mirror of https://github.com/ConsenSys/mythril
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from mythril.laser.smt import Solver, symbol_factory, UGT, UGE, ULT, ULE |
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import z3 |
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import pytest |
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import operator |
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@pytest.mark.parametrize( |
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"operation,expected", |
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[ |
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(operator.add, z3.unsat), |
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(operator.sub, z3.unsat), |
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(operator.and_, z3.sat), |
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(operator.or_, z3.sat), |
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(operator.xor, z3.unsat), |
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], |
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) |
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def test_bitvecfunc_arithmetic(operation, expected): |
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# Arrange |
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s = Solver() |
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input_ = symbol_factory.BitVecVal(1, 8) |
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bvf = symbol_factory.BitVecFuncSym("bvf", "sha3", 256, input_=input_) |
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x = symbol_factory.BitVecSym("x", 256) |
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y = symbol_factory.BitVecSym("y", 256) |
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# Act |
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s.add(x != y) |
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s.add(operation(bvf, x) == operation(y, bvf)) |
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# Assert |
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assert s.check() == expected |
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@pytest.mark.parametrize( |
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"operation,expected", |
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[ |
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(operator.eq, z3.sat), |
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(operator.ne, z3.unsat), |
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(operator.lt, z3.unsat), |
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(operator.le, z3.sat), |
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(operator.gt, z3.unsat), |
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(operator.ge, z3.sat), |
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(UGT, z3.unsat), |
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(UGE, z3.sat), |
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(ULT, z3.unsat), |
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(ULE, z3.sat), |
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], |
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) |
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def test_bitvecfunc_bitvecfunc_comparison(operation, expected): |
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# Arrange |
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s = Solver() |
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input1 = symbol_factory.BitVecSym("input1", 256) |
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input2 = symbol_factory.BitVecSym("input2", 256) |
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bvf1 = symbol_factory.BitVecFuncSym("bvf1", "sha3", 256, input_=input1) |
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bvf2 = symbol_factory.BitVecFuncSym("bvf2", "sha3", 256, input_=input2) |
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# Act |
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s.add(operation(bvf1, bvf2)) |
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s.add(input1 == input2) |
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# Assert |
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assert s.check() == expected |
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def test_bitvecfunc_bitvecfuncval_comparison(): |
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# Arrange |
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s = Solver() |
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input1 = symbol_factory.BitVecSym("input1", 256) |
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input2 = symbol_factory.BitVecVal(1337, 256) |
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bvf1 = symbol_factory.BitVecFuncSym("bvf1", "sha3", 256, input_=input1) |
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bvf2 = symbol_factory.BitVecFuncVal(12345678910, "sha3", 256, input_=input2) |
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# Act |
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s.add(bvf1 == bvf2) |
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# Assert |
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assert s.check() == z3.sat |
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assert s.model().eval(input2.raw) == 1337 |
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def test_bitvecfunc_nested_comparison(): |
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# arrange |
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s = Solver() |
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input1 = symbol_factory.BitVecSym("input1", 256) |
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input2 = symbol_factory.BitVecSym("input2", 256) |
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bvf1 = symbol_factory.BitVecFuncSym("bvf1", "sha3", 256, input_=input1) |
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bvf2 = symbol_factory.BitVecFuncSym("bvf2", "sha3", 256, input_=bvf1) |
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bvf3 = symbol_factory.BitVecFuncSym("bvf3", "sha3", 256, input_=input2) |
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bvf4 = symbol_factory.BitVecFuncSym("bvf4", "sha3", 256, input_=bvf3) |
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# Act |
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s.add(input1 == input2) |
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s.add(bvf2 == bvf4) |
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# Assert |
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assert s.check() == z3.sat |
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def test_bitvecfunc_unequal_nested_comparison(): |
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# arrange |
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s = Solver() |
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input1 = symbol_factory.BitVecSym("input1", 256) |
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input2 = symbol_factory.BitVecSym("input2", 256) |
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bvf1 = symbol_factory.BitVecFuncSym("bvf1", "sha3", 256, input_=input1) |
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bvf2 = symbol_factory.BitVecFuncSym("bvf2", "sha3", 256, input_=bvf1) |
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bvf3 = symbol_factory.BitVecFuncSym("bvf3", "sha3", 256, input_=input2) |
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bvf4 = symbol_factory.BitVecFuncSym("bvf4", "sha3", 256, input_=bvf3) |
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# Act |
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s.add(input1 != input2) |
