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add ovfl constraint

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-12-09 09:05:23 -08:00
parent 6ddca4091a
commit 0dcaf9b9f9
5 changed files with 155 additions and 1 deletions
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7
src/math/polysat/constraint.h
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@ -20,10 +20,11 @@ Author:
namespace polysat {
enum ckind_t { ule_t };
enum ckind_t { ule_t, mul_ovfl_t };
class constraint;
class ule_constraint;
class mul_ovfl_constraint;
class signed_constraint;
using constraint_hash = obj_ptr_hash<constraint>;
@ -130,6 +131,7 @@ namespace polysat {
friend class constraint_manager;
friend class clause;
friend class ule_constraint;
friend class mul_ovfl_constraint;
// constraint_manager* m_manager;
ckind_t m_kind;
@ -156,6 +158,7 @@ namespace polysat {
virtual bool is_eq() const { return false; }
bool is_ule() const { return m_kind == ckind_t::ule_t; }
bool is_mul_ovfl() const { return m_kind == ckind_t::mul_ovfl_t; }
ckind_t kind() const { return m_kind; }
virtual std::ostream& display(std::ostream& out, lbool status) const = 0;
virtual std::ostream& display(std::ostream& out) const = 0;
@ -170,6 +173,8 @@ namespace polysat {
ule_constraint& to_ule();
ule_constraint const& to_ule() const;
mul_ovfl_constraint& to_mul_ovfl();
mul_ovfl_constraint const& to_mul_ovfl() const;
unsigned_vector& vars() { return m_vars; }
unsigned_vector const& vars() const { return m_vars; }
unsigned var(unsigned idx) const { return m_vars[idx]; }