-/* 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 <unistd.h>
+#include <sys/wait.h>
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_liveness, mc,
"Logging specific to algorithms for liveness properties verification");
-xbt_dynar_t 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;
-
+/********* Global variables *********/
-/* 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 */
- }
+xbt_dynar_t acceptance_pairs;
+xbt_dynar_t successors;
+xbt_parmap_t parmap;
- return hash;
+/********* Static functions *********/
-}
+static xbt_dynar_t get_atomic_propositions_values()
+{
+ int res;
+ int_f_void_t f;
+ unsigned int cursor = 0;
+ xbt_automaton_propositional_symbol_t ps = NULL;
+ xbt_dynar_t values = xbt_dynar_new(sizeof(int), NULL);
-int data_program_region_compare(void *d1, void *d2, size_t size){
- int distance = 0;
- int i;
-
- for(i=0; i<size; i++){
- if(memcmp(((char *)d1) + i, ((char *)d2) + i, 1) != 0){
- fprintf(stderr,"Different byte (offset=%d) (%p - %p) in data program region\n", i, (char *)d1 + i, (char *)d2 + i);
- distance++;
- }
+ 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);
}
-
- 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 i;
-
- for(i=0; i<size; i++){
- if(memcmp(((char *)d1) + i, ((char *)d2) + i, 1) != 0){
- fprintf(stderr, "Different byte (offset=%d) (%p - %p) in data libsimgrid region\n", i, (char *)d1 + i, (char *)d2 + i);
- distance++;
- }
- }
-
- fprintf(stderr, "Hamming distance between data libsimgrid regions : %d\n", distance);
-
- return distance;
+ return values;
}
-int snapshot_compare(mc_snapshot_t s1, mc_snapshot_t s2, void* s_heap, void* r_heap){
-
-
- if(s1->num_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++){
- if(s1->regions[i]->type != s2->regions[i]->type){
- XBT_INFO("Different type of region");
- errors++;
- }
+static mc_visited_pair_t is_reached_acceptance_pair(int pair_num,
+ xbt_automaton_state_t
+ automaton_state,
+ xbt_dynar_t
+ atomic_propositions)
+{
- 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++;
+ int raw_mem_set = (mmalloc_get_current_heap() == mc_heap);
+
+ MC_SET_MC_HEAP;
+
+ mc_visited_pair_t pair = NULL;
+ pair = MC_visited_pair_new(pair_num, automaton_state, atomic_propositions);
+ pair->acceptance_pair = 1;
+
+ if (xbt_dynar_is_empty(acceptance_pairs)) {
+
+ xbt_dynar_push(acceptance_pairs, &pair);
+
+ } else {
+
+ int min = -1, max = -1, index;
+ //int res;
+ mc_visited_pair_t pair_test;
+ int cursor;
+
+ index = get_search_interval(acceptance_pairs, pair, &min, &max);
+
+ if (min != -1 && max != -1) { // Acceptance pair with same number of processes and same heap bytes used exists
+
+ // 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;
+ while (cursor <= max) {
+ pair_test =
+ (mc_visited_pair_t) xbt_dynar_get_as(acceptance_pairs, cursor,
+ mc_visited_pair_t);
+ if (xbt_automaton_state_compare
+ (pair_test->automaton_state, pair->automaton_state) == 0) {
+ if (xbt_automaton_propositional_symbols_compare_value
+ (pair_test->atomic_propositions,
+ pair->atomic_propositions) == 0) {
+ if (snapshot_compare(pair_test, pair) == 0) {
+ XBT_INFO("Pair %d already reached (equal to pair %d) !",
+ pair->num, pair_test->num);
+
+ xbt_fifo_shift(mc_stack);
+ if (dot_output != NULL)
+ fprintf(dot_output, "\"%d\" -> \"%d\" [%s];\n",
+ initial_global_state->prev_pair, pair_test->num,
+ initial_global_state->prev_req);
+
+ if (!raw_mem_set)
+ MC_SET_STD_HEAP;
+
+ return NULL;
+ }
+ }
+ }
+ cursor++;
}
- 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:
- break;
- }
- }
-
- return (errors > 0);
-
-}
-
-int reached(xbt_state_t st){
-
-
- if(xbt_dynar_is_empty(reached_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);
- 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 #%d", pair_test->nb);
- if(automaton_state_compare(pair_test->automaton_state, st) == 0){
- if(propositional_symbols_compare_value(pair_test->prop_ato, prop_ato) == 0){
