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			21 lines
		
	
	
		
			852 B
		
	
	
	
		
			Solidity
		
	
	
	
	
	
			
		
		
	
	
			21 lines
		
	
	
		
			852 B
		
	
	
	
		
			Solidity
		
	
	
	
	
	
| pragma experimental SMTChecker;
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| contract C {
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| 	int[][] array2d;
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| 	function s() public returns (int[] memory) {
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| 		delete array2d.push();
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| 		assert(array2d[array2d.length - 1].length == 0);
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| 		// Fails
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| 		assert(array2d[array2d.length - 1].length != 0);
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| 		delete array2d.push().push();
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| 		uint length = array2d.length;
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| 		uint length2 = array2d[length - 1].length;
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| 		assert(array2d[length - 1][length2 - 1] == 0);
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| 		// Fails
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| 		assert(array2d[length - 1][length2 - 1] != 0);
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| 		return array2d[2];
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| 	}
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| }
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| // ----
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| // Warning 6328: (198-245): CHC: Assertion violation happens here.\nCounterexample:\narray2d = [[]]\n = []\n\nTransaction trace:\nC.constructor()\nState: array2d = []\nC.s()
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| // Warning 6328: (418-463): CHC: Assertion violation happens here.\nCounterexample:\narray2d = [[], [0]]\n = []\n\nTransaction trace:\nC.constructor()\nState: array2d = []\nC.s()
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