LaViT: LMNtal Visual Tools

The LaViT IDE should be quite easy to use.

around

The upper-left pane is for editing programs, while the upper-right pane shows system output. To run your program, use one of the following buttons on the lower-left pane.
Before writing your own program, it is recommended to start with examples in the 'demo' folder found in the explorer menu on the left.

SLIM:
Run the program (LMNtal source or intermediate code) using the SLIM runtime. Options can be specified by clicking the 'Option' tab and choosing options under 'SLIM Options' . Options most commonly used include:
  • --nd: nondeterministic execution mode for state space construction
  • -t: trace mode: In ordinary execution mode, prints execution steps. In nondeterministic execution mode, prints individual states and state transitions of the state space
  • --use-builtin-rule: enables arithmetic in the right-hand side of rules
  • --hl: use hyperlinks
Details of all SLIM options can be viewed by specifying the --help option in the text box under 'SLIM Options' and running SLIM.
UNYO & Graphene:
Invoke the UNYO-UNYO visualizer (using the Java runtime) and Graphene visualizer (using SLIM).
StateViewer:
Visualize and browse the state space of the program. States and state transitions can be browsed by clicking the state transition diagram and specifying appropriate options in the lower-right pane.
StateViewer internally runs SLIM with the --nd (nondeterministic execution) option. Other options given to SLIM can be specified by clicking the 'Option' tab and choosing options under 'StateViewer SLIM Options' .
Compile:
Invoke the LMNtal compiler to generate intermediate code. Used when you wish to view the intermediate code.

LTL Model Checking

To model-check your program, click the LTL model check tab of the upper-right pane,

right,around

and proceed as follows:

  • Define propositional symbols that represent properties of states (using the syntax of the left-hand sides of rewrite rules).
  • Specify an LTL formula representing the property you wish to check.
  • Press the Translate button to compile the formula to a Buchi automaton.
    (Note: for this to work, ltl2ba must have been installed, as described in the Download page.)
  • Press the slim --ltl (or slim --ltl-all or LTL StateViewer) button to check the specified property.
  • Options given to SLIM for LTL model checking can be specified by clicking the 'Option' tab and choosing options under 'LTL Model Check SLIM Options' .

Examples of propositional symbols and LTL formulas can be found by opening the programs under the demo/ltl directory of the distribution.

You can save and load the set of propositional symbols and a LTL formula (that can be numbered from 0 to 9) using the "LTL File" feature on the lower-right.

For further details, see LaViT (in Japanese).

LMNtal Java

The old page describing the use of LMNtal Java has been moved. See How to Use LMNtal Java for details.


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Last-modified: 2019-05-27 (Mon) 13:51:30 (170d)