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conflict logging

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This commit is contained in:
Jakob Rath 2022-04-12 16:06:20 +02:00
parent 00fa4b3320
commit 9fa5096776
11 changed files with 210 additions and 26 deletions
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29
src/math/polysat/conflict.h
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@ -81,6 +81,22 @@ namespace polysat {
class inference_engine;
class variable_elimination_engine;
class conflict_iterator;
class inference_logger;
class inference {
public:
virtual ~inference() {}
virtual std::ostream& display(std::ostream& out) const = 0;
};
inline std::ostream& operator<<(std::ostream& out, inference const& i) { return i.display(out); }
class inference_named : public inference {
char const* m_name;
public:
inference_named(char const* name) : m_name(name) { SASSERT(name); }
std::ostream& display(std::ostream& out) const override { return out << m_name; }
};
/** Conflict state, represented as core (~negation of clause). */
class conflict {
@ -90,6 +106,8 @@ namespace polysat {
uint_set m_vars; // variable assignments used as premises
uint_set m_bail_vars;
scoped_ptr<inference_logger> m_logger;
// If this is not null_var, the conflict was due to empty viable set for this variable.
// Can be treated like "v = x" for any value x.
pvar m_conflict_var = null_var;
@ -113,6 +131,14 @@ namespace polysat {
conflict(solver& s);
~conflict();
/// Begin next conflict
void begin_conflict();
/// Log inference at the current state.
void log_inference(inference const& inf);
void log_inference(char const* name) { log_inference(inference_named(name)); }
/// Log relevant part of search state.
void log_gamma();
pvar conflict_var() const { return m_conflict_var; }
bool is_bailout() const { return m_bailout; }
@ -168,6 +194,9 @@ namespace polysat {
const_iterator begin() const;
const_iterator end() const;
uint_set const& vars() const { return m_vars; }
uint_set const& bail_vars() const { return m_bail_vars; }
std::ostream& display(std::ostream& out) const;
};