E-CE0007 — Internal invariant violation

Error Type	Compile Error
Phase	compiling the problem into an OMMX instance
Python exception	`RuntimeError` (builtin)

Message

Internal error: {message}.

This is a bug in JijModeling - please report it to the developers in community Discord (https://discord.gg/Km5dKF9JjG) with the full error output.

Cause

This is the compiler’s generic internal-invariant error, raised from many places during compilation (including constraint-hint processing) whenever the compiler reaches a state it considers impossible. For example, it is raised when an expression that constraint-hint processing expected to stand for a single decision variable turns out to evaluate to something else. The interpolated message describes which invariant was violated. It cannot be produced by normal use of the library.

Fix

This is a bug in JijModeling. Please report it at the JijModeling community on Discord together with the full error output and a minimal model that reproduces it.