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z3/lib/api_solver_old.cpp
Leonardo de Moura e9eab22e5c Z3 sources 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2012-10-02 11:35:25 -07:00

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/*++
Copyright (c) 2012 Microsoft Corporation
Module Name:
api_solver_old.cpp
Abstract:
OLD API for using solvers.
This has been deprecated
Author:
Leonardo de Moura (leonardo) 2012-02-29.
Revision History:
--*/
#include<iostream>
#include"z3.h"
#include"api_log_macros.h"
#include"api_context.h"
#include"api_model.h"
#include"smt_implied_equalities.h"
#include"cancel_eh.h"
extern "C" {
void Z3_API Z3_push(Z3_context c) {
Z3_TRY;
LOG_Z3_push(c);
RESET_ERROR_CODE();
CHECK_SEARCHING(c);
mk_c(c)->push();
Z3_CATCH;
}
void Z3_API Z3_pop(Z3_context c, unsigned num_scopes) {
Z3_TRY;
LOG_Z3_pop(c, num_scopes);
RESET_ERROR_CODE();
CHECK_SEARCHING(c);
if (num_scopes > mk_c(c)->get_solver().get_scope_level()) {
SET_ERROR_CODE(Z3_IOB);
return;
}
if (num_scopes > 0) {
mk_c(c)->pop(num_scopes);
}
Z3_CATCH;
}
unsigned Z3_API Z3_get_num_scopes(Z3_context c) {
Z3_TRY;
LOG_Z3_get_num_scopes(c);
RESET_ERROR_CODE();
return mk_c(c)->get_num_scopes();
Z3_CATCH_RETURN(0);
}
void Z3_API Z3_assert_cnstr(Z3_context c, Z3_ast a) {
Z3_TRY;
LOG_Z3_assert_cnstr(c, a);
RESET_ERROR_CODE();
CHECK_FORMULA(a,);
mk_c(c)->assert_cnstr(to_expr(a));
Z3_CATCH;
}
Z3_lbool Z3_API Z3_check_and_get_model(Z3_context c, Z3_model * m) {
Z3_TRY;
LOG_Z3_check_and_get_model(c, m);
RESET_ERROR_CODE();
CHECK_SEARCHING(c);
cancel_eh<smt::solver> eh(mk_c(c)->get_solver());
api::context::set_interruptable(*(mk_c(c)), eh);
flet<bool> _model(mk_c(c)->fparams().m_model, true);
lbool result;
try {
model_ref _m;
result = mk_c(c)->check(_m);
if (m) {
if (_m) {
Z3_model_ref * m_ref = alloc(Z3_model_ref);
m_ref->m_model = _m;
// Must bump reference counter for backward compatibility reasons.
// Don't need to invoke save_object, since the counter was bumped
m_ref->inc_ref();
*m = of_model(m_ref);
}
else {
*m = 0;
}
}
}
catch (z3_exception & ex) {
mk_c(c)->handle_exception(ex);
RETURN_Z3_check_and_get_model static_cast<Z3_lbool>(l_undef);
}
RETURN_Z3_check_and_get_model static_cast<Z3_lbool>(result);
Z3_CATCH_RETURN(Z3_L_UNDEF);
}
Z3_lbool Z3_API Z3_check(Z3_context c) {
Z3_TRY;
// This is just syntax sugar...
RESET_ERROR_CODE();
CHECK_SEARCHING(c);
Z3_lbool r = Z3_check_and_get_model(c, 0);
return r;
Z3_CATCH_RETURN(Z3_L_UNDEF);
}
Z3_lbool Z3_API Z3_get_implied_equalities(Z3_context c,
unsigned num_terms,
Z3_ast const terms[],
unsigned class_ids[]) {
Z3_TRY;
LOG_Z3_get_implied_equalities(c, num_terms, terms, class_ids);
RESET_ERROR_CODE();
CHECK_SEARCHING(c);
lbool result = smt::implied_equalities(mk_c(c)->get_solver(), num_terms, to_exprs(terms), class_ids);
return static_cast<Z3_lbool>(result);
Z3_CATCH_RETURN(Z3_L_UNDEF);
}
Z3_lbool Z3_API Z3_check_assumptions(Z3_context c,
unsigned num_assumptions, Z3_ast const assumptions[],
Z3_model * m, Z3_ast* proof,
unsigned* core_size, Z3_ast core[]) {
Z3_TRY;
LOG_Z3_check_assumptions(c, num_assumptions, assumptions, m, proof, core_size, core);
RESET_ERROR_CODE();
CHECK_SEARCHING(c);
expr * const* _assumptions = to_exprs(assumptions);
flet<bool> _model(mk_c(c)->fparams().m_model, true);
cancel_eh<smt::solver> eh(mk_c(c)->get_solver());
api::context::set_interruptable(*(mk_c(c)), eh);
lbool result;
result = mk_c(c)->get_solver().check(num_assumptions, _assumptions);
if (result != l_false && m) {
model_ref _m;
mk_c(c)->get_solver().get_model(_m);
if (_m) {
Z3_model_ref * m_ref = alloc(Z3_model_ref);
m_ref->m_model = _m;
// Must bump reference counter for backward compatibility reasons.
