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/***
* Bitwuzla: Satisfiability Modulo Theories (SMT) solver.
*
* Copyright (C) 2023 by the authors listed in the AUTHORS file at
* https://github.com/bitwuzla/bitwuzla/blob/main/AUTHORS
*
* This file is part of Bitwuzla under the MIT license. See COPYING for more
* information at https://github.com/bitwuzla/bitwuzla/blob/main/COPYING
*/
#include <bitwuzla/cpp/bitwuzla.h>
#include <cassert>
#include <iomanip>
#include <iostream>
#include <sstream>
using namespace bitwuzla;
int
main()
{
// First, create a term manager instance.
TermManager tm;
// Create a Bitwuzla options instance.
Options options;
options.set(Option::PRODUCE_MODELS, true);
// Then, create a Bitwuzla instance.
Bitwuzla bitwuzla(tm, options);
// Create some sorts.
Sort bv8 = tm.mk_bv_sort(8);
Sort bv32 = tm.mk_bv_sort(32);
Sort fp16 = tm.mk_fp_sort(5, 11);
// Create terms.
Term b = tm.mk_const(tm.mk_bool_sort(), "b");
Term bv = tm.mk_const(bv8, "bv");
Term fp = tm.mk_const(fp16, "fp");
Term rm = tm.mk_const(tm.mk_rm_sort(), "rm");
Term fun = tm.mk_const(tm.mk_fun_sort({bv8, fp16, bv32}, fp16), "fun");
Term zero = tm.mk_bv_zero(bv8);
Term ones = tm.mk_bv_ones(tm.mk_bv_sort(23));
Term z = tm.mk_var(bv8, "z");
Term q = tm.mk_var(bv8, "q");
Term lambda =
tm.mk_term(Kind::LAMBDA, {z, tm.mk_term(Kind::BV_ADD, {z, bv})});
Term fpleq = tm.mk_term(
Kind::FP_LEQ,
{tm.mk_term(Kind::APPLY,
{fun, bv, fp, tm.mk_term(Kind::BV_ZERO_EXTEND, {ones}, {9})}),
fp});
Term exists = tm.mk_term(
Kind::EXISTS,
{q, tm.mk_term(Kind::EQUAL, {zero, tm.mk_term(Kind::BV_MUL, {bv, q})})});
// Assert formulas.
bitwuzla.assert_formula(b);
bitwuzla.assert_formula(
tm.mk_term(Kind::EQUAL, {tm.mk_term(Kind::APPLY, {lambda, bv}), zero}));
bitwuzla.assert_formula(exists);
bitwuzla.assert_formula(fpleq);
// Print sort.
std::cout << "Print bit-vector sort of size 32:" << std::endl;
std::cout << "---------------------------------" << std::endl;
std::cout << "operator<<: " << bv32 << std::endl;
std::cout << "str(): " << bv32.str() << std::endl << std::endl;
// Print terms.
// Note: Hexadecimal bv output format is ignored if the value is not of size
// divisible by 4.
std::cout << "Print term:" << std::endl;
std::cout << "-----------" << std::endl;
std::cout << "operator<<: " << rm << std::endl;
std::cout << "operator<< [dec (ignored)]: " << set_bv_format(10) << rm
<< std::endl;
std::cout << "str() [bin]: " << rm.str() << std::endl;
std::cout << "str(16) [hex (ignored)]: " << rm.str(16) << std::endl
<< std::endl;
std::cout << "operator<< [bin]: " << set_bv_format(2) << zero << std::endl;
std::cout << "operator<< [dec]: " << set_bv_format(10) << zero << std::endl;
std::cout << "operator<< [hex]: " << set_bv_format(16) << zero << std::endl;
std::cout << "str() [bin]: " << zero.str() << std::endl;
std::cout << "str(10) [dec]: " << zero.str(10) << std::endl;
std::cout << "str(16) [hex]: " << zero.str(16) << std::endl << std::endl;
std::cout << "operator<< [bin]: " << set_bv_format(2) << fpleq
<< std::endl;
std::cout << "operator<< [dec]: " << set_bv_format(10) << fpleq
<< std::endl;
std::cout << "operator<< [hex (ignored)]: " << set_bv_format(16) << fpleq
<< std::endl;
std::cout << "str() [bin]: " << fpleq.str() << std::endl;
std::cout << "str(10) [dec]: " << fpleq.str(10) << std::endl;
std::cout << "str(16) [hex (ignored)]: " << fpleq.str(16) << std::endl
<< std::endl;
// Print asserted formulas.
