEPTH_LIVENESS ){
+ 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);
+ 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)){
- xbt_dynar_pop(reached_pairs, NULL);
+ 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(raw_mem_set)
- MC_SET_RAW_MEM;
- else
- MC_UNSET_RAW_MEM;
+ /*if(initial_state_liveness->raw_mem_set)
+ MC_SET_RAW_MEM;*/
}
