await_cancellation in the main thread, independently of the execution futures, which might get interrupted or be absent after node deletetion;

updated README;

defensive defaults for more robust experience for new users;

merged

preliminary support for newer versions of Z3

turned SMT counterexamples into verbose messages (they had been swallowed before, following the state of smt_trace -- which is off by default), because they might be useful for the user

let the theory formally depend on the Boogie output

look for certificates relative to the theory

dropped numerals from monomorphization blacklist (only particular numerals are builtin, all other numerals should be treated uninterpreted), this blacklist should contain only truely polymorphic builtin constants supported by SMT

merged

update Theory.requires with new theory name

tuned signatures;