Program: 62397
Project: 62397
Buggy source:
/** 
 * This methods checks all the previously configured substitutions and ensures that they are still related to existing node and matching in the topology.
 * @param deploymentTopology The deployment topology.
 * @param substitutedNodes The previous configuration for substitution nodes.
 * @param availableSubstitutions The substitutions provided by the location's node matching.
 */
private void removeUnsynchronizedSubstitutions(DeploymentTopology deploymentTopology,Map<String,String> substitutedNodes,Map<String,List<LocationResourceTemplate>> availableSubstitutions){
  if (deploymentTopology.getNodeTemplates() == null) {
    substitutedNodes.clear();
    return;
  }
  Iterator<Map.Entry<String,String>> mappingEntryIterator=substitutedNodes.entrySet().iterator();
  while (mappingEntryIterator.hasNext()) {
    Map.Entry<String,String> entry=mappingEntryIterator.next();
    if (deploymentTopology.getNodeTemplates().containsKey(entry.getKey())) {
      List<LocationResourceTemplate> options=availableSubstitutions.get(entry.getKey());
      if (options == null) {
        mappingEntryIterator.remove();
      }
 else {
        List<LocationResourceTemplate> availableSubstitutionsForNode=availableSubstitutions.get(entry.getKey());
        boolean substitutedTemplateExist=false;
        for (        LocationResourceTemplate availableSubstitutionForNode : availableSubstitutionsForNode) {
          if (availableSubstitutionForNode.getId().equals(entry.getValue())) {
            substitutedTemplateExist=true;
            break;
          }
        }
        if (!substitutedTemplateExist) {
          mappingEntryIterator.remove();
        }
      }
    }
 else {
      mappingEntryIterator.remove();
    }
  }
}

Fixed version (ground truth):
/** 
 * This methods checks all the previously configured substitutions and ensures that they are still related to existing node and matching in the topology.
 * @param deploymentTopology The deployment topology.
 * @param substitutedNodes The previous configuration for substitution nodes.
 * @param availableSubstitutions The substitutions provided by the location's node matching.
 */
private void removeUnsynchronizedSubstitutions(DeploymentTopology deploymentTopology,Map<String,String> substitutedNodes,Map<String,List<LocationResourceTemplate>> availableSubstitutions){
  if (deploymentTopology.getNodeTemplates() == null) {
    substitutedNodes.clear();
    return;
  }
  Iterator<Map.Entry<String,String>> mappingEntryIterator=substitutedNodes.entrySet().iterator();
  while (mappingEntryIterator.hasNext()) {
    Map.Entry<String,String> entry=mappingEntryIterator.next();
    if (deploymentTopology.getNodeTemplates().containsKey(entry.getKey())) {
      List<LocationResourceTemplate> availableSubstitutionsForNode=availableSubstitutions.get(entry.getKey());
      if (availableSubstitutionsForNode == null) {
        mappingEntryIterator.remove();
      }
 else {
        boolean substitutedTemplateExist=false;
        for (        LocationResourceTemplate availableSubstitutionForNode : availableSubstitutionsForNode) {
          if (availableSubstitutionForNode.getId().equals(entry.getValue())) {
            substitutedTemplateExist=true;
            break;
          }
        }
        if (!substitutedTemplateExist) {
          mappingEntryIterator.remove();
        }
      }
    }
 else {
      mappingEntryIterator.remove();
    }
  }
}