Ubuntu Manpage: lps2lts - generate an LTS from an LPS

Provided by: mcrl2_201409.0-1ubuntu3_amd64

NAME

       lps2lts - generate an LTS from an LPS

SYNOPSIS

       lps2lts [OPTION]... [INFILE [OUTFILE]]

DESCRIPTION

Generate an LTS from the LPS in INFILE and save the result to OUTFILE. If INFILE is not supplied, stdin
is used. If OUTFILE is not supplied, the LTS is not stored.

If the 'jittyc' rewriter is used, then the MCRL2_COMPILEREWRITER environment variable (default value:
'mcrl2compilerewriter') determines the script that compiles the rewriter, and MCRL2_COMPILEDIR (default
value: '.') determines where temporary files are stored.

Note that lps2lts can deliver multiple transitions with the same label betweenany pair of states. If this
is not desired, such transitions can be removed byapplying a strong bisimulation reducton using for
instance the tool ltsconvert.

The format of OUTFILE is determined by its extension (unless it is specified by an option). The supported
formats are:

'aut' for the Aldebaran format (CADP),
'dot' for the GraphViz format (no longer supported as input format),
'fsm' for the Finite State Machine format, or
'lts' for the mCRL2 LTS format If the jittyc rewriter is used, then the MCRL2_COMPILEREWRITER
environment variable (default value: mcrl2compilerewriter) determines the script that compiles the
rewriter, and MCRL2_COMPILEDIR (default value: '.') determines where temporary files are stored. Note
that lps2lts can deliver multiple transitions with the same label between any pair of states. If this is
not desired, such transitions can be removed by applying a strong bisimulation reducton using for
instance the tool ltsconvert.

OPTIONS

OPTION can be any of the following:

-aNAMES, --action=NAMES
detect and report actions in the transitions system that have action names from NAMES, a comma-
separated list. This is for instance useful to find (or prove the absence) of an action error. A
message is printed for every occurrence of one of these action names. With the -t flag traces
towards these actions are generated

-b[NUM], --bit-hash[=NUM]
use bit hashing to store states and store at most NUM states. This means that instead of keeping a
full record of all states that have been visited, a bit array is used that indicate whether or not
a hash of a state has been seen before. Although this means that this option may cause states to
be mistaken for others (because they are mapped to the same hash), it can be useful to explore
very large LTSs that are otherwise not explorable. The default value for NUM is approximately
2*10^8 (this corresponds to about 25MB of memory)

--cached
use enumeration caching techniques to speed up state space generation.

-c[NAME], --confluence[=NAME]
apply prioritization of transitions with the action label NAME.(when no NAME is supplied (i.e.,
'-c') priority is given to the action 'ctau'. To give priority to to tau use the flag -ctau. Note
that if the linear process is not tau-confluent, the generated state space is necessarily
branching bisimilar to the state space of the lps. The generation algorithm that is used does not
require the linear process to be tau convergent.

-D, --deadlock
detect deadlocks (i.e. for every deadlock a message is printed)

-F, --divergence
detect divergences (i.e. for every state with a divergence (=tau loop) a message is printed). The
algorithm to detect the divergences is linear for every state, so state space exploration becomes
quadratic with this option on, causing a state space exploration to become slow when this option
is enabled.

-yBOOL, --dummy=BOOL
replace free variables in the LPS with dummy values based on the value of BOOL: 'yes' (default) or
'no'

--error-trace
if an error occurs during exploration, save a trace to the state that could not be explored

--init-tsize=NUM
set the initial size of the internally used hash tables (default is 10000)

-lNUM, --max=NUM
explore at most NUM states

-mNAMES, --multiaction=NAMES
detect and report multiactions in the transitions system from NAMES, a comma-separated list. Works
like -a, except that multi-actions are matched exactly, including data parameters.

--no-info
do not add state information to OUTFILEWithout this option lps2lts adds state vector to the LTS.
This option causes this information to be discarded and states are only indicated by a sequence
number. Explicit state information is useful for visualisation purposes, for instance, but can
cause the OUTFILE to grow considerably. Note that this option is implicit when writing in the AUT
format.

-oFORMAT, --out=FORMAT
save the output in the specified FORMAT

--prune
use summand pruning to speed up state space generation.

-QNUM, --qlimit=NUM
limit enumeration of quantifiers to NUM variables. (Default NUM=1000, NUM=0 for unlimited).

-rNAME, --rewriter=NAME
use rewrite strategy NAME: 'jitty' jitty rewriting (default) 'jittyc' compiled jitty rewriting
'jittyp' jitty rewriting with prover

-sNAME, --strategy=NAME
explore the state space using strategy NAME: 'b', 'breadth' breadth-first search (default) 'd',
'depth' depth-first search 'p', 'prioritized' prioritize single actions on its first argument
being of sort Nat where only those actions with the lowest value for this parameter are selected.
E.g. if there are actions a(3) and b(4), a(3) remains and b(4) is skipped. Actions without a first
parameter of sort Nat and multactions with more than one action are always chosen (option is
experimental) 'q', 'rprioritized' prioritize actions on its first argument being of sort Nat (see
option --prioritized), and randomly select one of these to obtain a prioritized random simulation
(option is experimental) 'r', 'random' random simulation. Out of all next states one is chosen at
random independently of whether this state has already been observed. Consequently, random
simultation only terminates when a deadlocked state is encountered.

--suppress
in verbose mode, do not print progress messages indicating the number of visited states and
transitions. For large state spaces the number of progress messages can be quite horrendous. This
feature helps to suppress those. Other verbose messages, such as the total number of states
explored, just remain visible.

--timings[=FILE]
append timing measurements to FILE. Measurements are written to standard error if no FILE is
provided

--todo-max=NUM
keep at most NUM states in todo lists; this option is only relevant for breadth-first search,
where NUM is the maximum number of states per level, and for depth first search, where NUM is the
maximum depth

-t[NUM], --trace[=NUM]
Write a shortest trace to each state that is reached with an action from NAMES from option
--action, is a deadlock detected with --deadlock, or is a divergence detected with --divergence to
a file. No more than NUM traces will be written. If NUM is not supplied the number of traces is
unbounded.For each trace that is to be written a unique file with extension .trc (trace) will be
created containing a shortest trace from the initial state to the deadlock state. The traces can
be pretty printed and converted to other formats using tracepp.

-u, --unused-data
do not remove unused parts of the data specification

Standard options:

-q, --quiet
do not display warning messages

-v, --verbose
display short intermediate messages

-d, --debug
display detailed intermediate messages

--log-level=LEVEL
display intermediate messages up to and including level

-h, --help
display help information

--version
display version information

AUTHOR

       Written by Muck van Weerdenburg.

REPORTING BUGS

       Report bugs at <http://www.mcrl2.org/issuetracker>.

COPYRIGHT

       Copyright © 2014 Technische Universiteit Eindhoven.
       This is free software.  You may redistribute copies of it under the terms of the Boost  Software  License
       <http://www.boost.org/LICENSE_1_0.txt>.  There is NO WARRANTY, to the extent permitted by law.