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			17 lines
		
	
	
		
			359 B
		
	
	
	
		
			Solidity
		
	
	
	
	
	
			
		
		
	
	
			17 lines
		
	
	
		
			359 B
		
	
	
	
		
			Solidity
		
	
	
	
	
	
| contract C
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| {
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| 	function f(uint8 x) public pure returns (uint) {
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| 		x = 0;
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| 		uint8 y;
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| 		unchecked { y = x - 1; }
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| 		assert(y == 255);
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| 		unchecked { y = x - 255; }
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| 		assert(y == 1);
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| 		return y;
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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 1391: CHC: 2 verification condition(s) proved safe! Enable the model checker option "show proved safe" to see all of them.
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