solidity/test/libsolidity/smtCheckerTests/operators/bitwise_and_fixed_bytes.sol

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contract C {
function f() public pure {
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assert(bytes1("") & ("") == bytes1(0)); // should hold
assert(bytes1(0xAA) & bytes1(0x55) == bytes1(0)); // should hold
assert(bytes1(0xFF) & bytes1(0xAA) == bytes1(0xAA)); // should hold
assert(bytes1(0xFF) & bytes1(0xAA) == bytes1(0)); // should fail
}
}
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// ====
// SMTEngine: all
// ----
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// Warning 6328: (237-285): CHC: Assertion violation happens here.\nCounterexample:\n\n\nTransaction trace:\nC.constructor()\nC.f()