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Tiny Symbolic Execution Engine

Introduction

This repository contains a basic implementation of a symbolic execution engine using Python and Z3. It's designed as an educational tool to demonstrate the core concepts of symbolic execution in software analysis.

Description

The symbolic execution engine provided in this project uses Python to symbolically execute a given program, using Z3 as a theorem prover to solve constraints and explore different execution paths.

Installation

To use this symbolic execution engine, you need to have Python installed along with the Z3 theorem prover. You can install Z3 using pip:

pip install z3-solver

Usage

def test_function(x, y):
    z = 2 * x
    if z == y:
        if y == x + 10:
            assert False


if __name__ == "__main__":
    engine = TinySymbolicExecutionEngine()
    # Create symbolic variables for the function arguments using Z3
    x = BitVec("x", 32)
    y = BitVec("y", 32)
    engine.execute_path(test_function, x, y)
Assertion failed under: [y = 20, x = 10]