InvocationTargetException when using static Inliner in soot with apache lucene jar?

[achabdo]

I got this error when executing my java program after using the static inliner with CHA for Call Graph construction .

DaCapo unknown luindex starting =====.
java.lang.reflect.InvocationTargetException
java.lang.reflect.InvocationTargetException
at java.lang.ReflectiveOperationException.(ReflectiveOperationException.java)
at java.lang.reflect.InvocationTargetException.(InvocationTargetException.java)
at java.lang.reflect.Method.internalInvoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java)
at org.dacapo.harness.Luindex.iterate(Luindex.java)
at org.dacapo.harness.Benchmark.run(Benchmark.java)
at org.dacapo.harness.TestHarness.main(TestHarness.java)
at java.lang.reflect.Method.internalInvoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java)
at Harness.main(Unknown Source)
Caused by: java.lang.NullPointerException
at org.apache.lucene.store.FSDirectory.getLockID(FSDirectory.java)
at org.apache.lucene.store.Directory.setLockFactory(Directory.java)
at org.apache.lucene.store.FSDirectory.getDirectory(FSDirectory.java)
at org.apache.lucene.index.IndexWriter.(IndexWriter.java)
at org.dacapo.luindex.Index.main(Index.java)
... 8 more

[pavanupb]

Could you please provide your java program