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Groups > comp.lang.c++ > #119174
| From | olcott <polcott333@gmail.com> |
|---|---|
| Newsgroups | comp.lang.c, comp.lang.c++ |
| Subject | Re: Can someone please verify the execution trace of this? |
| Date | 2024-05-20 10:13 -0500 |
| Organization | A noiseless patient Spider |
| Message-ID | <v2fpas$1pfh$4@dont-email.me> (permalink) |
| References | <v2b78t$2vima$1@dont-email.me> <v2fic3$3rvp3$1@gwaiyur.mb-net.net> |
Cross-posted to 2 groups.
On 5/20/2024 8:14 AM, Marcel Mueller wrote:
> Am 18.05.24 um 23:40 schrieb olcott:
>> In the above case a simulator is an x86 emulator that correctly emulates
>> at least one of the x86 instructions of D in the order specified by the
>> x86 instructions of D.
>>
>> This may include correctly emulating the x86 instructions of H in the
>> order specified by the x86 instructions of H thus calling H(D,D) in
>> recursive simulation.
>
> There is no recursion.
> H is an undefined reference. There is nothing to simulate.
>
> And even if H would be defined, the implementation of H might never call
> *x or *y.
>
>> Line 03: simulated D(D) invokes simulated H(D,D) that simulates D(D)
>>
>> *Simulation invariant*
>> D correctly simulated by H cannot possibly reach past its own line 03.
>
> So this is proven not to be true in general.
>
>
> Marcel
Here is the whole statement.
*Try to find any way that*
For every H/D pair of the template below where D correctly simulated
by pure function (thus computable function) H can possibly reach its
own final state at line 06 and halt.
typedef int (*ptr)(); // ptr is pointer to int function
00 int H(ptr p, ptr i);
01 int D(ptr p)
02 {
03 int Halt_Status = H(p, p);
04 if (Halt_Status)
05 HERE: goto HERE;
06 return Halt_Status;
07 }
08
09 int main()
10 {
11 H(D,D);
12 return 0;
13 }
In the above case a simulator is an x86 emulator that correctly emulates
at least one of the x86 instructions of D in the order specified by the
x86 instructions of D.
This may include correctly emulating the x86 instructions of H in the
order specified by the x86 instructions of H thus calling H(D,D) in
recursive simulation.
Execution Trace
Line 11: main() invokes H(D,D);
keeps repeating (unless aborted)
Line 01:
Line 02:
Line 03: simulated D(D) invokes simulated H(D,D) that simulates D(D)
Simulation invariant:
D correctly simulated by H cannot possibly reach past its own line 03.
For every H/D pair of the above template D correctly simulated by pure
function (thus computable function) H cannot possibly reach its own
final state at line 06 and halt.
--
Copyright 2024 Olcott "Talent hits a target no one else can hit; Genius
hits a target no one else can see." Arthur Schopenhauer
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Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 14:40 -0500
Re: Can someone please verify the execution trace of this? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-20 12:44 -0700
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 14:48 -0500
Re: Can someone please verify the execution trace of this? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-20 12:50 -0700
Re: Can someone please verify the execution trace of this? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-20 12:52 -0700
Re: Can someone please verify the execution trace of this? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-20 12:32 -0700
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 14:37 -0500
Re: Can someone please verify the execution trace of this? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-20 12:41 -0700
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 14:45 -0500
Re: Can someone please verify the execution trace of this? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-20 12:47 -0700
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 14:53 -0500
Re: Can someone please verify the execution trace of this? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-20 13:04 -0700
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 15:10 -0500
Re: Can someone please verify the execution trace of this? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-20 13:19 -0700
Re: Can someone please verify the execution trace of this? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-20 13:21 -0700
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 15:30 -0500
Re: Can someone please verify the execution trace of this? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-20 13:31 -0700
Re: Can someone please verify the execution trace of this? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-20 13:32 -0700
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 15:36 -0500
Re: Can someone please verify the execution trace of this? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-20 13:38 -0700