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s.add(bvf2 == bvf4) |
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# Assert |
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assert s.check() == z3.unsat |
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def test_bitvecfunc_ext_nested_comparison(): |
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# arrange |
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s = Solver() |
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input1 = symbol_factory.BitVecSym("input1", 256) |
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input2 = symbol_factory.BitVecSym("input2", 256) |
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input3 = symbol_factory.BitVecSym("input3", 256) |
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input4 = symbol_factory.BitVecSym("input4", 256) |
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bvf1 = symbol_factory.BitVecFuncSym("bvf1", "sha3", 256, input_=input1) |
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bvf2 = symbol_factory.BitVecFuncSym("bvf2", "sha3", 256, input_=bvf1 + input3) |
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bvf3 = symbol_factory.BitVecFuncSym("bvf3", "sha3", 256, input_=input2) |
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bvf4 = symbol_factory.BitVecFuncSym("bvf4", "sha3", 256, input_=bvf3 + input4) |
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# Act |
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s.add(input1 == input2) |
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s.add(input3 == input4) |
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s.add(bvf2 == bvf4) |
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# Assert |
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assert s.check() == z3.sat |
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def test_bitvecfunc_ext_unequal_nested_comparison(): |
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# Arrange |
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s = Solver() |
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input1 = symbol_factory.BitVecSym("input1", 256) |
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input2 = symbol_factory.BitVecSym("input2", 256) |
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input3 = symbol_factory.BitVecSym("input3", 256) |
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input4 = symbol_factory.BitVecSym("input4", 256) |
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bvf1 = symbol_factory.BitVecFuncSym("bvf1", "sha3", 256, input_=input1) |
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bvf2 = symbol_factory.BitVecFuncSym("bvf2", "sha3", 256, input_=bvf1 + input3) |
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bvf3 = symbol_factory.BitVecFuncSym("bvf3", "sha3", 256, input_=input2) |
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bvf4 = symbol_factory.BitVecFuncSym("bvf4", "sha3", 256, input_=bvf3 + input4) |
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# Act |
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s.add(input1 == input2) |
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s.add(input3 != input4) |
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s.add(bvf2 == bvf4) |
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# Assert |
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assert s.check() == z3.unsat |
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def test_bitvecfunc_ext_unequal_nested_comparison_f(): |
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# Arrange |
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s = Solver() |
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input1 = symbol_factory.BitVecSym("input1", 256) |
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input2 = symbol_factory.BitVecSym("input2", 256) |
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input3 = symbol_factory.BitVecSym("input3", 256) |
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input4 = symbol_factory.BitVecSym("input4", 256) |
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bvf1 = symbol_factory.BitVecFuncSym("bvf1", "sha3", 256, input_=input1) |
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bvf2 = symbol_factory.BitVecFuncSym("bvf2", "sha3", 256, input_=bvf1 + input3) |
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bvf3 = symbol_factory.BitVecFuncSym("bvf3", "sha3", 256, input_=input2) |
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bvf4 = symbol_factory.BitVecFuncSym("bvf4", "sha3", 256, input_=bvf3 + input4) |
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# Act |
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s.add(input1 != input2) |
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s.add(input3 == input4) |
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s.add(bvf2 == bvf4) |
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# Assert |
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assert s.check() == z3.unsat |
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def test_bitvecfunc_find_input(): |
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# Arrange |
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s = Solver() |
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input1 = symbol_factory.BitVecSym("input1", 256) |
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input2 = symbol_factory.BitVecSym("input2", 256) |
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bvf1 = symbol_factory.BitVecFuncSym("bvf1", "sha3", 256, input_=input1) |
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bvf2 = symbol_factory.BitVecFuncSym("bvf3", "sha3", 256, input_=input2) |
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# Act |
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s.add(input1 == symbol_factory.BitVecVal(1, 256)) |
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s.add(bvf1 == bvf2) |
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# Assert |
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assert s.check() == z3.sat |
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assert s.model()[input2.raw] == 1 |
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def test_bitvecfunc_nested_find_input(): |
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# Arrange |
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s = Solver() |
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input1 = symbol_factory.BitVecSym("input1", 256) |
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input2 = symbol_factory.BitVecSym("input2", 256) |
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bvf1 = symbol_factory.BitVecFuncSym("bvf1", "sha3", 256, input_=input1) |
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bvf2 = symbol_factory.BitVecFuncSym("bvf2", "sha3", 256, input_=bvf1) |
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bvf3 = symbol_factory.BitVecFuncSym("bvf3", "sha3", 256, input_=input2) |
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bvf4 = symbol_factory.BitVecFuncSym("bvf4", "sha3", 256, input_=bvf3) |
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# Act |
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s.add(input1 == symbol_factory.BitVecVal(123, 256)) |
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s.add(bvf2 == bvf4) |
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# Assert |
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assert s.check() == z3.sat |
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assert s.model()[input2.raw] == 123 |
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