mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-23 17:15:31 +00:00
Code Activity

start wcnf

Browse source 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-02-26 11:13:44 -08:00
parent be68456c06
commit 08f55f9d1f
5 changed files with 30 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

21
src/opt/opt_context.cpp
View file

@ -1550,6 +1550,27 @@ namespace opt {
return to_string(true, m_hard_constraints, m_objectives);
}
std::string context::to_wcnf() {
import_scoped_state();
expr_ref_vector asms(m);
normalize(asms);
auto const& objectives = m_objectives;
if (objectives.size() > 1)
throw default_exception("only single objective weighted MaxSAT wcnf output is supported");
if (objectives.size() == 1) {
auto const& obj = objectives[0];
if (obj.m_type != O_MAXSMT)
throw default_exception("only single objective weighted MaxSAT wcnf output is supported");
for (unsigned j = 0; j < obj.m_terms.size(); ++j) {
rational w = obj.m_weights[j];
if (!w.is_unsigned())
throw default_exception("only single objective weighted MaxSAT wcnf output is supported");
}
}
NOT_IMPLEMENTED_YET();
return std::string("");
}
std::string context::to_string(bool is_internal, expr_ref_vector const& hard, vector<objective> const& objectives) const {
smt2_pp_environment_dbg env(m);
ast_pp_util visitor(m);

2
src/opt/opt_context.h
View file

@ -322,7 +322,7 @@ namespace opt {
std::string to_string(bool is_internal, expr_ref_vector const& hard, vector<objective> const& objectives) const;
std::string to_string_internal() const;
std::string to_wcnf();
void validate_lex();
void validate_maxsat(symbol const& id);