/* NDFS dfs_blue */
void
ndfs_blue (run_t *run, wctx_t *ctx)
{
alg_local_t *loc = ctx->local;
transition_info_t ti = GB_NO_TRANSITION;
ndfs_blue_handle (ctx, ctx->initial, &ti, 0);
ctx->counters->trans = 0; //reset trans count
while ( !run_is_stopped(run) ) {
raw_data_t state_data = dfs_stack_top (loc->stack);
if (NULL != state_data) {
state_info_deserialize (ctx->state, state_data);
nndfs_color_t color = nn_get_color (&loc->color_map, ctx->state->ref);
if ( nn_color_eq(color, NNWHITE) ) {
if (all_red)
bitvector_set ( &loc->stackbits, ctx->counters->level_cur );
nn_set_color (&loc->color_map, ctx->state->ref, NNCYAN);
ndfs_explore_state_blue (ctx);
} else {
if ( all_red && ctx->counters->level_cur != 0 &&
!nn_color_eq(color, NNPINK) )
bitvector_unset ( &loc->stackbits, ctx->counters->level_cur - 1);
dfs_stack_pop (loc->stack);
}
} else { //backtrack
if (0 == dfs_stack_nframes (loc->stack))
return;
dfs_stack_leave (loc->stack);
ctx->counters->level_cur--;
state_data = dfs_stack_top (loc->stack);
state_info_deserialize (loc->seed, state_data);
if ( all_red && bitvector_is_set(&loc->stackbits, ctx->counters->level_cur) ) {
/* exit if backtrack hits seed, leave stack the way it was */
nn_set_color (&loc->color_map, loc->seed->ref, NNPINK);
loc->counters.allred++;
if ( GBbuchiIsAccepting(ctx->model, state_info_state(loc->seed)) )
loc->counters.accepting++;
} else if ( GBbuchiIsAccepting(ctx->model, state_info_state(loc->seed)) ) {
/* call red DFS for accepting states */
ndfs_red (ctx, loc->seed->ref);
nn_set_color (&loc->color_map, loc->seed->ref, NNPINK);
} else {
if (all_red && ctx->counters->level_cur > 0)
bitvector_unset (&loc->stackbits, ctx->counters->level_cur - 1);
nn_set_color (&loc->color_map, loc->seed->ref, NNBLUE);
}
dfs_stack_pop (loc->stack);
}
}
}
static inline void
set_proviso_stack (wctx_t* ctx, alg_local_t* loc, cndfs_alg_local_t* cloc)
{
switch (cloc->successors) {
case NONEC: bitvector_set (&loc->stackbits, pred(ctx, NOCYCLE)); break;
case CYCLE: bitvector_unset (&loc->stackbits, pred(ctx, NOCYCLE)); break;
case SRCINV: bitvector_set (&loc->stackbits, pred(ctx, INVOL)); break;
default: HREassert (false);
}
}
int
dm_bitvector_col(bitvector_t *bv, const matrix_t *m, int col)
{
// check size
if (bitvector_size (bv) != (size_t)dm_nrows (m)) return -1;
// copy row
for (int i = 0; i < dm_nrows (m); i++) {
if (dm_is_set (m, i, col)) {
bitvector_set(bv, i);
} else {
bitvector_unset(bv, i);
}
}
return 0;
}
void
dm_unset (matrix_t *m, int row, int col)
{
// get permutation
int rowp = m->row_perm.data[row].becomes;
int colp = m->col_perm.data[col].becomes;
// calculate bit number
int bitnr = rowp * (m->bits_per_row) + colp;
// counts
if (bitvector_is_set (&(m->bits), bitnr)) {
m->row_perm.count[rowp]--;
m->col_perm.count[colp]--;
}
bitvector_unset (&(m->bits), bitnr);
}
int
main (void)
{
bitvector_t b1;
bitvector_t b2;
bitvector_create (&b1, 20);
user_bitvector_print (&b1);
bitvector_set (&b1, 4);
user_bitvector_print (&b1);
bitvector_copy (&b2, &b1);
bitvector_unset (&b1, 4);
user_bitvector_print (&b1);
user_bitvector_print (&b2);
// test is_empty
printf ("is_empty b1? %c (should be t)\n", bitvector_is_empty(&b1)?'t':'f');
printf ("is_empty b2? %c (should be f)\n", bitvector_is_empty(&b2)?'t':'f');
// set even/odd bits in b1/b2
for(int i=0; i<20; ++i)
{
if (i%2)
{
bitvector_set(&b1,i);
} else {
bitvector_set(&b2,i);
}
}
// print before union
printf ("before union\n");
user_bitvector_print (&b1);
user_bitvector_print (&b2);
// disjoint?
