Consistency Errors

A consistency error occurs when two otherwise valid values or operations have been specified that are inconsistent with each other. For example, if two modules each import the same predicate from the other, that is a consistency error.

The SICStus_Error term associated with a consistency error is

     consistency_error(Goal, Culprit1, Culprit2, Message)
One of the conflicting values/operations.
The other conflicting value/operation..
Additional information, or 0, or ''.

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