diff options
Diffstat (limited to 'Test/VerifyThis2015')
| -rw-r--r-- | Test/VerifyThis2015/Problem2.dfy | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Test/VerifyThis2015/Problem2.dfy b/Test/VerifyThis2015/Problem2.dfy index 1c7deffd..86b4a019 100644 --- a/Test/VerifyThis2015/Problem2.dfy +++ b/Test/VerifyThis2015/Problem2.dfy @@ -315,7 +315,7 @@ lemma GcdDecrease(a: int, b: int) ensures Gcd(a, b) == Gcd(a - b, b)
{
var k := Gcd(a - b, b);
- assert DividesBoth(k, a-b, b) && forall m :: DividesBoth(m, a-b, b) ==> m <= k;
+ assert DividesBoth(k, a-b, b) && forall m, mm :: mm == a - b ==> DividesBoth(m, mm, b) ==> m <= k; // WISH: auto-generate 'mm'
var n := DividesProperty(k, a-b);
assert n*k == a-b;
var p := DividesProperty(k, b);
|