X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/37baaf70ee95c42a6f4b80913db243c199230fb9..e0300cbd373040c590de77e64cc6c6e5fc3c28bb:/src/mc/mc_liveness.c diff --git a/src/mc/mc_liveness.c b/src/mc/mc_liveness.c index 9ea615fa67..4d7c048ec0 100644 --- a/src/mc/mc_liveness.c +++ b/src/mc/mc_liveness.c @@ -1,1339 +1,398 @@ -/* Copyright (c) 2008-2012 Da SimGrid Team. All rights reserved. */ +/* Copyright (c) 2011-2014. 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. */ -#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 reached_pairs; -xbt_dynar_t reached_pairs_hash; -xbt_dynar_t visited_pairs; -xbt_dynar_t visited_pairs_hash; -xbt_dynar_t successors; - -xbt_dynar_t hosts_table; - - -/* fast implementation of djb2 algorithm */ -unsigned int hash_region(char *str, int str_len){ - - int c; - register unsigned int hash = 5381; - - while (str_len--) { - c = *str++; - hash = ((hash << 5) + hash) + c; /* hash * 33 + c */ - } +#include +#include - return hash; - -} - -const char* get_memory_map_addr(void *addr){ +#include "mc_request.h" +#include "mc_liveness.h" +#include "mc_private.h" +#include "mc_record.h" +#include "mc_smx.h" - FILE *fp; /* File pointer to process's proc maps file */ - char *line = NULL; /* Temporal storage for each line that is readed */ - ssize_t read; /* Number of bytes readed */ - size_t n = 0; /* Amount of bytes to read by getline */ +XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_liveness, mc, + "Logging specific to algorithms for liveness properties verification"); - fp = fopen("/proc/self/maps", "r"); - - if(fp == NULL) - perror("fopen failed"); +/********* Global variables *********/ - if(addr == NULL){ - fclose(fp); - return "nil"; - } +xbt_dynar_t acceptance_pairs; +xbt_parmap_t parmap; - xbt_dynar_t lfields = NULL; - xbt_dynar_t start_end = NULL; - void *start_addr; - void *end_addr; - - while ((read = getline(&line, &n, fp)) != -1) { - - xbt_str_trim(line, NULL); - xbt_str_strip_spaces(line); - lfields = xbt_str_split(line,NULL); - - start_end = xbt_str_split(xbt_dynar_get_as(lfields, 0, char*), "-"); - start_addr = (void *) strtoul(xbt_dynar_get_as(start_end, 0, char*), NULL, 16); - end_addr = (void *) strtoul(xbt_dynar_get_as(start_end, 1, char*), NULL, 16); - - if((addr > start_addr) && ( addr < end_addr)){ - free(line); - fclose(fp); - if(start_addr == std_heap) - return "std_heap"; - if(start_addr == raw_heap) - return "raw_heap"; - if(xbt_dynar_length(lfields) == 6) - return xbt_dynar_get_as(lfields, xbt_dynar_length(lfields) - 1, char*); - else - return "Anonymous"; - } +/********* Static functions *********/ +static xbt_dynar_t get_atomic_propositions_values() +{ + 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) { + int res = xbt_automaton_propositional_symbol_evaluate(ps); + xbt_dynar_push_as(values, int, res); } - free(line); - fclose(fp); - return "Unknown area"; - + return values; } -int data_program_region_compare(void *d1, void *d2, size_t size){ - int distance = 0; - int pointer_align; - int i; - - for(i=0; inum, pair->automaton_state, pair->atomic_propositions, pair->graph_state); + new_pair->acceptance_pair = 1; + + if (xbt_dynar_is_empty(acceptance_pairs)) { + + xbt_dynar_push(acceptance_pairs, &new_pair); + + } else { + + int min = -1, max = -1, index; + //int res; + mc_visited_pair_t pair_test; + int cursor; + + index = get_search_interval(acceptance_pairs, new_pair, &min, &max); + + if (min != -1 && max != -1) { // Acceptance pair with same number of processes and same heap bytes used exists + + // Parallell implementation + /*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_SET_STD_HEAP; + return ((mc_pair_t)xbt_dynar_get_as(acceptance_pairs, (min+res)-1, mc_pair_t))->num; + } */ + + cursor = min; + if(pair->search_cycle == 1){ + 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, 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) { + XBT_INFO("Pair %d already reached (equal to pair %d) !", new_pair->num, pair_test->num); + xbt_fifo_shift(mc_stack); + if (dot_output != NULL) + fprintf(dot_output, "\"%d\" -> \"%d\" [%s];\n", initial_global_state->prev_pair, pair_test->num, initial_global_state->prev_req); + mmalloc_set_current_heap(heap); + return NULL; + } + } + } + cursor++; + } + } + xbt_dynar_insert_at(acceptance_pairs, min, &new_pair); + } else { + pair_test = (mc_visited_pair_t) xbt_dynar_get_as(acceptance_pairs, index, mc_visited_pair_t); + if (pair_test->nb_processes < new_pair->nb_processes) { + xbt_dynar_insert_at(acceptance_pairs, index + 1, &new_pair); + } else { + if (pair_test->heap_bytes_used < new_pair->heap_bytes_used) + xbt_dynar_insert_at(acceptance_pairs, index + 1, &new_pair); + else + xbt_dynar_insert_at(acceptance_pairs, index, &new_pair); + } } - } - - fprintf(stderr, "Hamming distance between data program regions : %d\n", distance); - - return distance; -} -int data_libsimgrid_region_compare(void *d1, void *d2, size_t size){ - int distance = 0; - int pointer_align; - int i; - - for(i=0; inum_reg != s2->num_reg){ - XBT_INFO("Different num_reg (s1 = %u, s2 = %u)", s1->num_reg, s2->num_reg); - return 1; - } - - int i; - int errors = 0; - - for(i=0 ; i< s1->num_reg ; i++){ +static void remove_acceptance_pair(int pair_num) +{ + xbt_mheap_t heap = mmalloc_set_current_heap(mc_heap); - if(s1->regions[i]->type != s2->regions[i]->type){ - XBT_INFO("Different type of region"); - errors++; - } + unsigned int cursor = 0; + mc_visited_pair_t pair_test = NULL; + int pair_found = 0; - switch(s1->regions[i]->type){ - case 0: - if(s1->regions[i]->size != s2->regions[i]->size){ - XBT_INFO("Different size of heap (s1 = %zu, s2 = %zu)", s1->regions[i]->size, s2->regions[i]->size); - errors++; - } - if(s1->regions[i]->start_addr != s2->regions[i]->start_addr){ - XBT_INFO("Different start addr of heap (s1 = %p, s2 = %p)", s1->regions[i]->start_addr, s2->regions[i]->start_addr); - errors++; - } - if(mmalloc_compare_heap(s1->regions[i]->data, s2->regions[i]->data, s_heap, r_heap)){ - XBT_INFO("Different heap (mmalloc_compare)"); - errors++; - } - break; - case 1 : - if(s1->regions[i]->size != s2->regions[i]->size){ - XBT_INFO("Different size of libsimgrid (s1 = %zu, s2 = %zu)", s1->regions[i]->size, s2->regions[i]->size); - errors++; - } - if(s1->regions[i]->start_addr != s2->regions[i]->start_addr){ - XBT_INFO("Different start addr of libsimgrid (s1 = %p, s2 = %p)", s1->regions[i]->start_addr, s2->regions[i]->start_addr); - errors++; - } - if(data_libsimgrid_region_compare(s1->regions[i]->data, s2->regions[i]->data, s1->regions[i]->size) != 0){ - XBT_INFO("Different memcmp for data in libsimgrid"); - errors++; - } - break; - case 2 : - if(s1->regions[i]->size != s2->regions[i]->size){ - XBT_INFO("Different size of data program (s1 = %zu, s2 = %zu)", s1->regions[i]->size, s2->regions[i]->size); - errors++; - } - if(s1->regions[i]->start_addr != s2->regions[i]->start_addr){ - XBT_INFO("Different start addr of data program (s1 = %p, s2 = %p)", s1->regions[i]->start_addr, s2->regions[i]->start_addr); - errors++; - } - if(data_program_region_compare(s1->regions[i]->data, s2->regions[i]->data, s1->regions[i]->size) != 0){ - XBT_INFO("Different memcmp for data in program"); - errors++; - } - break; - default: + xbt_dynar_foreach(acceptance_pairs, cursor, pair_test) { + if (pair_test->num == pair_num) { + pair_found = 1; break; } } - return (errors > 0); - -} - -int reached(xbt_state_t st){ - + if(pair_found == 1) { + xbt_dynar_remove_at(acceptance_pairs, cursor, &pair_test); - if(xbt_dynar_is_empty(reached_pairs)){ + pair_test->acceptance_removed = 1; - return 0; + if (_sg_mc_visited == 0 || pair_test->visited_removed == 1) + MC_visited_pair_delete(pair_test); - }else{ - - MC_SET_RAW_MEM; - - mc_snapshot_t sn = xbt_new0(s_mc_snapshot_t, 1); - MC_take_snapshot_liveness(sn); - - xbt_dynar_t prop_ato = xbt_dynar_new(sizeof(int), NULL); - int res; - int_f_void_t f; - - /* Get values of propositional symbols */ - unsigned int cursor = 0; - xbt_propositional_symbol_t ps = NULL; - xbt_dynar_foreach(automaton->propositional_symbols, cursor, ps){ - f = (int_f_void_t)ps->function; - res = (*f)(); - xbt_dynar_push_as(prop_ato, int, res); - } - - cursor = 0; - mc_pair_reached_t pair_test = NULL; - - //xbt_dict_t current_rdv_points = SIMIX_get_rdv_points(); - - xbt_dynar_foreach(reached_pairs, cursor, pair_test){ - XBT_INFO("Pair reached #%u", cursor+1); - if(automaton_state_compare(pair_test->automaton_state, st) == 0){ - if(propositional_symbols_compare_value(pair_test->prop_ato, prop_ato) == 0){ - //XBT_INFO("Rdv points size %d - %d", xbt_dict_length(pair_test->rdv_points), xbt_dict_length(current_rdv_points)); - //if(xbt_dict_length(pair_test->rdv_points) == xbt_dict_length(current_rdv_points)){ - //if(rdv_points_compare(pair_test->rdv_points, current_rdv_points) == 0){ - if(snapshot_compare(pair_test->system_state, sn, std_heap, raw_heap) == 0){ - MC_free_snapshot(sn); - xbt_dynar_reset(prop_ato); - xbt_free(prop_ato); - MC_UNSET_RAW_MEM; - return 1; - } - /* } - }else{ - XBT_INFO("Different size of rdv points (%d - %d)",xbt_dict_length(pair_test->rdv_points), xbt_dict_length(current_rdv_points) ); - }*/ - }else{ - XBT_INFO("Different values of propositional symbols"); - } - }else{ - XBT_INFO("Different automaton state"); - } - } - - MC_free_snapshot(sn); - xbt_dynar_reset(prop_ato); - xbt_free(prop_ato); - MC_UNSET_RAW_MEM; - return 0; - } -} -int rdv_points_compare(xbt_dict_t d1, xbt_dict_t d2){ /* d1 = pair_test, d2 = current_pair */ - - xbt_dict_cursor_t cursor_dict = NULL; - char *key; - char *data; - smx_rdv_t rdv1, rdv2; - xbt_fifo_item_t item1, item2; - smx_action_t action1, action2; - xbt_fifo_item_t item_req1, item_req2; - smx_simcall_t req1, req2; - int i=0; - int j=0; - - xbt_dict_foreach(d1, cursor_dict, key, data){ - rdv1 = (smx_rdv_t)data; - rdv2 = xbt_dict_get_or_null(d2, rdv1->name); - if(rdv2 == NULL){ - XBT_INFO("Rdv point unknown"); - return 1; - }else{ - if(xbt_fifo_size(rdv1->comm_fifo) != xbt_fifo_size(rdv2->comm_fifo)){ - XBT_INFO("Different total of actions in mailbox \"%s\" (%d - %d)", rdv1->name, xbt_fifo_size(rdv1->comm_fifo),xbt_fifo_size(rdv2->comm_fifo) ); - return 1; - }else{ - - XBT_INFO("Total of actions in mailbox \"%s\" : %d", rdv1->name, xbt_fifo_size(rdv1->comm_fifo)); - - item1 = xbt_fifo_get_first_item(rdv1->comm_fifo); - item2 = xbt_fifo_get_first_item(rdv2->comm_fifo); - - while(icomm_fifo)){ - action1 = (smx_action_t) xbt_fifo_get_item_content(item1); - action2 = (smx_action_t) xbt_fifo_get_item_content(item2); - - if(action1->type != action2->type){ - XBT_INFO("Different type of action"); - return 1; - } - - if(action1->state != action2->state){ - XBT_INFO("Different state of action"); - return 1; - } - - if(xbt_fifo_size(action1->simcalls) != xbt_fifo_size(action2->simcalls)){ - XBT_INFO("Different size of simcall list (%d - %d", xbt_fifo_size(action1->simcalls), xbt_fifo_size(action2->simcalls)); - return 1; - }else{ - - item_req1 = xbt_fifo_get_first_item(action1->simcalls); - item_req2 = xbt_fifo_get_first_item(action2->simcalls); - - while(jsimcalls)){ - - req1 = (smx_simcall_t) xbt_fifo_get_item_content(item_req1); - req2 = (smx_simcall_t) xbt_fifo_get_item_content(item_req2); - - if(req1->call != req2->call){ - XBT_INFO("Different simcall call in simcalls of action (%d - %d)", (int)req1->call, (int)req2->call); - return 1; - } - if(req1->issuer->pid != req2->issuer->pid){ - XBT_INFO("Different simcall issuer in simcalls of action (%lu- %lu)", req1->issuer->pid, req2->issuer->pid); - return 1; - } - - item_req1 = xbt_fifo_get_next_item(item_req1); - item_req2 = xbt_fifo_get_next_item(item_req2); - j++; - - } - } - - switch(action1->type){ - case 0: /* execution */ - case 1: /* parallel execution */ - if(strcmp(action1->execution.host->name, action2->execution.host->name) != 0) - return 1; - break; - case 2: /* comm */ - if(action1->comm.type != action2->comm.type) - return 1; - //XBT_INFO("Type of comm : %d", action1->comm.type); - - switch(action1->comm.type){ - case 0: /* SEND */ - if(action1->comm.src_proc->pid != action2->comm.src_proc->pid) - return 1; - if(strcmp(action1->comm.src_proc->smx_host->name, action2->comm.src_proc->smx_host->name) != 0) - return 1; - break; - case 1: /* RECEIVE */ - if(action1->comm.dst_proc->pid != action2->comm.dst_proc->pid) - return 1; - if(strcmp(action1->comm.dst_proc->smx_host->name, action2->comm.dst_proc->smx_host->name) != 0) - return 1; - break; - case 2: /* READY */ - if(action1->comm.src_proc->pid != action2->comm.src_proc->pid) - return 1; - if(strcmp(action1->comm.src_proc->smx_host->name, action2->comm.src_proc->smx_host->name) != 0) - return 1; - if(action1->comm.dst_proc->pid != action2->comm.dst_proc->pid) - return 1; - if(strcmp(action1->comm.dst_proc->smx_host->name, action2->comm.dst_proc->smx_host->name) != 0) - return 1; - break; - case 3: /* DONE */ - if(action1->comm.src_proc->pid != action2->comm.src_proc->pid) - return 1; - if(strcmp(action1->comm.src_proc->smx_host->name, action2->comm.src_proc->smx_host->name) != 0) - return 1; - if(action1->comm.dst_proc->pid != action2->comm.dst_proc->pid) - return 1; - if(strcmp(action1->comm.dst_proc->smx_host->name, action2->comm.dst_proc->smx_host->name) != 0) - return 1; - break; - - } /* end of switch on type of comm */ - - if(action1->comm.refcount != action2->comm.refcount) - return 1; - if(action1->comm.detached != action2->comm.detached) - return 1; - if(action1->comm.rate != action2->comm.rate) - return 1; - if(action1->comm.task_size != action2->comm.task_size) - return 1; - if(action1->comm.src_buff != action2->comm.src_buff) - return 1; - if(action1->comm.dst_buff != action2->comm.dst_buff) - return 1; - if(action1->comm.src_data != action2->comm.src_data) - return 1; - if(action1->comm.dst_data != action2->comm.dst_data) - return 1; - - break; - case 3: /* sleep */ - if(strcmp(action1->sleep.host->name, action2->sleep.host->name) != 0) - return 1; - break; - case 4: /* synchro */ - - break; - default: - break; - } - - item1 = xbt_fifo_get_next_item(item1); - item2 = xbt_fifo_get_next_item(item2); - i++; - } - } - } - } - - return 0; - + mmalloc_set_current_heap(heap); } -void set_pair_reached(xbt_state_t st){ - - MC_SET_RAW_MEM; - - mc_pair_reached_t pair = NULL; - pair = xbt_new0(s_mc_pair_reached_t, 1); - pair->automaton_state = st; - pair->prop_ato = xbt_dynar_new(sizeof(int), NULL); - pair->system_state = xbt_new0(s_mc_snapshot_t, 1); - //pair->rdv_points = xbt_dict_new(); - MC_take_snapshot_liveness(pair->system_state); - - /* Get values of propositional symbols */ - unsigned int cursor = 0; - xbt_propositional_symbol_t ps = NULL; - int res; - int_f_void_t f; - - xbt_dynar_foreach(automaton->propositional_symbols, cursor, ps){ - f = (int_f_void_t)ps->function; - res = (*f)(); - xbt_dynar_push_as(pair->prop_ato, int, res); - } +static int MC_automaton_evaluate_label(xbt_automaton_exp_label_t l, + xbt_dynar_t atomic_propositions_values) +{ - /*xbt_dict_t rdv_points = SIMIX_get_rdv_points(); - - xbt_dict_cursor_t cursor_dict = NULL; - char *key; - char *data; - xbt_fifo_item_t item; - smx_action_t action; - - xbt_dict_foreach(rdv_points, cursor_dict, key, data){ - smx_rdv_t new_rdv = xbt_new0(s_smx_rvpoint_t, 1); - new_rdv->name = strdup(((smx_rdv_t)data)->name); - new_rdv->comm_fifo = xbt_fifo_new(); - xbt_fifo_foreach(((smx_rdv_t)data)->comm_fifo, item, action, smx_action_t) { - smx_action_t