Java HotSpot(TM) 64-Bit Server VM (build 20.45-b01, mixed mode)
[1011807]  ERROR - plication.impl.ApplicationImpl - Tree changed while calculating text. startStamp:8; current:16; myHC:-1; assertThreading:true; Thread.holdsLock(START_OFFSET_LOCK):false; Thread.holdsLock(PSI_LOCK):false; this: Element(java.FILE) 
java.lang.AssertionError: Tree changed while calculating text. startStamp:8; current:16; myHC:-1; assertThreading:true; Thread.holdsLock(START_OFFSET_LOCK):false; Thread.holdsLock(PSI_LOCK):false; this: Element(java.FILE)
	at com.intellij.psi.impl.source.tree.CompositeElement.textToCharArray(CompositeElement.java:288)
	at com.intellij.psi.impl.source.tree.CompositeElement.getText(CompositeElement.java:253)
	at com.intellij.psi.impl.source.tree.LazyParseableElement.getText(LazyParseableElement.java:79)
	at com.intellij.util.indexing.FileBasedIndexImpl$PsiContent.getText(FileBasedIndexImpl.java:1482)
	at com.intellij.util.indexing.FileBasedIndexImpl$23.run(FileBasedIndexImpl.java:1529)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeNonCancelableSection(ProgressManagerImpl.java:137)
	at com.intellij.util.indexing.FileBasedIndexImpl.a(FileBasedIndexImpl.java:1525)
	at com.intellij.util.indexing.FileBasedIndexImpl.a(FileBasedIndexImpl.java:1416)
	at com.intellij.util.indexing.FileBasedIndexImpl.ensureUpToDate(FileBasedIndexImpl.java:830)
	at com.intellij.util.indexing.FileBasedIndexImpl.ensureUpToDate(FileBasedIndexImpl.java:801)
	at com.intellij.psi.stubs.StubIndexImpl.process(StubIndexImpl.java:219)
	at com.intellij.psi.stubs.StubIndexImpl.get(StubIndexImpl.java:208)
	at com.intellij.psi.stubs.StubIndex.safeGet(StubIndex.java:65)
	at com.intellij.psi.impl.java.stubs.index.JavaFullClassNameIndex.get(JavaFullClassNameIndex.java:48)
	at com.intellij.psi.impl.file.impl.JavaFileManagerBase.a(JavaFileManagerBase.java:276)
	at com.intellij.psi.impl.file.impl.JavaFileManagerBase.findClass(JavaFileManagerBase.java:186)
	at com.intellij.psi.impl.JavaPsiFacadeImpl$PsiElementFinderImpl.findClass(JavaPsiFacadeImpl.java:281)
	at com.intellij.psi.impl.JavaPsiFacadeImpl.findClass(JavaPsiFacadeImpl.java:109)
	at com.intellij.psi.impl.source.PsiJavaCodeReferenceElementImpl.b(PsiJavaCodeReferenceElementImpl.java:390)
	at com.intellij.psi.impl.source.PsiJavaCodeReferenceElementImpl.b(PsiJavaCodeReferenceElementImpl.java:460)
	at com.intellij.psi.impl.source.PsiJavaCodeReferenceElementImpl.access$000(PsiJavaCodeReferenceElementImpl.java:54)
	at com.intellij.psi.impl.source.PsiJavaCodeReferenceElementImpl$OurGenericsResolver.resolve(PsiJavaCodeReferenceElementImpl.java:325)
	at com.intellij.psi.impl.source.PsiJavaCodeReferenceElementImpl$OurGenericsResolver.resolve(PsiJavaCodeReferenceElementImpl.java:317)
	at com.intellij.psi.impl.source.resolve.ResolveCache$2.compute(ResolveCache.java:107)
	at com.intellij.openapi.util.RecursionManager$2.doPreventingRecursion(RecursionManager.java:110)
	at com.intellij.psi.impl.source.resolve.ResolveCache.a(ResolveCache.java:104)
	at com.intellij.psi.impl.source.resolve.ResolveCache.resolveWithCaching(ResolveCache.java:132)
	at com.intellij.psi.impl.source.PsiJavaCodeReferenceElementImpl.multiResolve(PsiJavaCodeReferenceElementImpl.java:371)
	at com.intellij.psi.impl.source.PsiJavaCodeReferenceElementImpl.advancedResolve(PsiJavaCodeReferenceElementImpl.java:345)
	at com.intellij.psi.impl.source.codeStyle.JavaCodeStyleManagerImpl$1.visitReferenceElement(JavaCodeStyleManagerImpl.java:164)
	at com.intellij.psi.impl.source.PsiJavaCodeReferenceElementImpl.accept(PsiJavaCodeReferenceElementImpl.java:957)
	at com.intellij.psi.PsiWalkingState.visit(PsiWalkingState.java:61)
	at com.intellij.psi.PsiWalkingState.visit(PsiWalkingState.java:26)
	at com.intellij.util.WalkingState.walkChildren(WalkingState.java:65)
	at com.intellij.util.WalkingState.elementStarted(WalkingState.java:52)
	at com.intellij.psi.PsiWalkingState.elementStarted(PsiWalkingState.java:70)
	at com.intellij.psi.JavaRecursiveElementWalkingVisitor.visitElement(JavaRecursiveElementWalkingVisitor.java:34)
	at com.intellij.psi.PsiElementVisitor.visitFile(PsiElementVisitor.java:32)
	at com.intellij.psi.JavaElementVisitor.visitJavaFile(JavaElementVisitor.java:328)
	at com.intellij.psi.impl.source.PsiJavaFileBaseImpl.accept(PsiJavaFileBaseImpl.java:409)
	at com.intellij.psi.impl.source.codeStyle.JavaCodeStyleManagerImpl.findRedundantImports(JavaCodeStyleManagerImpl.java:161)
	at com.intellij.refactoring.OptimizeImportsRefactoringHelper$2$1.run(OptimizeImportsRefactoringHelper.java:82)
	at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:929)
	at com.intellij.refactoring.OptimizeImportsRefactoringHelper$2.run(OptimizeImportsRefactoringHelper.java:66)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl$5.run(ProgressManagerImpl.java:291)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl$TaskRunnable.run(ProgressManagerImpl.java:495)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl$6.run(ProgressManagerImpl.java:304)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl$2.run(ProgressManagerImpl.java:185)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:226)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcess(ProgressManagerImpl.java:175)
	at com.intellij.openapi.application.impl.ApplicationImpl$10$1.run(ApplicationImpl.java:681)
	at com.intellij.openapi.application.impl.ApplicationImpl$8.run(ApplicationImpl.java:454)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
	at java.lang.Thread.run(Thread.java:662)
	at com.intellij.openapi.application.impl.ApplicationImpl$1$1.run(ApplicationImpl.java:152)
[1011811]  ERROR - plication.impl.ApplicationImpl - IntelliJ IDEA 12.1.4  Build #IU-129.713 
[1011812]  ERROR - plication.impl.ApplicationImpl - JDK: 1.6.0_45 
[1011812]  ERROR - plication.impl.ApplicationImpl - VM: Java HotSpot(TM) 64-Bit Server VM 
[1011812]  ERROR - plication.impl.ApplicationImpl - Vendor: Sun Microsystems Inc. 
[1011812]  ERROR - plication.impl.ApplicationImpl - OS: Linux 
[1011812]  ERROR - plication.impl.ApplicationImpl - Last Action: FindUsages 
