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From: "Fred. Zwarts" <F.Zwarts@HetNet.nl>
Newsgroups: comp.theory,sci.logic
Subject: Re: D correctly simulated by H proved for THREE YEARS --- rewritten
Date: Sat, 15 Jun 2024 11:03:55 +0200
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Op 14.jun.2024 om 22:46 schreef olcott:
> On 6/14/2024 3:03 PM, Fred. Zwarts wrote:
>> Op 14.jun.2024 om 21:18 schreef olcott:
>>> On 6/14/2024 2:00 PM, Fred. Zwarts wrote:
>>>> Op 14.jun.2024 om 14:49 schreef olcott:
>>>>> I ran the actual code to verify the facts.
>>>>> HH1(DD,DD) does not have a pathological relationship to its input
>>>>> thus this input terminates normally.
>>>>
>>>> Your terminology is confusing. What you call a "pathological
>>>> relationship" is that H must simulate itself.
>>>>
>>>
>>> *CONVENTIONAL TERMINOLOGY*
>>> For any program H that might determine whether programs halt, a
>>> "pathological" program D, called with some input, can pass its own
>>> source and its input to H and then specifically do the opposite of what
>>> H predicts D will do. No H can exist that handles this case.
>>> https://en.wikipedia.org/wiki/Halting_problem
>>
>> The problem is that your simulator does not even reach the
>> "pathological" part of D.
>
> That is not the problem that is the criterion measure of a solution.
You are using the wrong criterion, because this wrong criterion also
also applies to other programs, without a "pathological" part.
int main()
{
return H(main, 0);
}
where you proved that H reports a false negative.
So, your criterion has no relation with "pathological" programs.
>
> _D()
> [00000cfc](01) 55 push ebp
> [00000cfd](02) 8bec mov ebp,esp
> [00000cff](03) 8b4508 mov eax,[ebp+08]
> [00000d02](01) 50 push eax ; push D
> [00000d03](03) 8b4d08 mov ecx,[ebp+08]
> [00000d06](01) 51 push ecx ; push D
> [00000d07](05) e800feffff call 00000b0c ; call H
> [00000d0c](03) 83c408 add esp,+08
> [00000d0f](02) 85c0 test eax,eax
> [00000d11](02) 7404 jz 00000d17
> [00000d13](02) 33c0 xor eax,eax
> [00000d15](02) eb05 jmp 00000d1c
> [00000d17](05) b801000000 mov eax,00000001
> [00000d1c](01) 5d pop ebp
> [00000d1d](01) c3 ret
> Size in bytes:(0034) [00000d1d]
Nice try, but completely beside the point.
Are you really unable to see this has no relation with a "pathological"
program that contradicts the result of H?
The only thing you have done so far is proving that no H exists that
correctly simulates itself up to its final state and therefore it is
unable to see the full behaviour of its input, because it always
prematurely aborts the simulation one cycle too early.
If you don't understand such simple facts, discussion makes no sense.