RT Journal Article T1 FMSans: An efficient approach for constraints removal and parallel analysis of feature models A1 Horcas-Aguilera, José Miguel A1 Ballesteros-Gómez, Joaquín A1 Pinto-Alarcón, Mónica A1 Fuentes-Fernández, Lidia K1 Soporte lógico de sistemas K1 Lenguajes de programación AB Cross-tree constraints help to compact feature models by using arbitrary propositional logic formulas, which efficiently capture interdependencies between features. However, the existence of these constraints increases the complexity of reasoning about feature models, whether we use SAT solvers or compile the model to a binary decision diagram for efficient analyses. Although some works have tried to refactor constraints to eliminate them, they deal only with simple constraints (i.e., requires and excludes) or require introducing an additional set of features, increasing the size and complexity of the resulting feature model. This paper presents an approach that eliminates all the cross-tree constraints in regular boolean feature models, including arbitrary constraints in propositional logic formulas. Our approach for removing constraints consists of splitting the semantics of feature models into orthogonal disjoint feature subtrees, which are then analyzed in parallel to alleviate the exponential blow-up in memory of the resulting feature tree. We propose a codification of the constraints and define and analyze different heuristics for constraints ordering to reduce the complexity of identifying the valid disjoint subtrees when removing constraints. PB Elsevier SN 1873-1228 YR 2025 FD 2025-04-10 LK https://hdl.handle.net/10630/38488 UL https://hdl.handle.net/10630/38488 LA eng NO Horcas, J. M., Ballesteros, J., Pinto, M., & Fuentes, L. (2023). FMSans: An efficient approach for constraints removal and parallel analysis of feature models. ACM International Conference Proceeding Series, A-1, 99–110. NO Funding for open access charge: Universidad de Málaga / CBUA DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 21 ene 2026