a = xbt_new0(s_smx_action_t, 1); - memcpy(a, action, sizeof(s_smx_action_t)); - xbt_fifo_push(new_rdv->comm_fifo, a); - XBT_INFO("New action (type = %d, state = %d) in mailbox \"%s\"", action->type, action->state, key); - if(action->type==2) - XBT_INFO("Type of communication : %d, Ref count = %d", action->comm.type, action->comm.refcount); + 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); } - //new_rdv->comm_fifo = xbt_fifo_copy(((smx_rdv_t)data)->comm_fifo); - xbt_dict_set(pair->rdv_points, new_rdv->name, new_rdv, NULL); - }*/ - - xbt_dynar_push(reached_pairs, &pair); - - MC_UNSET_RAW_MEM; - -} - - -int reached_hash(xbt_state_t st){ - - - if(xbt_dynar_is_empty(reached_pairs_hash)){ - - return 0; - - }else{ - - MC_SET_RAW_MEM; - - mc_snapshot_t sn = xbt_new0(s_mc_snapshot_t, 1); - MC_take_snapshot_liveness(sn); - - int j; - unsigned int hash_regions[sn->num_reg]; - for(j=0; jnum_reg; j++){ - hash_regions[j] = hash_region(sn->regions[j]->data, sn->regions[j]->size); + 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); } - - - /* Get values of propositional symbols */ - xbt_dynar_t prop_ato = xbt_dynar_new(sizeof(int), NULL); - unsigned int cursor = 0; - xbt_propositional_symbol_t ps = NULL; - int res; - int_f_void_t f; - - xbt_dynar_foreach(automaton->propositional_symbols, cursor, ps){ - f = (int_f_void_t)ps->function; - res = (*f)(); - xbt_dynar_push_as(prop_ato, int, res); + case 2:{ + int res = MC_automaton_evaluate_label(l->u.exp_not, atomic_propositions_values); + return (!res); } - - mc_pair_reached_hash_t pair_test = NULL; - - int region_diff = 0; - - cursor = 0; - - xbt_dynar_foreach(reached_pairs_hash, cursor, pair_test){ - - if(automaton_state_compare(pair_test->automaton_state, st) == 0){ - if(propositional_symbols_compare_value(pair_test->prop_ato, prop_ato) == 0){ - for(j=0 ; j< sn->num_reg ; j++){ - if(hash_regions[j] != pair_test->hash_regions[j]){ - region_diff++; - } - } - if(region_diff == 0){ - MC_free_snapshot(sn); - xbt_dynar_reset(prop_ato); - xbt_free(prop_ato); - MC_UNSET_RAW_MEM; - return 1; - }else{ - XBT_INFO("Different snapshot"); - } - }else{ - XBT_INFO("Different values of propositional symbols"); - } - }else{ - XBT_INFO("Different automaton state"); + 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(xbt_automaton_propositional_symbol_get_name(p), l->u.predicat) == 0) + return (int) xbt_dynar_get_as(atomic_propositions_values, cursor, int); } - - region_diff = 0; + return -1; } - - MC_free_snapshot(sn); - xbt_dynar_reset(prop_ato); - xbt_free(prop_ato); - MC_UNSET_RAW_MEM; - return 0; - - } -} - -void set_pair_reached_hash(xbt_state_t st){ - - MC_SET_RAW_MEM; - - mc_snapshot_t sn = xbt_new0(s_mc_snapshot_t, 1); - MC_take_snapshot_liveness(sn); - - mc_pair_reached_hash_t pair = NULL; - pair = xbt_new0(s_mc_pair_reached_hash_t, 1); - pair->automaton_state = st; - pair->prop_ato = xbt_dynar_new(sizeof(int), NULL); - pair->hash_regions = malloc(sizeof(unsigned int) * sn->num_reg); - - int i; - - for(i=0 ; i< sn->num_reg ; i++){ - pair->hash_regions[i] = hash_region(sn->regions[i]->data, sn->regions[i]->size); - } - - /* Get values of propositional symbols */ - unsigned int cursor = 0; - xbt_propositional_symbol_t ps = NULL; - int res; - int_f_void_t f; - - xbt_dynar_foreach(automaton->propositional_symbols, cursor, ps){ - f = (int_f_void_t)ps->function; - res = (*f)(); - xbt_dynar_push_as(pair->prop_ato, int, res); - } - - xbt_dynar_push(reached_pairs_hash, &pair); - - MC_free_snapshot(sn); - - MC_UNSET_RAW_MEM; - -} - - -int visited(xbt_state_t st, int sc){ - - - if(xbt_dynar_is_empty(visited_pairs)){ - - return 0; - - }else{ - - MC_SET_RAW_MEM; - - mc_snapshot_t sn = xbt_new0(s_mc_snapshot_t, 1); - MC_take_snapshot_liveness(sn); - - xbt_dynar_t prop_ato = xbt_dynar_new(sizeof(int), NULL); - - /* Get values of propositional symbols */ - unsigned int cursor = 0; - xbt_propositional_symbol_t ps = NULL; - int res; - int_f_void_t f; - - xbt_dynar_foreach(automaton->propositional_symbols, cursor, ps){ - f = (int_f_void_t)ps->function; - res = (*f)(); - xbt_dynar_push_as(prop_ato, int, res); - } - - cursor = 0; - mc_pair_visited_t pair_test = NULL; - - xbt_dynar_foreach(visited_pairs, cursor, pair_test){ - if(pair_test->search_cycle == sc) { - if(automaton_state_compare(pair_test->automaton_state, st) == 0){ - if(propositional_symbols_compare_value(pair_test->prop_ato, prop_ato) == 0){ - if(snapshot_compare(pair_test->system_state, sn, std_heap, raw_heap) == 0){ - - MC_free_snapshot(sn); - xbt_dynar_reset(prop_ato); - xbt_free(prop_ato); - MC_UNSET_RAW_MEM; - - return 1; - - }else{ - XBT_INFO("Different snapshot"); - } - }else{ - XBT_INFO("Different values of propositional symbols"); - } - }else{ - XBT_INFO("Different automaton state"); - } - }else{ - XBT_INFO("Different value of search_cycle"); - } + case 4:{ + return 2; } - - - MC_free_snapshot(sn); - xbt_dynar_reset(prop_ato); - xbt_free(prop_ato); - MC_UNSET_RAW_MEM; - return 0; - + default: + return -1; } } +void MC_pre_modelcheck_liveness(void) { -int visited_hash(xbt_state_t st, int sc){ - - - if(xbt_dynar_is_empty(visited_pairs_hash)){ - - return 0; - - }else{ - - MC_SET_RAW_MEM; + initial_global_state->raw_mem_set = (mmalloc_get_current_heap() == mc_heap); - mc_snapshot_t sn = xbt_new0(s_mc_snapshot_t, 1); - MC_take_snapshot_liveness(sn); + mc_pair_t initial_pair = NULL; + smx_process_t process; - int j; - unsigned int hash_regions[sn->num_reg]; - for(j=0; jnum_reg; j++){ - hash_regions[j] = hash_region(sn->regions[j]->data, sn->regions[j]->size); - } + MC_wait_for_requests(); - - /* Get values of propositional symbols */ - xbt_dynar_t prop_ato = xbt_dynar_new(sizeof(int), NULL); - unsigned int cursor = 0; - xbt_propositional_symbol_t ps = NULL; - int res; - int_f_void_t f; - - xbt_dynar_foreach(automaton->propositional_symbols, cursor, ps){ - f = (int_f_void_t)ps->function; - res = (*f)(); - xbt_dynar_push_as(prop_ato, int, res); - } + MC_SET_MC_HEAP; - mc_pair_visited_hash_t pair_test = NULL; + acceptance_pairs = xbt_dynar_new(sizeof(mc_visited_pair_t), NULL); + if(_sg_mc_visited > 0) + visited_pairs = xbt_dynar_new(sizeof(mc_visited_pair_t), NULL); - int region_diff = 0; - cursor = 0; + initial_global_state->snapshot = MC_take_snapshot(0); + initial_global_state->prev_pair = 0; - xbt_dynar_foreach(visited_pairs_hash, cursor, pair_test){ + unsigned int cursor = 0; + xbt_automaton_state_t automaton_state; - if(pair_test->search_cycle == sc) { - if(automaton_state_compare(pair_test->automaton_state, st) == 0){ - if(propositional_symbols_compare_value(pair_test->prop_ato, prop_ato) == 0){ - for(j=0 ; j< sn->num_reg ; j++){ - if(hash_regions[j] != pair_test->hash_regions[j]){ - region_diff++; - } - } - if(region_diff == 0){ - MC_free_snapshot(sn); - xbt_dynar_reset(prop_ato); - xbt_free(prop_ato); - MC_UNSET_RAW_MEM; - return 1; - }else{ - //XBT_INFO("Different snapshot"); - } - }else{ - //XBT_INFO("Different values of propositional symbols"); - } - }else{ - //XBT_INFO("Different automaton state"); - } - }else{ - //XBT_INFO("Different value of search_cycle"); - } - - region_diff = 0; + xbt_dynar_foreach(_mc_property_automaton->states, cursor, automaton_state) { + if (automaton_state->type == -1) { /* Initial automaton state */ + + 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(); + initial_pair->depth = 1; + + /* Get enabled processes and insert them in the interleave set of the graph_state */ + MC_EACH_SIMIX_PROCESS(process, + if (MC_process_is_enabled(process)) { + MC_state_interleave_process(initial_pair->graph_state, process); + } + ); + + initial_pair->requests = MC_state_interleave_size(initial_pair->graph_state); + initial_pair->search_cycle = 0; + + xbt_fifo_unshift(mc_stack, initial_pair); } - - MC_free_snapshot(sn); - xbt_dynar_reset(prop_ato); - xbt_free(prop_ato); - MC_UNSET_RAW_MEM; - return 0; - - } -} - -void set_pair_visited_hash(xbt_state_t st, int sc){ - - MC_SET_RAW_MEM; - - mc_snapshot_t sn = xbt_new0(s_mc_snapshot_t, 1); - MC_take_snapshot_liveness(sn); - - mc_pair_visited_hash_t pair = NULL; - pair = xbt_new0(s_mc_pair_visited_hash_t, 1); - pair->automaton_state = st; - pair->prop_ato = xbt_dynar_new(sizeof(int), NULL); - pair->search_cycle = sc; - pair->hash_regions = malloc(sizeof(unsigned int) * sn->num_reg); - - int i; - - for(i=0 ; i< sn->num_reg ; i++){ - pair->hash_regions[i] = hash_region(sn->regions[i]->data, sn->regions[i]->size); - } - - /* Get values of propositional symbols */ - unsigned int cursor = 0; - xbt_propositional_symbol_t ps = NULL; - int res; - int_f_void_t f; - - xbt_dynar_foreach(automaton->propositional_symbols, cursor, ps){ - f = (int_f_void_t)ps->function; - res = (*f)(); - xbt_dynar_push_as(pair->prop_ato, int, res); } - - xbt_dynar_push(visited_pairs_hash, &pair); - MC_free_snapshot(sn); + MC_SET_STD_HEAP; - MC_UNSET_RAW_MEM; - -} - -void set_pair_visited(xbt_state_t st, int sc){ + MC_modelcheck_liveness(); - - MC_SET_RAW_MEM; - - mc_pair_visited_t pair = NULL; - pair = xbt_new0(s_mc_pair_visited_t, 1); - pair->automaton_state = st; - pair->prop_ato = xbt_dynar_new(sizeof(int), NULL); - pair->search_cycle = sc; - pair->system_state = xbt_new0(s_mc_snapshot_t, 1); - MC_take_snapshot_liveness(pair->system_state); - - - /* Get values of propositional symbols */ - unsigned int cursor = 0; - xbt_propositional_symbol_t ps = NULL; - int res; - int_f_void_t f; - - xbt_dynar_foreach(automaton->propositional_symbols, cursor, ps){ - f = (int_f_void_t)ps->function; - res = (*f)(); - xbt_dynar_push_as(pair->prop_ato, int, res); - } - - xbt_dynar_push(visited_pairs, &pair); - - MC_UNSET_RAW_MEM; - - -} - -void MC_pair_delete(mc_pair_t pair){ - xbt_free(pair->graph_state->proc_status); - xbt_free(pair->graph_state); - xbt_free(pair); + if (initial_global_state->raw_mem_set) + MC_SET_MC_HEAP; } - - -int MC_automaton_evaluate_label(xbt_exp_label_t l){ +void MC_modelcheck_liveness() +{ + smx_process_t process = NULL; + mc_pair_t current_pair = NULL; + int value, res, visited_num = -1; + smx_simcall_t req = NULL; + xbt_automaton_transition_t transition_succ = NULL; + int cursor = 0; + mc_pair_t next_pair = NULL; + xbt_dynar_t prop_values = NULL; + mc_visited_pair_t reached_pair = NULL; - 