- //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");
+ xbt_dynar_insert_at(acceptance_pairs, min, &pair);
+ } else {
+ pair_test =
+ (mc_visited_pair_t) xbt_dynar_get_as(acceptance_pairs, index,
+ mc_visited_pair_t);
+ if (pair_test->nb_processes < pair->nb_processes) {
+ xbt_dynar_insert_at(acceptance_pairs, index + 1, &pair);
+ } else {
+ 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);
}
}
- 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(i<xbt_fifo_size(rdv1->comm_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(j<xbt_fifo_size(action1->simcalls)){
-
- 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;
-
-}
-
-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->nb = xbt_dynar_length(reached_pairs) + 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;
+ if (!raw_mem_set)
+ MC_SET_STD_HEAP;
- 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);
- }
+ return pair;
- /*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);
- }
- //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;
-
}
+static void remove_acceptance_pair(int pair_num)
+{
-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; j<sn->num_reg; j++){
- hash_regions[j] = hash_region(sn->regions[j]->data, sn->regions[j]->size);
- }
-
-
- /* 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;
+ int raw_mem_set = (mmalloc_get_current_heap() == mc_heap);
- 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_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");
- }
+ unsigned int cursor = 0;
+ mc_visited_pair_t pair_test = NULL;
- region_diff = 0;
+ xbt_dynar_foreach(acceptance_pairs, cursor, pair_test) {
+ if (pair_test->num == pair_num) {
+ break;
}
-
- 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_remove_at(acceptance_pairs, cursor, &pair_test);
- 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);
+ pair_test->acceptance_removed = 1;
+
+ if (_sg_mc_visited == 0) {
+ MC_visited_pair_delete(pair_test);
+ } else if (pair_test->visited_removed == 1) {
+ MC_visited_pair_delete(pair_test);
}
-
- xbt_dynar_push(reached_pairs_hash, &pair);
- MC_free_snapshot(sn);
-
- MC_UNSET_RAW_MEM;
-
+ if (!raw_mem_set)
+ MC_SET_STD_HEAP;
}
-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;
+static int MC_automaton_evaluate_label(xbt_automaton_exp_label_t l,
+ xbt_dynar_t atomic_propositions_values)
+{
- 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);
+ 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);
}
-
- 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");
- }
- }
-
-
- MC_free_snapshot(sn);
- xbt_dynar_reset(prop_ato);
- xbt_free(prop_ato);
- MC_UNSET_RAW_MEM;
- return 0;
-
- }
-}
-
-
-int visited_hash(xbt_state_t st, int sc){
-
-
- if(xbt_dynar_is_empty(visited_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; j<sn->num_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_visited_hash_t pair_test = NULL;
-
- int region_diff = 0;
- cursor = 0;
-
- xbt_dynar_foreach(visited_pairs_hash, 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){
- 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");
+ 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);
}
-
- 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_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_UNSET_RAW_MEM;
-
-}
-
-void set_pair_visited(xbt_state_t st, int sc){
-
-
- 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);
-}
-
-
-
-int MC_automaton_evaluate_label(xbt_exp_label_t l){
-
- 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)();
- }
+ case 4:{
+ return 2;
}
- return -1;
- }
- case 4 : {
- return 2;
- }
- default :
+ default:
return -1;
}
}
+void MC_pre_modelcheck_liveness(void)
+{
-/********************* Double-DFS stateless *******************/
+ initial_global_state->raw_mem_set = (mmalloc_get_current_heap() == mc_heap);
-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_t initial_pair = NULL;