printf ("b1,b2 are disjoint %c (should be t)\n", bitvector_is_disjoint(&b1, &b2)?'t':'f');
printf ("union\n");
bitvector_union(&b1, &b2);
// disjoint?
printf ("b1,b2 are disjoint %c (should be f)\n", bitvector_is_disjoint(&b1, &b2)?'t':'f');
// print after union
user_bitvector_print (&b1);
user_bitvector_print (&b2);
printf ("intersect\n");
bitvector_intersect(&b1, &b2);
// disjoint?
printf ("b1,b2 are disjoint %c (should be f)\n", bitvector_is_disjoint(&b1, &b2)?'t':'f');
// print after intersection
user_bitvector_print (&b1);
user_bitvector_print (&b2);
printf ("invert b1\n");
bitvector_invert(&b1);
// print after inversion
user_bitvector_print (&b1);
// disjoint?
printf ("b1,b2 are disjoint %c (should be t)\n", bitvector_is_disjoint(&b1, &b2)?'t':'f');
bitvector_free (&b2);
bitvector_free (&b1);
matrix_t m1;
matrix_t m2;
dm_create (&m1, 10, 10);
print_matrix (&m1);
printf ("dm_set(4,4)\n");
dm_set (&m1, 4, 4);
print_matrix (&m1);
printf ("dm_unset(4,4)\n");
dm_unset (&m1, 4, 4);
print_matrix (&m1);
printf ("test shift permutation (3,4,5)(6,7)\n");
printf ("before\n");
dm_set (&m1, 3, 3);
dm_set (&m1, 4, 4);
dm_set (&m1, 5, 5);
dm_set (&m1, 6, 6);
dm_set (&m1, 7, 7);
print_matrix (&m1);
printf ("after\n");
// create permutation_group, apply
permutation_group_t o1;
dm_create_permutation_group (&o1, 2, NULL);
dm_add_to_permutation_group (&o1, 3);
dm_add_to_permutation_group (&o1, 4);
dm_add_to_permutation_group (&o1, 5);
dm_close_group (&o1);
dm_add_to_permutation_group (&o1, 6);
dm_add_to_permutation_group (&o1, 7);
dm_permute_cols (&m1, &o1);
print_matrix (&m1);
dm_free_permutation_group (&o1);
printf ("swap cols 6,7\n");
dm_swap_cols (&m1, 6, 7);
print_matrix (&m1);
printf ("swap rows 6,7\n");
dm_swap_rows (&m1, 6, 7);
print_matrix (&m1);
printf ("copy\n");
dm_create(&m2, dm_nrows(&m1), dm_ncols(&m1));
dm_copy (&m1, &m2);
// TODO: needs some more work
print_matrix (&m2);
dm_sort_rows (&m1, &min_row_first);
print_matrix (&m1);
dm_sort_rows (&m1, &max_row_first);
print_matrix (&m1);
dm_print_perm (&(m1.row_perm));
printf ("to nub rows added & resorted\n");
dm_set (&m1, 7, 3);
dm_set (&m1, 8, 4);
dm_sort_rows (&m1, &max_row_first);
print_matrix (&m1);
printf ("flatten \n");
dm_flatten (&m1);
print_matrix (&m1);
dm_print_perm (&(m1.row_perm));
printf ("nub sorted\n");
//dm_nub_rows (&m1, &eq_rows, NULL);
print_matrix (&m1);
dm_print_perm (&(m1.row_perm));
/*
* printf("again, now to test row order & nub idx\n"); dm_free(&m1);
* dm_create(&m1, 10, 10); dm_set(&m1, 0,0); dm_set(&m1, 1,0);
* dm_set(&m1, 2,3); dm_set(&m1, 3,3); print_matrix(&m1);
*
* printf("nub sorted\n");
*
* dm_nub_rows(&m1);
*
* print_matrix(&m1);
*
* dm_print_perm(&(m1.row_perm)); */
printf ("optimize sorted\n");
dm_set (&m1, 0, 7);
dm_set (&m1, 1, 6);
dm_set (&m1, 3, 9);
printf ("before\n");
print_matrix (&m1);
dm_optimize (&m1);
printf ("after\n");
print_matrix (&m1);
printf ("resorted\n");
dm_sort_rows (&m1, &max_row_first);
print_matrix (&m1);
/*
dm_nub_cols(&m1);
dm_ungroup_rows(&m1);
dm_ungroup_cols(&m1);
print_matrix (&m1);
*/
// get bitvector from matrix text
bitvector_create (&b1, 6);
bitvector_create (&b2, 10);
printf ("bitvector of row 0\n");
user_bitvector_print (&b2);
printf ("bitvector of col 8\n");
user_bitvector_print (&b1);
bitvector_free (&b2);
bitvector_free (&b1);
printf ("count test\n");
for (int i = 0; i < dm_nrows (&m1); i++)
printf ("ones in row %d: %d\n", i, dm_ones_in_row (&m1, i));
for (int i = 0; i < dm_ncols (&m1); i++)
