Program: 83636
Project: 83636
Buggy source:
@Override public IValue resolve(MarkerList markers,IContext context){
  this.context=context;
  if (this.type != 0) {
    IType varType=this.variable.type;
    IValue value=this.variable.value;
    this.variable.value=value.resolve(markers,context);
    IType valueType=value.getType();
    if (valueType.isArrayType()) {
      this.type=ARRAY;
      if (varType == Types.UNKNOWN) {
        this.variable.type=varType=valueType.getElementType();
        if (varType == Types.UNKNOWN) {
          markers.add(this.variable.getPosition(),"String_Node_Str",this.variable.name.unqualified);
        }
      }
 else       if (!varType.classEquals(valueType.getElementType())) {
        Marker marker=markers.create(value.getPosition(),"String_Node_Str");
        marker.addInfo("String_Node_Str" + valueType);
        marker.addInfo("String_Node_Str" + varType);
      }
      Variable var=new Variable();
      var.type=Types.INT;
      var.name=$index;
      this.var1=var;
      var=new Variable();
      var.type=Types.INT;
      var.name=$length;
      this.var2=var;
      var=new Variable();
      var.type=valueType;
      var.name=$array;
      this.var3=var;
    }
 else     if (ITERABLE.isSuperTypeOf(valueType)) {
      this.type=ITERATOR;
      IType iterableType=valueType.resolveType(ITERABLE_TYPE);
      if (varType == Types.UNKNOWN) {
        this.variable.type=varType=iterableType;
        if (varType == Types.UNKNOWN) {
          markers.add(this.variable.getPosition(),"String_Node_Str",this.variable.name.unqualified);
        }
      }
 else       if (!varType.isSuperTypeOf(iterableType)) {
        Marker m=markers.create(value.getPosition(),"String_Node_Str");
        m.addInfo("String_Node_Str" + iterableType);
        m.addInfo("String_Node_Str" + varType);
      }
      Variable var=new Variable();
      var.type=valueType;
      var.name=$iterator;
      this.var1=var;
    }
 else     if (Types.STRING.isSuperTypeOf(valueType)) {
      this.type=STRING;
      if (varType == Types.UNKNOWN) {
        this.variable.type=varType=Types.CHAR;
      }
 else       if (!varType.classEquals(Types.CHAR)) {
        Marker marker=markers.create(value.getPosition(),"String_Node_Str");
        marker.addInfo("String_Node_Str" + varType);
      }
      Variable var=new Variable();
      var.type=Types.INT;
      var.name=$index;
      this.var1=var;
      var=new Variable();
      var.type=Types.INT;
      var.name=$length;
      this.var2=var;
      var=new Variable();
      var.type=valueType;
      var.name=$string;
      this.var3=var;
    }
  }
 else {
    if (this.variable != null) {
      this.variable.resolve(markers,context);
    }
    if (this.condition != null) {
      this.condition=this.condition.resolve(markers,this);
    }
    if (this.update != null) {
      this.update=this.update.resolve(markers,this);
    }
  }
  if (this.then != null) {
    this.then=this.then.resolve(markers,this);
  }
  this.context=null;
  return this;
}

Fixed version (ground truth):
@Override public IValue resolve(MarkerList markers,IContext context){
  this.context=context;
  if (this.type != 0) {
    IType varType=this.variable.type;
    IValue value=this.variable.value;
    this.variable.value=value=value.resolve(markers,context);
    IType valueType=value.getType();
    if (valueType.isArrayType()) {
      this.type=ARRAY;
      if (varType == Types.UNKNOWN) {
        this.variable.type=varType=valueType.getElementType();
        if (varType == Types.UNKNOWN) {
          markers.add(this.variable.getPosition(),"String_Node_Str",this.variable.name.unqualified);
        }
      }
 else       if (!varType.classEquals(valueType.getElementType())) {
        Marker marker=markers.create(value.getPosition(),"String_Node_Str");
        marker.addInfo("String_Node_Str" + valueType);
        marker.addInfo("String_Node_Str" + varType);
      }
      Variable var=new Variable();
      var.type=Types.INT;
      var.name=$index;
      this.var1=var;
      var=new Variable();
      var.type=Types.INT;
      var.name=$length;
      this.var2=var;
      var=new Variable();
      var.type=valueType;
      var.name=$array;
      this.var3=var;
    }
 else     if (ITERABLE.isSuperTypeOf(valueType)) {
      this.type=ITERATOR;
      IType iterableType=valueType.resolveType(ITERABLE_TYPE);
      if (varType == Types.UNKNOWN) {
        this.variable.type=varType=iterableType;
        if (varType == Types.UNKNOWN) {
          markers.add(this.variable.getPosition(),"String_Node_Str",this.variable.name.unqualified);
        }
      }
 else       if (!varType.isSuperTypeOf(iterableType)) {
        Marker m=markers.create(value.getPosition(),"String_Node_Str");
        m.addInfo("String_Node_Str" + iterableType);
        m.addInfo("String_Node_Str" + varType);
      }
      Variable var=new Variable();
      var.type=valueType;
      var.name=$iterator;
      this.var1=var;
    }
 else     if (Types.STRING.isSuperTypeOf(valueType)) {
      this.type=STRING;
      if (varType == Types.UNKNOWN) {
        this.variable.type=varType=Types.CHAR;
      }
 else       if (!varType.classEquals(Types.CHAR)) {
        Marker marker=markers.create(value.getPosition(),"String_Node_Str");
        marker.addInfo("String_Node_Str" + varType);
      }
      Variable var=new Variable();
      var.type=Types.INT;
      var.name=$index;
      this.var1=var;
      var=new Variable();
      var.type=Types.INT;
      var.name=$length;
      this.var2=var;
      var=new Variable();
      var.type=valueType;
      var.name=$string;
      this.var3=var;
    }
 else {
      Marker m=markers.create(this.position,"String_Node_Str");
      m.addInfo("String_Node_Str" + varType);
      m.addInfo("String_Node_Str" + valueType);
    }
  }
 else {
    if (this.variable != null) {
      this.variable.resolve(markers,context);
    }
    if (this.condition != null) {
      this.condition=this.condition.resolve(markers,this);
    }
    if (this.update != null) {
      this.update=this.update.resolve(markers,this);
    }
  }
  if (this.then != null) {
    this.then=this.then.resolve(markers,this);
  }
  this.context=null;
  return this;
}