heap_lang: Make binary "=" operator partial, to sync with CmpXchg
This also gets rid of [val_for_compare]-normalization; instead we introduce a [LitErased] literal that is suited for use by erasure theorems.
Fixes #248 (closed)
This also gets rid of [val_for_compare]-normalization; instead we introduce a [LitErased] literal that is suited for use by erasure theorems.
Fixes #248 (closed)