+ smx_process_t process;
-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;
-}
+ MC_wait_for_requests();
-void MC_ddfs_init(void){
+ MC_SET_MC_HEAP;
- XBT_INFO("**************************************************");
- XBT_INFO("Double-DFS init");
- XBT_INFO("**************************************************");
+ acceptance_pairs = xbt_dynar_new(sizeof(mc_visited_pair_t), NULL);
+ visited_pairs = xbt_dynar_new(sizeof(mc_visited_pair_t), NULL);
+ successors = xbt_dynar_new(sizeof(mc_pair_t), NULL);
- mc_pair_stateless_t mc_initial_pair = NULL;
- mc_state_t initial_graph_state = NULL;
- smx_process_t process;
+ initial_global_state->snapshot = MC_take_snapshot(0);
+ initial_global_state->prev_pair = 0;
-
- MC_wait_for_requests();
+ MC_SET_STD_HEAP;
- MC_SET_RAW_MEM;
+ unsigned int cursor = 0;
+ xbt_automaton_state_t automaton_state;
- 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);
- }
- }
+ xbt_dynar_foreach(_mc_property_automaton->states, cursor, automaton_state) {
+ if (automaton_state->type == -1) { /* Initial automaton state */
- 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);
+ MC_SET_MC_HEAP;
- /* Save the initial state */
- initial_snapshot_liveness = xbt_new0(s_mc_snapshot_t, 1);
- MC_take_snapshot_liveness(initial_snapshot_liveness);
+ 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_UNSET_RAW_MEM;
+ /* Get enabled processes and insert them 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);
+ }
+ }
- unsigned int cursor = 0;
- xbt_state_t state;
+ initial_pair->requests =
+ MC_state_interleave_size(initial_pair->graph_state);
+ initial_pair->search_cycle = 0;
- xbt_dynar_foreach(automaton->states, cursor, state){
- if(state->type == -1){
+ xbt_fifo_unshift(mc_stack, initial_pair);
- 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_SET_STD_HEAP;
- MC_ddfs(0);
+ MC_modelcheck_liveness();
- }else{
- if(state->type == 2){
-
- MC_SET_RAW_MEM;
- mc_initial_pair = new_pair_stateless(initial_graph_state, state, MC_state_interleave_size(initial_graph_state));
- xbt_fifo_unshift(mc_stack_liveness, 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);
-
+ if (cursor != 0) {
+ MC_restore_snapshot(initial_global_state->snapshot);
+ MC_SET_STD_HEAP;
}
}
- }
+ }
+
+ if (initial_global_state->raw_mem_set)
+ MC_SET_MC_HEAP;
+ else
+ MC_SET_STD_HEAP;
+
}
-void MC_ddfs(int search_cycle){
+void MC_modelcheck_liveness()
+{
smx_process_t process;
- mc_pair_stateless_t current_pair = NULL;
+ mc_pair_t current_pair = NULL;
- if(xbt_fifo_size(mc_stack_liveness) == 0)
+ if (xbt_fifo_size(mc_stack) == 0)
return;
-
/* Get current pair */
- current_pair = (mc_pair_stateless_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack_liveness));
+ current_pair =
+ (mc_pair_t) xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack));
/* Update current state in buchi automaton */
- automaton->current_state = current_pair->automaton_state;
+ _mc_property_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++;
+ XBT_DEBUG
+ ("********************* ( Depth = %d, search_cycle = %d, interleave size %d, pair_num %d)",
+ xbt_fifo_size(mc_stack), current_pair->search_cycle,
+ MC_state_interleave_size(current_pair->graph_state), current_pair->num);
- //sleep(1);
+ mc_stats->visited_pairs++;
int value;
- mc_state_t next_graph_state = NULL;
smx_simcall_t req = NULL;
- char *req_str;
- xbt_transition_t transition_succ;
+ xbt_automaton_transition_t transition_succ;
unsigned int cursor = 0;
int res;
+ int visited_num;
+
+ mc_pair_t next_pair = NULL;
+ xbt_dynar_t prop_values = NULL;
+ mc_visited_pair_t reached_pair = NULL;
+ int counter_example_depth = 0;
+
+ if (xbt_fifo_size(mc_stack) < _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_pair =
+ is_reached_acceptance_pair(current_pair->num,
+ current_pair->automaton_state,
+ current_pair->atomic_propositions)) ==
+ NULL) {
+
+ counter_example_depth = xbt_fifo_size(mc_stack);
