Kani does not detect UB for `ptr_offset_from` and `ptr_offset_from_unsigned`

[celinval]

#[kani::proof]
fn check_offset_from() {
    let val = 10u128;
    let ptr: *const u128 = &val;
    let ptr_oob: *const u128 = ptr.wrapping_add(10);
    // SAFETY: This is not safe!
    let _offset = unsafe { ptr_oob.offset_from(ptr) };
}

using the following command line invocation:

kani check_ub.rs

with Kani version: 0.56.0

I expected to see this happen: Verification fails due to UB detection

Instead, this happened: Verification succeeds