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simplify: remove an incorect SERE simplification

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* src/ltlvisit/simplify.cc, doc/tl/tl.tex: Remove the rule.
* src/ltltest/reduc0.test: Add a regression test.
* src/ltltest/reduccmp.test: Adjust test cases for its removal.
* NEWS: Mention it.
This commit is contained in:
Alexandre Duret-Lutz 2014-12-04 22:50:43 +01:00
parent 88da1ad84d
commit 1156866630
5 changed files with 26 additions and 31 deletions
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5
doc/tl/tl.tex
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@ -1570,8 +1570,9 @@ Here are basic the rewritings for the weak closure and its negation:
\nsere{r_1;r_2}&\equiv \nsere{r_1}\AND\nsere{r_2}\quad\text{if~}\varepsilon\VDash r_1\land\varepsilon\VDash r_2\\
\sere{b;r}&\equiV b\AND\X\sere{r}&
\nsere{b;r}&\equiV (\NOT b)\OR\X\nsere{r}\\
\sere{b\STAR{};r}&\equiv b\W\sere{r}&
\nsere{b\STAR{};r}&\equiv (\NOT b)\M\nsere{r}\\
% These two would be correct only if $r$ is satisfiable.
% \sere{b\STAR{};r}&\equiv b\W\sere{r}&
% \nsere{b\STAR{};r}&\equiv (\NOT b)\M\nsere{r}\\
\sere{b\STAR{\mvar{i}..\mvar{j}};r}&\equiV \underbrace{b\AND \X(b\ldots}_{\mathclap{i\text{~occurences of~}b}}\AND\X\sere{b\STAR{\mvar{0}..\mvar{j-i}}\CONCAT r})&
\nsere{b\STAR{\mvar{i}..\mvar{j}};r}&\equiV \underbrace{(\NOT b)\OR \X((\NOT b)\ldots}_{\mathclap{i\text{~occurences of~}\NOT b}}\OR\X\nsere{b\STAR{\mvar{0}..\mvar{j-i}}\CONCAT r}) \\
\sere{b\STAR{\mvar{i}..\mvar{j}}}&\equiV \underbrace{b\AND \X(b\AND \X(\ldots b))}_{i\text{~occurences of~}b}&