2008 | OriginalPaper | Buchkapitel
Abductive Inference for Reasoning about Heaps
verfasst von : Dino Distefano
Erschienen in: Programming Languages and Systems
Verlag: Springer Berlin Heidelberg
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The driving force behind Space Invader [1,2,3] - an automatic tool aiming to perform accurate static analysis of programs using pointers - is the idea of local reasoning, which is enabled by the Frame Rule of separation logic [4]:
$$\frac{\{P\} C \{Q \}}{\{P * R \} C \{ Q* R \}} $$
In this rule
R
is the
frame
, i.e., the part of the heap which is not touched by the execution of the command
C
. The Frame Rule allows pre and postconditions to concentrate on the footprint: the cells touched by command
C
.