When a program parse a bin size xml in XSLT, NPE (or NPE) occurs.

javax.xml.transform.TransformerException: java.lang.NullPointerException
        at
com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(Transfo
rmerImpl.java:755)
        at
com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(Transfo
rmerImpl.java:359)
        at sample.xslt.Test.main(Test.java:88)Caused by:
java.lang.NullPointerException
        at
com.sun.org.apache.xalan.internal.xsltc.dom.MultiDOM$AxisIterator.setStartNode
(MultiDOM.java:98)
        at
com.sun.org.apache.xalan.internal.xsltc.dom.StepIterator.setStartNode(StepIter
ator.java:99)
        at
com.sun.org.apache.xalan.internal.xsltc.dom.DupFilterIterator.setStartNode(Dup
FilterIterator.java:99)
        at GregorSamsa.template00001af6()
        at GregorSamsa.template00001af2()
        at GregorSamsa.template00001af1()
        at GregorSamsa.template00001af0()
        at GregorSamsa.template$dot$0()
        at GregorSamsa.applyTemplates()
        at GregorSamsa.transform()
        at
com.sun.org.apache.xalan.internal.xsltc.runtime.AbstractTranslet.transform(Abs
tractTranslet.java:617)
        at
com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(Transfo
rmerImpl.java:748)
        ... 2 more
---------
java.lang.NullPointerException
        at
com.sun.org.apache.xalan.internal.xsltc.dom.MultiDOM$AxisIterator.setStartNode
(MultiDOM.java:98)
        at
com.sun.org.apache.xalan.internal.xsltc.dom.StepIterator.setStartNode(StepIter
ator.java:99)
        at
com.sun.org.apache.xalan.internal.xsltc.dom.DupFilterIterator.setStartNode(Dup
FilterIterator.java:99)
        at GregorSamsa.template00001af6()
        at GregorSamsa.template00001af2()
        at GregorSamsa.template00001af1()
        at GregorSamsa.template00001af0()
        at GregorSamsa.template$dot$0()
        at GregorSamsa.applyTemplates()
        at GregorSamsa.transform()
        at
com.sun.org.apache.xalan.internal.xsltc.runtime.AbstractTranslet.transform(Abs
tractTranslet.java:617)
        at
com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(Transfo
rmerImpl.java:748)
        at
com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(Transfo
rmerImpl.java:359)
        at sample.xslt.Test.main(Test.java:88)