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About

About

I'm currently a post-doctoral researcher at the HASLab unit of INESC TEC at the University of Minho, Portugal.

I've recently completed my joint PhD degree on computer science from the Universities of Minho, Aveiro and Porto, on a "Relational Approach to Bidirectional Transformation" under the supervision of Professor Alcino Cunha.

My research focuses on bridging the gap between formal methods and software engineering through the development of lightweight approaches and techniques, with the goal of improving the overall quality of software products. Current research topics include trustworthy software design frameworks and safety validation of robotic software.

Interest
Topics
Details

Details

  • Name

    Nuno Moreira Macedo
  • Role

    Assistant Researcher
  • Since

    01st November 2011
  • Nationality

    Portugal
  • Contacts

    +351253604440
    nuno.m.macedo@inesctec.pt
003
Publications

2020

Validating the Hybrid ERTMS/ETCS Level 3 concept with Electrum

Authors
Cunha, A; Macedo, N;

Publication
International Journal on Software Tools for Technology Transfer

Abstract
This paper reports on the development of a formal model for the Hybrid ERTMS/ETCS Level 3 concept in Electrum, a lightweight formal specification language that extends Alloy with mutable relations and temporal logic operators. We show how Electrum and its Analyzer can be used to perform scenario exploration to validate this model, namely to check that all the operational scenarios described in the reference document are admissible, and to reason about expected safety properties, which can be easily specified and model checked for arbitrary track configurations. We also show how the Analyzer can be used to depict scenarios (and counter-examples) in a graphical notation that is logic-agnostic, making them understandable by stakeholders without expertise in formal specification. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.

2020

Validating Multiple Variants of an Automotive Light System with Electrum

Authors
Cunha, A; Macedo, N; Liu, C;

Publication
Rigorous State-Based Methods - 7th International Conference, ABZ 2020, Ulm, Germany, May 27-29, 2020, Proceedings

Abstract

2020

Experiences on Teaching Alloy with an Automated Assessment Platform

Authors
Macedo, N; Cunha, A; Pereira, J; Carvalho, R; Silva, R; Paiva, ACR; Ramalho, MS; Silva, DC;

Publication
Rigorous State-Based Methods - 7th International Conference, ABZ 2020, Ulm, Germany, May 27-29, 2020, Proceedings

Abstract

2019

Static-Time Extraction and Analysis of the ROS Computation Graph

Authors
Santos, A; Cunha, A; Macedo, N;

Publication
Proceedings - 3rd IEEE International Conference on Robotic Computing, IRC 2019

Abstract
The Robot Operating System (ROS) is one of the most popular open source robotic frameworks, and has contributed significantly to the fast development of robotics. Even though ROS provides many ready-made components, a robotic system is inherently complex, in particular regarding the architecture and orchestration of such components. Availability and analysis of a system's architecture at compile time is fundamental to ease comprehension and development of higher-quality software. However, ROS developers have to overcome this complexity relying mostly on testing and runtime visualisers. This work aims to enhance static-time support by proposing, firstly, a metamodel to describe the software architecture of ROS systems (the ROS Computation Graph) and, secondly, model extraction and visualisation tools for such architectural models. The provided tools allow users to specify custom-made queries over these models, enabling the static verification of relevant properties that had to be (manually) checked at runtime before. © 2019 IEEE.

2019

Simplifying the Analysis of Software Design Variants with a Colorful Alloy

Authors
Liu, C; Macedo, N; Cunha, A;

Publication
Dependable Software Engineering. Theories, Tools, and Applications - 5th International Symposium, SETTA 2019, Shanghai, China, November 27-29, 2019, Proceedings

Abstract
Formal modeling and automatic analysis are essential to achieve a trustworthy software design prior to its implementation. Alloy and its Analyzer are a popular language and tool for this task. Frequently, rather than a single software artifact, the goal is to develop a full software product line (SPL) with many variants supporting different features. Ideally, software design languages and tools should provide support for analyzing all such variants (e.g., by helping pinpoint combinations of features that could break a property), but that is not currently the case. Even when developing a single artifact, support for multi-variant analysis is desirable to explore design alternatives. Several techniques have been proposed to simplify the implementation of SPLs. One such technique is to use background colors to identify the fragments of code associated with each feature. In this paper we propose to use that same technique for formal design, showing how to add support for features and background colors to Alloy and its Analyzer, thus easing the analysis of software design variants. Some illustrative examples and evaluation results are presented, showing the benefits and efficiency of the implemented technique. © Springer Nature Switzerland AG 2019.

Supervised
thesis

2019

Safety Verification for ROS Applications

Author
André Filipe Faria dos Santos

Institution
UP-FCUP

2019

Aplicação de Técnicas de Análise Formal a Software Robótico

Author
Gonçalo Nuno Esteves Duarte

Institution
UM

2019

Lightweight Trustworthy High-level Software Design

Author
Chong Liu

Institution
UP-FCUP

2018

Safety Verification for ROS Applications

Author
André Filipe Faria dos Santos

Institution
UM

2016

Safety Verification for ROS Applications

Author
André Filipe Faria dos Santos

Institution
UM