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368f3c3ed6
Organizing the PR a bit: we hook up the subtheories to TheoryFf we expose FF-related things via the C++/Pytohn API and SMT-LIB2 interface. we add a bunch of tests against these interfaces.
60 lines
1.5 KiB
Python
60 lines
1.5 KiB
Python
###############################################################################
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# Top contributors (to current version):
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# Andrew Reynolds, Alex Ozdemir
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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) 2009-2022 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 test for cvc5's finite field solver.
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#
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##
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import cvc5
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from cvc5 import Kind
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if __name__ == "__main__":
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slv = cvc5.Solver()
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slv.setOption("produce-models", "true")
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F = slv.mkFiniteFieldSort("5")
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a = slv.mkConst(F, "a")
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b = slv.mkConst(F, "b")
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inv = slv.mkTerm(
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Kind.EQUAL,
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slv.mkTerm(Kind.FINITE_FIELD_MULT, a, b),
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slv.mkFiniteFieldElem("1", F),
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)
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aIsTwo = slv.mkTerm(
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Kind.EQUAL,
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a,
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slv.mkFiniteFieldElem("2", F),
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)
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# ab - 1 = 0
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slv.assertFormula(inv)
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# a = 2
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slv.assertFormula(aIsTwo)
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r = slv.checkSat()
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# should be SAT, with b = 2^(-1)
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assert r.isSat()
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print(slv.getValue(a).toPythonObj())
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assert slv.getValue(b).toPythonObj() == -2
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bIsTwo = slv.mkTerm(
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Kind.EQUAL,
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b,
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slv.mkFiniteFieldElem("2", F),
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)
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# b = 2
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slv.assertFormula(bIsTwo)
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r = slv.checkSat()
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# should be UNSAT, since 2*2 - 1 != 0
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assert not r.isSat()
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