X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/bafef7b73131ceb40d273d98b1850823329ee689..3299a47e6bfb29938ceddb8e429d6d2105aabb04:/src/mc/mc_liveness.c diff --git a/src/mc/mc_liveness.c b/src/mc/mc_liveness.c index e1b7444da2..2ff658db94 100644 --- a/src/mc/mc_liveness.c +++ b/src/mc/mc_liveness.c @@ -1,4 +1,5 @@ -/* Copyright (c) 2008-2012 Da SimGrid Team. All rights reserved. */ +/* Copyright (c) 2011-2013. The 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. */ @@ -10,196 +11,342 @@ XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_liveness, mc, "Logging specific to algorithms for liveness properties verification"); -xbt_dynar_t reached_pairs; +/********* Global variables *********/ + +xbt_dynar_t acceptance_pairs; +xbt_dynar_t visited_pairs; xbt_dynar_t successors; +xbt_parmap_t parmap; -int create_dump(int pair) -{ - // Try to enable core dumps - struct rlimit core_limit; - core_limit.rlim_cur = RLIM_INFINITY; - core_limit.rlim_max = RLIM_INFINITY; - - if(setrlimit(RLIMIT_CORE, &core_limit) < 0) - fprintf(stderr, "setrlimit: %s\nWarning: core dumps may be truncated or non-existant\n", strerror(errno)); - - int status; - switch(fork()){ - case 0: - // We are the child process -- run the actual program - xbt_abort(); - break; - - case -1: - // An error occurred, shouldn't happen - perror("fork"); - return -1; - - default: - // We are the parent process -- wait for the child process to exit - if(wait(&status) < 0) - perror("wait"); - if(WIFSIGNALED(status) && WCOREDUMP(status)){ - char *core_name = malloc(20); - sprintf(core_name,"core_%d", pair); - rename("core", core_name); - free(core_name); - } +/********* Static functions *********/ + +static xbt_dynar_t get_atomic_propositions_values(){ + int res; + int_f_void_t f; + unsigned int cursor = 0; + xbt_automaton_propositional_symbol_t ps = NULL; + xbt_dynar_t values = xbt_dynar_new(sizeof(int), NULL); + + xbt_dynar_foreach(_mc_property_automaton->propositional_symbols, cursor, ps){ + f = (int_f_void_t)ps->function; + res = f(); + xbt_dynar_push_as(values, int, res); } - return 0; + return values; } -int reached(xbt_state_t st){ +static int get_search_interval(xbt_dynar_t all_pairs, mc_visited_pair_t pair, int *min, int *max){ - raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); 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 = MC_take_snapshot_liveness(); + int cursor = 0, previous_cursor, next_cursor; + mc_visited_pair_t pair_test; + int start = 0; + int end = xbt_dynar_length(all_pairs) - 1; - /* 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); + while(start <= end){ + cursor = (start + end) / 2; + pair_test = (mc_visited_pair_t)xbt_dynar_get_as(all_pairs, cursor, mc_visited_pair_t); + if(pair_test->nb_processes < pair->nb_processes){ + start = cursor + 1; + }else if(pair_test->nb_processes > pair->nb_processes){ + end = cursor - 1; + }else{ + if(pair_test->heap_bytes_used < pair->heap_bytes_used){ + start = cursor +1; + }else if(pair_test->heap_bytes_used > pair->heap_bytes_used){ + end = cursor - 1; + }else{ + *min = *max = cursor; + previous_cursor = cursor - 1; + while(previous_cursor >= 0){ + pair_test = (mc_visited_pair_t)xbt_dynar_get_as(all_pairs, previous_cursor, mc_visited_pair_t); + if(pair_test->nb_processes != pair->nb_processes || pair_test->heap_bytes_used != pair->heap_bytes_used) + break; + *min = previous_cursor; + previous_cursor--; + } + next_cursor = cursor + 1; + while(next_cursor < xbt_dynar_length(all_pairs)){ + pair_test = (mc_visited_pair_t)xbt_dynar_get_as(all_pairs, next_cursor, mc_visited_pair_t); + if(pair_test->nb_processes != pair->nb_processes || pair_test->heap_bytes_used != pair->heap_bytes_used) + break; + *max = next_cursor; + next_cursor++; + } + if(!raw_mem_set) + MC_UNSET_RAW_MEM; + return -1; + } + } } - - 