The 7th RISC-V Workshop has rejected my talk on riscv-formal. (They "accepted it as a poster".)
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Other peoples talks have been reduced from 24 minutes to 12 minutes, but not mine. My talk just didn't make the cut.
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But the preliminary agenda lists a full 24 minutes talk from the MIT group working on formal methods for RISC-V. Sure, whatever.
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Replying to @whitequark
Best thing is: The MIT model has at least one bug that riscv-formal would catch immediately. But they don't know that because they 1/2
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Replying to @oe1cxw @whitequark
have not formally verified their model against ANYTHING yet. I'm not telling them bc I want to "find it with riscv-formal" first. :) 2/2
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Replying to @oe1cxw @whitequark
But I can't yet. Because so far they can't interface their model with anything that would actually allow me to use formal methods on it..
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Replying to @oe1cxw @whitequark
You’re saying there is a bug in the spec they are verifying against?
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Replying to @alastair_d_reid @whitequark
Yes. But they aren't verifying their spec against anything (yet). Their primary focus is on proofing abstract properties of the ISA..
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And that is also very important of course, but I think the first step should be proving that the spec actually matches the implementation.
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Also, their spec doesn't handle things like illegal instructions yet. It triggers a "fromJust Nothing" that terminates their Haskell app.
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