X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/0ddad0a8665a95e6f16b6f765efca789459a818d..acbb008dc3d00fd042fa186fba318ac338ba7c38:/src/mc/mc_liveness.c diff --git a/src/mc/mc_liveness.c b/src/mc/mc_liveness.c index 32e8b3b308..66f17c521c 100644 --- a/src/mc/mc_liveness.c +++ b/src/mc/mc_liveness.c @@ -1,1037 +1,833 @@ -#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 +#include 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; - - int i; - for(i=0 ; i< s1->num_reg ; i++){ +xbt_dynar_t acceptance_pairs; +xbt_dynar_t visited_pairs; +xbt_dynar_t successors; +xbt_parmap_t parmap; - 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 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); - if(memcmp(s1->regions[i]->data, s2->regions[i]->data, s1->regions[i]->size) != 0) - return 1; - + 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_automaton_t a){ +static int get_search_interval(xbt_dynar_t all_pairs, mc_pair_t pair, int *min, int *max){ - if(xbt_dynar_is_empty(reached_pairs)){ - return 0; - }else{ - MC_SET_RAW_MEM; + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + + MC_SET_RAW_MEM; + + int cursor = 0, previous_cursor, next_cursor; + mc_pair_t pair_test; + int start = 0; + int end = xbt_dynar_length(all_pairs) - 1; - 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 */ - 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){ - //XBT_DEBUG("Same automaton state"); - if(xbt_dynar_compare(pair_test->prop_ato, pair->prop_ato, propositional_symbols_compare_value) == 0){ - //XBT_DEBUG("Same values of propositional symbols"); - if(snapshot_compare(pair_test->system_state, pair->system_state) == 0){ - //XBT_DEBUG("Same system state"); - MC_UNSET_RAW_MEM; - return 1; - } - } + while(start <= end){ + cursor = (start + end) / 2; + pair_test = (mc_pair_t)xbt_dynar_get_as(all_pairs, cursor, mc_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_pair_t)xbt_dynar_get_as(all_pairs, previous_cursor, mc_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_pair_t)xbt_dynar_get_as(all_pairs, next_cursor, mc_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; } - } + } + } + if(!raw_mem_set) MC_UNSET_RAW_MEM; - return 0; - - } + + return cursor; } -int set_pair_reached(xbt_automaton_t a){ +static int is_reached_acceptance_pair(mc_pair_t pair){ - if(reached(a) == 0){ + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); - MC_SET_RAW_MEM; + MC_SET_RAW_MEM; + + if(xbt_dynar_is_empty(acceptance_pairs)){ - 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 */ - 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); + if(pair->graph_state->system_state == NULL){ + pair->graph_state->system_state = MC_take_snapshot(); + pair->heap_bytes_used = mmalloc_get_bytes_used(std_heap); } - - xbt_dynar_push(reached_pairs, &pair); - - MC_UNSET_RAW_MEM; - - return 1; + xbt_dynar_push(acceptance_pairs, &pair); - } + if(!raw_mem_set) + MC_UNSET_RAW_MEM; - return 0; -} + return -1; -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); -} + }else{ + if(pair->graph_state->system_state == NULL){ + pair->graph_state->system_state = MC_take_snapshot(); + pair->heap_bytes_used = mmalloc_get_bytes_used(std_heap); + } -int MC_automaton_evaluate_label(xbt_automaton_t a, xbt_exp_label_t l){ - - switch(l->type){ - case 0 : { - int left_res = MC_automaton_evaluate_label(a, l->u.or_and.left_exp); - int right_res = MC_automaton_evaluate_label(a, l->u.or_and.right_exp); - return (left_res || right_res); - break; - } - case 1 : { - int left_res = MC_automaton_evaluate_label(a, l->u.or_and.left_exp); - int right_res = MC_automaton_evaluate_label(a, l->u.or_and.right_exp); - return (left_res && right_res); - break; - } - case 2 : { - int res = MC_automaton_evaluate_label(a, l->u.exp_not); - return (!res); - break; - } - case 3 : { - unsigned int cursor = 0; - xbt_propositional_symbol_t p = NULL; - xbt_dynar_foreach(a->propositional_symbols, cursor, p){ - if(strcmp(p->pred, l->u.predicat) == 0){ - int (*f)() = p->function; - return (*f)(); + int min = -1, max = -1, index; + int res; + mc_pair_t pair_test; + + 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; + } + xbt_dynar_insert_at(acceptance_pairs, min, &pair); + }else{ + pair_test = (mc_pair_t)xbt_dynar_get_as(acceptance_pairs, index, mc_pair_t); + if(pair_test->nb_processes < pair->nb_processes){ + xbt_dynar_insert_at(acceptance_pairs, index+1, &pair); + }else{ + 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); } } + + if(!raw_mem_set) + MC_UNSET_RAW_MEM; + return -1; - break; - } - case 4 : { - return 2; - break; - } - default : - return -1; + } + } +static void set_acceptance_pair_reached(mc_pair_t pair){ -/******************************* DFS with visited state *******************************/ - -xbt_dynar_t visited_pairs; - -void set_pair_visited(mc_pair_t pair, int sc){ + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); MC_SET_RAW_MEM; - mc_visited_pair_t p = NULL; - p = xbt_new0(s_mc_visited_pair_t, 1); - p->pair = pair; - p->search_cycle = sc; - char hash[41]; - xbt_sha((const char *)&p, hash); - xbt_dynar_push(visited_pairs, &hash); - MC_UNSET_RAW_MEM; - -} -int visited(mc_pair_t pair, int sc){ + if(xbt_dynar_is_empty(acceptance_pairs)){ - MC_SET_RAW_MEM; + if(pair->graph_state->system_state == NULL){ + pair->graph_state->system_state = MC_take_snapshot(); + pair->heap_bytes_used = mmalloc_get_bytes_used(std_heap); + } + xbt_dynar_push(acceptance_pairs, &pair); - mc_visited_pair_t p = NULL; - p = xbt_new0(s_mc_visited_pair_t, 1); - p->pair = pair; - p->search_cycle = sc; - char hash[41]; - xbt_sha((const char *)&p, hash); - if(xbt_dynar_member(visited_pairs, hash)){ - MC_UNSET_RAW_MEM; - return 1; }else{ - MC_UNSET_RAW_MEM; - return 0; - } -} - - -void MC_vddfs_stateful_init(xbt_automaton_t a){ - XBT_DEBUG("**************************************************"); - XBT_DEBUG("Double-DFS stateful with 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; - - init_snapshot = xbt_new0(s_mc_snapshot_t, 1); - - 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); + if(pair->graph_state->system_state == NULL){ + pair->graph_state->system_state = MC_take_snapshot(); + pair->heap_bytes_used = mmalloc_get_bytes_used(std_heap); } - } - - visited_pairs = xbt_dynar_new(sizeof(char *), NULL); - reached_pairs = xbt_dynar_new(sizeof(mc_pair_reached_t), NULL); - - 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_vddfs_stateful(a, 0, 0); - }else{ - MC_restore_snapshot(init_snapshot); - MC_UNSET_RAW_MEM; - MC_vddfs_stateful(a, 0, 0); + size_t current_bytes_used = pair->heap_bytes_used; + int current_nb_processes = pair->nb_processes; + + int cursor = 0; + int start = 0; + int end = xbt_dynar_length(acceptance_pairs) - 1; + + mc_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_pair_t)xbt_dynar_get_as(acceptance_pairs, cursor, mc_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; } - }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_vddfs_stateful(a, 1, 0); - }else{ - MC_restore_snapshot(init_snapshot); - MC_UNSET_RAW_MEM; - MC_vddfs_stateful(a, 1, 0); - } - } } - } -} + if(bytes_used_test < current_bytes_used) + xbt_dynar_insert_at(acceptance_pairs, cursor + 1, &pair); + else + xbt_dynar_insert_at(acceptance_pairs, cursor, &pair); + } -void MC_vddfs_stateful(xbt_automaton_t a, int search_cycle, int restore){ - - smx_process_t process = NULL; + if(!raw_mem_set) + MC_UNSET_RAW_MEM; + +} +static void remove_acceptance_pair(mc_pair_t pair){ - if(xbt_fifo_size(mc_stack_liveness_stateful) == 0) - return; - - if(restore == 1){ - MC_restore_snapshot(((mc_pair_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack_liveness_stateful)))->system_state); - MC_UNSET_RAW_MEM; - } + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + MC_SET_RAW_MEM; - /* Get current state */ - mc_pair_t current_pair = (mc_pair_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack_liveness_stateful)); + unsigned int cursor = 0; + mc_pair_t pair_test; + int pair_found = 0; - if(restore == 1){ - xbt_swag_foreach(process, simix_global->process_list){ - if(MC_process_is_enabled(process)){ - MC_state_interleave_process(current_pair->graph_state, process); - } + xbt_dynar_foreach(acceptance_pairs, cursor, pair_test){ + if(pair_test->num == pair->num){ + pair_found = 1; + break; } } - 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)); + if(pair_found) + xbt_dynar_remove_at(acceptance_pairs, cursor, NULL); - a->current_state = current_pair->automaton_state; + pair->acceptance_removed = 1; - mc_stats_pair->visited_pairs++; + if(pair->stack_removed && pair->acceptance_removed){ + if(_sg_mc_visited == 0){ + MC_pair_delete(pair); + }else