// Don't need to invoke save_object, since the counter was bumped
m_ref->inc_ref();
*m = of_model(m_ref);
}
else {
*m = 0;
}
}
if (result == l_false && core_size) {
*core_size = mk_c(c)->get_solver().get_unsat_core_size();
if (*core_size > num_assumptions) {
SET_ERROR_CODE(Z3_INVALID_ARG);
}
for (unsigned i = 0; i < *core_size; ++i) {
core[i] = of_ast(mk_c(c)->get_solver().get_unsat_core_expr(i));
}
}
else if (core_size) {
*core_size = 0;
}
if (result == l_false && proof) {
*proof = of_ast(mk_c(c)->get_solver().get_proof());
}
else if (proof) {
*proof = 0; // breaks abstraction.
}
RETURN_Z3_check_assumptions static_cast<Z3_lbool>(result);
Z3_CATCH_RETURN(Z3_L_UNDEF);
}
Z3_search_failure Z3_API Z3_get_search_failure(Z3_context c) {
Z3_TRY;
LOG_Z3_get_search_failure(c);
RESET_ERROR_CODE();
CHECK_SEARCHING(c);
smt::failure f = mk_c(c)->get_solver().last_failure();
return api::mk_Z3_search_failure(f);
Z3_CATCH_RETURN(Z3_UNKNOWN);
}
class labeled_literal {
expr_ref m_literal;
symbol m_label;
bool m_enabled;
public:
labeled_literal(ast_manager& m, expr* l, symbol const& n) : m_literal(l,m), m_label(n), m_enabled(true) {}
labeled_literal(ast_manager& m, expr* l) : m_literal(l,m), m_label(), m_enabled(true) {}
bool is_enabled() const { return m_enabled; }
void disable() { m_enabled = false; }
symbol const& get_label() const { return m_label; }
expr* get_literal() { return m_literal.get(); }
};
typedef vector<labeled_literal> labels;
Z3_literals Z3_API Z3_get_relevant_labels(Z3_context c) {
Z3_TRY;
LOG_Z3_get_relevant_labels(c);
RESET_ERROR_CODE();
buffer<symbol> labl_syms;
ast_manager& m = mk_c(c)->m();
expr_ref_vector lits(m);
mk_c(c)->get_solver().get_relevant_labels(0, labl_syms);
mk_c(c)->get_solver().get_relevant_labeled_literals(mk_c(c)->fparams().m_at_labels_cex, lits);
labels* lbls = alloc(labels);
SASSERT(labl_syms.size() == lits.size());
for (unsigned i = 0; i < lits.size(); ++i) {
lbls->push_back(labeled_literal(m,lits[i].get(), labl_syms[i]));
}
RETURN_Z3(reinterpret_cast<Z3_literals>(lbls));
Z3_CATCH_RETURN(0);
}
Z3_literals Z3_API Z3_get_relevant_literals(Z3_context c) {
Z3_TRY;
LOG_Z3_get_relevant_literals(c);
RESET_ERROR_CODE();
ast_manager& m = mk_c(c)->m();
expr_ref_vector lits(m);
mk_c(c)->get_solver().get_relevant_literals(lits);
labels* lbls = alloc(labels);
for (unsigned i = 0; i < lits.size(); ++i) {
lbls->push_back(labeled_literal(m,lits[i].get()));
}
RETURN_Z3(reinterpret_cast<Z3_literals>(lbls));
Z3_CATCH_RETURN(0);
}
Z3_literals Z3_API Z3_get_guessed_literals(Z3_context c) {
Z3_TRY;
LOG_Z3_get_guessed_literals(c);
RESET_ERROR_CODE();
ast_manager& m = mk_c(c)->m();
expr_ref_vector lits(m);
mk_c(c)->get_solver().get_guessed_literals(lits);
labels* lbls = alloc(labels);
for (unsigned i = 0; i < lits.size(); ++i) {
lbls->push_back(labeled_literal(m,lits[i].get()));
}
RETURN_Z3(reinterpret_cast<Z3_literals>(lbls));
Z3_CATCH_RETURN(0);
}
