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lbtt/NEWS
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lbtt/NEWS
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lbtt NEWS -- history of user-visible changes. 01 Oct 2002
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Copyright (C) 2002 Heikki Tauriainen
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Permission is granted to anyone to make or distribute verbatim copies
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of this document as received, in any medium, provided that the
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copyright notice and this permission notice are preserved.
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Permission is granted to distribute modified versions
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of this document, or of portions of it, under the above conditions,
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provided also that they carry prominent notices stating who last
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changed them.
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Please send bug reports to <heikki.tauriainen@hut.fi>.
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Version 1.0.1
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* This release does not add new functionality to the program apart from
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some bug fixes and changes to sources to make them more compatible
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with versions 3.1.x and 3.2 of gcc.
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Version 1.0.0
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* lbtt is now packaged using GNU Autotools.
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* The distribution includes sources for documentation that can be
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built in `info', `dvi' and `html' formats using GNU texinfo. The
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documentation is also available at the program's home page at
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<http://www.tcs.hut.fi/%7Ehtauriai/lbtt/>.
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* lbtt now has direct support for the following binary LTL formula
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operators:
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---------------------------------------------------------------
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operator symbol used in input symbol used in
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files for LTL-to-Büchi messages
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translators
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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logical "exclusive or"
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^ xor
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temporal "weak until"
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W W
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temporal "strong release" (dual of "weak until")
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M M
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temporal "before"
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B B
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The ^ operator is also accepted in the transition guard formulas of the
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Büchi automata that are given to lbtt as input.
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Please see the included documentation for a reference on the exact
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semantics of these operators.
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* Changes in program behavior:
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- The default priority for LTL formula operators is now 0 (instead of
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10 as in previous versions).
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- The default interval for changing state spaces is now one test round
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(instead of 10 as in previous versions).
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- The sequences of random formulas and state spaces generated by lbtt
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should now be independent of each other, i.e., changing the formula
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generation parameters does not affect the sequence of generated state
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spaces and vice versa. Unfortunately, the changes required to
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implement this functionality make the test sequences obtained using
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previous versions of the tool irreproducible with version 1.0.0. In
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addition, the random seed must now be set separately for the formula
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and state space generation algorithms.
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* Changes in program configuration:
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- lbtt supports the following new configuration file and command line
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options (`O' -- command line option, `C' -- equivalent configuration
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file option (SectionName.OptionName), `D' -- description):
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O: --[no]comparisontest
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C: GlobalOptions.ComparisonTest = Yes | No
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D: Enable or disable the model checking result cross-comparison
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test
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O: --[no]consistencytest
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C: GlobalOptions.ConsistencyTest = Yes | No
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D: Enable or disable the model checking result consistency test
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O: --[no]intersectiontest
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C: GlobalOptions.IntersectionTest = Yes | No
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D: Enable or disable the Büchi automata intersection emptiness
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test
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O: --profile
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D: Disable all of the above automata correctness tests
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O: --skip=N
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D: Skip the first N test rounds
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O: --nogeneratennf
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C: FormulaOptions.GenerateMode = Normal
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D: Do not force random formulas to be generated in negation
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normal form
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O: --nooutputnnf
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C: FormulaOptions.OutputMode = Normal
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D: Do not rewrite LTL formulas into negation normal form before
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passing them to LTL-to Büchi translators
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O: --quiet, --silent
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D: Run all tests silently without interruption
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O: --showconfig
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D: Display program configuration and exit
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O: --showoperatordistribution
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D: Compute the expected distribution of random formula operators
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and display the distribution with other configuration
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information
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O: --xorpriority=PRIORITY
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C: FormulaOptions.XorPriority = PRIORITY
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D: Set priority for the logical "exclusive or" operator
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O: --weakuntilpriority=PRIORITY
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C: FormulaOptions.WeakUntilPriority = PRIORITY
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D: Set priority for the temporal "weak until" operator
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O: --strongreleasepriority=PRIORITY
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C: FormulaOptions.StrongReleasePriority = PRIORITY
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D: Set priority for the temporal "strong release" operator
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O: --beforepriority=PRIORITY
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C: FormulaOptions.BeforePriority = PRIORITY
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D: Set priority for the temporal "before" operator
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- The following configuration file and command line options have been
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renamed in lbtt version 1.0.0:
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Command line options:
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--synchronousproduct => --modelcheck
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--localproduct => --localmodelcheck
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--globalproduct => --globalmodelcheck
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--randomseed => --formularandomseed,
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--statespacerandomseed
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--formulalength => --formulasize
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--vpriority => --releasepriority
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Configuration file options:
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GlobalOptions.FormulaChangeInterval
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=> FormulaOptions.ChangeInterval
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GlobalOptions.StateSpaceChangeInterval
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=> StateSpaceOptions.ChangeInterval
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GlobalOptions.SynchronousProduct
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=> GlobalOptions.ModelCheck
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GlobalOptions.RandomSeed => FormulaOptions.RandomSeed
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StateSpaceOptions.RandomSeed
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FormulaOptions.Length => FormulaOptions.Size
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FormulaOptions.VPriority => FormulaOptions.ReleasePriority
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Please see the included documentation for more information on these
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options.
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* Changes in the user command interface:
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- lbtt's internal command interface now supports redirecting the
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output of some internal commands to a pipe to be processed by an
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external program. This can be achieved by ending the command line
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with `| <command>'.
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- If using random or enumerated paths as state spaces for the tests,
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the user commands `resultanalysis' and `eval' now support referring
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to results computed using lbtt's internal model checking algorithm.
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- The tool includes a new user command `consistencyanalysis' that can
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be used for analyzing failures in the model checking result
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consistency check.
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- The user command `resultanalysis' now accepts an optional state
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space identifier which can be used to force the analysis to be
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performed in a certain state of the state space.
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- The user command `pathinconsistencies' has been removed. (The `eval'
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command provides equivalent functionality.)
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- lbtt now supports the GNU readline library that provides command
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line editing enhancements when using the user commands. The support
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can be optionally disabled by running the `configure' script with
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the parameter `--without-readline'.
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* The additional programs `aasa_lbt' and `spin_lbt' have been replaced with
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a common `lbtt-translate' utility. This program does not implement an
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LTL-to-Büchi translation algorithm, however; a free LTL-to-Büchi
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translator that provides similar functionality to the `aasa_lbt' tool
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included in previous lbtt releases can be obtained via
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<http://www.tcs.hut.fi/Software/maria/tools/lbt/>.
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