Program: 88658
Project: 88658
Buggy source:
public static List<GetCallOperation> addOperation(String[] names,EClassifier callerType,EClassifier returnType,EClassifier parmType,String parmName,boolean zeroArgToo,boolean singularNameReturnsOnlyOne,CallReturnType opType,DgEnvironmentFactory envFactory){
  ArrayList<GetCallOperation> ops=new ArrayList<GetCallOperation>();
  EParameter parm=EcoreFactory.eINSTANCE.createEParameter();
  parm.setName(parmName);
  parm.setEType(parmType);
  GetCallOperation op=null;
  boolean someEndWithS=false;
  boolean notAllEndWithS=false;
  if (singularNameReturnsOnlyOne) {
    for (    String name : names) {
      if (!Utils2.isNullOrEmpty(name)) {
        if (name.trim().substring(name.length() - 1).toLowerCase().equals("String_Node_Str")) {
          someEndWithS=true;
        }
 else {
          notAllEndWithS=true;
        }
      }
    }
  }
  for (  String name : names) {
    op=new GetCallOperation();
    op.resultType=opType;
    boolean endsWithS=false;
    boolean oneChar=false;
    if (someEndWithS && notAllEndWithS) {
      oneChar=name.trim().length() == 1;
      endsWithS=name.trim().substring(name.length() - 1).toLowerCase().equals("String_Node_Str");
      if (endsWithS || oneChar) {
        op.onlyOneForAll=false;
        op.onlyOnePer=false;
      }
 else {
        op.onlyOneForAll=false;
        op.onlyOnePer=true;
      }
    }
    DgOperationInstance.addOperation(name,"String_Node_Str",envFactory,callerType,returnType,op,parm);
    ops.add(op);
    if (zeroArgToo) {
      op=new GetCallOperation();
      op.resultType=opType;
      if (singularNameReturnsOnlyOne && someEndWithS && notAllEndWithS) {
        if (endsWithS || oneChar) {
          op.onlyOneForAll=false;
          op.onlyOnePer=false;
        }
 else {
          op.onlyOneForAll=false;
          op.onlyOnePer=true;
        }
      }
      DgOperationInstance.addOperation(name,"String_Node_Str",envFactory,callerType,returnType,op);
      ops.add(op);
    }
  }
  return ops;
}

Fixed version (ground truth):
public static List<GetCallOperation> addOperation(String[] names,EClassifier callerType,EClassifier returnType,EClassifier parmType,String parmName,boolean zeroArgToo,boolean singularNameReturnsOnlyOne,CallReturnType opType,DgEnvironmentFactory envFactory){
  ArrayList<GetCallOperation> ops=new ArrayList<GetCallOperation>();
  GetCallOperation op=null;
  boolean someEndWithS=false;
  boolean notAllEndWithS=false;
  if (singularNameReturnsOnlyOne) {
    for (    String name : names) {
      if (!Utils2.isNullOrEmpty(name)) {
        if (name.trim().substring(name.length() - 1).toLowerCase().equals("String_Node_Str")) {
          someEndWithS=true;
        }
 else {
          notAllEndWithS=true;
        }
      }
    }
  }
  for (  String name : names) {
    op=new GetCallOperation();
    op.resultType=opType;
    boolean endsWithS=false;
    boolean oneChar=false;
    EParameter parm=EcoreFactory.eINSTANCE.createEParameter();
    parm.setName(parmName);
    parm.setEType(parmType);
    if (someEndWithS && notAllEndWithS) {
      oneChar=name.trim().length() == 1;
      endsWithS=name.trim().substring(name.length() - 1).toLowerCase().equals("String_Node_Str");
      if (endsWithS || oneChar) {
        op.onlyOneForAll=false;
        op.onlyOnePer=false;
      }
 else {
        op.onlyOneForAll=false;
        op.onlyOnePer=true;
      }
    }
    DgOperationInstance.addOperation(name,"String_Node_Str",envFactory,callerType,returnType,op,parm);
    ops.add(op);
    if (zeroArgToo) {
      op=new GetCallOperation();
      op.resultType=opType;
      if (singularNameReturnsOnlyOne && someEndWithS && notAllEndWithS) {
        if (endsWithS || oneChar) {
          op.onlyOneForAll=false;
          op.onlyOnePer=false;
        }
 else {
          op.onlyOneForAll=false;
          op.onlyOnePer=true;
        }
      }
      DgOperationInstance.addOperation(name,"String_Node_Str",envFactory,callerType,returnType,op);
      ops.add(op);
    }
  }
  return ops;
}