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			61 lines
		
	
	
		
			1.4 KiB
		
	
	
	
		
			Solidity
		
	
	
	
	
	
			
		
		
	
	
			61 lines
		
	
	
		
			1.4 KiB
		
	
	
	
		
			Solidity
		
	
	
	
	
	
| contract C {
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| 	uint[] a;
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| 	uint[][] b;
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| 	function p() public { a.push(); }
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| 	function q() public { b.push().push(); }
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| 	function f(uint x, uint v) public {
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| 		require(x < a.length);
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| 		a[x] = v;
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| 		delete a;
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| 		assert(a.length == 0);
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| 	}
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|  	function g(uint x, uint y, uint v) public {
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| 		require(x < b.length);
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| 		require(y < b[x].length);
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| 		b[x][y] = v;
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| 		delete b;
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| 		assert(b.length == 0);
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| 	}
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|  	function h(uint x, uint y, uint v) public {
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| 		require(x < b.length);
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| 		require(y < b[x].length);
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| 		b[x][y] = v;
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| 		delete b[x];
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| 		assert(b[x].length == 0);
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| 	}
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|  	function i(uint x, uint y, uint v) public {
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| 		require(x < b.length);
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| 		require(y < b[x].length);
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| 		b[x][y] = v;
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| 		require(y < b.length);
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| 		delete b[y];
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| 		assert(b[y].length == 0);
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| 	}
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|  	function j(uint x, uint y, uint z, uint v) public {
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| 		require(x < b.length);
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| 		require(y < b[x].length);
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| 		b[x][y] = v;
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| 		require(z < b.length);
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| 		delete b[z];
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| 		// Not necessarily the case.
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| 		require(y < b.length);
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| 		require(x < b[x].length);
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| 		// Disabled because of Spacer nondeterminism.
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| 		//assert(b[y][x] == 0);
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| 	}
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| 	function setA(uint x, uint y) public {
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| 		require(x < a.length);
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| 		a[x] = y;
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| 	}
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| 	function setB(uint x, uint y, uint z) public {
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| 		require(x < b.length);
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| 		require(y < b[x].length);
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| 		b[x][y] = z;
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| 	}
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| }
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| // ====
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| // SMTEngine: all
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| // SMTIgnoreCex: yes
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| // ----
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| // Info 1391: CHC: 27 verification condition(s) proved safe! Enable the model checker option "show proved safe" to see all of them.
 |