CBMC crash during lowering of byte_update expression originating from memcpy()

[andreast271]

CBMC version: 5.12 (cbmc-5.12-51-g051911e31)
Operating system: Linux x86_64
Exact command line resulting in the issue: cbmc memcopycrash.c
What behaviour did you expect: program finished successfully
What happened instead: Invariant check failed

Source file memcopycrash.c:

#include <assert.h>
void *memcpy();

struct offsetE
{
  char H;
  char V;
};

struct comp_t
{
  struct offsetE offsets[2];
  unsigned m_size[2];
};

int main(void)
{
  struct comp_t comp;
  struct offsetE T8[2] =
    {
      {((char)1),((char)1)},{((char)0),((char)1)}
    };
  (void)memcpy((char *)&(comp.offsets), (char *)&T8, 4);
  assert(comp.m_size[0] == 8);
  return 0;
}

Backtrace is attached.
backtrace.log

[tautschnig]

This was fixed by the changes in #5390.