// Note: This uses the default bit-vector output format (binary).
{
std::stringstream expected_smt2;
expected_smt2
<< "(set-logic UFBVFP)" << std::endl
<< "(declare-const b Bool)" << std::endl
<< "(declare-const bv (_ BitVec 8))" << std::endl
<< "(declare-const fp (_ FloatingPoint 5 11))" << std::endl
<< "(declare-fun fun ((_ BitVec 8) (_ FloatingPoint 5 11) (_ BitVec "
"32)) (_ FloatingPoint 5 11))"
<< std::endl
<< "(assert b)" << std::endl
<< "(assert (= ((lambda ((z (_ BitVec 8))) (bvadd z bv)) bv) "
"#b00000000))"
<< std::endl
<< "(assert (exists ((q (_ BitVec 8))) (= #b00000000 (bvmul bv q))))"
<< std::endl
<< "(assert (fp.leq (fun bv fp ((_ zero_extend 9) "
"#b11111111111111111111111)) fp))"
<< std::endl
<< "(check-sat)" << std::endl
<< "(exit)" << std::endl;
std::stringstream ss;
bitwuzla.print_formula(ss, "smt2");
assert(ss.str() == expected_smt2.str());
std::cout << "Print formula [default (binary) bv output format]:"
<< std::endl;
std::cout << "--------------------------------------------------"
<< std::endl;
std::cout << ss.str() << std::endl;
}
// Print asserted formulas using hexadecimal bit-vector output format.
{
std::stringstream expected_smt2;
expected_smt2
<< "(set-logic UFBVFP)" << std::endl
<< "(declare-const b Bool)" << std::endl
<< "(declare-const bv (_ BitVec 8))" << std::endl
<< "(declare-const fp (_ FloatingPoint 5 11))" << std::endl
<< "(declare-fun fun ((_ BitVec 8) (_ FloatingPoint 5 11) (_ BitVec "
"32)) (_ FloatingPoint 5 11))"
<< std::endl
<< "(assert b)" << std::endl
<< "(assert (= ((lambda ((z (_ BitVec 8))) (bvadd z bv)) bv) "
"#x00))"
<< std::endl
<< "(assert (exists ((q (_ BitVec 8))) (= #x00 (bvmul bv q))))"
<< std::endl
<< "(assert (fp.leq (fun bv fp ((_ zero_extend 9) "
"#b11111111111111111111111)) fp))"
<< std::endl
<< "(check-sat)" << std::endl
<< "(exit)" << std::endl;
std::stringstream ss;
// configure output stream with hexadecimal bv output format
ss << set_bv_format(16);
bitwuzla.print_formula(ss, "smt2");
assert(ss.str() == expected_smt2.str());
std::cout << "Print formula [hexadecimal bv output format]:" << std::endl;
std::cout << "---------------------------------------------" << std::endl;
std::cout << ss.str() << std::endl;
}
// Print asserted formulas using decimal bit-vector output format.
{
std::stringstream expected_smt2;
expected_smt2
<< "(set-logic UFBVFP)" << std::endl
<< "(declare-const b Bool)" << std::endl
<< "(declare-const bv (_ BitVec 8))" << std::endl
<< "(declare-const fp (_ FloatingPoint 5 11))" << std::endl
<< "(declare-fun fun ((_ BitVec 8) (_ FloatingPoint 5 11) (_ BitVec "
"32)) (_ FloatingPoint 5 11))"
<< std::endl
<< "(assert b)" << std::endl
<< "(assert (= ((lambda ((z (_ BitVec 8))) (bvadd z bv)) bv) "
"(_ bv0 8)))"
<< std::endl
<< "(assert (exists ((q (_ BitVec 8))) (= (_ bv0 8) (bvmul bv q))))"
<< std::endl
<< "(assert (fp.leq (fun bv fp ((_ zero_extend 9) "
"(_ bv8388607 23))) fp))"
<< std::endl
<< "(check-sat)" << std::endl
<< "(exit)" << std::endl;
std::stringstream ss;
// configure output stream with decimal bv output format
ss << set_bv_format(10);
bitwuzla.print_formula(ss, "smt2");
assert(ss.str() == expected_smt2.str());
std::cout << "Print formula [decimal bv output format]:" << std::endl;
std::cout << "---------------------------------------------" << std::endl;
std::cout << ss.str() << std::endl;
}
bitwuzla.check_sat();
// Print values.
