Program: 147270
Project: 147270
Buggy source:
public Conditional<Instruction> execute(FeatureExpr ctx,final ThreadInfo ti){
  StackFrame frame=ti.getTopFrame();
  Conditional<Integer> objref=frame.peek(ctx);
  return objref.mapf(ctx,new BiFunction<FeatureExpr,Integer,Conditional<Instruction>>(){
    @Override public Conditional<Instruction> apply(    FeatureExpr ctx,    Integer objref){
      if (objref == MJIEnv.NULL) {
      }
 else {
        boolean isValid=false;
        if (Types.isReferenceSignature(type)) {
          String t;
          if (Types.isArray(type)) {
            t=Types.getComponentTerminal(type);
          }
 else {
            t=type;
          }
          try {
            ti.resolveReferencedClass(t);
          }
 catch (          LoadOnJPFRequired lre) {
            return ti.getPC();
          }
        }
        ElementInfo e=ti.getElementInfo(objref);
        ClassInfo eci=e.getClassInfo();
        if (type.charAt(0) == '[') {
          String arrayType=type;
          ClassInfo cci=eci;
          while (true) {
            if (cci.isArray()) {
              cci=cci.getComponentClassInfo();
              arrayType=arrayType.substring(1);
            }
 else {
              break;
            }
            if (arrayType.charAt(0) != '[') {
              isValid=cci.isInstanceOf(arrayType);
              break;
            }
          }
        }
 else {
          isValid=e.getClassInfo().isInstanceOf(type);
        }
        if (!isValid) {
          return new One<>(new EXCEPTION(ClassCastException.class.getName(),e.getClassInfo().getName() + "String_Node_Str" + type));
        }
      }
      return getNext(ctx,ti);
    }
  }
);
}

Fixed version (ground truth):
public Conditional<Instruction> execute(FeatureExpr ctx,final ThreadInfo ti){
  StackFrame frame=ti.getTopFrame();
  Conditional<Integer> objref=frame.peek(ctx);
  return objref.mapf(ctx,new BiFunction<FeatureExpr,Integer,Conditional<Instruction>>(){
    @Override public Conditional<Instruction> apply(    FeatureExpr ctx,    Integer objref){
      if (objref == MJIEnv.NULL) {
      }
 else {
        boolean isValid=false;
        if (Types.isReferenceSignature(type)) {
          String t;
          if (Types.isArray(type)) {
            t=Types.getComponentTerminal(type);
          }
 else {
            t=type;
          }
          try {
            ti.resolveReferencedClass(t);
          }
 catch (          LoadOnJPFRequired lre) {
            return ti.getPC();
          }
        }
        ElementInfo e=ti.getElementInfo(objref);
        ClassInfo eci=e.getClassInfo();
        if (type.charAt(0) == '[') {
          String arrayType=type;
          ClassInfo cci=eci;
          while (true) {
            if (cci.isArray()) {
              cci=cci.getComponentClassInfo();
              arrayType=arrayType.substring(1);
            }
 else {
              break;
            }
            if (arrayType.charAt(0) != '[') {
              isValid=cci.isInstanceOf(arrayType);
              break;
            }
          }
        }
 else {
          isValid=e.getClassInfo().isInstanceOf(type);
        }
        if (!isValid) {
          return new One<>(new EXCEPTION(CHECKCAST.this,ClassCastException.class.getName(),e.getClassInfo().getName() + "String_Node_Str" + type));
        }
      }
      return getNext(ctx,ti);
    }
  }
);
}