Program: 50081
Project: 50081
Buggy source:
void syncForDead(MemberImpl deadMember,Block block){
  Address deadAddress=deadMember.getAddress();
  if (deadAddress.equals(block.getOwner())) {
    MemberImpl member=concurrentMapManager.getNextMemberBeforeSync(deadAddress,true,1);
    if (member == null) {
      if (!concurrentMapManager.isSuperClient()) {
        block.setOwner(thisAddress);
      }
 else {
        block.setOwner(null);
      }
    }
 else {
      if (!deadAddress.equals(member.getAddress()) && !concurrentMapManager.isSuperClient()) {
        block.setOwner(member.getAddress());
      }
 else {
        block.setOwner(null);
      }
    }
    if (!block.isMigrating()) {
      Member currentOwner=(block.getOwner() == null) ? null : concurrentMapManager.getMember(block.getOwner());
      if (currentOwner != null) {
        MigrationEvent migrationEvent=new MigrationEvent(concurrentMapManager.node,block.getBlockId(),deadMember,currentOwner);
        partitionServiceImpl.doFireMigrationEvent(true,migrationEvent);
        partitionServiceImpl.doFireMigrationEvent(false,migrationEvent);
      }
    }
  }
  if (block.isMigrating()) {
    if (deadAddress.equals(block.getMigrationAddress())) {
      MemberImpl member=concurrentMapManager.getNextMemberBeforeSync(deadAddress,true,1);
      if (member == null) {
        if (!concurrentMapManager.isSuperClient()) {
          block.setMigrationAddress(thisAddress);
        }
 else {
          block.setMigrationAddress(null);
        }
      }
 else {
        if (!deadAddress.equals(member.getAddress())) {
          block.setMigrationAddress(member.getAddress());
        }
 else {
          block.setMigrationAddress(null);
        }
      }
    }
  }
  if (block.isMigrating() && block.getMigrationAddress().equals(block.getOwner())) {
    block.setMigrationAddress(null);
    Member currentOwner=(block.getOwner() == null) ? null : concurrentMapManager.getMember(block.getOwner());
    MigrationEvent migrationEvent=new MigrationEvent(concurrentMapManager.node,block.getBlockId(),deadMember,currentOwner);
    partitionServiceImpl.doFireMigrationEvent(true,migrationEvent);
    partitionServiceImpl.doFireMigrationEvent(false,migrationEvent);
  }
  partitionServiceImpl.reset();
}

Fixed version (ground truth):
void syncForDead(MemberImpl deadMember,Block block){
  Address deadAddress=deadMember.getAddress();
  if (deadAddress.equals(block.getOwner())) {
    MemberImpl member=concurrentMapManager.getNextMemberBeforeSync(deadAddress,true,1);
    if (member == null) {
      if (!concurrentMapManager.isSuperClient()) {
        block.setOwner(thisAddress);
      }
 else {
        block.setOwner(null);
      }
    }
 else {
      if (!deadAddress.equals(member.getAddress())) {
        block.setOwner(member.getAddress());
      }
 else {
        block.setOwner(null);
      }
    }
    if (!block.isMigrating()) {
      Member currentOwner=(block.getOwner() == null) ? null : concurrentMapManager.getMember(block.getOwner());
      if (currentOwner != null) {
        MigrationEvent migrationEvent=new MigrationEvent(concurrentMapManager.node,block.getBlockId(),deadMember,currentOwner);
        partitionServiceImpl.doFireMigrationEvent(true,migrationEvent);
        partitionServiceImpl.doFireMigrationEvent(false,migrationEvent);
      }
    }
  }
  if (block.isMigrating()) {
    if (deadAddress.equals(block.getMigrationAddress())) {
      MemberImpl member=concurrentMapManager.getNextMemberBeforeSync(deadAddress,true,1);
      if (member == null) {
        if (!concurrentMapManager.isSuperClient()) {
          block.setMigrationAddress(thisAddress);
        }
 else {
          block.setMigrationAddress(null);
        }
      }
 else {
        if (!deadAddress.equals(member.getAddress())) {
          block.setMigrationAddress(member.getAddress());
        }
 else {
          block.setMigrationAddress(null);
        }
      }
    }
  }
  if (block.isMigrating() && block.getMigrationAddress().equals(block.getOwner())) {
    block.setMigrationAddress(null);
    Member currentOwner=(block.getOwner() == null) ? null : concurrentMapManager.getMember(block.getOwner());
    MigrationEvent migrationEvent=new MigrationEvent(concurrentMapManager.node,block.getBlockId(),deadMember,currentOwner);
    partitionServiceImpl.doFireMigrationEvent(true,migrationEvent);
    partitionServiceImpl.doFireMigrationEvent(false,migrationEvent);
  }
  partitionServiceImpl.reset();
}