void Be_Cnf_RemoveDuplicateLiterals(Be_Cnf_ptr self)
{
int i, j;
Siter iter;
int * clause = (int *)NULL;
hash_ptr lits = (hash_ptr)NULL;
nusmv_assert(self != NULL);
lits = new_assoc();
for (iter = Slist_first(Be_Cnf_GetClausesList(self));
!Siter_is_end(iter);
iter = Siter_next(iter)) {
clause = (int*) Siter_element(iter);
i = 0;
while (clause[i] != 0) {
if (Nil != find_assoc(lits, NODE_FROM_INT(clause[i]))) {
j = i+1;
while (clause[j] != 0) {
clause[j-1] = clause[j];
j++;
}
}
else {
insert_assoc(lits, NODE_FROM_INT(clause[i]), NODE_FROM_INT(1));
}
i++;
}
/* this clear the hash */
clear_assoc(lits);
}
free_assoc(lits);
}
/**Function********************************************************************
Synopsis [Clears the memoization hash of the wff2nff
conversion function]
Description [Clears the memoization hash of the wff2nff
conversion function]
SideEffects []
SeeAlso []
******************************************************************************/
void w2w_clear_wff2nnf_memoization()
{
nusmv_assert(wff2nnf_hash == (hash_ptr) NULL);
clear_assoc(wff2nnf_hash);
}
