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#!/usr/bin/env python
###############################################################################
# Top contributors (to current version):
# Makai Mann, Aina Niemetz
#
# This file is part of the cvc5 project.
#
# Copyright (c) 2009-2021 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.
# #############################################################################
#
# A simple demonstration of the solving capabilities of the cvc5 bit-vector
# solver through the Python API. This is a direct translation of
# extract-new.cpp.
##
from pycvc5 import Solver
from pycvc5.kinds import BVExtract, Equal
if __name__ == "__main__":
slv = Solver()
slv.setLogic("QF_BV")
bitvector32 = slv.mkBitVectorSort(32)
x = slv.mkConst(bitvector32, "a")
ext_31_1 = slv.mkOp(BVExtract, 31, 1)
x_31_1 = slv.mkTerm(ext_31_1, x)
ext_30_0 = slv.mkOp(BVExtract, 30, 0)
x_30_0 = slv.mkTerm(ext_30_0, x)
ext_31_31 = slv.mkOp(BVExtract, 31, 31)
x_31_31 = slv.mkTerm(ext_31_31, x)
ext_0_0 = slv.mkOp(BVExtract, 0, 0)
x_0_0 = slv.mkTerm(ext_0_0, x)
# test getting indices
assert ext_30_0.getIndices() == (30, 0)
eq = slv.mkTerm(Equal, x_31_1, x_30_0)
print("Asserting:", eq)
slv.assertFormula(eq)
eq2 = slv.mkTerm(Equal, x_31_31, x_0_0)
print("Check entailment assuming:", eq2)
print("Expect ENTAILED")
print("cvc5:", slv.checkEntailed(eq2))
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