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In [[computer science]], '''symbolic execution '''(also '''symbolic evaluation''' or '''symbex''') is a means of [[Program analysis|analyzing a program]] to determine what [[Input (computer science)|inputs]] cause each part of a program to [[Execution (computing)|execute]]. An [[Interpreter (computing)|interpreter]] follows the program, assuming symbolic values for inputs rather than obtaining actual inputs as normal execution of the program would. It thus arrives at expressions in terms of those symbols for expressions and variables in the program, and constraints in terms of those symbols for the possible outcomes of each conditional branch.
The field of [[symbolic simulation]] applies the same concept to hardware. [[Symbolic computation]] applies the concept to the analysis of mathematical expressions.
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