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); + if(!raw_mem_set) MC_UNSET_RAW_MEM; - if(raw_mem_set) - MC_SET_RAW_MEM; - - return 0; + return cursor; +} + +static mc_visited_pair_t is_reached_acceptance_pair(int pair_num, xbt_automaton_state_t automaton_state, xbt_dynar_t atomic_propositions){ + + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + + MC_SET_RAW_MEM; + + mc_visited_pair_t pair = NULL; + pair = MC_visited_pair_new(pair_num, automaton_state, atomic_propositions); + pair->acceptance_pair = 1; + + if(xbt_dynar_is_empty(acceptance_pairs)){ + + xbt_dynar_push(acceptance_pairs, &pair); }else{ - MC_SET_RAW_MEM; - - cursor = 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(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_INFO("Different values of propositional symbols"); + int min = -1, max = -1, index; + //int res; + mc_visited_pair_t pair_test; + int cursor; + + index = get_search_interval(acceptance_pairs, pair, &min, &max); + + if(min != -1 && max != -1){ // Acceptance pair with same number of processes and same heap bytes used exists + /*res = xbt_parmap_mc_apply(parmap, snapshot_compare, xbt_dynar_get_ptr(acceptance_pairs, min), (max-min)+1, pair); + if(res != -1){ + if(!raw_mem_set) + MC_UNSET_RAW_MEM; + return ((mc_pair_t)xbt_dynar_get_as(acceptance_pairs, (min+res)-1, mc_pair_t))->num; + }*/ + cursor = min; + while(cursor <= max){ + pair_test = (mc_visited_pair_t)xbt_dynar_get_as(acceptance_pairs, cursor, mc_visited_pair_t); + if(xbt_automaton_state_compare(pair_test->automaton_state, pair->automaton_state) == 0){ + if(xbt_automaton_propositional_symbols_compare_value(pair_test->atomic_propositions, pair->atomic_propositions) == 0){ + if(snapshot_compare(pair_test, pair) == 0){ + XBT_INFO("Pair %d already reached (equal to pair %d) !", pair->num, pair_test->num); + + xbt_fifo_shift(mc_stack_liveness); + if(dot_output != NULL) + fprintf(dot_output, "\"%d\" -> \"%d\" [%s];\n", initial_state_liveness->prev_pair, pair_test->num, initial_state_liveness->prev_req); + + if(!raw_mem_set) + MC_UNSET_RAW_MEM; + + return NULL; + } + } } + cursor++; + } + xbt_dynar_insert_at(acceptance_pairs, min, &pair); + }else{ + pair_test = (mc_visited_pair_t)xbt_dynar_get_as(acceptance_pairs, index, mc_visited_pair_t); + if(pair_test->nb_processes < pair->nb_processes){ + xbt_dynar_insert_at(acceptance_pairs, index+1, &pair); }else{ - XBT_INFO("Different automaton state"); + if(pair_test->heap_bytes_used < pair->heap_bytes_used) + xbt_dynar_insert_at(acceptance_pairs, index + 1, &pair); + else + xbt_dynar_insert_at(acceptance_pairs, index, &pair); } } - - /* New pair reached */ - xbt_dynar_push(reached_pairs, &new_pair); + } + + if(!raw_mem_set) MC_UNSET_RAW_MEM; - if(raw_mem_set) - MC_SET_RAW_MEM; + return pair; - compare = 0; - - return 0; - - } } +static void remove_acceptance_pair(int pair_num){ -void set_pair_reached(xbt_state_t st){ + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); - 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 = MC_take_snapshot_liveness(); - - /* Get values of propositional symbols */ unsigned int cursor = 0; - xbt_propositional_symbol_t ps = NULL; - int res; - int_f_void_t f; + mc_visited_pair_t pair_test = NULL; - 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_foreach(acceptance_pairs, cursor, pair_test){ + if(pair_test->num == pair_num){ + break; + } } - xbt_dynar_push(reached_pairs, &pair); + xbt_dynar_remove_at(acceptance_pairs, cursor, &pair_test); - MC_UNSET_RAW_MEM; + pair_test->acceptance_removed = 1; - if(raw_mem_set) - MC_SET_RAW_MEM; - -} + if(_sg_mc_visited == 0){ + MC_visited_pair_delete(pair_test); + }else if(pair_test->visited_removed == 1){ + MC_visited_pair_delete(pair_test); + } -void MC_pair_delete(mc_pair_t pair){ - xbt_free(pair->graph_state->proc_status); - xbt_free(pair->graph_state); - xbt_free(pair); + if(!raw_mem_set) + MC_UNSET_RAW_MEM; } +static int is_visited_pair(mc_visited_pair_t pair, int pair_num, xbt_automaton_state_t automaton_state, xbt_dynar_t atomic_propositions){ + + if(_sg_mc_visited == 0) + return -1; + + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + + MC_SET_RAW_MEM; + + mc_visited_pair_t new_pair = NULL; + + if(pair == NULL){ + new_pair = MC_visited_pair_new(pair_num, automaton_state, atomic_propositions); + }else{ + new_pair = pair; + } + + if(xbt_dynar_is_empty(visited_pairs)){ + + xbt_dynar_push(visited_pairs, &new_pair); + + }else{ + + int min = -1, max = -1, index; + //int res; + mc_visited_pair_t pair_test; + int cursor; + + index = get_search_interval(visited_pairs, new_pair, &min, &max); + + if(min != -1 && max != -1){ // Visited pair with same number of processes and same heap bytes used exists + /*res = xbt_parmap_mc_apply(parmap, snapshot_compare, xbt_dynar_get_ptr(visited_pairs, min), (max-min)+1, pair); + if(res != -1){ + pair_test = (mc_pair_t)xbt_dynar_get_as(visited_pairs, (min+res)-1, mc_pair_t); + if(pair_test->other_num == -1) + pair->other_num = pair_test->num; + else + pair->other_num = pair_test->other_num; + if(dot_output == NULL) + XBT_DEBUG("Pair %d already visited ! (equal to pair %d)", pair->num, pair_test->num); + else + XBT_DEBUG("Pair %d already visited ! (equal to pair %d (pair %d in dot_output))", pair->num, pair_test->num, pair->other_num); + xbt_dynar_remove_at(visited_pairs, (min + res) - 1, NULL); + xbt_dynar_insert_at(visited_pairs, (min+res) - 1, &pair); + pair_test->visited_removed = 1; + if(pair_test->stack_removed && pair_test->visited_removed){ + if((pair_test->automaton_state->type == 1) || (pair_test->automaton_state->type == 2)){ + if(pair_test->acceptance_removed){ + MC_pair_delete(pair_test); + } + }else{ + MC_pair_delete(pair_test); + } + } + if(!raw_mem_set) + MC_UNSET_RAW_MEM; + return pair->other_num; + }*/ + cursor = min; + while(cursor <= max){ + pair_test = (mc_visited_pair_t)xbt_dynar_get_as(visited_pairs, cursor, mc_visited_pair_t); + //if(pair_test->acceptance_pair == 0){ /* Acceptance pair have been already checked before */ + if(xbt_automaton_state_compare(pair_test->automaton_state, new_pair->automaton_state) == 0){ + if(xbt_automaton_propositional_symbols_compare_value(pair_test->atomic_propositions, new_pair->atomic_propositions) == 0){ + if(snapshot_compare(pair_test, new_pair) == 0){ + if(pair_test->other_num == -1) + new_pair->other_num = pair_test->num; + else + new_pair->other_num = pair_test->other_num; + if(dot_output == NULL) + XBT_DEBUG("Pair %d already visited ! (equal to pair %d)", new_pair->num, pair_test->num); + else + XBT_DEBUG("Pair %d already visited ! (equal to pair %d (pair %d in dot_output))", new_pair->num, pair_test->num, new_pair->other_num); + xbt_dynar_remove_at(visited_pairs, cursor, NULL); + xbt_dynar_insert_at(visited_pairs, cursor, &new_pair); + pair_test->visited_removed = 1; + if(pair_test->acceptance_pair){ + if(pair_test->acceptance_removed == 1) + MC_visited_pair_delete(pair_test); + }else{ + MC_visited_pair_delete(pair_test); + } + if(!raw_mem_set) + MC_UNSET_RAW_MEM; + return new_pair->other_num; + } + } + //} + } + cursor++; + } + xbt_dynar_insert_at(visited_pairs, min, &new_pair); + }else{ + pair_test = (mc_visited_pair_t)xbt_dynar_get_as(visited_pairs, index, mc_visited_pair_t); + if(pair_test->nb_processes < new_pair->nb_processes){ + xbt_dynar_insert_at(visited_pairs, index+1, &new_pair); + }else{ + if(pair_test->heap_bytes_used < new_pair->heap_bytes_used) + xbt_dynar_insert_at(visited_pairs, index + 1, &new_pair); + else + xbt_dynar_insert_at(visited_pairs, index, &new_pair); + } + } + + if(xbt_dynar_length(visited_pairs) > _sg_mc_visited){ + int min2 = mc_stats->expanded_pairs; + unsigned