Object

at.logic.gapt.provers.atp

SearchDerivation

Related Doc: package atp

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object SearchDerivation extends Logger

Given a clause c and a set of clauses C, this algorithm instantiates ATP to search for a Robinson resolution derivation (either propositional or first-order) of a clause c' such that c' subsumes c.

TODO: At the moment, the ATP configuration is taken from a test due to Tomer. It does not find some derivations, e.g. of P from P | P. It should be fixed such that it returns a derivation of a clause subsuming the given clause, if such a refutation exists.

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  1. final def !=(arg0: Any): Boolean

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  2. final def ##(): Int

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  3. final def ==(arg0: Any): Boolean

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  4. object MyProver extends Prover[OccClause]

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  5. def apply(initial_clauses: Seq[HOLSequent], target: HOLSequent, propositional: Boolean = false): Option[ResolutionProof[OccClause]]

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  9. final def eq(arg0: AnyRef): Boolean

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  10. def equals(arg0: Any): Boolean

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  11. def error(msg: ⇒ String, e: Throwable): Nothing

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  12. def error(msg: ⇒ String): Unit

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  16. def info(msg: ⇒ String): Unit

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  17. final def isInstanceOf[T0]: Boolean

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  18. val log: Logger

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  19. def loggerName: String

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  21. final def notify(): Unit

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  22. final def notifyAll(): Unit

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  23. def stream(f: HOLSequent, alg: UnificationAlgorithm): Stream[Command[OccClause]]

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  24. def stream1(alg: UnificationAlgorithm): Stream[Command[OccClause]]

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  25. final def synchronized[T0](arg0: ⇒ T0): T0

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  27. def trace(msg: ⇒ String): Unit

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  28. val triv_unification: UnificationAlgorithm

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  33. def warn(msg: ⇒ String): Unit

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