Spot May 2022

spot@lrde.epita.fr

5 participants
3 discussions

Alphabet abstraction
by Pierre 04 Jun '22

04 Jun '22

Dear Spot devs, Is there a way for Spot to perform the alphabet abstraction available in GOAL as triggered with the `-a` switch when invoking the `alphabet` command? I paste the GOAL documentation about it below. Thank you, Pierre. - Alphabet -NAMEalphabet - Manipulate the alphabet of an automaton or a game.SYNOPSISalphabet -s [ -ap ] FILE_OR_LVALalphabet -e EXPR [ -ap ] FILE_OR_LVALalphabet -c EXPR [ -ap ] FILE_OR_LVALalphabet -r EXPR [ -ap ] FILE_OR_LVALalphabet -a EXPR [-R | -A | -S EXPR | -P EXPR | -ap ] FILE_OR_LVALDESCRIPTIONManipulate the alphabet of an automaton (or a game). This operation is directly applied to the input automaton. The returned value is always the new alphabet of the automaton (or the new atomic propositions if -ap is present). -s Simply return the alphabet of the input automaton or game. -ap Return the atomic propositions (or classical symbols) instead of the alphabet. -e Expand the alphabet by a list of propositions. -c Contract the alphabet by removing a list of propositions. -r Rename the propositions based on a map from a proposition to its new name. -a Abstract the alphabet based on a map from a predicate to its definition. -R Retain the transition symbols in alphabet abstraction. -A Only annotate the transitions with properties specified by -S and -P. -S Specify the name of the property that will store the symbols on the transitions in alphabet abstraction. -P Specify the name of the property that will store the evaluations of the predicates in alphabet abstraction. EXAMPLE alphabet -e "r" aut.gff alphabet -c "p" aut.gff alphabet -r "p=>r,q=>s" aut.gff alphabet -a "r=>p/\q" aut.gff alphabet -a "r=>p/\q" -A -P "Predicates" aut.gff

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Building with Clang (on Mac)
by Shachar Itzhaky 17 May '22

17 May '22

Hello, There is a small hack in the lexer definition files `scanlt.ll` and `scanaut.ll` which fails the compilation on my Mac (macOS 12.3 arm64, Clang 13.1.6); they override `__STDC_VERSION__` which in turn wreaks havoc in the libc includes. I was able to fix the compilation using this small patch, which includes `libc-config.h` at the top in addition to `config.h`. I hope it would be useful to you. Cheers.

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Regarding LTL with past
by David Lidell 16 May '22

16 May '22

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Spot May 2022