+ 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();
+
+ }
+ }
+ }
- mc_pair_stateless_t next_pair = NULL;
- mc_pair_stateless_t pair_succ;
-
- if(xbt_fifo_size(mc_stack_liveness) < MAX_DEPTH_LIVENESS){
-
- //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);
-
- /* Answer the request */
- SIMIX_simcall_pre(req, value);
-
- /* Wait for requests (schedules processes) */
- MC_wait_for_requests();
+ if ((visited_num =
+ is_visited_pair(reached_pair, current_pair->num,
+ current_pair->automaton_state,
+ current_pair->atomic_propositions)) != -1) {
+ MC_SET_MC_HEAP;
+ if (dot_output != NULL)
+ fprintf(dot_output, "\"%d\" -> \"%d\" [%s];\n",
+ initial_global_state->prev_pair, visited_num,
+ initial_global_state->prev_req);
+ MC_SET_STD_HEAP;
- MC_SET_RAW_MEM;
+ } else {
- /* Create the new expanded graph_state */
- next_graph_state = MC_state_pair_new();
+ while ((req =
+ MC_state_get_request(current_pair->graph_state,
+ &value)) != NULL) {
- /* Get enabled process and insert it in the interleave set of the next graph_state */
- xbt_swag_foreach(process, simix_global->process_list){
- if(MC_process_is_enabled(process)){
- MC_state_interleave_process(next_graph_state, process);
- }
- }
+ MC_SET_MC_HEAP;
+ if (dot_output != NULL) {
+ 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;
+ }
+ MC_SET_STD_HEAP;
- xbt_dynar_reset(successors);
+ MC_LOG_REQUEST(mc_liveness, req, value);
- MC_UNSET_RAW_MEM;
+ MC_SET_MC_HEAP;
+ if (dot_output != NULL) {
+ 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);
+ }
+ MC_SET_STD_HEAP;
+ MC_state_set_executed_request(current_pair->graph_state, req, value);
+ mc_stats->executed_transitions++;
- cursor= 0;
- xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){
+ /* Answer the request */
+ SIMIX_simcall_enter(req, value);
- res = MC_automaton_evaluate_label(transition_succ->label);
+ /* Wait for requests (schedules processes) */
+ MC_wait_for_requests();
- if(res == 1){ // enabled transition in automaton
- MC_SET_RAW_MEM;
- next_pair = new_pair_stateless(next_graph_state, transition_succ->dst, MC_state_interleave_size(next_graph_state));
- xbt_dynar_push(successors, &next_pair);
- MC_UNSET_RAW_MEM;
- }
+ MC_SET_MC_HEAP;
+ prop_values = get_atomic_propositions_values();
+ MC_SET_STD_HEAP;
- }
+ int new_pair = 0;
- 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);
- }
- }
+ /* Evaluate enabled transition according to atomic propositions values */
+ cursor = 0;
+ xbt_dynar_foreach(current_pair->automaton_state->out, cursor,
+ transition_succ) {
-
- }else{ /*No request to execute, search evolution in Büchi automaton */
+ res =
+ MC_automaton_evaluate_label(transition_succ->label,
+ prop_values);
- MC_SET_RAW_MEM;
+ if (res == 1) { // enabled transition in automaton
- /* Create the new expanded graph_state */
- next_graph_state = MC_state_pair_new();
+ if (new_pair)
+ MC_replay_liveness(mc_stack, 1);
- xbt_dynar_reset(successors);
+ MC_SET_MC_HEAP;
- MC_UNSET_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 processes and insert them 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);
+ }
+ }
- cursor= 0;
- xbt_dynar_foreach(current_pair->automaton_state->out, cursor, transition_succ){
+ next_pair->requests =
+ MC_state_interleave_size(next_pair->graph_state);
- res = MC_automaton_evaluate_label(transition_succ->label);
+ if (next_pair->automaton_state->type == 1
+ || next_pair->automaton_state->type == 2
+ || current_pair->search_cycle)
+ next_pair->search_cycle = 1;
- if(res == 1){ // enabled transition in automaton
- MC_SET_RAW_MEM;
- next_pair = new_pair_stateless(next_graph_state, transition_succ->dst, MC_state_interleave_size(next_graph_state));
- xbt_dynar_push(successors, &next_pair);
- MC_UNSET_RAW_MEM;
- }
+ xbt_fifo_unshift(mc_stack, next_pair);
- }
+ if (mc_stats->expanded_pairs % 1000000 == 0)
+ XBT_INFO("Expanded pairs : %lu", mc_stats->expanded_pairs);
