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49 lines
1.5 KiB
Python
49 lines
1.5 KiB
Python
#!/usr/bin/env python
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###############################################################################
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# Top contributors (to current version):
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# Makai Mann, Aina Niemetz, Andrew Reynolds
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#
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# This file is part of the cvc5 project.
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#
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# Copyright (c) 2009-2024 by the authors listed in the file AUTHORS
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# in the top-level source directory and their institutional affiliations.
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# All rights reserved. See the file COPYING in the top-level source
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# directory for licensing information.
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# #############################################################################
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#
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# A simple demonstration of the solving capabilities of the cvc5 bit-vector
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# solver through the Python API. This is a direct translation of
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# extract-new.cpp.
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##
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from cvc5 import Solver, Kind
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if __name__ == "__main__":
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slv = Solver()
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slv.setLogic("QF_BV")
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bitvector32 = slv.mkBitVectorSort(32)
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x = slv.mkConst(bitvector32, "a")
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ext_31_1 = slv.mkOp(Kind.BITVECTOR_EXTRACT, 31, 1)
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x_31_1 = slv.mkTerm(ext_31_1, x)
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ext_30_0 = slv.mkOp(Kind.BITVECTOR_EXTRACT, 30, 0)
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x_30_0 = slv.mkTerm(ext_30_0, x)
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ext_31_31 = slv.mkOp(Kind.BITVECTOR_EXTRACT, 31, 31)
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x_31_31 = slv.mkTerm(ext_31_31, x)
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ext_0_0 = slv.mkOp(Kind.BITVECTOR_EXTRACT, 0, 0)
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x_0_0 = slv.mkTerm(ext_0_0, x)
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eq = slv.mkTerm(Kind.EQUAL, x_31_1, x_30_0)
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print("Asserting:", eq)
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slv.assertFormula(eq)
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eq2 = slv.mkTerm(Kind.EQUAL, x_31_31, x_0_0)
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print("Check sat assuming:", eq2.notTerm())
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print("Expect UNSAT")
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print("cvc5:", slv.checkSatAssuming(eq2.notTerm()))
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