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Semantics and Verification of Software Lecture 3: Operational Semantics of WHILE II
 

Summary: Semantics and Verification of Software
Lecture 3: Operational Semantics of WHILE II
(Execution of Statements)
Thomas Noll
Lehrstuhl f¨ur Informatik 2
(Software Modeling and Verification)
RWTH Aachen University
noll@cs.rwth-aachen.de
http://www-i2.informatik.rwth-aachen.de/i2/svsw10/
Summer Semester 2010
Outline
1 Repetition: Evaluation Relations
2 Execution of Statements
3 Determinism of Evaluation/Execution
Semantics and Verification of Software Summer Semester 2010 2
Evaluation of Arithmetic Expressions
Remember: a ::= z | x | a1+a2 | a1-a2 | a1*a2 AExp
Definition (Evaluation relation for arithmetic expressions)
If a AExp and , then a, is called a configuration.
Expression a evaluates to z Z in state (notation: a, z) if this

  

Source: Ábrahám, Erika - Fachgruppe Informatik, Rheinisch Westfälische Technische Hochschule Aachen (RWTH)

 

Collections: Computer Technologies and Information Sciences