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CS 3110 — Data Structures andFunctional Programming

Lecture 14Logic and Veri cation

6 March 2012

Software Bugs: Mariner 1

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“The omission of a hyphenin some mathematical datacaused the $18,500,000 fail-ure of a spacecraft launchedtoward Venus last Sunday,scientists disclosed today...”

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Software Bugs: Therac 25

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“A computer malfunctionapparently caused excessiveradiation doses for two can-cer patients at a treatmentcenter, causing the death ofoneman, a Texas of cial saidtoday...”

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Software Bugs: Stuxnet

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