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); - 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); - return (left_res && right_res); - } - case 2 : { - int res = MC_automaton_evaluate_label(l->u.exp_not); - return (!res); - } - case 3 : { - unsigned int cursor = 0; - xbt_propositional_symbol_t p = NULL; - int_f_void_t f; - xbt_dynar_foreach(automaton->propositional_symbols, cursor, p){ - if(strcmp(p->pred, l->u.predicat) == 0){ - f = (int_f_void_t)p->function; - return (*f)(); + while(xbt_fifo_size(mc_stack) > 0){ + + /* Get current pair */ + current_pair = (mc_pair_t) xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack)); + + /* 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)", + current_pair->depth, current_pair->search_cycle, + MC_state_interleave_size(current_pair->graph_state), current_pair->num); + + if (current_pair->requests > 0) { + + if (current_pair->automaton_state->type == 1 && current_pair->exploration_started == 0) { + /* If new acceptance pair, return new pair */ + if ((reached_pair = is_reached_acceptance_pair(current_pair)) == NULL) { + int counter_example_depth = current_pair->depth; + XBT_INFO("*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*"); + XBT_INFO("| ACCEPTANCE CYCLE |"); + XBT_INFO("*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*"); + XBT_INFO("Counter-example that violates formula :"); + MC_show_stack_liveness(mc_stack); + MC_dump_stack_liveness(mc_stack); + MC_print_statistics(mc_stats); + XBT_INFO("Counter-example depth : %d", counter_example_depth); + xbt_abort(); + } } - } - return -1; - } - case 4 : { - return 2; - } - default : - return -1; - } -} - - -/********************* Double-DFS stateless *******************/ - -void MC_pair_stateless_delete(mc_pair_stateless_t pair){ - xbt_free(pair->graph_state->proc_status); - xbt_free(pair->graph_state); - xbt_free(pair); -} - -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 MC_ddfs_init(void){ - - XBT_INFO("**************************************************"); - XBT_INFO("Double-DFS init"); - XBT_INFO("**************************************************"); - - mc_pair_stateless_t mc_initial_pair = NULL; - mc_state_t initial_graph_state = NULL; - smx_process_t process; - - MC_wait_for_requests(); - - 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); - //reached_pairs_hash = xbt_dynar_new(sizeof(mc_pair_reached_hash_t), NULL); - //visited_pairs = xbt_dynar_new(sizeof(mc_pair_visited_t), NULL); - visited_pairs_hash = xbt_dynar_new(sizeof(mc_pair_visited_hash_t), NULL); - successors = xbt_dynar_new(sizeof(mc_pair_stateless_t), NULL); - - /* Save the initial state */ - initial_snapshot_liveness = xbt_new0(s_mc_snapshot_t, 1); - MC_take_snapshot_liveness(initial_snapshot_liveness); - - MC_UNSET_RAW_MEM; - - unsigned int cursor = 0; - xbt_state_t state; - - xbt_dynar_foreach(automaton->states, cursor, state){ - if(state->type == -1){ - - MC_SET_RAW_MEM; - mc_initial_pair = new_pair_stateless(initial_graph_state, state, MC_state_interleave_size(initial_graph_state)); - xbt_fifo_unshift(mc_stack_liveness, mc_initial_pair); - MC_UNSET_RAW_MEM; - - if(cursor != 0){ - MC_restore_snapshot(initial_snapshot_liveness); - MC_UNSET_RAW_MEM; - } - - MC_ddfs(0); + /* Pair already visited ? stop the exploration on the current path */ + if ((current_pair->exploration_started == 0) && (visited_num = is_visited_pair(reached_pair, current_pair)) != -1) { + + if (dot_output != NULL){ + MC_SET_MC_HEAP; + fprintf(dot_output, "\"%d\" -> \"%d\" [%s];\n", initial_global_state->prev_pair, visited_num, initial_global_state->prev_req); + fflush(dot_output); + MC_SET_STD_HEAP; + } + + XBT_DEBUG("Pair already visited (equal to pair %d), exploration on the current path stopped.", visited_num); + MC_SET_MC_HEAP; + current_pair->requests = 0; + MC_SET_STD_HEAP; + goto backtracking; + + }else{ - }else{ - if(state->type == 2){ + req = MC_state_get_request(current_pair->graph_state, &value); + + if (dot_output != NULL) { + MC_SET_MC_HEAP; + if (initial_global_state->prev_pair != 0 && initial_global_state->prev_pair != current_pair->num) { + fprintf(dot_output, "\"%d\" -> \"%d\" [%s];\n", initial_global_state->prev_pair, current_pair->num, initial_global_state->prev_req); + xbt_free(initial_global_state->prev_req); + } + initial_global_state->prev_pair = current_pair->num; + initial_global_state->prev_req = MC_request_get_dot_output(req, value); + if (current_pair->search_cycle) + fprintf(dot_output, "%d [shape=doublecircle];\n", current_pair->num); + fflush(dot_output); + MC_SET_STD_HEAP; + } + + char* req_str = MC_request_to_string(req, value); + XBT_DEBUG("Execute: %s", req_str); + xbt_free(req_str); + + /* Set request as executed */ + MC_state_set_executed_request(current_pair->graph_state, req, value); + + /* Update mc_stats */ + mc_stats->executed_transitions++; + if(current_pair->exploration_started == 0) + mc_stats->visited_pairs++; + + /* Answer the request */ + MC_simcall_handle(req, value); + + /* Wait for requests (schedules processes) */ + MC_wait_for_requests(); + + MC_SET_MC_HEAP; + + current_pair->requests--; + current_pair->exploration_started = 