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/******************************************************************************
* Top contributors (to current version):
* Alex Ozdemir
*
* This file is part of the cvc5 project.
*
* Copyright (c) 2009-2025 by the authors listed in the file AUTHORS
* in the top-level source directory and their institutional affiliations.
* All rights reserved. See the file COPYING in the top-level source
* directory for licensing information.
* ****************************************************************************
*
* Black box testing of ff term parsing.
*/
#include <memory>
#include <utility>
#include "test_with_smt_parser.h"
#include "theory/ff/parse.h"
namespace cvc5::internal {
using namespace theory::ff;
namespace test {
class TestFfNodeParser : public TestWithSmtParser
{
};
TEST_F(TestFfNodeParser, bitConstraint)
{
{
doCommand("(define-sort F () (_ FiniteField 7))");
doCommand("(declare-const x F)");
EXPECT_TRUE(
parse::bitConstraint(
parseNode("(= (ff.mul x (ff.add (as ff-1 F) x)) (as ff0 F))"))
.has_value());
EXPECT_TRUE(
parse::bitConstraint(
parseNode("(= (as ff0 F) (ff.mul x (ff.add (as ff-1 F) x)))"))
.has_value());
EXPECT_TRUE(
parse::bitConstraint(parseNode("(= x (ff.mul x x))")).has_value());
EXPECT_FALSE(
parse::bitConstraint(parseNode("(= x (ff.mul x x x))")).has_value());
EXPECT_TRUE(
parse::bitConstraint(
parseNode(
"(= (as ff0 F) (ff.add (ff.mul x x) (ff.mul (as ff-1 F) x)))"))
.has_value());
EXPECT_TRUE(
parse::bitConstraint(
parseNode("(= (as ff0 F) (ff.add (ff.mul (as ff-1 F) x x) x))"))
.has_value());
EXPECT_TRUE(
parse::bitConstraint(
parseNode("(= (as ff0 F) (ff.add (ff.mul x x (as ff-1 F)) x))"))
.has_value());
EXPECT_FALSE(
parse::bitConstraint(parseNode("(= (as ff0 F) x)")).has_value());
EXPECT_FALSE(parse::bitConstraint(parseNode("(= (as ff0 F) (ff.mul x x))"))
.has_value());
}
}
TEST_F(TestFfNodeParser, linearMonomial)
{
{
doCommand("(define-sort F () (_ FiniteField 7))");
doCommand("(declare-const x F)");
doCommand("(declare-const y F)");
EXPECT_TRUE(
parse::linearMonomial(parseNode("(ff.mul x (as ff1 F))")).has_value());
EXPECT_TRUE(
parse::linearMonomial(parseNode("(ff.mul (as ff1 F) x)")).has_value());
EXPECT_TRUE(parse::linearMonomial(parseNode("x")).has_value());
EXPECT_TRUE(parse::linearMonomial(parseNode("(ff.neg x)")).has_value());
EXPECT_FALSE(parse::linearMonomial(parseNode("(ff.add x y)")).has_value());
}
}
TEST_F(TestFfNodeParser, extractLinearMonomials)
{
{
doCommand("(define-sort F () (_ FiniteField 5))");
doCommand("(declare-const x F)");
doCommand("(declare-const y F)");
doCommand("(declare-const b0 F)");
doCommand("(declare-const b1 F)");
doCommand("(declare-const b2 F)");
doCommand("(declare-const b3 F)");
Node x = parseNode("x");
Node y = parseNode("y");
Node b0 = parseNode("b0");
Node b1 = parseNode("b1");
Node b2 = parseNode("b2");
Node b3 = parseNode("b3");
{
// none
const auto res =
parse::extractLinearMonomials(parseNode("(ff.add "
"(ff.mul x y) "
"(ff.mul x y) "
"(ff.add x y) "
")"));
EXPECT_TRUE(res.has_value());
const auto& [linearMonomials, others] = res.value();
EXPECT_EQ(linearMonomials.size(), 0);
EXPECT_EQ(others.size(), 3);
}
{
// neg
const auto res =
parse::extractLinearMonomials(parseNode("(ff.add "
"(ff.mul x y) "
"(ff.neg x) "
"(ff.add x y) "
")"));
EXPECT_TRUE(res.has_value());
const auto& [linearMonomials, others] = res.value();
EXPECT_EQ(linearMonomials.size(), 1);
EXPECT_EQ(linearMonomials[0].second.toSignedInteger(), -1);
EXPECT_EQ(linearMonomials[0].first, x);
EXPECT_EQ(others.size(), 2);
}
{
// a few
const auto res =
parse::extractLinearMonomials(parseNode("(ff.add "
"(ff.mul x y) "
"(ff.mul x y) "
"(ff.mul (as ff3 F) y) "
"(ff.mul (as ff-1 F) x) "
"(ff.add x y) "
"(as ff4 F) "
")"));
EXPECT_TRUE(res.has_value());
const auto& [linearMonomials, others] = res.value();
EXPECT_EQ(linearMonomials.size(), 2);
EXPECT_EQ(others.size(), 4);
}
}
}
TEST_F(TestFfNodeParser, bitSumsSimple)
