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running updates to bv_solver (#4674)

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

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* dbg

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* bv

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* drat and fresh

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* move ackerman functionality

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* na

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* debugability

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* towards debugability

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* missing file

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* na

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* remove csp

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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Nikolaj Bjorner 2020-09-07 20:35:32 -07:00 • committed by GitHub
parent 4d1a2a2784
commit d02b0cde7a
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63 changed files with 3060 additions and 3095 deletions
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86
src/sat/dimacs.h
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@ -15,6 +15,9 @@ Author:
Revision History:
Nikolaj Bjorner (nbjorner) 2020-09-07
Add parser to consume extended DRAT format.
--*/
#pragma once
@ -22,4 +25,87 @@ Revision History:
bool parse_dimacs(std::istream & s, std::ostream& err, sat::solver & solver);
namespace dimacs {
struct lex_error {};
class stream_buffer {
std::istream & m_stream;
int m_val;
unsigned m_line;
public:
stream_buffer(std::istream & s):
m_stream(s),
m_line(0) {
m_val = m_stream.get();
}
int operator *() const {
return m_val;
}
void operator ++() {
m_val = m_stream.get();
if (m_val == '\n') ++m_line;
}
unsigned line() const { return m_line; }
};
struct drat_record {
enum tag_t { is_clause, is_node, is_bool_def };
tag_t m_tag;
// a clause populates m_lits and m_status
// a node populates m_node_id, m_name, m_args
// a bool def populates m_node_id and one element in m_args
sat::literal_vector m_lits;
sat::status m_status;
unsigned m_node_id;
std::string m_name;
unsigned_vector m_args;
drat_record():
m_tag(is_clause),
m_status(sat::status::redundant())
{}
};
std::ostream& operator<<(std::ostream& out, drat_record const& r);
class drat_parser {
dimacs::stream_buffer in;
std::ostream& err;
drat_record m_record;
std::function<int(char const*)> m_read_theory_id;
svector<char> m_buffer;
char const* parse_sexpr();
char const* parse_identifier();
int read_theory_id();
bool next();
public:
drat_parser(std::istream & _in, std::ostream& err):
in(_in), err(err)
{}
class iterator {
drat_parser& p;
bool m_eof;
public:
iterator(drat_parser& p, bool is_eof):p(p), m_eof(is_eof) { if (!m_eof) m_eof = !p.next(); }
drat_record const& operator*() { return p.m_record; }
iterator& operator++() { if (!p.next()) m_eof = true; return *this;}
bool operator==(iterator const& other) const { return m_eof == other.m_eof; }
bool operator!=(iterator const& other) const { return m_eof != other.m_eof; }
};
iterator begin() { return iterator(*this, false); };
iterator end() { return iterator(*this, true); }
void set_read_theory(std::function<int(char const*)>& r) { m_read_theory_id = r; }
};
};