void Z3_API Z3_del_literals(Z3_context c, Z3_literals lbls) {
Z3_TRY;
LOG_Z3_del_literals(c, lbls);
RESET_ERROR_CODE();
dealloc(reinterpret_cast<labels*>(lbls));
Z3_CATCH;
}
unsigned Z3_API Z3_get_num_literals(Z3_context c,Z3_literals lbls) {
Z3_TRY;
LOG_Z3_get_num_literals(c, lbls);
RESET_ERROR_CODE();
return reinterpret_cast<labels*>(lbls)->size();
Z3_CATCH_RETURN(0);
}
Z3_symbol Z3_API Z3_get_label_symbol(Z3_context c,Z3_literals lbls, unsigned idx) {
Z3_TRY;
LOG_Z3_get_label_symbol(c, lbls, idx);
RESET_ERROR_CODE();
return of_symbol((*reinterpret_cast<labels*>(lbls))[idx].get_label());
Z3_CATCH_RETURN(0);
}
Z3_ast Z3_API Z3_get_literal(Z3_context c,Z3_literals lbls, unsigned idx) {
Z3_TRY;
LOG_Z3_get_literal(c, lbls, idx);
RESET_ERROR_CODE();
expr* e = (*reinterpret_cast<labels*>(lbls))[idx].get_literal();
mk_c(c)->save_ast_trail(e);
RETURN_Z3(of_ast(e));
Z3_CATCH_RETURN(0);
}
void Z3_API Z3_disable_literal(Z3_context c, Z3_literals lbls, unsigned idx) {
Z3_TRY;
LOG_Z3_disable_literal(c, lbls, idx);
RESET_ERROR_CODE();
(*reinterpret_cast<labels*>(lbls))[idx].disable();
Z3_CATCH;
}
void Z3_API Z3_block_literals(Z3_context c, Z3_literals lbls) {
Z3_TRY;
LOG_Z3_block_literals(c, lbls);
RESET_ERROR_CODE();
labels* _lbls = reinterpret_cast<labels*>(lbls);
ast_manager& m = mk_c(c)->m();
expr_ref_vector lits(m);
for (unsigned i = 0; i < _lbls->size(); ++i) {
if ((*_lbls)[i].is_enabled()) {
lits.push_back(m.mk_not((*_lbls)[i].get_literal()));
}
}
expr_ref clause(m);
clause = m.mk_or(lits.size(), lits.c_ptr());
mk_c(c)->save_ast_trail(clause.get());
mk_c(c)->assert_cnstr(clause.get());
Z3_CATCH;
}
char const * Z3_API Z3_context_to_string(Z3_context c) {
Z3_TRY;
LOG_Z3_context_to_string(c);
RESET_ERROR_CODE();
std::ostringstream buffer;
mk_c(c)->get_solver().display(buffer);
return mk_c(c)->mk_external_string(buffer.str());
Z3_CATCH_RETURN(0);
}
Z3_ast Z3_API Z3_get_context_assignment(Z3_context c) {
Z3_TRY;
LOG_Z3_get_context_assignment(c);
RESET_ERROR_CODE();
ast_manager& m = mk_c(c)->m();
expr_ref result(m);
expr_ref_vector assignment(m);
mk_c(c)->get_solver().get_assignments(assignment);
result = mk_c(c)->mk_and(assignment.size(), assignment.c_ptr());
RETURN_Z3(of_ast(result.get()));
Z3_CATCH_RETURN(0);
}
Z3_string Z3_API Z3_statistics_to_string(Z3_context c) {
Z3_TRY;
LOG_Z3_statistics_to_string(c);
RESET_ERROR_CODE();
std::ostringstream buffer;
mk_c(c)->get_solver().display_statistics(buffer);
memory::display_max_usage(buffer);
return mk_c(c)->mk_external_string(buffer.str());
Z3_CATCH_RETURN(0);
}
void Z3_API Z3_soft_check_cancel(Z3_context c) {
Z3_TRY;
LOG_Z3_soft_check_cancel(c);
RESET_ERROR_CODE();
mk_c(c)->interrupt();
Z3_CATCH;
}
};
void Z3_display_statistics(Z3_context c, std::ostream& s) {
mk_c(c)->get_solver().display_statistics(s);
}
void Z3_display_istatistics(Z3_context c, std::ostream& s) {
mk_c(c)->get_solver().display_istatistics(s);
}
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