Program: 155576
Project: 155576
Buggy source:
private synchronized <E extends BaseRealm>E doCreateRealmOrGetFromCache(RealmConfiguration configuration,Class<E> realmClass){
  RefAndCount refAndCount=refAndCountMap.get(RealmCacheType.valueOf(realmClass));
  if (getTotalGlobalRefCount() == 0) {
    copyAssetFileIfNeeded(configuration);
    boolean fileExists=configuration.realmExists();
    SharedRealm sharedRealm=null;
    try {
      sharedRealm=SharedRealm.getInstance(configuration);
      if (!fileExists) {
        try {
          ObjectServerFacade.getSyncFacadeIfPossible().downloadRemoteChanges(configuration);
        }
 catch (        Throwable t) {
          sharedRealm.close();
          sharedRealm=null;
          Realm.deleteRealm(configuration);
          throw t;
        }
      }
      if (Table.primaryKeyTableNeedsMigration(sharedRealm)) {
        sharedRealm.beginTransaction();
        if (Table.migratePrimaryKeyTableIfNeeded(sharedRealm)) {
          sharedRealm.commitTransaction();
        }
 else {
          sharedRealm.cancelTransaction();
        }
      }
    }
  finally {
      if (sharedRealm != null) {
        sharedRealm.close();
      }
    }
    this.configuration=configuration;
  }
 else {
    validateConfiguration(configuration);
  }
  if (refAndCount.localRealm.get() == null) {
    BaseRealm realm;
    if (realmClass == Realm.class) {
      realm=Realm.createInstance(this);
    }
 else     if (realmClass == DynamicRealm.class) {
      realm=DynamicRealm.createInstance(this);
    }
 else {
      throw new IllegalArgumentException(WRONG_REALM_CLASS_MESSAGE);
    }
    refAndCount.localRealm.set(realm);
    refAndCount.localCount.set(0);
    if (realmClass == Realm.class && refAndCount.globalCount == 0) {
      RealmCache.storeColumnIndices(typedColumnIndicesArray,realm.getSchema().getImmutableColumnIndicies());
    }
    refAndCount.globalCount++;
  }
  Integer refCount=refAndCount.localCount.get();
  refAndCount.localCount.set(refCount + 1);
  return (E)refAndCount.localRealm.get();
}

Fixed version (ground truth):
private synchronized <E extends BaseRealm>E doCreateRealmOrGetFromCache(RealmConfiguration configuration,Class<E> realmClass){
  RefAndCount refAndCount=refAndCountMap.get(RealmCacheType.valueOf(realmClass));
  if (getTotalGlobalRefCount() == 0) {
    copyAssetFileIfNeeded(configuration);
    boolean fileExists=configuration.realmExists();
    SharedRealm sharedRealm=null;
    try {
      sharedRealm=SharedRealm.getInstance(configuration);
      if (!fileExists) {
        try {
          ObjectServerFacade.getSyncFacadeIfPossible().downloadRemoteChanges(configuration);
        }
 catch (        Throwable t) {
          sharedRealm.close();
          sharedRealm=null;
          Realm.deleteRealm(configuration);
          throw t;
        }
      }
      if (Table.primaryKeyTableNeedsMigration(sharedRealm)) {
        sharedRealm.beginTransaction();
        if (Table.migratePrimaryKeyTableIfNeeded(sharedRealm)) {
          sharedRealm.commitTransaction();
        }
 else {
          sharedRealm.cancelTransaction();
        }
      }
    }
  finally {
      if (sharedRealm != null) {
        sharedRealm.close();
      }
    }
    this.configuration=configuration;
  }
 else {
    validateConfiguration(configuration);
  }
  if (refAndCount.localRealm.get() == null) {
    BaseRealm realm;
    if (realmClass == Realm.class) {
      realm=Realm.createInstance(this);
    }
 else     if (realmClass == DynamicRealm.class) {
      realm=DynamicRealm.createInstance(this);
    }
 else {
      throw new IllegalArgumentException(WRONG_REALM_CLASS_MESSAGE);
    }
    refAndCount.localRealm.set(realm);
    refAndCount.localCount.set(0);
    if (realmClass == Realm.class && refAndCount.globalCount == 0) {
      RealmCache.storeColumnIndices(typedColumnIndicesArray,realm.getSchema().getImmutableColumnIndices());
    }
    refAndCount.globalCount++;
  }
  Integer refCount=refAndCount.localCount.get();
  refAndCount.localCount.set(refCount + 1);
  return (E)refAndCount.localRealm.get();
}