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Re: [tlaplus] Re: Model checking a mutually recursive definition of a tree

On 7/26/21 4:31 AM, Andrew Helwer wrote:
However this then caused TLC to output a novel (to me) error:

TLC threw an unexpected exception.
This was probably caused by an error in the spec or model.
See the User Output or TLC Console for clues to what happened.
The exception was a java.lang.ClassCastException
: class tlc2.tool.coverage.ActionWrapper cannot be cast to class tlc2.tool.coverage.OpApplNodeWrapper (tlc2.tool.coverage.ActionWrapper and tlc2.tool.coverage.OpApplNodeWrapper are in unnamed module of loader 'app')

This issue [1] has been fixed in the most up-to-date nightly [2].

As a workaround for previous versions of TLC, run TLC without the -coverage parameter. In the Toolbox, turn off profiling on the "TLC Options" page of the model editor.


[1] https://github.com/tlaplus/tlaplus/issues/649
[2] https://nightly.tlapl.us

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