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  ______    ______    _____      ___      ____    
 /_____//  /_   _//  /  ___||   / _ \\   |  _ \\  
 `____ `    -| ||-  | // __    / //\ \\  | |_| || 
 /___//     _| ||_  | \\_\ || |  ___  || | .  //  
 `__ `     /_____//  \____//  |_||  |_|| |_|\_\\  
 /_//      `-----`    `---`   `-`   `-`  `-` --`  
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Text this: Verification, Model Checking, and Abstract Interpretation