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HeidyKhlaaf's profile
Dr Heidy Khlaaf (هايدي خلاف)
Dr Heidy Khlaaf (هايدي خلاف)
Dr Heidy Khlaaf (هايدي خلاف)
@HeidyKhlaaf

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Dr Heidy Khlaaf (هايدي خلاف)

@HeidyKhlaaf

Formal Verification (PhD in CS) + Climbing enthusiast | Research Consultant verifying safety-critical systems 👩🏽‍💻(☢️🚄✈️🚗).

London, UK
heidyk.com
Joined December 2011

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    Dr Heidy Khlaaf (هايدي خلاف)‏ @HeidyKhlaaf 15 Dec 2019
    • Report Tweet

    Dr Heidy Khlaaf (هايدي خلاف) Retweeted Conor White-Sullivan 🧢

    In the past three years of working on large safety critical systems, I've learned that verification isn't the real problem, but it's writing specifications. Don't @ me.https://twitter.com/Conaw/status/1206137383839649792 …

    Dr Heidy Khlaaf (هايدي خلاف) added,

    Conor White-Sullivan 🧢 @Conaw
    38. Provably correct doesn't mean it works
    Show this thread
    11:06 AM - 15 Dec 2019
    • 49 Retweets
    • 222 Likes
    • A/V Solove Sergey T Sander Spies 🕵️‍♂️ Josh Georgios Bakirtzis Matt Ranney chuuni dumbass ɹɐʎɯɐʞ Willy
    14 replies 49 retweets 222 likes
      1. New conversation
      2. Vasu Raman‏ @likeavass 15 Dec 2019
        • Report Tweet
        Replying to @HeidyKhlaaf

        Yessss this was pretty much the biggest insight (to me) from my PhD thesis work.

        1 reply 0 retweets 4 likes
      3. Dr Heidy Khlaaf (هايدي خلاف)‏ @HeidyKhlaaf 16 Dec 2019
        • Report Tweet
        Replying to @likeavass

        Do verification for a PhD, 5 years later, realize the real problem was specifications 😭

        2 replies 0 retweets 6 likes
      4. 2 more replies
      1. New conversation
      2. God rest ye merry, Scornflake Grrrl‏ @ScornflakeGrrrl 15 Dec 2019
        • Report Tweet
        Replying to @HeidyKhlaaf @JulianBirch

        Speaking as a procurement professional, writing specifications is the problem in pretty much anything.

        1 reply 0 retweets 4 likes
      3. Dr Heidy Khlaaf (هايدي خلاف)‏ @HeidyKhlaaf 15 Dec 2019
        • Report Tweet
        Replying to @ScornflakeGrrrl @JulianBirch

        Yup! And trying to make them formal is pretty much a nightmare.

        1 reply 0 retweets 5 likes
      4. 1 more reply
      1. Bob Bishop‏ @rbgidcouk 15 Dec 2019
        • Report Tweet
        Replying to @HeidyKhlaaf

        "Beware of bugs in the above code; I have only proved it correct, not tried it." -- Donald Knuth: Notes on the van Emde Boas construction of priority deques: An instructive use of recursion (1977)

        0 replies 0 retweets 7 likes
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      1. Drew Dean‏ @bicoastalddean 15 Dec 2019
        • Report Tweet
        Replying to @HeidyKhlaaf @justinesherry

        Concur: Formal methods are a spectrum. A formal proof is evidence in support of an assurance case, it is not the end of the story.

        0 replies 0 retweets 3 likes
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      1. ShriramKrishnamurthi‏ @ShriramKMurthi 16 Dec 2019
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        Replying to @HeidyKhlaaf

        That's why it's been the focus of my FM research for the past to years...

        0 replies 0 retweets 3 likes
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      1. New conversation
      2. victor yodaiken‏ @vyodaiken 15 Dec 2019
        • Report Tweet
        Replying to @HeidyKhlaaf @ncweaver

        All you need to do is describe the system vaguely in 2000000 lines of symbol dense formal logic that can't handle basic arithmetic and doesn't really mean anything anyways according to 30 years of Formal Methods Research.

        2 replies 0 retweets 3 likes
      3. Dr Heidy Khlaaf (هايدي خلاف)‏ @HeidyKhlaaf 15 Dec 2019
        • Report Tweet
        Replying to @vyodaiken @ncweaver

        This!

        0 replies 0 retweets 0 likes
      4. End of conversation
      1.  ✨ Lizard Queen (Pronouns: TRH-TheirRoyalHighness) ✨‏ @pvineetha 15 Dec 2019
        • Report Tweet
        Replying to @HeidyKhlaaf

         ✨ Lizard Queen (Pronouns: TRH-TheirRoyalHighness) ✨ Retweeted Dr Heidy Khlaaf (هايدي خلاف)

        Yes. And in whatever required contexts, writing specifications in ways that offer whatever pertinent Indicators of Compromise. And in ways one might meaningfully be able to triage safety/risk according to what has been compromised. And then not cry. 🙈 https://twitter.com/heidykhlaaf/status/1206289442484473856?s=21 …https://twitter.com/HeidyKhlaaf/status/1206289442484473856 …

         ✨ Lizard Queen (Pronouns: TRH-TheirRoyalHighness) ✨ added,

        Dr Heidy Khlaaf (هايدي خلاف) @HeidyKhlaaf
        In the past three years of working on large safety critical systems, I've learned that verification isn't the real problem, but it's writing specifications. Don't @ me. https://twitter.com/Conaw/status/1206137383839649792 …
        0 replies 1 retweet 0 likes
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