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

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contract C {
function f() public pure {
uint8 x = 1;
uint16 y = 0;
assert(x & y != 0);
x = 0xff;
y = 0xffff;
assert(x & y == 0xff);
assert(x & y == 0xffff);
assert(x & y == 0x0000);
}
}
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// ====
// SMTEngine: all
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// ----
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// Warning 6328: (74-92): CHC: Assertion violation happens here.
// Warning 6328: (147-170): CHC: Assertion violation happens here.
// Warning 6328: (174-197): CHC: Assertion violation happens here.
// Info 1391: CHC: 1 verification condition(s) proved safe! Enable the model checker option "show proved safe" to see all of them.