{
{
doCommand("(define-sort F () (_ FiniteField 103))");
doCommand("(declare-const x F)");
doCommand("(declare-const y F)");
doCommand("(declare-const b0 F)");
doCommand("(declare-const b1 F)");
doCommand("(declare-const b2 F)");
doCommand("(declare-const b3 F)");
Node b0 = parseNode("b0");
Node b1 = parseNode("b1");
Node b2 = parseNode("b2");
Node b3 = parseNode("b3");
std::unordered_set<Node> bits = {b0, b1, b2, b3};
{
// bitsum with implicit 1 coeff
const auto res = parse::bitSums(
parseNode("(ff.add x y b0 (ff.mul (as ff2 F) b1))"), bits);
EXPECT_TRUE(res.has_value());
const auto& [bitSums, others] = res.value();
EXPECT_EQ(bitSums.size(), 1);
EXPECT_EQ(bitSums[0].first.getValue(), 1);
EXPECT_EQ(bitSums[0].second.size(), 2);
EXPECT_EQ(bitSums[0].second[0], b0);
EXPECT_EQ(bitSums[0].second[1], b1);
EXPECT_EQ(others.size(), 2);
}
{
// bitsum with negative coeffs
const auto res = parse::bitSums(parseNode("(ff.add "
"(ff.mul x y) "
"x "
"y "
"(ff.mul (as ff-1 F) b0) "
"(ff.mul (as ff-2 F) b1) "
"(ff.mul (as ff-4 F) b2) "
")"),
bits);
EXPECT_TRUE(res.has_value());
const auto& [bitSums, others] = res.value();
EXPECT_EQ(bitSums.size(), 1);
EXPECT_EQ(bitSums[0].first.toSignedInteger(), -1);
EXPECT_EQ(bitSums[0].second.size(), 3);
EXPECT_EQ(bitSums[0].second[0], b0);
EXPECT_EQ(bitSums[0].second[1], b1);
EXPECT_EQ(bitSums[0].second[2], b2);
EXPECT_EQ(others.size(), 3);
}
{
// bitsum with negative coeffs, and a gap followed by a single bit
const auto res = parse::bitSums(
parseNode("(ff.add (ff.mul x y) x y (ff.mul (as ff-1 F) b0) (ff.mul "
"(as ff-2 F) b1) (ff.mul (as ff-8 F) b3))"),
bits);
EXPECT_TRUE(res.has_value());
const auto& [bitSums, others] = res.value();
EXPECT_EQ(bitSums.size(), 1);
EXPECT_EQ(bitSums[0].first.toSignedInteger(), -1);
EXPECT_EQ(bitSums[0].second.size(), 2);
EXPECT_EQ(bitSums[0].second[0], b0);
EXPECT_EQ(bitSums[0].second[1], b1);
EXPECT_EQ(others.size(), 4);
}
{
// bitsum with negative coeffs and a stray bit
const auto res = parse::bitSums(
parseNode("(ff.add (ff.mul x y) x y (ff.mul (as ff-1 F) b0) (ff.mul "
"(as ff-2 F) b1) (ff.mul (as ff1 F) b3))"),
bits);
EXPECT_TRUE(res.has_value());
const auto& [bitSums, others] = res.value();
EXPECT_EQ(bitSums.size(), 1);
EXPECT_EQ(bitSums[0].first.toSignedInteger(), -1);
EXPECT_EQ(bitSums[0].second.size(), 2);
EXPECT_EQ(bitSums[0].second[0], b0);
EXPECT_EQ(bitSums[0].second[1], b1);
EXPECT_EQ(others.size(), 4);
}
{
// two bitsums with a gap
const auto res = parse::bitSums(parseNode("(ff.add"
"(ff.mul x y)"
"y"
"(ff.mul (as ff1 F) b0)"
"(ff.mul (as ff2 F) b1)"
"(ff.mul (as ff4 F) x)"
"(ff.mul (as ff8 F) b2) "
"(ff.mul (as ff16 F) b3)"
")"),
bits);
EXPECT_TRUE(res.has_value());
const auto& [bitSums, others] = res.value();
EXPECT_EQ(bitSums.size(), 1);
EXPECT_EQ(bitSums[0].first.toSignedInteger(), 1);
EXPECT_EQ(bitSums[0].second.size(), 5);
EXPECT_EQ(others.size(), 2);
}
{
// bitsum with weird, positive start
const auto res = parse::bitSums(parseNode("(ff.add"
"(ff.mul (as ff6 F) b0)"
"(ff.mul (as ff12 F) b1)"
"(ff.mul (as ff24 F) b2)"
")"),
bits);
EXPECT_TRUE(res.has_value());
const auto& [bitSums, others] = res.value();
EXPECT_EQ(bitSums.size(), 1);
EXPECT_EQ(bitSums[0].first.toSignedInteger(), 6);
EXPECT_EQ(bitSums[0].second.size(), 3);
EXPECT_EQ(others.size(), 0);
}
{
// bitsum with weird, positive and negative start
const auto res = parse::bitSums(parseNode("(ff.add"
"(ff.mul (as ff6 F) b0)"
"(ff.mul (as ff12 F) b1)"
"(ff.mul (as ff-4 F) b2)"
"(ff.mul (as ff-8 F) b3)"
")"),
bits);
EXPECT_TRUE(res.has_value());
const auto& [bitSums, others] = res.value();
EXPECT_EQ(bitSums.size(), 2);
EXPECT_EQ(bitSums[0].first.toSignedInteger(), -4);
EXPECT_EQ(bitSums[0].second.size(), 2);
EXPECT_EQ(bitSums[1].first.toSignedInteger(), 6);
EXPECT_EQ(bitSums[1].second.size(), 2);
EXPECT_EQ(others.size(), 0);
}
}
}
} // namespace test
} // namespace cvc5::internal
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