Program: 160685
Project: 160685
Buggy source:
@Nullable @Override public LineMarkerInfo getLineMarkerInfo(@NotNull final PsiElement element){
  if (element instanceof PsiMethod) {
    PsiMethod psiMethod=(PsiMethod)element;
    PsiAnnotation subscriberAnnotation=PsiConsultantImpl.findAnnotationOnMethod(psiMethod,OttoProjectHandler.SUBSCRIBE_CLASS_NAME);
    if (subscriberAnnotation != null) {
      PsiTypeElement methodParameter=getMethodParameter(psiMethod);
      if (methodParameter != null) {
        return new LineMarkerInfo<PsiElement>(psiMethod,methodParameter.getTextRange(),ICON,Pass.UPDATE_ALL,null,SHOW_INSTANTIATIONS_AND_PRODUCERS,GutterIconRenderer.Alignment.LEFT);
      }
    }
    PsiAnnotation producerAnnotation=PsiConsultantImpl.findAnnotationOnMethod(psiMethod,OttoProjectHandler.PRODUCER_CLASS_NAME);
    if (producerAnnotation != null) {
      return new LineMarkerInfo<PsiElement>(psiMethod,psiMethod.getTextRange(),ICON,Pass.UPDATE_ALL,null,SHOW_SUBSCRIBERS_FROM_PRODUCERS,GutterIconRenderer.Alignment.LEFT);
    }
  }
 else   if (element instanceof PsiClass) {
    PsiClass psiClass=(PsiClass)element;
    String qualifiedName=psiClass.getQualifiedName();
    if (qualifiedName != null) {
      OttoProjectHandler ottoProjectHandler=OttoProjectHandler.get(element.getProject());
      if (ottoProjectHandler.isEventClass(qualifiedName)) {
        PsiIdentifier nameIdentifier=psiClass.getNameIdentifier();
        if (nameIdentifier != null) {
          return new LineMarkerInfo<PsiClass>(psiClass,nameIdentifier.getTextRange(),ICON,Pass.UPDATE_ALL,null,SHOW_ALL,GutterIconRenderer.Alignment.LEFT);
        }
      }
    }
  }
 else   if (element instanceof PsiMethodCallExpression) {
    PsiMethodCallExpression expression=(PsiMethodCallExpression)element;
    PsiMethod psiMethod=expression.resolveMethod();
    if (psiMethod != null) {
      if (psiMethod.equals(getOttoBusMethod(element))) {
        PsiType[] expressionTypes=expression.getArgumentList().getExpressionTypes();
        if (expressionTypes.length > 0) {
          PsiClass eventClass=PsiConsultantImpl.getClass(expressionTypes[0]);
          return new LineMarkerInfo<PsiElement>(eventClass,element.getTextRange(),ICON,Pass.UPDATE_ALL,null,SHOW_SUBSCRIBERS,GutterIconRenderer.Alignment.LEFT);
        }
      }
    }
  }
  return null;
}

Fixed version (ground truth):
@Nullable @Override public LineMarkerInfo getLineMarkerInfo(@NotNull final PsiElement element){
  if (element instanceof PsiMethod) {
    PsiMethod psiMethod=(PsiMethod)element;
    PsiAnnotation subscriberAnnotation=PsiConsultantImpl.findAnnotationOnMethod(psiMethod,OttoProjectHandler.SUBSCRIBE_CLASS_NAME);
    if (subscriberAnnotation != null) {
      PsiTypeElement methodParameter=getMethodParameter(psiMethod);
      if (methodParameter != null) {
        return new LineMarkerInfo<PsiElement>(psiMethod,methodParameter.getTextRange(),ICON,Pass.UPDATE_ALL,null,SHOW_INSTANTIATIONS_AND_PRODUCERS,GutterIconRenderer.Alignment.LEFT);
      }
    }
    PsiAnnotation producerAnnotation=PsiConsultantImpl.findAnnotationOnMethod(psiMethod,OttoProjectHandler.PRODUCER_CLASS_NAME);
    if (producerAnnotation != null) {
      return new LineMarkerInfo<PsiElement>(psiMethod,psiMethod.getTextRange(),ICON,Pass.UPDATE_ALL,null,SHOW_SUBSCRIBERS_FROM_PRODUCERS,GutterIconRenderer.Alignment.LEFT);
    }
  }
 else   if (element instanceof PsiClass) {
    PsiClass psiClass=(PsiClass)element;
    String qualifiedName=psiClass.getQualifiedName();
    if (qualifiedName != null) {
      OttoProjectHandler ottoProjectHandler=OttoProjectHandler.get(element.getProject());
      if (ottoProjectHandler.isEventClass(qualifiedName)) {
        PsiIdentifier nameIdentifier=psiClass.getNameIdentifier();
        if (nameIdentifier != null) {
          return new LineMarkerInfo<PsiClass>(psiClass,nameIdentifier.getTextRange(),ICON,Pass.UPDATE_ALL,null,SHOW_ALL,GutterIconRenderer.Alignment.LEFT);
        }
      }
    }
  }
 else   if (element instanceof PsiMethodCallExpression) {
    PsiMethodCallExpression expression=(PsiMethodCallExpression)element;
    PsiMethod psiMethod=expression.resolveMethod();
    if (psiMethod != null) {
      if (psiMethod.equals(getOttoBusMethod(element))) {
        PsiType[] expressionTypes=expression.getArgumentList().getExpressionTypes();
        if (expressionTypes.length > 0) {
          return new LineMarkerInfo<PsiElement>(element,element.getTextRange(),ICON,Pass.UPDATE_ALL,null,SHOW_SUBSCRIBERS,GutterIconRenderer.Alignment.LEFT);
        }
      }
    }
  }
  return null;
}