if(pair->visited_removed){ + MC_pair_delete(pair); + } + } - int value; - mc_state_t next_graph_state = NULL; - smx_req_t req = NULL; - char *req_str; + if(!raw_mem_set) + MC_UNSET_RAW_MEM; +} - - xbt_transition_t transition_succ; - unsigned int cursor; - int res; +static int is_visited_pair(mc_pair_t pair){ - xbt_dynar_t successors = NULL; + if(_sg_mc_visited == 0) + return -1; - mc_pair_t next_pair = NULL; - mc_snapshot_t next_snapshot = NULL; - mc_snapshot_t current_snapshot = NULL; - mc_pair_t pair_succ = NULL; + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); MC_SET_RAW_MEM; - successors = xbt_dynar_new(sizeof(mc_pair_t), NULL); - MC_UNSET_RAW_MEM; - - - while((req = MC_state_get_request(current_pair->graph_state, &value)) != NULL){ - - MC_SET_RAW_MEM; - current_snapshot = xbt_new0(s_mc_snapshot_t, 1); - MC_take_snapshot(current_snapshot); - MC_UNSET_RAW_MEM; - - - /* Debug information */ - if(XBT_LOG_ISENABLED(mc_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); + if(xbt_dynar_is_empty(visited_pairs)){ - /* Answer the request */ - SIMIX_request_pre(req, value); + if(pair->graph_state->system_state == NULL) + pair->graph_state->system_state = MC_take_snapshot(); + xbt_dynar_push(visited_pairs, &pair); - /* Wait for requests (schedules processes) */ - MC_wait_for_requests(); + if(!raw_mem_set) + MC_UNSET_RAW_MEM; + return -1; - /* Create the new expanded graph_state */ - MC_SET_RAW_MEM; + }else{ - 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); + if(pair->graph_state->system_state == NULL) + pair->graph_state->system_state = MC_take_snapshot(); + + int min = -1, max = -1, index; + int res; + mc_pair_t pair_test; + + index = get_search_interval(visited_pairs, 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; + } + xbt_dynar_insert_at(visited_pairs, min, &pair); + }else{ + pair_test = (mc_pair_t)xbt_dynar_get_as(visited_pairs, index, mc_pair_t); + if(pair_test->nb_processes < pair->nb_processes){ + xbt_dynar_insert_at(visited_pairs, index+1, &pair); + }else{ + if(pair_test->heap_bytes_used < pair->heap_bytes_used) + xbt_dynar_insert_at(visited_pairs, index + 1, &pair); + else + xbt_dynar_insert_at(visited_pairs, index, &pair); } - } - - next_snapshot = xbt_new0(s_mc_snapshot_t, 1); - 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){ - 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){ - 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(xbt_dynar_length(visited_pairs) > _sg_mc_visited){ + int min = mc_stats->expanded_states; + unsigned int cursor2 = 0; + unsigned int index2 = 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, index2, &pair_test); + pair_test->visited_removed = 1; + if(pair_test->stack_removed && pair_test->acceptance_removed && pair_test->visited_removed) + MC_pair_delete(pair_test); + } - - - 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); + if(!raw_mem_set) MC_UNSET_RAW_MEM; - - } - + + return -1; - //XBT_DEBUG("Successors length %lu", xbt_dynar_length(successors)); + } +} - cursor = 0; +static int MC_automaton_evaluate_label(xbt_automaton_exp_label_t l, xbt_dynar_t atomic_propositions_values){ - xbt_dynar_foreach(successors, cursor, pair_succ){ - - /*XBT_DEBUG("Search reached pair %p : graph=%p, automaton=%p", pair_succ, pair_succ->graph_state, pair_succ->automaton_state); - char hash[41]; - XBT_DEBUG("Const char pair %s", (const char *)&pair_succ); - xbt_sha((const char *)&pair_succ, hash); - XBT_DEBUG("Hash pair_succ %s", hash);*/ - - 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); - } - - XBT_DEBUG("Search visited pair %p : graph %p, automaton %p", pair_succ, pair_succ->graph_state, pair_succ->automaton_state); - - if(visited(pair_succ, search_cycle) == 0){ - - //mc_stats_pair->executed_transitions++; - set_pair_visited(pair_succ, search_cycle); - - MC_SET_RAW_MEM; - xbt_fifo_unshift(mc_stack_liveness_stateful, pair_succ); - MC_UNSET_RAW_MEM; - - MC_vddfs_stateful(a, search_cycle, 0); - - //XBT_DEBUG("Pair (graph=%p, automaton=%p) expanded", pair_succ->graph_state, pair_succ->automaton_state); - - 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); - int res = set_pair_reached(a); - - MC_SET_RAW_MEM; - xbt_fifo_unshift(mc_stack_liveness_stateful, pair_succ); - MC_UNSET_RAW_MEM; - - MC_vddfs_stateful(a, 1, 1); - - if(res){ - MC_SET_RAW_MEM; - xbt_dynar_pop(reached_pairs, NULL); - MC_UNSET_RAW_MEM; - } - - } - - }else{ - - XBT_DEBUG("Pair already visited !"); - } - - } - - - if(MC_state_interleave_size(current_pair->graph_state) > 0){ - MC_restore_snapshot(current_snapshot); - MC_UNSET_RAW_MEM; - + switch(l->type){ + case 0 : { + 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, 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, atomic_propositions_values); + return (!res); + } + case 3 : { + unsigned int cursor = 0; + 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) + return (int)xbt_dynar_get_as(atomic_propositions_values, cursor, int); } + return -1; + } + case 4 : { + return 2; + } + default : + return -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; - - - } +/********* DDFS Algorithm *********/ -/********************* Double-DFS stateful without visited state *******************/ +void MC_ddfs_init(void){ -void MC_ddfs_stateful_init(xbt_automaton_t a){ + 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 initial_pair = 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(); - 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_pair_t), NULL); + visited_pairs = xbt_dynar_new(sizeof(mc_pair_t), NULL); + successors = xbt_dynar_new(sizeof(mc_pair_t), NULL); - MC_take_snapshot(init_snapshot); + initial_state_liveness->snapshot = MC_take_snapshot(); + initial_state_liveness->prev_pair = 0; 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){ /* Initial automaton state */ + 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; - - 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; - - xbt_dynar_t successors = NULL; - - mc_pair_t next_pair = NULL; - mc_snapshot_t next_snapshot = NULL; - mc_snapshot_t current_snapshot = NULL; - //sleep(1); - MC_SET_RAW_MEM; - successors = xbt_dynar_new(sizeof(mc_pair_t), NULL); - MC_UNSET_RAW_MEM; - - while((req = MC_state_get_request(current_pair->graph_state, &value)) != NULL){ - - MC_SET_RAW_MEM; - current_snapshot = xbt_new0(s_mc_snapshot_t, 1); - MC_take_snapshot(current_snapshot); - MC_UNSET_RAW_MEM; - - - /* Debug information */ - if(XBT_LOG_ISENABLED(mc_liveness, xbt_log_priority_debug)){ - req_str = MC_request_to_string(req, value); - XBT_DEBUG("Execute: %s", req_str); - xbt_free(req_str); - } + 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(); - 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); + /* 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); + } } - } - - next_snapshot = xbt_new0(s_mc_snapshot_t, 1); - MC_take_snapshot(next_snapshot); - xbt_dynar_reset(successors); + initial_pair->requests = MC_state_interleave_size(initial_pair->graph_state); + initial_pair->search_cycle = 0; - MC_UNSET_RAW_MEM; + xbt_fifo_unshift(mc_stack_liveness, initial_pair); - - 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; + MC_UNSET_RAW_MEM; + + MC_ddfs(); + + if(cursor != 0){ + MC_restore_snapshot(initial_state_liveness->snapshot); + MC_UNSET_RAW_MEM; } + - } - - cursor = 0; - xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){ + }else if(automaton_state->type == 2){ /* Acceptance automaton state */ + + MC_SET_RAW_MEM; - 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; + 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); + } } - - } - - - 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); + initial_pair->requests = MC_state_interleave_size(initial_pair->graph_state); + initial_pair->search_cycle = 1; + + xbt_fifo_unshift(mc_stack_liveness, initial_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; + set_acceptance_pair_reached(initial_pair); + + MC_ddfs(); - 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; - } + if(cursor != 0){ + MC_restore_snapshot(initial_state_liveness->snapshot); + 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; } - } + if(initial_state_liveness->raw_mem_set) + MC_SET_RAW_MEM; + else + MC_UNSET_RAW_MEM; - 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; } +void MC_ddfs(){ -/********************* 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); -} - -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; -} + smx_process_t process; + mc_pair_t current_pair = NULL; + if(xbt_fifo_size(mc_stack_liveness) == 0) + return; + /* Get current pair */ + current_pair = (mc_pair_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack_liveness)); -void