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fix bugs related to use of lookahead equivalences and encoding of pb constraints

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-05-15 09:33:27 -07:00
parent c49550ff2d
commit 2033e649b5
8 changed files with 115 additions and 70 deletions
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19
src/sat/card_extension.h
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@ -74,7 +74,7 @@ namespace sat {
unsigned m_max_sum;
wliteral m_wlits[0];
public:
static size_t get_obj_size(unsigned num_lits) { return sizeof(card) + num_lits * sizeof(wliteral); }
static size_t get_obj_size(unsigned num_lits) { return sizeof(pb) + num_lits * sizeof(wliteral); }
pb(unsigned index, literal lit, svector<wliteral> const& wlits, unsigned k);
unsigned index() const { return m_index; }
literal lit() const { return m_lit; }
@ -205,6 +205,8 @@ namespace sat {
void reset_coeffs();
void reset_marked_literals();
void unwatch_literal(literal w, card* c);
void get_card_antecedents(literal l, card const& c, literal_vector & r);
// xor specific functionality
void copy_xor(card_extension& result);
@ -218,13 +220,14 @@ namespace sat {
lbool add_assign(xor& x, literal alit);
void asserted_xor(literal l, ptr_vector<xor>* xors, xor* x);
void get_xor_antecedents(literal l, unsigned index, justification js, literal_vector& r);
void get_xor_antecedents(literal l, xor const& x, literal_vector & r);
bool is_card_index(unsigned idx) const { return 0x00 == (idx & 0x11); }
bool is_xor_index(unsigned idx) const { return 0x01 == (idx & 0x11); }
bool is_pb_index(unsigned idx) const { return 0x11 == (idx & 0x11); }
bool is_card_index(unsigned idx) const { return 0x0 == (idx & 0x3); }
bool is_xor_index(unsigned idx) const { return 0x1 == (idx & 0x3); }
bool is_pb_index(unsigned idx) const { return 0x3 == (idx & 0x3); }
card& index2card(unsigned idx) const { SASSERT(is_card_index(idx)); return *m_cards[idx >> 2]; }
xor& index2xor(unsigned idx) const { SASSERT(!is_card_index(idx)); return *m_xors[idx >> 2]; }
xor& index2xor(unsigned idx) const { SASSERT(is_xor_index(idx)); return *m_xors[idx >> 2]; }
pb& index2pb(unsigned idx) const { SASSERT(is_pb_index(idx)); return *m_pbs[idx >> 2]; }
@ -285,9 +288,9 @@ namespace sat {
bool validate_resolvent();
void display(std::ostream& out, ineq& p) const;
void display(std::ostream& out, card& c, bool values) const;
void display(std::ostream& out, pb& p, bool values) const;
void display(std::ostream& out, xor& c, bool values) const;
void display(std::ostream& out, card const& c, bool values) const;
void display(std::ostream& out, pb const& p, bool values) const;
void display(std::ostream& out, xor const& c, bool values) const;
void display_watch(std::ostream& out, bool_var v) const;
void display_watch(std::ostream& out, bool_var v, bool sign) const;