mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
22 lines
737 B
Solidity
22 lines
737 B
Solidity
contract C {
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uint t;
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constructor() {
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t = address(this).balance;
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}
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function f(address payable a, uint x) public {
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require(address(this).balance >= x);
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a.transfer(x);
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}
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function inv() public view {
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// If only looking at `f`, it looks like this.balance always decreases.
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// However, the edge case of a contract `selfdestruct` sending its remaining balance
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// to this contract should make the claim false (since there's no fallback/receive here).
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// Removed because current Spacer seg faults in cex generation.
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//assert(address(this).balance == t);
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}
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}
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// ====
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// SMTEngine: all
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// ----
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// Info 6002: BMC: 1 verification condition(s) proved safe! Enable the model checker option "show proved safe" to see all of them.
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