std::cout << "Print value of Boolean predicate:" << std::endl
<< "---------------------------------" << std::endl;
bool fpleq_val = bitwuzla.get_value(fpleq).value<bool>();
std::string fpleq_val_str = bitwuzla.get_value(fpleq).value<std::string>();
std::cout << fpleq << ": " << std::setw(4) << fpleq_val << " [bool]"
<< std::endl
<< fpleq << ": " << std::setw(4) << fpleq_val_str
<< " [std::string]" << std::endl
<< std::endl;
std::cout << "Print value of bv const:" << std::endl
<< "------------------------" << std::endl;
std::cout << bv << ": " << std::setw(8)
<< bitwuzla.get_value(bv).value<std::string>()
<< " [std::string] (bin)" << std::endl;
std::cout << bv << ": " << std::setw(8)
<< bitwuzla.get_value(bv).value<std::string>(10)
<< " [std::string] (dec)" << std::endl;
std::cout << bv << ": " << std::setw(8)
<< bitwuzla.get_value(bv).value<std::string>(16)
<< " [std::string] (dec)" << std::endl
<< std::endl;
std::cout << "Print value of RoundingMode const:" << std::endl
<< "----------------------------------" << std::endl;
RoundingMode rm_val = bitwuzla.get_value(rm).value<RoundingMode>();
std::string rm_val_str = bitwuzla.get_value(rm).value<std::string>();
std::cout << rm << ": " << rm_val << " [RoundingMode]" << std::endl
<< rm << ": " << rm_val_str << " [std::string]" << std::endl
<< std::endl;
Term fp_val = bitwuzla.get_value(fp);
std::cout << "Print value of fp const as std::string (base ignored):"
<< std::endl
<< "------------------------------------------------------"
<< std::endl;
assert(fp_val.value<std::string>() == fp_val.value<std::string>(10));
assert(fp_val.value<std::string>() == fp_val.value<std::string>(16));
std::cout << fp << ": " << std::setw(16) << fp_val.value<std::string>()
<< " [std::string] (bin)" << std::endl;
std::cout << fp << ": " << std::setw(16) << fp_val.value<std::string>(10)
<< " [std::string] (dec [ignored])" << std::endl;
std::cout << fp << ": " << std::setw(16) << fp_val.value<std::string>(16)
<< " [std::string] (hex [ignored])" << std::endl
<< std::endl;
std::cout << "Print value of fp const as tuple of std::string:" << std::endl
<< "------------------------------------------------" << std::endl;
auto fp_val_tup =
fp_val.value<std::tuple<std::string, std::string, std::string>>();
std::cout << fp << ": (" << std::get<0>(fp_val_tup) << ", " << std::setw(5)
<< std::get<1>(fp_val_tup) << ", " << std::setw(11)
<< std::get<2>(fp_val_tup) << ")"
<< " [std::tuple<std::string, std::string, std::string>] (bin)"
<< std::endl;
fp_val_tup =
fp_val.value<std::tuple<std::string, std::string, std::string>>(10);
std::cout << fp << ": (" << std::get<0>(fp_val_tup) << ", " << std::setw(5)
<< std::get<1>(fp_val_tup) << ", " << std::setw(11)
<< std::get<2>(fp_val_tup) << ")"
<< " [std::tuple<std::string, std::string, std::string>] (dec)"
<< std::endl;
fp_val_tup =
fp_val.value<std::tuple<std::string, std::string, std::string>>(16);
std::cout << fp << ": (" << std::get<0>(fp_val_tup) << ", " << std::setw(5)
<< std::get<1>(fp_val_tup) << ", " << std::setw(11)
<< std::get<2>(fp_val_tup) << ")"
<< " [std::tuple<std::string, std::string, std::string>] (hex)"
<< std::endl;
return 0;
}
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