solidity/test/libsolidity/smtCheckerTests/functions/functions_external_1.sol

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pragma experimental SMTChecker;
abstract contract D
{
function g(uint x) public virtual;
}
contract C
{
uint x;
function f(uint y, D d) public {
require(x == y);
assert(x == y);
d.g(y);
// Storage knowledge is cleared after an external call.
assert(x == y);
}
}
// ----
// Warning: (257-271): Assertion violation happens here