1; + + /* Get values of atomic propositions (variables used in the property formula) */ + prop_values = get_atomic_propositions_values(); + + /* Evaluate enabled/true transitions in automaton according to atomic propositions values and create new pairs */ + cursor = xbt_dynar_length(current_pair->automaton_state->out) - 1; + while (cursor >= 0) { + transition_succ = (xbt_automaton_transition_t)xbt_dynar_get_as(current_pair->automaton_state->out, cursor, xbt_automaton_transition_t); + res = MC_automaton_evaluate_label(transition_succ->label, prop_values); + if (res == 1 || res == 2) { /* 1 = True transition (always enabled), 2 = enabled transition according to atomic prop values */ + 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->depth = current_pair->depth + 1; + /* Get enabled processes and insert them in the interleave set of the next graph_state */ + MC_EACH_SIMIX_PROCESS(process, + 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); + + /* FIXME : get search_cycle value for each acceptant state */ + if (next_pair->automaton_state->type == 1 || current_pair->search_cycle) + next_pair->search_cycle = 1; + + /* Add new pair to the exploration stack */ + xbt_fifo_unshift(mc_stack, next_pair); + + } + cursor--; + } + + MC_SET_STD_HEAP; + + } /* End of visited_pair test */ - MC_SET_RAW_MEM; - mc_initial_pair = new_pair_stateless(initial_graph_state, state, MC_state_interleave_size(initial_graph_state)); - xbt_fifo_unshift(mc_stack_liveness, mc_initial_pair); - MC_UNSET_RAW_MEM; - - set_pair_reached(state); - //set_pair_reached_hash(state); - - if(cursor != 0){ - MC_restore_snapshot(initial_snapshot_liveness); - MC_UNSET_RAW_MEM; - } - - MC_ddfs(1); - - } - } - } - -} - - -void MC_ddfs(int search_cycle){ - - smx_process_t process; - mc_pair_stateless_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)); - - /* Update current state in buchi automaton */ - automaton->current_state = current_pair->automaton_state; - - - XBT_INFO("********************* ( Depth = %d, search_cycle = %d )", xbt_fifo_size(mc_stack_liveness), search_cycle); - XBT_INFO("Pair : graph=%p, automaton=%p(%s), %u interleave", current_pair->graph_state, current_pair->automaton_state, current_pair->automaton_state->id, MC_state_interleave_size(current_pair->graph_state)); - - mc_stats_pair->visited_pairs++; - - //sleep(1); - - int value; - mc_state_t next_graph_state = NULL; - smx_simcall_t req = NULL; - char *req_str; - - xbt_transition_t transition_succ; - unsigned int cursor = 0; - int res; - - mc_pair_stateless_t next_pair = NULL; - mc_pair_stateless_t pair_succ; - - if(xbt_fifo_size(mc_stack_liveness) < MAX_DEPTH_LIVENESS){ + } else { - //set_pair_visited(current_pair->automaton_state, search_cycle); - set_pair_visited_hash(current_pair->automaton_state, search_cycle); - - //XBT_INFO("Visited pairs : %lu", xbt_dynar_length(visited_pairs)); - XBT_INFO("Visited pairs : %lu", xbt_dynar_length(visited_pairs_hash)); - - 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_INFO("Execute: %s", req_str); - xbt_free(req_str); - - MC_state_set_executed_request(current_pair->graph_state, req, value); + backtracking: + if(visited_num == -1) + XBT_DEBUG("No more request to execute. Looking for backtracking point."); - /* Answer the request */ - SIMIX_simcall_pre(req, value); - - /* Wait for requests (schedules processes) */ - MC_wait_for_requests(); - - - MC_SET_RAW_MEM; - - /* 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; - - - 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)){ - //if(reached_hash(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)); - - XBT_INFO("*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*"); - XBT_INFO("| ACCEPTANCE CYCLE |"); - XBT_INFO("*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*"); - XBT_INFO("Counter-example that violates formula :"); - MC_show_stack_liveness(mc_stack_liveness); - MC_dump_stack_liveness(mc_stack_liveness); - MC_print_statistics_pairs(mc_stats_pair); - exit(0); - - }else{ - - XBT_INFO("Next pair (depth =%d) -> Acceptance pair : graph=%p, automaton=%p(%s)", xbt_fifo_size(mc_stack_liveness) + 1, pair_succ->graph_state, pair_succ->automaton_state, pair_succ->automaton_state->id); - - set_pair_reached(pair_succ->automaton_state); - //set_pair_reached_hash(pair_succ->automaton_state); - - XBT_INFO("Reached pairs : %lu", xbt_dynar_length(reached_pairs)); - //XBT_INFO("Reached pairs : %lu", xbt_dynar_length(reached_pairs_hash)); - - MC_SET_RAW_MEM; - xbt_fifo_unshift(mc_stack_liveness, pair_succ); - MC_UNSET_RAW_MEM; - - MC_ddfs(search_cycle); - - } - - }else{ - - if(!visited_hash(pair_succ->automaton_state, search_cycle)){ - //if(!visited(pair_succ->automaton_state, search_cycle)){ - - MC_SET_RAW_MEM; - xbt_fifo_unshift(mc_stack_liveness, pair_succ); - MC_UNSET_RAW_MEM; - - MC_ddfs(search_cycle); - - }else{ - - XBT_INFO("Next pair already visited ! "); - - } - - } - - }else{ - - if(((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2))){ - - XBT_INFO("Next pair (depth =%d) -> Acceptance pair : graph=%p, automaton=%p(%s)", xbt_fifo_size(mc_stack_liveness) + 