runner consumes unbouded amount of RAM

[cyberthirst]

Describe the bug

• after a few minutes of fuzzing my fuzzing server crashes. from what i've inspected the runner process consumes unbounded amount of ram
• from the reasearch i've done so far it could be caused by the boa.loads - that's because loads fetches the environment singleton

Version Information

• OS: ubuntu LTS
• Fuzzer Version: fff4311
• Python Version: 3.10.10

Additional context

• it might be worth trying out to call this in the runner: https://github.com/vyperlang/titanoboa/blob/f2c883b50f3f72a417f2b9785146874016898968/boa/__init__.py#L88
  • maybe not do it with each contract as there's overhead to building the Env but every x iterations