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Implement Z3_optimize_translate for context translation (#8072)

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* Initial plan

* Implement Z3_optimize_translate functionality

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

* Fix compilation errors and add tests for optimize translate

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

* Revert changes to opt_solver.cpp as requested

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
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Copilot 2025-12-13 05:12:08 +00:00 • committed by GitHub
parent f917005ee1
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52
src/opt/opt_context.cpp
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@ -20,6 +20,7 @@ Notes:
#include "util/gparams.h"
#include "ast/for_each_expr.h"
#include "ast/ast_pp.h"
#include "ast/ast_translation.h"
#include "ast/bv_decl_plugin.h"
#include "ast/pb_decl_plugin.h"
#include "ast/ast_smt_pp.h"
@ -155,6 +156,57 @@ namespace opt {
reset_maxsmts();
}
context* context::translate(ast_manager& target_m) {
// Create AST translator
ast_translation translator(m, target_m);
// Create new context in target manager
context* result = alloc(context, target_m);
// Copy parameters
result->updt_params(m_params);
// Set logic
if (m_logic != symbol::null) {
result->set_logic(m_logic);
}
// Translate hard constraints from scoped state
for (expr* e : m_scoped_state.m_hard) {
result->add_hard_constraint(translator(e));
}
// Translate objectives
for (auto const& obj : m_scoped_state.m_objectives) {
if (obj.m_type == O_MAXIMIZE || obj.m_type == O_MINIMIZE) {
// Translate maximize/minimize objectives
app_ref translated_term(to_app(translator(obj.m_term.get())), target_m);
result->add_objective(translated_term, obj.m_type == O_MAXIMIZE);
}
else if (obj.m_type == O_MAXSMT) {
// Translate soft constraints for MaxSMT objectives
for (unsigned i = 0; i < obj.m_terms.size(); ++i) {
result->add_soft_constraint(
translator(obj.m_terms.get(i)),
obj.m_weights[i],
obj.m_id
);
}
}
}
// Copy configuration flags
result->m_enable_sat = m_enable_sat;
result->m_enable_sls = m_enable_sls;
result->m_is_clausal = m_is_clausal;
result->m_pp_neat = m_pp_neat;
result->m_pp_wcnf = m_pp_wcnf;
result->m_incremental = m_incremental;
result->m_maxsat_engine = m_maxsat_engine;
return result;
}
void context::reset_maxsmts() {
for (auto& kv : m_maxsmts) {
dealloc(kv.m_value);