예제 #1
0
 public static SMTAffineTerm create(Rational factor, Term subterm) {
   Sort sort = subterm.getSort();
   Map<Term, Rational> summands;
   Rational constant;
   if (factor.equals(Rational.ZERO)) {
     summands = Collections.emptyMap();
     constant = Rational.ZERO;
   } else if (subterm instanceof SMTAffineTerm) {
     SMTAffineTerm a = (SMTAffineTerm) subterm;
     constant = a.mConstant.mul(factor);
     summands = new HashMap<Term, Rational>();
     for (Map.Entry<Term, Rational> me : a.mSummands.entrySet()) {
       summands.put(me.getKey(), me.getValue().mul(factor));
     }
   } else if (subterm instanceof ConstantTerm) {
     Object value = ((ConstantTerm) subterm).getValue();
     if (value instanceof BigInteger) {
       constant = Rational.valueOf((BigInteger) value, BigInteger.ONE).mul(factor);
       summands = Collections.emptyMap();
     } else if (value instanceof BigDecimal) {
       BigDecimal decimal = (BigDecimal) value;
       if (decimal.scale() <= 0) {
         BigInteger num = decimal.toBigInteger();
         constant = Rational.valueOf(num, BigInteger.ONE).mul(factor);
       } else {
         BigInteger num = decimal.unscaledValue();
         BigInteger denom = BigInteger.TEN.pow(decimal.scale());
         constant = Rational.valueOf(num, denom).mul(factor);
       }
       summands = Collections.emptyMap();
     } else if (value instanceof Rational) {
       constant = (Rational) value;
       summands = Collections.emptyMap();
     } else {
       summands = Collections.singletonMap(subterm, factor);
       constant = Rational.ZERO;
     }
   } else {
     summands = Collections.singletonMap(subterm, factor);
     constant = Rational.ZERO;
   }
   return create(summands, constant, sort);
 }
예제 #2
0
 /**
  * Add a sub-annotation to the current LAAnnotation and explain it.
  *
  * @param reason The reason for which a sub-annotation is created.
  * @param coeff The Farkas coefficient of the sub-annotation.
  */
 public void addAnnotation(LAReason reason, Rational coeff) {
   assert ((coeff.signum() > 0) == reason.isUpper());
   Rational sign = Rational.valueOf(coeff.signum(), 1);
   LAAnnotation annot = mSubReasons.get(reason);
   if (annot == null) {
     annot = new LAAnnotation(reason);
     mSubReasons.put(reason, annot);
     if (mAnnotationStack != null) mAnnotationStack.addLast(annot);
     reason.explain(this, reason.getVar().getEpsilon(), sign);
     if (mAnnotationStack != null) mAnnotationStack.removeLast();
   }
   if (mAnnotationStack != null) mAnnotationStack.getLast().addFarkas(annot, coeff);
 }
 @Override
 protected void convert(Term term) {
   if (term instanceof ConstantTerm) {
     ConstantTerm ct = (ConstantTerm) term;
     if (ct.getValue() instanceof BigInteger) {
       Rational rat = Rational.valueOf((BigInteger) ct.getValue(), BigInteger.ONE);
       setResult(rat.toTerm(term.getSort()));
     } else if (ct.getValue() instanceof BigDecimal) {
       BigDecimal decimal = (BigDecimal) ct.getValue();
       Rational rat;
       if (decimal.scale() <= 0) {
         BigInteger num = decimal.toBigInteger();
         rat = Rational.valueOf(num, BigInteger.ONE);
       } else {
         BigInteger num = decimal.unscaledValue();
         BigInteger denom = BigInteger.TEN.pow(decimal.scale());
         rat = Rational.valueOf(num, denom);
       }
       setResult(rat.toTerm(term.getSort()));
     } else if (ct.getValue() instanceof Rational) setResult(ct);
     else setResult(term);
   } else super.convert(term);
 }
예제 #4
0
 public void addEQAnnotation(LiteralReason reason, Rational coeff) {
   // FIXME: make a special annotation for disequalities
   assert ((coeff.signum() > 0) == reason.isUpper());
   Rational sign = Rational.valueOf(coeff.signum(), 1);
   LAAnnotation annot = mSubReasons.get(reason);
   if (annot == null) {
     annot = new LAAnnotation(reason);
     mSubReasons.put(reason, annot);
     mAnnotationStack.addLast(annot);
     if (reason.getOldReason() instanceof LiteralReason)
       reason.getOldReason().explain(this, reason.getVar().getEpsilon(), sign);
     else addAnnotation(reason.getOldReason(), sign);
     addLiteral(reason.getLiteral().negate(), sign);
     mAnnotationStack.removeLast();
   }
   mAnnotationStack.getLast().addFarkas(annot, coeff);
 }