APLAS 2021Solving Not-Substring Constraint withFlat AbstractionParosh Aziz Abdulla, Mohamed Faouzi Atig, Yu-Fang Chen, Bui Phi Diep, Lukás Holík, Denghang Hu, Wei-Lun Tsai, Zhilin Wu, Di-De YenDOI 10.1007/978-3-030-89051-3_17dblpBibTeXAbstract elided by the publisher.