printf ("ones in col %d: %d\n", i, dm_ones_in_col (&m1, i));
printf ("iterator test\n");
dm_row_iterator_t mx;
dm_col_iterator_t my;
for (int i = 0; i < dm_nrows (&m1); i++) {
printf ("iterator row: %d\n", i);
dm_create_row_iterator (&mx, &m1, i);
int r;
while ((r = dm_row_next (&mx)) != -1)
printf (" next: %d\n", r);
printf ("\n\n");
}
for (int i = 0; i < dm_ncols (&m1); i++) {
printf ("iterator col: %d\n", i);
dm_create_col_iterator (&my, &m1, i);
int r;
while ((r = dm_col_next (&my)) != -1)
printf (" next: %d\n", r);
printf ("\n\n");
}
printf ("projection test\n");
int s0[10];
int src[10];
int prj[2];
int tgt[10];
// initialize
for (int i = 0; i < 10; i++) {
s0[i] = -i;
src[i] = i;
}
// do projection
int prj_n = dm_project_vector (&m1, 0, src, prj);
// print projection
printf ("projection:");
for (int i = 0; i < prj_n; i++) {
printf (" %d", prj[i]);
}
printf ("\n");
printf ("expansion test\n");
// do expansion
int exp_n = dm_expand_vector (&m1, 0, s0, prj, tgt);
(void)exp_n;
// print expansion
printf ("expansion:");
for (int i = 0; i < 10; i++) {
printf (" %d", tgt[i]);
}
printf ("\n");
// subsumption
printf ("subsumption test:\n");
dm_swap_rows (&m1, 0, 3);
dm_swap_rows (&m1, 1, 2);
dm_flatten (&m1);
print_matrix (&m1);
dm_subsume_rows (&m1, &eq_rows, NULL);
printf ("after subsumption:\n");
print_matrix (&m1);
printf ("\n");
printf ("after ungrouping:\n");
dm_ungroup_rows (&m1);
print_matrix (&m1);
printf ("\n");
printf ("column sort test:\n");
dm_flatten (&m1);
printf ("max col first:\n");
dm_sort_cols (&m1, &max_col_first);
print_matrix (&m1);
printf ("min col first:\n");
dm_sort_cols (&m1, &min_col_first);
print_matrix (&m1);
printf ("nub columns test:\n");
dm_set (&m1, 0, 1);
dm_set (&m1, 3, 1);
dm_set (&m1, 3, 4);
dm_set (&m1, 3, 5);
dm_sort_cols (&m1, &max_col_first);
// dm_flatten(&m1);
printf ("max col first:\n");
print_matrix (&m1);
//printf ("subsume columns:\n");
//dm_subsume_cols (&m1, &eq_cols, NULL);
//dm_subsume_rows (&m1, &eq_rows, NULL);
print_matrix (&m1);
printf ("column permutation:\n");
dm_print_perm (&(m1.col_perm));
printf ("optimize columns:\n");
dm_optimize (&m1);
print_matrix (&m1);
//printf ("ungroup columns:\n");
//dm_ungroup_cols (&m1);
//print_matrix (&m1);
//printf ("all permutations:\n");
//dm_set (&m1, 0, 9);
//dm_nub_cols(&m1, &eq_cols, NULL);
//print_matrix (&m1);
//dm_all_perm (&m1);
dm_free (&m2);
dm_free (&m1);
return 0;
}
/* ENDFS dfs_blue */
void
endfs_blue (run_t *run, wctx_t *ctx)
{
HREassert (ecd, "CNDFS's correctness depends crucially on ECD");
alg_local_t *loc = ctx->local;
cndfs_alg_local_t *cloc = (cndfs_alg_local_t *) ctx->local;
transition_info_t ti = GB_NO_TRANSITION;
uint32_t global_color;
int accepting;
cloc->successors = NONEC;
endfs_handle_blue (ctx, ctx->initial, &ti, 0);
ctx->counters->trans = 0; //reset trans count
cloc->accepting_depth = 0;
alg_global_t *sm = ctx->global;
while ( !run_is_stopped(ctx->run) ) {
raw_data_t state_data = dfs_stack_top (loc->stack);
if (NULL != state_data) {
state_info_deserialize (ctx->state, state_data);
global_color = state_store_get_colors (ctx->state->ref);
if (global_color < CBLUE && !on_stack_accepting_up(ctx, &accepting)) {
if (global_color == CWHITE)
update_color (ctx, ctx->state->ref, CCYAN, 0);
if (all_red)
bitvector_set (&loc->stackbits, cur(ctx,REDALL));
bitvector_unset (&loc->stackbits, cur(ctx,INVOL));
endfs_explore_state_blue (ctx);
} else {
if ( all_red && ctx->counters->level_cur != 0 && global_color != CRED )