int cursor2 = 0; + unsigned int index2 = 0; + xbt_dynar_foreach(visited_pairs, cursor2, pair_test){ + if(pair_test->num < min2){ + index2 = cursor2; + min2 = pair_test->num; + } + } + xbt_dynar_remove_at(visited_pairs, index2, &pair_test); + pair_test->visited_removed = 1; + if(pair_test->acceptance_pair){ + if(pair_test->acceptance_removed) + MC_visited_pair_delete(pair_test); + }else{ + MC_visited_pair_delete(pair_test); + } + } + + } + if(!raw_mem_set) + MC_UNSET_RAW_MEM; + + return -1; +} -int MC_automaton_evaluate_label(xbt_exp_label_t l){ +static int MC_automaton_evaluate_label(xbt_automaton_exp_label_t l, xbt_dynar_t atomic_propositions_values){ switch(l->type){ case 0 : { - int left_res = MC_automaton_evaluate_label(l->u.or_and.left_exp); - int right_res = MC_automaton_evaluate_label(l->u.or_and.right_exp); + int left_res = MC_automaton_evaluate_label(l->u.or_and.left_exp, atomic_propositions_values); + int right_res = MC_automaton_evaluate_label(l->u.or_and.right_exp, atomic_propositions_values); return (left_res || right_res); } case 1 : { - int left_res = MC_automaton_evaluate_label(l->u.or_and.left_exp); - int right_res = MC_automaton_evaluate_label(l->u.or_and.right_exp); + int left_res = MC_automaton_evaluate_label(l->u.or_and.left_exp, atomic_propositions_values); + int right_res = MC_automaton_evaluate_label(l->u.or_and.right_exp, atomic_propositions_values); return (left_res && right_res); } case 2 : { - int res = MC_automaton_evaluate_label(l->u.exp_not); + int res = MC_automaton_evaluate_label(l->u.exp_not, atomic_propositions_values); return (!res); } case 3 : { unsigned int cursor = 0; - xbt_propositional_symbol_t p = NULL; - int_f_void_t f; + xbt_automaton_propositional_symbol_t p = NULL; xbt_dynar_foreach(_mc_property_automaton->propositional_symbols, cursor, p){ - if(strcmp(p->pred, l->u.predicat) == 0){ - f = (int_f_void_t)p->function; - return (*f)(); - } + if(strcmp(p->pred, l->u.predicat) == 0) + return (int)xbt_dynar_get_as(atomic_propositions_values, cursor, int); } return -1; } @@ -212,115 +359,73 @@ int MC_automaton_evaluate_label(xbt_exp_label_t l){ } -/********************* Double-DFS stateless *******************/ +/********* DDFS Algorithm *********/ -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 pair_stateless_free_voidp(void *p){ - pair_stateless_free((mc_pair_stateless_t) * (void **) p); -} - -mc_pair_stateless_t new_pair_stateless(mc_state_t sg, xbt_state_t st, int r){ - mc_pair_stateless_t p = NULL; - p = xbt_new0(s_mc_pair_stateless_t, 1); - p->automaton_state = st; - p->graph_state = sg; - p->requests = r; - mc_stats_pair->expanded_pairs++; - return p; -} - -void pair_reached_free(mc_pair_reached_t pair){ - if(pair){ - pair->automaton_state = NULL; - xbt_dynar_free(&(pair->prop_ato)); - MC_free_snapshot(pair->system_state); - xbt_free(pair); - } -} - -void pair_reached_free_voidp(void *p){ - pair_reached_free((mc_pair_reached_t) * (void **) p); -} void MC_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; + mc_pair_t initial_pair = NULL; smx_process_t process; - MC_wait_for_requests(); - MC_SET_RAW_MEM; + MC_ignore_heap(simix_global->process_to_run->data, 0); + MC_ignore_heap(simix_global->process_that_ran->data, 0); - 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); - } - } + MC_SET_RAW_MEM; - reached_pairs = xbt_dynar_new(sizeof(mc_pair_reached_t), pair_reached_free_voidp); - successors = xbt_dynar_new(sizeof(mc_pair_stateless_t), NULL); + acceptance_pairs = xbt_dynar_new(sizeof(mc_visited_pair_t), NULL); + visited_pairs = xbt_dynar_new(sizeof(mc_visited_pair_t), NULL); + successors = xbt_dynar_new(sizeof(mc_pair_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(0); + initial_state_liveness->prev_pair = 0; MC_UNSET_RAW_MEM; unsigned int cursor = 0; - xbt_state_t