'Weakest precondition' diaporamas de présentation

Automatic Program Correction

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ECI 2007: Specification and Verification of Object-Oriented Programs

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Program Analysis as Constraint Solving

Program Analysis as Constraint Solving. Constraint Solving. Goal: Perform program analysis by solving constraints Can be used to Find invariants for program verification Compute weakest precondition/strongest postcondition Computing most general counter-examples. Why constraint-based?.

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Semantics

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Has the Bug Really Been Fixed?

Has the Bug Really Been Fixed?. Zhongxian Gu , Earl T. Barr, David J. Hamilton, Zhendong Su University of California, Davis. ICSE 2010. Zhongxian GU. Publications: Has the bug really been fixed? Zhongxian Gu , Earl T. Barr, David J, Hamilton, Zhendong Su (ICSE 2010)

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COP4020 Programming Languages

COP4020 Programming Languages. Introduction to Axiomatic Semantics Prof. Robert van Engelen. Assertions and Preconditions. Assertions are used by programmers to verify run-time execution An assertion is a logical formula to verify the state of variables and data to ensure safe continuation

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Reasoning About Code

Reasoning About Code. Reasoning about code. Determine what facts are true during execution x > 0 for all nodes n : n.next.previous == n array a is sorted x + y == z if x != null , then x.a > x.b Applications: Ensure code is correct (via reasoning or testing)

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Programs: Semantics and Verification

Programs: Semantics and Verification. Mordechai Ben-Ari Mathematical Logic for Computer Science. TexPoint fonts used in EMF. Read the TexPoint manual before you delete this box.: A A A A A. Table of Contents. Introduction Semantics of programming language Weakest precondition

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Program Analysis as Constraint Solving

Program Analysis as Constraint Solving. Ramarathnam Venkatesan (MSR Redmond). Saurabh Srivastava ( Univ. of Maryland). Sumit Gulwani (MSR Redmond). TexPoint fonts used in EMF. Read the TexPoint manual before you delete this box.: A A. Introduction.

305 views • 22 slides

Program Analysis as Constraint Solving

Program Analysis as Constraint Solving. Ramarathnam Venkatesan (MSR Redmond). Saurabh Srivastava ( Univ. of Maryland). Sumit Gulwani (MSR Redmond). TexPoint fonts used in EMF. Read the TexPoint manual before you delete this box.: A A. Introduction.

279 views • 22 slides

Well-cooked Spaghetti: Weakest-Precondition of Unstructured Programs

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Dynamic semantics

Dynamic semantics. Precisely specify the meanings of programs. Why? programmers need to understand the meanings of programs they read programmers need to understand how to express themselves in a given language

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Software Verification 1 Deductive Verification

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