Competed paths number becomes frozen

[igorganich]

Describe the bug
The number of completed paths stops changing at some point.
Due to this, traces with the -vvvvv option are not even displayed.
At the same time, the analysis continues, as the number of outstanding paths constantly increases and decreases

To Reproduce

1. checkout on
   igorganich/damn-vulnerable-defi-halmos@e4f554f
2. run halmos --solver-timeout-assertion 0 --function check_backdoor --loop 100
3. See frozen number of completed paths. It is 294 paths on my machine.

Environment:

• OS: ubuntu wsl
• Python version: Python 3.12.3
• Halmos and other dependency versions: halmos 0.2.4.dev6+g606ac51

[igorganich]

I suspect the problem is using vm.snapshotState() function and assuming that the state was changed after some symbolic call.
And if not - the path will not count as "completed". Since it can't find any completed path it looks like this number is frozen.

But It is hard to debug such paths. Maybe halmos should print even such non-reverted but stopped by "assume" paths?