esbmc.py

from typing import Generic, List, Dict, Optional, Union, Tuple, Any
import random
import time

# ESBMC verification functions
def nondet_int() -> int:
    """Return a non-deterministic integer."""
    return random.randint(-2**31, 2**31-1)  # Simulated for Python execution

def nondet_uint64() -> int:
    """Return a non-deterministic integer."""
    return random.randint(-2**64, 2**64-1)  # Simulated for Python execution

def __ESBMC_assume(cond: bool) -> None:
    """Assume a condition is true."""
    if not cond:
        raise AssertionError("Assumption violated")

def __ESBMC_assert(cond: bool, msg: str = "") -> None:
    """Assert a condition is true."""
    assert cond, msg
    
def __VERIFIER_nondet_int():
    """Simulates a non-deterministic integer value."""
    return random.randint(-100, 100)  # Adjust limits if necessary

def __VERIFIER_nondet_bool():
    """Simulates a non-deterministic Boolean value."""
    return bool(random.randint(0, 1))

def nondet_bool():
    """Simulates a non-deterministic Boolean value."""
    return True 

# Dataclass support
def frozen_dataclass(cls):
    """Decorator to create an immutable dataclass."""
    return dataclass(frozen=True)(cls)

# List comprehension support
def list_comp(iterable, predicate=None, transform=None):
    """Helper for list comprehensions."""
    result = []
    for item in iterable:
        if predicate is None or predicate(item):
            result.append(transform(item) if transform else item)
    return result

# Dict comprehension support
def dict_comp(iterable, key_func, value_func, predicate=None):
    """Helper for dictionary comprehensions."""
    result = {}
    for item in iterable:
        if predicate is None or predicate(item):
            result[key_func(item)] = value_func(item)
    return result

# Thread simulation support
class Thread:
    def __init__(self):
        self.running = False

    def start(self):
        self.running = True
        self.run()

    def run(self):
        pass

    def join(self):
        self.running = False

# Basic publish/subscribe support
class Topic:
    def __init__(self, name: str, type_: type):
        self.name = name
        self.type = type_
        self.callbacks = []

    def publish(self, msg):
        if not isinstance(msg, self.type):
            raise TypeError(f"Message must be of type {self.type}")
        for callback in self.callbacks:
            callback(msg)

    def subscribe(self, callback):
        self.callbacks.append(callback)