main
test-branch
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Last change
on this file since beab7f2 was ea777aa, checked in by Alex Wilton <awilton@…>, 3 years ago |
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Moved examples, include, build_default.properties, common.xml, and README out from dev.civl.com into the root of the repo.
git-svn-id: svn://vsl.cis.udel.edu/civl/trunk@5704 fb995dde-84ed-4084-dfe6-e5aef3e2452c
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Property mode
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File size:
562 bytes
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| 1 | /* A non-trivial mimic of havocing an array slice using temporary
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| 2 | * variable and quantified assumptions */
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| 3 |
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| 4 | #include <pointer.cvh>
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| 5 | $input int N, M, I;
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| 6 | $assume(N > 0 && M > 0 && 0 < I && I < N);
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| 7 |
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| 8 | void havoc_slice(double (*a)[], int len, int start, int stop) {
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| 9 | double tmp[len];
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| 10 |
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| 11 | $copy(&tmp, a);
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| 12 | $havoc(a);
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| 13 | $assume(($forall (int j | (0 <= j && j < start) || (stop <= j && j < len))
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| 14 | (*a)[j] == tmp[j]));
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| 15 | }
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| 16 |
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| 17 | int main () {
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| 18 | double a[N*M];
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| 19 | double old_zero = a[0];
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| 20 |
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| 21 | havoc_slice(&a, N*M, I*M, (I+1)*M);
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| 22 | $assert(a[0] == old_zero);
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| 23 | return 0;
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| 24 | }
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