bitvector_unset (&loc->stackbits, pred(ctx,REDALL));
dfs_stack_pop (loc->stack);
}
} else { //backtrack
if (0 == dfs_stack_nframes(loc->stack))
break;
dfs_stack_leave (loc->stack);
ctx->counters->level_cur--;
/* call red DFS for accepting states */
state_data = dfs_stack_top (loc->stack);
state_info_deserialize (loc->seed, state_data);
if (check_cndfs_proviso(ctx)) {
reach_explore_all (ctx, loc->seed);
continue;
}
accepting = pins_state_is_accepting(ctx->model, state_info_state(loc->seed)) != 0;
/* Mark state GGREEN on backtrack */
update_color (ctx, loc->seed->ref, CBLUE, 1);
if ( all_red && bitvector_is_set(&loc->stackbits, cur(ctx,REDALL)) ) {
/* all successors are red */
//permute_trans (loc->permute, ctx->state, check, ctx);
set_all_red2 (ctx, loc->seed);
} else if ( accepting ) {
sm->work = loc->seed->ref;
endfs_red (ctx);
if (Strat_ENDFS == loc->strat)
endfs_handle_dangerous (ctx);
else
cndfs_handle_nonseed_accepting (ctx);
sm->work = SIZE_MAX;
} else if (all_red && ctx->counters->level_cur > 0 &&
state_store_get_colors (loc->seed->ref) != CRED) {
/* unset the all-red flag (only for non-initial nodes) */
bitvector_unset (&loc->stackbits, pred(ctx,REDALL));
}
accepting_down (ctx, loc->seed, accepting);
dfs_stack_pop (loc->stack);
}
}
HREassert (run_is_stopped(ctx->run) || fset_count(cloc->pink) == 0);
// if the recursive strategy uses global bits (global pruning)
// then do simple load balancing (only for the top-level strategy)
if ( Strat_ENDFS == loc->strat &&
run == run->shared->top_level &&
(Strat_LTLG & sm->rec->local->strat) ) {
endfs_lb (ctx);
}
if (global->exit_status == LTSMIN_EXIT_SUCCESS && ctx->id == 0) {
Warning(info," ");
Warning(info,"Empty product with LTL!");
Warning(info," ");
}
}
/* ENDFS dfs_red */
static void
endfs_red (wctx_t *ctx)
{
alg_local_t *loc = ctx->local;
cndfs_alg_local_t *cloc = (cndfs_alg_local_t *) ctx->local;
size_t seed_level = dfs_stack_nframes (loc->stack);
int accepting = 0;
int on_stack;
size_t count = fset_count(cloc->pink);
size_t *level;
while ( !run_is_stopped(ctx->run) ) {
raw_data_t state_data = dfs_stack_top (loc->stack);
if (NULL != state_data) {
state_info_deserialize (ctx->state, state_data);
// seed is only state on both cyan and pink stack
on_stack = ctx->state->ref == loc->seed->ref;
if (!on_stack) {
on_stack = fset_find (cloc->pink, NULL, &ctx->state->ref, (void**)&level, false);
HREassert (on_stack != FSET_FULL);
}
if (!on_stack && state_store_get_colors(ctx->state->ref) != CRED) {
on_stack_accepting_up (ctx, &accepting); //add to stack
bitvector_unset (&loc->stackbits, cur(ctx,INVOL));
dfs_stack_push (cloc->in_stack, state_data);
if ( Strat_CNDFS == loc->strat && ctx->state->ref != loc->seed->ref && accepting)
dfs_stack_push (cloc->out_stack, state_data);
endfs_explore_state_red (ctx);
} else {
if (seed_level == dfs_stack_nframes (loc->stack))
break;
dfs_stack_pop (loc->stack);
}
} else { //backtrack
dfs_stack_leave (loc->stack);
ctx->counters->level_cur--;
/* exit search if backtrack hits seed, leave stack the way it was */
if (seed_level == dfs_stack_nframes(loc->stack))
break;
state_data = dfs_stack_top (loc->stack);
state_info_deserialize (ctx->state, state_data);
if (check_cndfs_proviso(ctx)) {
reach_explore_all (ctx, ctx->state);
continue;
}
accepting = pins_state_is_accepting (ctx->model, state_info_state(ctx->state)) != 0;
accepting_down (ctx, ctx->state, accepting);
dfs_stack_pop (loc->stack);
}
}
if (!run_is_stopped(ctx->run)) {
HREassert (fset_count(cloc->pink) == count);
}
}