MC_ddfs_stateless_init(xbt_automaton_t a){ + /* Update current state in buchi automaton */ + _mc_property_automaton->current_state = current_pair->automaton_state; - XBT_DEBUG("**************************************************"); - XBT_DEBUG("Double-DFS stateless init"); - XBT_DEBUG("**************************************************"); + XBT_DEBUG("********************* ( Depth = %d, search_cycle = %d, interleave size %d)", xbt_fifo_size(mc_stack_liveness), current_pair->search_cycle, MC_state_interleave_size(current_pair->graph_state)); - mc_pair_stateless_t mc_initial_pair = NULL; - mc_state_t initial_graph_state = NULL; - smx_process_t process; - - MC_wait_for_requests(); + mc_stats->visited_pairs++; - 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); + int value; + smx_simcall_t req = NULL; + char *req_str; - initial_snapshot = xbt_new0(s_mc_snapshot_t, 1); - MC_take_snapshot(initial_snapshot); + xbt_automaton_transition_t transition_succ; + unsigned int cursor = 0; + int res; + int reached_num, visited_num; - MC_UNSET_RAW_MEM; + mc_pair_t next_pair = NULL; + xbt_dynar_t prop_values = NULL; + + if(xbt_fifo_size(mc_stack_liveness) < _sg_mc_max_depth){ + + if(current_pair->requests > 0){ + + if(current_pair->search_cycle){ + + if((current_pair->automaton_state->type == 1) || (current_pair->automaton_state->type == 2)){ + + if((reached_num = is_reached_acceptance_pair(current_pair)) != -1){ + + XBT_INFO("Pair %d already reached (equal to pair %d) !", current_pair->num, reached_num); + + MC_SET_RAW_MEM; + xbt_fifo_shift(mc_stack_liveness); + if(dot_output != NULL) + fprintf(dot_output, "\"%d\" -> \"%d\" [%s];\n", initial_state_liveness->prev_pair, reached_num, initial_state_liveness->prev_req); + MC_UNSET_RAW_MEM; + + 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(); + + } + } + } - unsigned int cursor = 0; - xbt_state_t state; + if((visited_num = is_visited_pair(current_pair)) != -1){ - xbt_dynar_foreach(a->states, cursor, state){ - if(state->type == -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; + - 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; + }else{ + + while((req = MC_state_get_request(current_pair->graph_state, &value)) != NULL){ + + 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; + + /* 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++; + + /* Answer the request */ + SIMIX_simcall_pre(req, value); + + /* Wait for requests (schedules processes) */ + MC_wait_for_requests(); + + MC_SET_RAW_MEM; + prop_values = get_atomic_propositions_values(); + MC_UNSET_RAW_MEM; + + /* Evaluate enabled transition according to atomic propositions values */ + cursor= 0; + xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){ + + res = MC_automaton_evaluate_label(transition_succ->label, prop_values); + + if(res == 1){ // enabled transition in automaton + + MC_SET_RAW_MEM; + + 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; + + xbt_fifo_unshift(mc_stack_liveness, next_pair); + + if(mc_stats->expanded_pairs%1000000 == 0) + XBT_INFO("Expanded pairs : %lu", mc_stats->expanded_pairs); + + MC_UNSET_RAW_MEM; + + MC_ddfs(); + + } + + } + + /* Then, evaluate true transitions (always true, whatever atomic propositions values) */ + cursor = 0; + xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){ - 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); + res = MC_automaton_evaluate_label(transition_succ->label, prop_values); + + if(res == 2){ // true transition in automaton + + MC_SET_RAW_MEM; + + 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; + + xbt_fifo_unshift(mc_stack_liveness, next_pair); + + if(mc_stats->expanded_pairs%1000000 == 0) + XBT_INFO("Expanded pairs : %lu", mc_stats->expanded_pairs); + + MC_UNSET_RAW_MEM; + + MC_ddfs(); + + } + + } + + 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{ - if(state->type == 2){ + + mc_stats->executed_transitions++; - 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); - } + XBT_DEBUG("No request to execute in this state, search evolution in Büchi Automaton."); + + if(current_pair->search_cycle){ + + if((current_pair->automaton_state->type == 1) || (current_pair->automaton_state->type == 2)){ + + if((reached_num = is_reached_acceptance_pair(current_pair)) != -1){ + + XBT_INFO("Pair %d already reached (equal to pair %d) !", current_pair->num, reached_num); + + MC_SET_RAW_MEM; + xbt_fifo_shift(mc_stack_liveness); + MC_UNSET_RAW_MEM; + + 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(); + + } + } } - } - } -} + if((visited_num = is_visited_pair(current_pair)) != -1){ + XBT_DEBUG("Pair %d already visited ! (equal to pair %d)", current_pair->num, visited_num); + + }else{ + + MC_SET_RAW_MEM; + prop_values = get_atomic_propositions_values(); + MC_UNSET_RAW_MEM; -void MC_ddfs_stateless(xbt_automaton_t a, int search_cycle, int replay){ + /* Evaluate enabled transition according to atomic propositions values */ + cursor= 0; + xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){ - smx_process_t process; - mc_pair_stateless_t current_pair = NULL; + res = MC_automaton_evaluate_label(transition_succ->label, prop_values); - if(xbt_fifo_size(mc_stack_liveness_stateless) == 0) - return; + if(res == 1){ // enabled transition in automaton - 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); - } - } - } + MC_SET_RAW_MEM; - /* Get current state */ - current_pair = (mc_pair_stateless_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack_liveness_stateless)); + 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(); + 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; + + xbt_fifo_unshift(mc_stack_liveness, next_pair); - /* Update current state in 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)); + if(mc_stats->expanded_pairs%1000 == 0) + XBT_INFO("Expanded pairs : %lu", mc_stats->expanded_pairs); - - mc_stats_pair->visited_pairs++; + if(dot_output != NULL) + fprintf(dot_output, "\"%d\" -> \"%d\" [%s];\n", current_pair->num, next_pair->num, ""); - int value; - mc_state_t next_graph_state = NULL; - smx_req_t req = NULL; - char *req_str; + MC_UNSET_RAW_MEM; - xbt_transition_t transition_succ; - unsigned int cursor = 0; - int res; + MC_ddfs(); - 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; + } - 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); - } + /* Then, evaluate true transitions (always true, whatever atomic propositions values) */ + cursor = 0; + xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){ + + res = MC_automaton_evaluate_label(transition_succ->label, prop_values); + + if(res == 2){ // true transition in automaton - //sleep(1); + MC_SET_RAW_MEM; + + 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(); + 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; - MC_state_set_executed_request(current_pair->graph_state, req, value); - - /* Answer the request */ - SIMIX_request_pre(req, value); + xbt_fifo_unshift(mc_stack_liveness, next_pair); - /* Wait for requests (schedules processes) */ - MC_wait_for_requests(); + if(mc_stats->expanded_pairs%1000 == 0) + XBT_INFO("Expanded pairs : %lu", mc_stats->expanded_pairs); + + if(dot_output != NULL) + fprintf(dot_output, "\"%d\" -> \"%d\" [%s];\n", current_pair->num, next_pair->num, ""); + MC_UNSET_RAW_MEM; - MC_SET_RAW_MEM; + MC_ddfs(); - /* 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); + } } } - xbt_dynar_reset(successors); - - MC_UNSET_RAW_MEM; + }else{ - - 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_stateless(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){ // 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(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; - } - - cursor = 0; - - 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; - - MC_ddfs_stateless(a, search_cycle, 0); - - - if((search_cycle == 0) && ((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2))){ - - 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); - - 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; - } - } + 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(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); - } - + 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 %d (depth = %d) shifted in stack", current_pair->num, 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); + xbt_dynar_free(&prop_values); + current_pair = xbt_fifo_shift(mc_stack_liveness); + current_pair->stack_removed = 1; + if(current_pair->search_cycle){ + remove_acceptance_pair(current_pair); + }else{ + if(_sg_mc_visited == 0) + MC_pair_delete(current_pair); + else if(current_pair->visited_removed) + MC_pair_delete(current_pair); + } + MC_UNSET_RAW_MEM; } -