Refine symex pointer unsoundness #8780
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tautschnig
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## develop #8780 +/- ##
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Coverage 79.93% 79.93%
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Files 1698 1698
Lines 187698 187708 +10
Branches 73 73
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+ Hits 150034 150050 +16
+ Misses 37664 37658 -6 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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We cannot soundly handle pointer offsets that are shared across threads, and will reject this in future to avoid unsound verification results. Here, however, the pointer offsets are not actually shared, so we can safely mark them `__CPROVER_thread_local`.
…ed pointers Reading and writing pointers is not not itself unsound, only the interaction with value sets may cause unsound results. Hence, do not reject programs that never dereference a shared pointer. Fixes: diffblue#8714 Fixes: diffblue#7957
Shared pointers may be updated in yet-to-be-executed threads.
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Fixes: #8714
Fixes: #7957