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Description
CBMC version: 5.10 a1e86d3
Operating system: any
Exact command line resulting in the issue: n/a
What behaviour did you expect: To understand why constant propagation is restricted as it is
What happened instead: Constant propagation in goto-symex is limited to expressions with ids
ID_typecast, ID_array_of, ID_plus, ID_array, ID_struct, ID_union, ID_byte_update_big_endian, ID_byte_update_little_endian, and ID_address_of -- if all operands are constants. Furthermore ID_mult is always deemed constant irrespective of its operands, and ID_with is never constant. It is not clear why this specific set of operations was chosen, and ID_with is explained as "this is bad."