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 15:52 -0500
Re: Can someone please verify the execution trace of this? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-20 14:05 -0700
Re: Can someone please verify the execution trace of this? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-20 14:09 -0700
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 16:27 -0500
Re: Can someone please verify the execution trace of this? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-20 13:48 -0700
Re: Can someone please verify the execution trace of this? "Fred. Zwarts" <F.Zwarts@HetNet.nl> - 2024-05-20 10:10 +0200
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 09:51 -0500
Re: Can someone please verify the execution trace of this? Paavo Helde <eesnimi@osa.pri.ee> - 2024-05-20 18:05 +0300
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 10:11 -0500
Re: Can someone please verify the execution trace of this? Bonita Montero <Bonita.Montero@gmail.com> - 2024-05-20 17:17 +0200
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 11:07 -0500
Re: Can someone please verify the execution trace of this? "Fred. Zwarts" <F.Zwarts@HetNet.nl> - 2024-05-21 00:14 +0200
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 17:23 -0500
Re: Can someone please verify the execution trace of this? wij <wyniijj5@gmail.com> - 2024-05-20 20:37 +0800
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 10:02 -0500
Re: Can someone please verify the execution trace of this? wij <wyniijj5@gmail.com> - 2024-05-21 00:21 +0800
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 12:23 -0500
Re: Can someone please verify the execution trace of this? wij <wyniijj5@gmail.com> - 2024-05-21 02:23 +0800
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 14:07 -0500
Re: Can someone please verify the execution trace of this? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-05-20 19:23 -0700
Re: Can someone please verify the execution trace of this? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-05-20 19:31 -0700
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 22:58 -0500
Re: Can someone please verify the execution trace of this? "Fred. Zwarts" <F.Zwarts@HetNet.nl> - 2024-05-21 09:39 +0200
Re: Can someone please verify the execution trace of this? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-05-21 09:55 +0200
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-21 08:31 -0500
Re: Can someone please verify the execution trace of this? Bonita Montero <Bonita.Montero@gmail.com> - 2024-05-21 15:56 +0200
Can D correctly simulated by H reach its own line 06 and halt? olcott <polcott333@gmail.com> - 2024-05-21 09:09 -0500
Re: Can D correctly simulated by H reach its own line 06 and halt? Bonita Montero <Bonita.Montero@gmail.com> - 2024-05-21 20:01 +0200
Re: Can D correctly simulated by H reach its own line 06 and halt? olcott <polcott333@gmail.com> - 2024-05-21 13:09 -0500
Re: Can D correctly simulated by H reach its own line 06 and halt? Bonita Montero <Bonita.Montero@gmail.com> - 2024-05-21 20:13 +0200
Re: Can D correctly simulated by H reach its own line 06 and halt? olcott <polcott333@gmail.com> - 2024-05-21 13:24 -0500
Re: Can D correctly simulated by H reach its own line 06 and halt? Bonita Montero <Bonita.Montero@gmail.com> - 2024-05-21 20:39 +0200
Re: Can D correctly simulated by H reach its own line 06 and halt? olcott <polcott333@gmail.com> - 2024-05-21 13:48 -0500
Re: Can D correctly simulated by H reach its own line 06 and halt? Bonita Montero <Bonita.Montero@gmail.com> - 2024-05-22 06:40 +0200
Re: Can D correctly simulated by H reach its own line 06 and halt? olcott <polcott333@gmail.com> - 2024-05-21 23:46 -0500
Re: Can D correctly simulated by H reach its own line 06 and halt? Bonita Montero <Bonita.Montero@gmail.com> - 2024-05-22 18:29 +0200
Re: Can D correctly simulated by H reach its own line 06 and halt? olcott <polcott333@gmail.com> - 2024-05-22 08:52 -0500
Re: Can D correctly simulated by H reach its own line 06 and halt? Bonita Montero <Bonita.Montero@gmail.com> - 2024-05-22 12:01 +0200
Re: Can D correctly simulated by H reach its own line 06 and halt? olcott <polcott333@gmail.com> - 2024-05-21 23:37 -0500
Re: Can D correctly simulated by H reach its own line 06 and halt? Bonita Montero <Bonita.Montero@gmail.com> - 2024-05-22 06:29 +0200
D correctly simulated by H remains stuck in recursive simulation olcott <polcott333@gmail.com> - 2024-05-22 10:44 -0500
Re: D correctly simulated by H remains stuck in recursive simulation "Fred. Zwarts" <F.Zwarts@HetNet.nl> - 2024-05-22 18:27 +0200
Re: D correctly simulated by H remains stuck in recursive simulation wij <wyniijj5@gmail.com> - 2024-05-23 00:11 +0800
Re: D correctly simulated by H remains stuck in recursive simulation [good attempt] olcott <polcott333@gmail.com> - 2024-05-22 15:04 -0500
