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java.lang.Objectkodkod.engine.Proof
public abstract class Proof
Contains a proof of unsatisfiability of a given FOL formula.
log.formula = formula |
formula: Formula // the unsatisfiable formula |
bounds: Bounds // the bounds with respect to which the formula is unsatisfiable |
log: TranslationLog // log of the translation of this.formula with respect to this.bounds |
Method Summary | |
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abstract java.util.Iterator<TranslationRecord> |
core()
Returns an iterator over the log records for the nodes
that are in the unsatisfiable core of this.formula. |
java.util.Set<Formula> |
highLevelCore()
Returns the unsatisfiable subset of the top-level conjunctions of this.formula as given by this.core(). |
TranslationLog |
log()
Returns the log of the translation that resulted in this proof. |
abstract void |
minimize(ReductionStrategy strategy)
Minimizes the proof of this.formula's unsatisfiability using the specified proof reduction strategy. |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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public abstract void minimize(ReductionStrategy strategy)
java.lang.UnsupportedOperationException
- - this is a proof for a trivially
unsatisifiable formula and cannot be minimizedReductionStrategy
minimizes the proof of this.formula's unsatisfiability
using the specified proof reduction strategy. |
public abstract java.util.Iterator<TranslationRecord> core()
log records
for the nodes
that are in the unsatisfiable core of this.formula. The record objects returned by the iterator are not
guaranteed to be immutable. In particular, the state of a record object
returned by next() is guaranteed to remain the same only until the
subsequent call to next().
log records
for the nodes
that are in the unsatisfiable core of this.formula.public final java.util.Set<Formula> highLevelCore()
public final TranslationLog log()
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