Issues

• Byte update with a symbolic size at a non-zero offset into a scalar overwrites bytes beyond the size (unsound)

  diffblue/cbmc#9173 · Filter by author bardiharborow opened on Sep 29, 2026

• Byte update with a symbolic size starting mid-element never writes the following element (unsound)

  diffblue/cbmc#9172 · Filter by author bardiharborow opened on Sep 29, 2026

• Byte update with a symbolic size does not write the partially covered last array element (unsound)

  diffblue/cbmc#9171 · Filter by author bardiharborow opened on Sep 29, 2026

• Byte update with a symbolic size skips the last element when the size is a multiple of the element size (unsound)

  diffblue/cbmc#9170 · Filter by author bardiharborow opened on Sep 29, 2026

• CBMC missing an error after exiting do-while loop

  diffblue/cbmc#9169 · Filter by author mksvoboda97 opened on Sep 24, 2026

• Integer.getInteger model recurses unconditionally

  diffblue/cbmc#9168 · Filter by author lemmy opened on Sep 24, 2026

• jbmc --trace prints millions of unknown characters for nondeterministic strings

  diffblue/cbmc#9165 · Filter by author lemmy opened on Sep 18, 2026

• Invariant violation in fatal_assertions.cpp on a program with a failing pointer check and an mmap call

  diffblue/cbmc#9158 · Filter by author BowenWang opened on Sep 4, 2026

• Documentation shows loop contracts on do/while loops, but they are rejected: the documented syntax does not parse, and do/while is unsupported by goto-instrument

  diffblue/cbmc#9155 · Filter by author rcalvom opened on Aug 11, 2026

• goto-instrument --apply-loop-contracts aborts on instrument_spec_assigns.h:286 invariant when the loop write set is inferred (regression 6.3.1 → 6.6.0)

  diffblue/cbmc#9154 · Filter by author rcalvom opened on Aug 11, 2026

• crash in goto-harness (nested struct with padding)

  diffblue/cbmc#9153 · Filter by author florianschanda opened on Aug 5, 2026
  1

• please add support for some missing string functions

  diffblue/cbmc#9151 · Filter by author florianschanda opened on Aug 4, 2026

• SMT2 back-end emits ill-typed terms for flattened aggregates

  diffblue/cbmc#9146 · Filter by author fcasal opened on Aug 1, 2026

• SMT2 back-end swaps fields in flattened overflow results

  diffblue/cbmc#9144 · Filter by author fcasal opened on Aug 1, 2026

• goto-harness C output emits a spurious const on the typedef for const-qualified pointer parameters, producing non-compilable harness code

  diffblue/cbmc#9124 · Filter by author Kacha345 opened on Jul 21, 2026

• static initializer of a flexible array member is silently dropped

  diffblue/cbmc#9113 · Filter by author 71iq opened on Jul 8, 2026

• --smt2 --outfile aborts (flatten2bv: unsupported) on float↔int type-punning that native solving handles

  diffblue/cbmc#9101 · Filter by author zhoulaifu opened on Jul 3, 2026

• Re-proof of properties of the contracts library in proof of every function

  awsCode Contracts
  diffblue/cbmc#9095 · Filter by author rod-chapman opened on Jul 1, 2026

• Number and repetition of properties

  awsProperty Instrumentation
  Feature

  diffblue/cbmc#9094 · Filter by author rod-chapman opened on Jul 1, 2026
  2

• Link errors on NetBSD (undefined reference to ...)

  diffblue/cbmc#9088 · Filter by author alnsn opened on Jun 27, 2026

• goto-harness (memory snapshot): static array identifier not found

  diffblue/cbmc#9078 · Filter by author rosabot-allegro opened on Jun 22, 2026

• Inconsistent verification verdict with varying --depth value for cbmc

  diffblue/cbmc#9028 · Filter by author jyoo980 opened on Jun 5, 2026

• error: vector operator '<' not defined for types ...

  diffblue/cbmc#9002 · Filter by author gitonthescene opened on May 6, 2026

• crash and wrong smtlib logic

  diffblue/cbmc#8999 · Filter by author florianschanda opened on May 5, 2026

• Cross-platform instability arising from default signedness of char in contracts library

  awsC Front EndCode Contracts
  Bug

  diffblue/cbmc#8991 · Filter by author rod-chapman opened on Apr 28, 2026
  13