Release CBMC 6.7.0

CHANGELOG

@@ -1,3 +1,34 @@
+# CBMC 6.7.0
+
+This release adds aarch64 va_list support (via #8572), which makes all tests
+pass on aarch64 Linux. We reworked expression simplification during symbolic
+execution (via #8642, #8647, #8627) to produce smaller and quicker-to-solve
+formulae for scenarios seen by our users.
+
+## What's Changed
+* Change the "no assigns..." and "no decreases..." warnings to higher verbosity by @rod-chapman in https://github.com/diffblue/cbmc/pull/8655
+* Add aarch64 (Arm 64-bit) CI job by @tautschnig in https://github.com/diffblue/cbmc/pull/8572
+
+## Bug Fixes
+* fix shell quoting by @kroening in https://github.com/diffblue/cbmc/pull/8641
+* goto-checker no longer depends on cbmc by @tautschnig in https://github.com/diffblue/cbmc/pull/8644
+* Use `std::size_t` by @kroening in https://github.com/diffblue/cbmc/pull/8648
+* `run(..., std::ostream &, ...)` with pipe by @kroening in https://github.com/diffblue/cbmc/pull/8650
+* Simplify quantified expressions over constants by @tautschnig in https://github.com/diffblue/cbmc/pull/8608
+* CI: use Visual Studio 2025 runners instead of 2019 by @tautschnig in https://github.com/diffblue/cbmc/pull/8660
+* Cleanup type conversions in java_bytecode_parsert::read by @tautschnig in https://github.com/diffblue/cbmc/pull/8584
+* Avoid need for preprocessor calls with -m64 by @tautschnig in https://github.com/diffblue/cbmc/pull/8658
+* fixup! fix exprt::opX accesses in linker_script_merge by @tautschnig in https://github.com/diffblue/cbmc/pull/8657
+* Introduce value-set supported simplifier for goto-symex by @tautschnig in https://github.com/diffblue/cbmc/pull/8642
+* Value set: lift offset from numeric constants to expressions by @tautschnig in https://github.com/diffblue/cbmc/pull/8647
+* goto-analyzer: support typecasts as left-hand sides by @tautschnig in https://github.com/diffblue/cbmc/pull/8659
+* Move unwindset.{h,cpp} to goto-programs by @tautschnig in https://github.com/diffblue/cbmc/pull/8645
+* Deprecate make_and in favour of conjunction(expr, expr) by @tautschnig in https://github.com/diffblue/cbmc/pull/8450
+* Simplify multiple-of-element size access to arrays by @tautschnig in https://github.com/diffblue/cbmc/pull/8627
+* Fix statement-expression expansion for Kani-provided quantifiers by @tautschnig in https://github.com/diffblue/cbmc/pull/8649
+
+**Full Changelog**: https://github.com/diffblue/cbmc/compare/cbmc-6.6.0...cbmc-6.7.0
+
 # CBMC 6.6.0
 
 This release adds C17 and C23 support to our C front-end (via #8620, #8623). We

src/config.inc

@@ -47,7 +47,7 @@ endif
 OSX_IDENTITY="Developer ID Application: Daniel Kroening"
 
 # Detailed version information
-CBMC_VERSION = 6.6.0
+CBMC_VERSION = 6.7.0
 
 # Use the CUDD library for BDDs, can be installed using `make -C src cudd-download`
 # CUDD = ../../cudd-3.0.0

src/libcprover-rust/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "libcprover_rust"
-version = "6.6.0"
+version = "6.7.0"
 edition = "2021"
 description = "Rust API for CBMC and assorted CProver tools"
 repository = "https://github.com/diffblue/cbmc"

src/pointer-analysis/value_set.cpp

@@ -356,21 +356,6 @@ bool value_sett::eval_pointer_offset(
         return false;
       else
       {
-        // This branch should not be reached as any constant offset will have
-        // been used before already. The following code will trigger
-        // `eval_pointer_offset`, yet we wouldn't end up in this branch:
-        // struct S { int a; char b; };
-        //
-        // int main()
-        // {
-        //   struct S s;
-        //   int offset;
-        //   __CPROVER_assume(offset >= 0 && offset <= 1 && offset % 2 == 0);
-        //   int *p = (char*)&s + offset;
-        //   int x = *p;
-        //   __CPROVER_assert(s.a == x, "");
-        // }
-        UNREACHABLE;
         const exprt &object=object_numbering[it->first];
         auto ptr_offset = compute_pointer_offset(object, ns);