state; + xbt_automaton_state_t automaton_state; - xbt_dynar_foreach(_mc_property_automaton->states, cursor, state){ - if(state->type == -1){ + xbt_dynar_foreach(_mc_property_automaton->states, cursor, automaton_state){ + if(automaton_state->type == -1){ /* Initial automaton state */ MC_SET_RAW_MEM; - mc_initial_pair = new_pair_stateless(initial_graph_state, state, MC_state_interleave_size(initial_graph_state)); - xbt_fifo_unshift(mc_stack_liveness, mc_initial_pair); - MC_UNSET_RAW_MEM; - - if(cursor != 0){ - MC_restore_snapshot(initial_state_liveness->initial_snapshot); - MC_UNSET_RAW_MEM; + + initial_pair = MC_pair_new(); + initial_pair->automaton_state = automaton_state; + initial_pair->graph_state = MC_state_new(); + initial_pair->atomic_propositions = get_atomic_propositions_values(); + + /* Get enabled process and insert it in the interleave set of the graph_state */ + xbt_swag_foreach(process, simix_global->process_list){ + if(MC_process_is_enabled(process)){ + MC_state_interleave_process(initial_pair->graph_state, process); + } } - MC_ddfs(0); + initial_pair->requests = MC_state_interleave_size(initial_pair->graph_state); + initial_pair->search_cycle = 0; - }else{ - if(state->type == 2){ + xbt_fifo_unshift(mc_stack_liveness, initial_pair); + + MC_UNSET_RAW_MEM; - 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_ddfs(); + + if(cursor != 0){ + 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_UNSET_RAW_MEM; - } - - MC_ddfs(1); - - } + } } } - if(raw_mem_set) + if(initial_state_liveness->raw_mem_set) MC_SET_RAW_MEM; else MC_UNSET_RAW_MEM; @@ -329,335 +434,240 @@ void MC_ddfs_init(void){ } -void MC_ddfs(int search_cycle){ - - raw_mem_set = (mmalloc_get_current_heap() == raw_heap); +void MC_ddfs(){ smx_process_t process; - mc_pair_stateless_t current_pair = NULL; + mc_pair_t current_pair = NULL; if(xbt_fifo_size(mc_stack_liveness) == 0) return; - /* Get current pair */ - current_pair = (mc_pair_stateless_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack_liveness)); + current_pair = (mc_pair_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack_liveness)); /* Update current state in buchi automaton */ _mc_property_automaton->current_state = current_pair->automaton_state; + XBT_DEBUG("********************* ( Depth = %d, search_cycle = %d, interleave size %d, pair_num %d)", xbt_fifo_size(mc_stack_liveness), current_pair->search_cycle, MC_state_interleave_size(current_pair->graph_state), current_pair->num); - XBT_DEBUG("********************* ( Depth = %d, search_cycle = %d )", xbt_fifo_size(mc_stack_liveness), search_cycle); - - mc_stats_pair->visited_pairs++; - - //sleep(1); + mc_stats->visited_pairs++; int value; - mc_state_t next_graph_state = NULL; smx_simcall_t req = NULL; char *req_str; - xbt_transition_t transition_succ; + xbt_automaton_transition_t transition_succ; unsigned int cursor = 0; int res; + int visited_num; - 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; + mc_pair_t next_pair = NULL; + xbt_dynar_t prop_values = NULL; + mc_visited_pair_t reached_pair = NULL; + int counter_example_depth = 0; - 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){ - while((req = MC_state_get_request(current_pair->graph_state, &value)) != NULL){ - - /* Debug information */ - - req_str = MC_request_to_string(req, value); - XBT_DEBUG("Execute: %s", req_str); - xbt_free(req_str); - - MC_state_set_executed_request(current_pair->graph_state, req, value); - - /* Answer the request */ - SIMIX_simcall_pre(req, value); + if(current_pair->search_cycle){ - /* Wait for requests (schedules processes) */ - MC_wait_for_requests(); + if((current_pair->automaton_state->type == 1) || (current_pair->automaton_state->type == 2)){ + if((reached_pair = is_reached_acceptance_pair(current_pair->num, current_pair->automaton_state, current_pair->atomic_propositions)) == NULL){ - MC_SET_RAW_MEM; - - /* Create the new expanded graph_state */ - next_graph_state = MC_state_pair_new(); + counter_example_depth = xbt_fifo_size(mc_stack_liveness); + 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_INFO("Counter-example depth : %d", counter_example_depth); + xbt_abort(); - /* 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); + if((visited_num = is_visited_pair(reached_pair, current_pair->num, current_pair->automaton_state, current_pair->atomic_propositions)) != -1){ + MC_SET_RAW_MEM; + if(dot_output != NULL) + fprintf(dot_output, "\"%d\" -> \"%d\" [%s];\n", initial_state_liveness->prev_pair, visited_num, initial_state_liveness->prev_req); MC_UNSET_RAW_MEM; + + }else{ + while((req = MC_state_get_request(current_pair->graph_state, &value)) != NULL){ - 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; + MC_SET_RAW_MEM; + if(dot_output != NULL){ + if(initial_state_liveness->prev_pair != 0 && initial_state_liveness->prev_pair != current_pair->num){ + fprintf(dot_output, "\"%d\" -> \"%d\" [%s];\n", initial_state_liveness->prev_pair, current_pair->num, initial_state_liveness->prev_req); + xbt_free(initial_state_liveness->prev_req); + } + initial_state_liveness->prev_pair = current_pair->num; } + 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; + /* 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_SET_RAW_MEM; + if(dot_output != NULL){ + initial_state_liveness->prev_req = MC_request_get_dot_output(req, value); + if(current_pair->search_cycle) + fprintf(dot_output, "%d [shape=doublecircle];\n", current_pair->num); + } + MC_UNSET_RAW_MEM; + + MC_state_set_executed_request(current_pair->graph_state, req, value); + mc_stats->executed_transitions++; - cursor = 0; - - xbt_dynar_foreach(successors, cursor, pair_succ){ + /* Answer the request */ + SIMIX_simcall_pre(req, value); + + /* Wait for requests (schedules processes) */ + MC_wait_for_requests(); - if(search_cycle == 1){ + MC_SET_RAW_MEM; + prop_values = get_atomic_propositions_values(); + MC_UNSET_RAW_MEM; - if((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2)){ - - if(reached(pair_succ->automaton_state)){ - - XBT_INFO("Next pair (depth = %d, %u interleave) already reached !", xbt_fifo_size(mc_stack_liveness) + 1, MC_state_interleave_size(pair_succ->graph_state)); + int new_pair = 0; + + /* Evaluate enabled transition according to atomic propositions values */ + cursor= 0; + xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){ - 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(); + res = MC_automaton_evaluate_label(transition_succ->label, prop_values); - }else{ + if(res == 1){ // enabled transition in automaton - XBT_DEBUG("Next pair (depth =%d) -> Acceptance pair (%s)", xbt_fifo_size(mc_stack_liveness) + 1, pair_succ->automaton_state->id); + if(new_pair) + MC_replay_liveness(mc_stack_liveness, 1); - XBT_DEBUG("Reached pairs : %lu", xbt_dynar_length(reached_pairs)); + MC_SET_RAW_MEM; - MC_SET_RAW_MEM; - xbt_fifo_unshift(mc_stack_liveness, pair_succ); - MC_UNSET_RAW_MEM; - - MC_ddfs(search_cycle); + next_pair = MC_pair_new(); + next_pair->graph_state = MC_state_new(); + next_pair->automaton_state = transition_succ->dst; + next_pair->atomic_propositions = get_atomic_propositions_values(); + /* 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_pair->graph_state, process); + } } - }else{ - - MC_SET_RAW_MEM; - xbt_fifo_unshift(mc_stack_liveness, pair_succ); - MC_UNSET_RAW_MEM; + next_pair->requests = MC_state_interleave_size(next_pair->graph_state); - MC_ddfs(search_cycle); - - } + if(next_pair->automaton_state->type == 1 || next_pair->automaton_state->type == 2 || current_pair->search_cycle) + next_pair->search_cycle = 1; + + xbt_fifo_unshift(mc_stack_liveness, next_pair); - }else{ - - if(((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2))){ + if(mc_stats->expanded_pairs%1000000 == 0) + XBT_INFO("Expanded pairs : %lu", mc_stats->expanded_pairs); - 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); + MC_UNSET_RAW_MEM; - search_cycle = 1; + new_pair = 1; - XBT_DEBUG("Reached pairs : %lu", xbt_dynar_length(reached_pairs)); + MC_ddfs(); } - 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_DEBUG("Backtracking to depth %d", xbt_fifo_size(mc_stack_liveness)); - MC_replay_liveness(mc_stack_liveness, 0); - } - } - - - }else{ + /* Then, evaluate true transitions (always true, whatever atomic propositions values) */ + cursor = 0; + xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){ - 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); + res = MC_automaton_evaluate_label(transition_succ->label, prop_values); - 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); - exit(0); - - }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)); + if(res == 2){ // true transition in automaton + if(new_pair) + MC_replay_liveness(mc_stack_liveness, 1); + MC_SET_RAW_MEM; - xbt_fifo_unshift(mc_stack_liveness, pair_succ); - MC_UNSET_RAW_MEM; - - MC_ddfs(search_cycle); + + next_pair = MC_pair_new(); + next_pair->graph_state = MC_state_new(); + next_pair->automaton_state = transition_succ->dst; + next_pair->atomic_propositions = get_atomic_propositions_values(); + + /* 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_pair->graph_state, process); + } + } - } + next_pair->requests = MC_state_interleave_size(next_pair->graph_state); + + if(next_pair->automaton_state->type == 1 || next_pair->automaton_state->type == 2 || current_pair->search_cycle) + next_pair->search_cycle = 1; - }else{ + xbt_fifo_unshift(mc_stack_liveness, next_pair); - MC_SET_RAW_MEM; - xbt_fifo_unshift(mc_stack_liveness, pair_succ); - MC_UNSET_RAW_MEM; - - MC_ddfs(search_cycle); + if(mc_stats->expanded_pairs%1000000 == 0) + XBT_INFO("Expanded pairs : %lu", mc_stats->expanded_pairs); - } - + MC_UNSET_RAW_MEM; - }else{ - - if(((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2))){ + new_pair = 1; - set_pair_reached(pair_succ->automaton_state); - - search_cycle = 1; + MC_ddfs(); - 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); - + 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); + } + } - /* 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(MC_state_interleave_size(current_pair->graph_state) > 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. /!\\ "); + if(_sg_mc_max_depth == 1000) + 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 ){ - XBT_DEBUG("Pair (depth = %d) shifted in stack, maximum depth reached", xbt_fifo_size(mc_stack_liveness) ); + if(xbt_fifo_size(mc_stack_liveness) == _sg_mc_max_depth ){ + XBT_DEBUG("Pair %d (depth = %d) shifted in stack, maximum depth reached", current_pair->num, xbt_fifo_size(mc_stack_liveness) ); }else{ - XBT_DEBUG("Pair (depth = %d) shifted in stack", xbt_fifo_size(mc_stack_liveness) ); + XBT_DEBUG("Pair %d (depth = %d) shifted in stack", current_pair->num, xbt_fifo_size(mc_stack_liveness) ); } MC_SET_RAW_MEM; - remove_pair = xbt_fifo_shift(mc_stack_liveness); - xbt_fifo_remove(mc_stack_liveness, remove_pair); - remove_pair = NULL; - if((current_pair->automaton_state->type == 1) || (current_pair->automaton_state->type == 2)){ - remove_pair_reached = xbt_dynar_pop_as(reached_pairs, mc_pair_reached_t); - pair_reached_free(remove_pair_reached); - remove_pair_reached = NULL; + xbt_dynar_free(&prop_values); + current_pair = xbt_fifo_shift(mc_stack_liveness); + if(xbt_fifo_size(mc_stack_liveness) != _sg_mc_max_depth -1 && current_pair->requests > 0 && current_pair->search_cycle){ + remove_acceptance_pair(current_pair->num); } - MC_UNSET_RAW_MEM; + MC_pair_delete(current_pair); - if(raw_mem_set) - MC_SET_RAW_MEM; + MC_UNSET_RAW_MEM; }