The sequent that should be proved.
An LK-Proof of the sequent, or None if not successful.
The formula that should be proved.
An LK-Proof of :- formula, or None if not successful.
Checks whether a set of clauses is unsatisfiable.
Checks whether a set of clauses is unsatisfiable.
Checks whether a formula is unsatisfiable.
Checks whether a formula is unsatisfiable.
The sequent whose validity should be checked.
True if the formula is valid.
The formula whose validity should be checked.
True if the formula is valid.
Starts an incremental proving session.
Starts an incremental proving session.
Uses our propositional prover to get LK proof andsat4j for validity check