mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-08-17 16:52:15 +00:00
Code Activity

add cce

Browse source 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-10-15 15:13:43 -07:00
parent 46fa245324
commit 9f9ae4427d
10 changed files with 259 additions and 139 deletions
Download patch file Download diff file Expand all files Collapse all files

108
src/sat/sat_bdd.h
View file

@ -25,34 +25,7 @@ Revision History:
namespace sat {
class bdd_manager;
class bdd {
friend class bdd_manager;
unsigned root;
bdd_manager* m;
bdd(unsigned root, bdd_manager* m);
public:
bdd(bdd & other);
bdd& operator=(bdd const& other);
~bdd();
bdd lo() const;
bdd hi() const;
unsigned var() const;
bool is_true() const;
bool is_false() const;
bdd operator!();
bdd operator&&(bdd const& other);
bdd operator||(bdd const& other);
bdd operator|=(bdd const& other) { return *this = *this || other; }
bdd operator&=(bdd const& other) { return *this = *this && other; }
std::ostream& display(std::ostream& out) const;
bool operator==(bdd const& other) const { return root == other.root; }
bool operator!=(bdd const& other) const { return root != other.root; }
};
std::ostream& operator<<(std::ostream& out, bdd const& b);
class bdd;
class bdd_manager {
friend bdd;
@ -169,6 +142,7 @@ namespace sat {
bool is_marked(unsigned i) { return m_mark[i] == m_mark_level; }
void try_reorder();
void sift_up(unsigned level);
static const BDD false_bdd = 0;
static const BDD true_bdd = 1;
@ -185,32 +159,70 @@ namespace sat {
inline void dec_ref(BDD b) { if (m_nodes[b].m_refcount != max_rc) m_nodes[b].m_refcount--; }
inline BDD level2bdd(unsigned l) const { return m_var2bdd[m_level2var[l]]; }
struct bdd_exception {};
public:
bdd_manager(unsigned nodes, unsigned cache_size);
~bdd_manager();
bdd mk_var(unsigned i);
bdd mk_nvar(unsigned i);
bdd mk_true() { return bdd(true_bdd, this); }
bdd mk_false() { return bdd(false_bdd, this); }
bdd mk_not(bdd b);
bdd mk_exists(unsigned n, unsigned const* vars, bdd const & b);
bdd mk_forall(unsigned n, unsigned const* vars, bdd const & b);
bdd mk_exists(unsigned v, bdd const& b) { return mk_exists(1, &v, b); }
bdd mk_forall(unsigned v, bdd const& b) { return mk_forall(1, &v, b); }
bdd mk_and(bdd const& a, bdd const& b) { return bdd(apply(a.root, b.root, bdd_and_op), this); }
bdd mk_or(bdd const& a, bdd const& b) { return bdd(apply(a.root, b.root, bdd_or_op), this); }
bdd mk_iff(bdd const& a, bdd const& b) { return bdd(apply(a.root, b.root, bdd_iff_op), this); }
bdd mk_ite(bdd const& c, bdd const& t, bdd const& e);
double dnf_size(bdd const& b) { return count(b, 0); }
double cnf_size(bdd const& b) { return count(b, 1); }
bdd mk_not(bdd b);
bdd mk_and(bdd const& a, bdd const& b);
bdd mk_or(bdd const& a, bdd const& b);
std::ostream& display(std::ostream& out, bdd const& b);
public:
struct mem_out {};
bdd_manager(unsigned nodes);
~bdd_manager();
void set_max_num_nodes(unsigned n) { m_max_num_bdd_nodes = n; }
bdd mk_var(unsigned i);
bdd mk_nvar(unsigned i);
bdd mk_true();
bdd mk_false();
bdd mk_exists(unsigned n, unsigned const* vars, bdd const & b);
bdd mk_forall(unsigned n, unsigned const* vars, bdd const & b);
bdd mk_exists(unsigned v, bdd const& b);
bdd mk_forall(unsigned v, bdd const& b);
bdd mk_iff(bdd const& a, bdd const& b);
bdd mk_ite(bdd const& c, bdd const& t, bdd const& e);
std::ostream& display(std::ostream& out);
};
class bdd {
friend class bdd_manager;
unsigned root;
bdd_manager* m;
bdd(unsigned root, bdd_manager* m);
public:
bdd(bdd & other);
bdd(bdd && other);
bdd& operator=(bdd const& other);
~bdd();
bdd lo() const;
bdd hi() const;
unsigned var() const;
bool is_true() const;
bool is_false() const;
bdd operator!();
bdd operator&&(bdd const& other);
bdd operator||(bdd const& other);
bdd operator|=(bdd const& other) { return *this = *this || other; }
bdd operator&=(bdd const& other) { return *this = *this && other; }
std::ostream& display(std::ostream& out) const;
bool operator==(bdd const& other) const { return root == other.root; }
bool operator!=(bdd const& other) const { return root != other.root; }
double cnf_size() const;
double dnf_size() const;
};
std::ostream& operator<<(std::ostream& out, bdd const& b);
}
#endif