add simplification to remove #mapOffset from symbolic key bytes lists
#836
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#mapOffsetadjusts the offset parameter of references and pointers in argument lists when values containing them are read from or written to outer stack frames. This happens to the bytes ofPubKeydata in P-token, which is known to be allInteger(_, 8, false)but abstracted in a list-sorted variable.Without this simplification, a path condition
KEYBYTES ==K <some key>will not imply#mapOffset(KEYBYTES) ==K <some key>. This was causing vacuous branches which end up inassert_failedcalls.Some proofs were failing before and are passing with this simplification.