public PolyhedraEnvironment <Expression> Meet(PolyhedraEnvironment <Expression> right)
{
PolyhedraEnvironment <Expression> result;
if (AbstractDomainsHelper.TryTrivialMeet(this, right, out result))
{
return(result);
}
else
{
return(Factory(UnderlyingPolyhedra.Meet(embedded, right.embedded), intv.Meet(right.intv)));
}
}
public bool LessEqual(PolyhedraEnvironment <Expression> right)
{
bool result;
if (AbstractDomainsHelper.TryTrivialLessEqual(this, right, out result))
{
return(result);
}
else
{
return(UnderlyingPolyhedra.LowerThan(embedded, right.embedded) && intv.LessEqual(right.intv));
}
}
public PolyhedraEnvironment <Expression> Widening(PolyhedraEnvironment <Expression> prev)
{
PolyhedraEnvironment <Expression> result;
if (AbstractDomainsHelper.TryTrivialJoin(this, prev, out result))
{
return(result);
}
else
{
// Boogie's polyhedra has it in the other order
return(Factory(UnderlyingPolyhedra.Widen(prev.embedded, embedded), intv.Widening(prev.intv)));
}
}
public override PolyhedraEnvironment <Expression> VisitVariable(Expression exp, object variable, PolyhedraEnvironment <Expression> data)
{
return(data);
}
public override PolyhedraEnvironment <Expression> VisitNotEqual(Expression left, Expression right, PolyhedraEnvironment <Expression> data)
{
// left != right
AI.IExpr notEq = linearfactory.Neq(Converter.Box(left, this.Decoder), Converter.Box(right, this.Decoder));
return(data.Factory(UnderlyingPolyhedra.Constrain(data.embedded, notEq), data.intv));
}
public override PolyhedraEnvironment <Expression> VisitLessThan(Expression left, Expression right, PolyhedraEnvironment <Expression> data)
{
return((PolyhedraEnvironment <Expression>)data.TestTrueLessThan(left, right));
}
private PolyhedraEnvironment(PolyhedraEnvironment <Expression> pe, AI.PolyhedraLattice.Element value, IntervalEnvironment <Variable, Expression> intv)
: this(pe.decoder, pe.encoder, value, intv)
{
testTrueVisitor = pe.testTrueVisitor;
testFalseVisitor = pe.testFalseVisitor;
}