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JS evaluate mod on negative numbers wrong #8

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d1m0 opened this issue May 19, 2017 · 0 comments
Open

JS evaluate mod on negative numbers wrong #8

d1m0 opened this issue May 19, 2017 · 0 comments

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@d1m0
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d1m0 commented May 19, 2017

JS semantics differ from boogie, z3, and sanity when evaluating (-1 mod *). For example
(-1 mod 3) evaluates to -1 in JS, and to 2 in boogie/z3. This is a big problem for mod levels. May need a different evaluation scheme in the frontend
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