Abnormal Test Failure with Pointer Generator in Rust Standard Library Verification

[xsxszab]

When using Kani's pointer generator feature to address one of the Rust standard library verification challenges, an unexpected test failure was encountered in this PR. This issue has been confirmed as a Kani bug based on comments here. This bug report serves as a reference for tracking the bug and making future fixes.

Example
At the moment, it is not possible to provide a minimal reproducible example, as the issue only exists in the context of the specific pull request. For details, please refer to the PR.