Re: D correctly simulated by H remains stuck in recursive simulation [good attempt] olcott <polcott333@gmail.com> - 2024-05-22 16:26 -0500
Re: D correctly simulated by H remains stuck in recursive simulation [good attempt] wij <wyniijj5@gmail.com> - 2024-05-23 05:35 +0800
Re: D correctly simulated by H remains stuck in recursive simulation olcott <polcott333@gmail.com> - 2024-05-22 16:56 -0500
Re: D correctly simulated by H remains stuck in recursive simulation "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-22 15:36 -0700
Re: D correctly simulated by H remains stuck in recursive simulation olcott <polcott333@gmail.com> - 2024-05-22 17:52 -0500
Re: D correctly simulated by H remains stuck in recursive simulation "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-22 18:33 -0700
Re: Can someone please verify the execution trace of this? Sam <sam@email-scan.com> - 2024-05-20 18:59 -0400
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 18:07 -0500
Re: Can someone please verify the execution trace of this? Sam <sam@email-scan.com> - 2024-05-20 19:21 -0400
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 18:27 -0500
Re: Can someone please verify the execution trace of this? Sam <sam@email-scan.com> - 2024-05-21 07:48 -0400
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-21 08:37 -0500
Re: Can someone please verify the execution trace of this? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-21 12:03 -0700
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-21 14:21 -0500
Re: Can someone please verify the execution trace of this? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-21 14:39 -0700
Re: Can someone please verify the execution trace of this? Sam <sam@email-scan.com> - 2024-05-21 17:55 -0400
Can D correctly simulated by H reach its own line 06 and halt? olcott <polcott333@gmail.com> - 2024-05-21 17:09 -0500
Re: Can D correctly simulated by H reach its own line 06 and halt? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-21 15:18 -0700
Re: Can D correctly simulated by H reach its own line 06 and halt? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-21 15:20 -0700
Re: Can D correctly simulated by H reach its own line 06 and halt? olcott <polcott333@gmail.com> - 2024-05-21 17:29 -0500
Re: Can D correctly simulated by H reach its own line 06 and halt? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-21 15:34 -0700
Re: Can D correctly simulated by H reach its own line 06 and halt? olcott <polcott333@gmail.com> - 2024-05-21 18:07 -0500
Re: Can D correctly simulated by H reach its own line 06 and halt? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-21 16:54 -0700
Re: Can D correctly simulated by H reach its own line 06 and halt? olcott <polcott333@gmail.com> - 2024-05-21 19:05 -0500
Re: Can D correctly simulated by H reach its own line 06 and halt? Sam <sam@email-scan.com> - 2024-05-21 21:31 -0400
Re: Can D correctly simulated by H reach its own line 06 and halt? olcott <polcott333@gmail.com> - 2024-05-21 20:43 -0500
Re: Can D correctly simulated by H reach its own line 06 and halt? Sam <sam@email-scan.com> - 2024-05-21 22:10 -0400
Re: Can D correctly simulated by H reach its own line 06 and halt? olcott <polcott333@gmail.com> - 2024-05-21 21:17 -0500
Re: Can D correctly simulated by H reach its own line 06 and halt? Sam <sam@email-scan.com> - 2024-05-21 22:20 -0400
Re: Can D correctly simulated by H reach its own line 06 and halt? olcott <polcott333@gmail.com> - 2024-05-21 21:22 -0500
Re: Can D correctly simulated by H reach its own line 06 and halt? olcott <polcott333@gmail.com> - 2024-05-21 23:03 -0500
Re: Can D correctly simulated by H reach its own line 06 and halt? olcott <polcott333@gmail.com> - 2024-05-22 08:53 -0500
Re: Can D correctly simulated by H reach its own line 06 and halt? Sam <sam@email-scan.com> - 2024-05-22 13:10 -0400
Re: Can D correctly simulated by H reach its own line 06 and halt? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-22 13:50 -0700
Re: Can D correctly simulated by H reach its own line 06 and halt? Sam <sam@email-scan.com> - 2024-05-22 07:01 -0400
Re: Can D correctly simulated by H reach its own line 06 and halt? Bonita Montero <Bonita.Montero@gmail.com> - 2024-05-22 13:50 +0200
Re: Can someone please verify the execution trace of this? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-20 21:00 -0700
Can D simulated by any H possibly reach its own line 06 and halt? olcott <polcott333@gmail.com> - 2024-05-20 23:22 -0500
Re: Can someone please verify the execution trace of this? Marcel Mueller <news.5.maazl@spamgourmet.org> - 2024-05-20 15:14 +0200
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 10:10 -0500
Re: Can someone please verify the execution trace of this? olcott <polcott333@gmail.com> - 2024-05-20 10:13 -0500
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