1, pair_succ->graph_state, pair_succ->automaton_state, pair_succ->automaton_state->id); - - set_pair_reached(pair_succ->automaton_state); - //set_pair_reached_hash(pair_succ->automaton_state); - - search_cycle = 1; - - XBT_INFO("Reached pairs : %lu", xbt_dynar_length(reached_pairs)); - //XBT_INFO("Reached pairs : %lu", xbt_dynar_length(reached_pairs_hash)); - - } - - if(!visited_hash(pair_succ->automaton_state, search_cycle)){ - //if(!visited(pair_succ->automaton_state, search_cycle)){ - - MC_SET_RAW_MEM; - xbt_fifo_unshift(mc_stack_liveness, pair_succ); - MC_UNSET_RAW_MEM; - - MC_ddfs(search_cycle); - - }else{ - - XBT_INFO("Next pair already visited ! "); - - } - - } - - - /* Restore system before checking others successors */ - if(cursor != (xbt_dynar_length(successors) - 1)) - MC_replay_liveness(mc_stack_liveness, 1); - - - } - - if(MC_state_interleave_size(current_pair->graph_state) > 0){ - XBT_INFO("Backtracking to depth %d", xbt_fifo_size(mc_stack_liveness)); - MC_replay_liveness(mc_stack_liveness, 0); - } - } - - - }else{ /*No request to execute, search evolution in Büchi automaton */ - - 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)){ - //if(reached_hash(pair_succ->automaton_state)){ - - XBT_INFO("Next pair (depth = %d) already reached !", xbt_fifo_size(mc_stack_liveness) + 1); - - XBT_INFO("*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*"); - XBT_INFO("| ACCEPTANCE CYCLE |"); - XBT_INFO("*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*"); - XBT_INFO("Counter-example that violates formula :"); - MC_show_stack_liveness(mc_stack_liveness); - MC_dump_stack_liveness(mc_stack_liveness); - MC_print_statistics_pairs(mc_stats_pair); - exit(0); - - }else{ - - XBT_INFO("Next pair (depth = %d) -> Acceptance pair : graph=%p, automaton=%p(%s)", xbt_fifo_size(mc_stack_liveness) + 1, pair_succ->graph_state, pair_succ->automaton_state, pair_succ->automaton_state->id); - - set_pair_reached(pair_succ->automaton_state); - //set_pair_reached_hash(pair_succ->automaton_state); - - XBT_INFO("Reached pairs : %lu", xbt_dynar_length(reached_pairs)); - //XBT_INFO("Reached pairs : %lu", xbt_dynar_length(reached_pairs_hash)); - - MC_SET_RAW_MEM; - xbt_fifo_unshift(mc_stack_liveness, pair_succ); - MC_UNSET_RAW_MEM; - - MC_ddfs(search_cycle); - - } - - }else{ - - if(!visited_hash(pair_succ->automaton_state, search_cycle)){ - //if(!visited(pair_succ->automaton_state, search_cycle)){ - - MC_SET_RAW_MEM; - xbt_fifo_unshift(mc_stack_liveness, pair_succ); - MC_UNSET_RAW_MEM; - - MC_ddfs(search_cycle); - - }else{ - - XBT_INFO("Next pair already visited ! "); - - } - } - - - }else{ - - if(((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2))){ - - set_pair_reached(pair_succ->automaton_state); - //set_pair_reached_hash(pair_succ->automaton_state); - - search_cycle = 1; - - XBT_INFO("Reached pairs : %lu", xbt_dynar_length(reached_pairs)); - //XBT_INFO("Reached pairs : %lu", xbt_dynar_length(reached_pairs_hash)); - - } - - if(!visited_hash(pair_succ->automaton_state, search_cycle)){ - //if(!visited(pair_succ->automaton_state, search_cycle)){ - - MC_SET_RAW_MEM; - xbt_fifo_unshift(mc_stack_liveness, pair_succ); - MC_UNSET_RAW_MEM; - - MC_ddfs(search_cycle); - - }else{ - - XBT_INFO("Next pair already visited ! "); - - } - - } - - /* Restore system before checking others successors */ - if(cursor != xbt_dynar_length(successors) - 1) - MC_replay_liveness(mc_stack_liveness, 1); - - + MC_SET_MC_HEAP; + + xbt_dynar_free(&prop_values); + + /* Traverse the stack backwards until a pair with a non empty interleave + set is found, deleting all the pairs that have it empty in the way. */ + while ((current_pair = xbt_fifo_shift(mc_stack)) != NULL) { + if (current_pair->requests > 0) { + /* We found a backtracking point */ + XBT_DEBUG("Backtracking to depth %d", current_pair->depth); + xbt_fifo_unshift(mc_stack, current_pair); + MC_SET_STD_HEAP; + MC_replay_liveness(mc_stack); + XBT_DEBUG("Backtracking done"); + break; + }else{ + /* Delete pair */ + XBT_DEBUG("Delete pair %d at depth %d", current_pair->num, current_pair->depth); + if (current_pair->automaton_state->type == 1) + remove_acceptance_pair(current_pair->num); + MC_pair_delete(current_pair); + } } - - } - }else{ + MC_SET_STD_HEAP; + } /* End of if (current_pair->requests > 0) else ... */ - XBT_INFO("Max depth reached"); - - } - - if(xbt_fifo_size(mc_stack_liveness) == MAX_DEPTH_LIVENESS ){ - XBT_INFO("Pair (graph=%p, automaton =%p, search_cycle = %d, depth = %d) shifted in stack, maximum depth reached", current_pair->graph_state, current_pair->automaton_state, search_cycle, xbt_fifo_size(mc_stack_liveness) ); - }else{ - XBT_INFO("Pair (graph=%p, automaton =%p, search_cycle = %d, depth = %d) shifted in stack", current_pair->graph_state, current_pair->automaton_state, search_cycle, xbt_fifo_size(mc_stack_liveness) ); - } - + } /* End of while(xbt_fifo_size(mc_stack) > 0) */ - MC_SET_RAW_MEM; - xbt_fifo_shift(mc_stack_liveness); - if((current_pair->automaton_state->type == 1) || (current_pair->automaton_state->type == 2)){ - xbt_dynar_pop(reached_pairs, NULL); - //xbt_dynar_pop(reached_pairs_hash, NULL); - } - MC_UNSET_RAW_MEM; - - - }