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# [tlaplus] Re: "Uknown Operator" in refinement mapping

Hi, thank you for the response.
Here is a minimal example using the same hashmap spec and a very minimal SOSpec that gives me the same error.

- Åsmund

On Monday, April 6, 2020 at 11:24:34 PM UTC+2, loki der quaeler wrote:
Hi,

This sounds potentially like a parsing bug; could you provide a fully contained MODULE file in which this is reproducible?

Thanks - loki

On Monday, April 6, 2020 at 3:57:33 AM UTC-7, Åsmund Kløvstad wrote:
Hi,

I am working on a refinement mapping and getting an error I do not understand.

I'm attempting to show that SOSpec implements the spec hashmap and I've got the following in the module that contains SOspec:

(**************************)
(*Split-order spec        *)
(**************************)
SOSpec == SOInit /\ [][SONext]_<<keys, list, buckets, size, count>>

(*********)
(*A refinement mapping of the hashmap spec with the map defined by the SOFind action*)
(***********)
HashmapSpec == INSTANCE hashmap WITH map <- [k \in PossibleKeys |-> SOFind(k)]

(********************************)
(*Split-order implements hashmap*)
(********************************)
THEOREM SOSpec => HashmapSpec!SOSpec

The toolbox is giving me the error "Unknown Operator: SOSpec" after the bang on the last line. (And the same error if I try to check the property HashmapSpec!SOSpec with TLC)

It seems to me like SOSpec is very clearly defined a few lines earlier, so what does this error mean?

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Attachment: minimal.zip
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