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Program Loop Unwinding in the 2LS Framework
 Nečas, František ; Vojnar, Tomáš (oponent) ; Malík, Viktor (vedoucí práce)
The goal of this work is to propose an improved unwinding mechanism for the 2LS formal verification tool. 2LS is a static analysis framework for C programs based on reasoning about programs using an SMT solver. It combines multiple common verification techniques into an algorithm called k I k I. One of the crucial parts of the algorithm is loop unwinding. Unfortunately, the existing solution does not correctly support unwinding of loops containing operations with dynamically allocated memory. Our proposed solution is based on unwinding loops in a GOTO program rather than the SSA form, making it possible to correctly handle dynamic objects and operations over them. The proposed solution has been implemented in the 2LS framework and our experiments on a set of benchmarks from the International Competition on Software Verification (SV-COMP) show that it improves soundness of analysis of programs working with dynamic objects.
Úplný záznam
Program Loop Unwinding in the 2LS Framework
 Nečas, František ; Vojnar, Tomáš (oponent) ; Malík, Viktor (vedoucí práce)
The goal of this work is to propose an improved unwinding mechanism for the 2LS formal verification tool. 2LS is a static analysis framework for C programs based on reasoning about programs using an SMT solver. It combines multiple common verification techniques into an algorithm called k I k I. One of the crucial parts of the algorithm is loop unwinding. Unfortunately, the existing solution does not correctly support unwinding of loops containing operations with dynamically allocated memory. Our proposed solution is based on unwinding loops in a GOTO program rather than the SSA form, making it possible to correctly handle dynamic objects and operations over them. The proposed solution has been implemented in the 2LS framework and our experiments on a set of benchmarks from the International Competition on Software Verification (SV-COMP) show that it improves soundness of analysis of programs working with dynamic objects.
Úplný záznam

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