- 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;
- }
+ MC_SET_STD_HEAP;
- }
+ new_pair = 1;
- cursor = 0;
-
- xbt_dynar_foreach(successors, cursor, pair_succ){
+ MC_modelcheck_liveness();
- 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)){
+ /* Then, evaluate true transitions (always true, whatever atomic propositions values) */
+ cursor = 0;
+ xbt_dynar_foreach(current_pair->automaton_state->out, cursor,
+ transition_succ) {
- 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);
+ res =
+ MC_automaton_evaluate_label(transition_succ->label,
+ prop_values);
- }else{
+ if (res == 2) { // true transition in automaton
- 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));
+ if (new_pair)
+ MC_replay_liveness(mc_stack, 1);
- MC_SET_RAW_MEM;
- xbt_fifo_unshift(mc_stack_liveness, pair_succ);
- MC_UNSET_RAW_MEM;
-
- MC_ddfs(search_cycle);
+ MC_SET_MC_HEAP;
- }
+ 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();
- }else{
+ /* 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);
+ }
+ }
- if(!visited_hash(pair_succ->automaton_state, search_cycle)){
- //if(!visited(pair_succ->automaton_state, search_cycle)){
+ next_pair->requests =
+ MC_state_interleave_size(next_pair->graph_state);
- MC_SET_RAW_MEM;
- xbt_fifo_unshift(mc_stack_liveness, pair_succ);
- MC_UNSET_RAW_MEM;
-
- MC_ddfs(search_cycle);
-
- }else{
+ if (next_pair->automaton_state->type == 1
+ || next_pair->automaton_state->type == 2
+ || current_pair->search_cycle)
+ next_pair->search_cycle = 1;
- XBT_INFO("Next pair already visited ! ");
+ xbt_fifo_unshift(mc_stack, next_pair);
- }
- }
-
+ if (mc_stats->expanded_pairs % 1000000 == 0)
+ XBT_INFO("Expanded pairs : %lu", mc_stats->expanded_pairs);
- }else{
-
- if(((pair_succ->automaton_state->type == 1) || (pair_succ->automaton_state->type == 2))){
+ MC_SET_STD_HEAP;
- set_pair_reached(pair_succ->automaton_state);
- //set_pair_reached_hash(pair_succ->automaton_state);
-
- search_cycle = 1;
+ new_pair = 1;
- XBT_INFO("Reached pairs : %lu", xbt_dynar_length(reached_pairs));
- //XBT_INFO("Reached pairs : %lu", xbt_dynar_length(reached_pairs_hash));
+ MC_modelcheck_liveness();
- }
+ }
- 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{
+ if (MC_state_interleave_size(current_pair->graph_state) > 0) {
+ XBT_DEBUG("Backtracking to depth %d", xbt_fifo_size(mc_stack));
+ MC_replay_liveness(mc_stack, 0);
+ }
- 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);
+ } else {
-
- }
-
+ 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.");
}
-
- }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) );
+ if (xbt_fifo_size(mc_stack) == _sg_mc_max_depth) {
+ XBT_DEBUG("Pair %d (depth = %d) shifted in stack, maximum depth reached",
+ current_pair->num, xbt_fifo_size(mc_stack));
+ } else {
+ XBT_DEBUG("Pair %d (depth = %d) shifted in stack", current_pair->num,
+ xbt_fifo_size(mc_stack));
}
-
- 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;
-
-
-}
-
-
-#ifdef SIMGRID_TEST
-
-XBT_TEST_SUITE("mc_liveness", "Model checking liveness properties");
-XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(mc_liveness);
-
-XBT_TEST_UNIT("snapshots_comparison", test_compare_snapshot, "Comparison of snapshots")
-{
-
- MC_SET_RAW_MEM;
-
- /* Save first snapshot */
- mc_snapshot_t snapshot1 = xbt_new0(s_mc_snapshot_t, 1);
- MC_take_snapshot_liveness(snapshot1);
-
- /* Save second snapshot */
- mc_snapshot_t snapshot2 = xbt_new0(s_mc_snapshot_t, 1);
- MC_take_snapshot_liveness(snapshot2);
-
- MC_UNSET_RAW_MEM;
+ MC_SET_MC_HEAP;
+ xbt_dynar_free(&prop_values);
+ current_pair = xbt_fifo_shift(mc_stack);
+ if (xbt_fifo_size(mc_stack) != _sg_mc_max_depth - 1
+ && current_pair->requests > 0 && current_pair->search_cycle) {
+ remove_acceptance_pair(current_pair->num);
+ }
+ MC_pair_delete(current_pair);
- xbt_test_assert(snapshot_compare(snapshot1, snapshot2, std_heap, raw_heap) == 0, "Different consecutive snapshot");
-
+ MC_SET_STD_HEAP;
}
-
-#endif
