Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?

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Sujet : Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?
De : polcott333 (at) *nospam* gmail.com (olcott)
Groupes : comp.lang.c++ comp.lang.c
Date : 24. May 2024, 15:08:52
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <v2q3h4$2b3fj$3@dont-email.me>
References : 1 2
User-Agent : Mozilla Thunderbird
On 5/24/2024 7:10 AM, Richard Harnden wrote:
On 23/05/2024 17:52, olcott wrote:
typedef int (*ptr)();  // ptr is pointer to int function in C
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       }
>
The above template refers to an infinite set of H/D pairs where D is
correctly simulated by pure function H. This was done because many
reviewers used the shell game ploy to endlessly switch which H/D was
being referred to.
>
*Correct Simulation Defined*
This is provided because every reviewer had a different notion of
correct simulation that diverges from this notion.
>
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); H(D,D) simulates lines 01, 02, and 03 of
D. This invokes H(D,D) again to repeat the process in endless recursive
simulation.
  So, you have: main -> H -> D -> H -> D -> ... -> H -> D until you run out of stack?
 No return statement is ever reached.
Line 3 never completes.
Halt_Status at line 3 never gets a value.
 </shrug>
 
Thanks.
Proving that D correctly simulated by H never reaches its final
state at line 06 and halts. Thus proving that the halting problem's
counter-example input D would be correctly determined to be non-halting
by its simulating termination analyzer H.
--
Copyright 2024 Olcott "Talent hits a target no one else can hit; Genius
hits a target no one else can see." Arthur Schopenhauer

Date Sujet#  Auteur
23 May 24 * Can you see that D correctly simulated by H remains stuck in recursive simulation?66olcott
23 May 24 +* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?7Marcel Mueller
23 May 24 i+* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?5olcott
23 May 24 ii`* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?4Bonita Montero
23 May 24 ii `* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?3olcott
24 May 24 ii  `* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?2Chris M. Thomasson
24 May 24 ii   `- Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?1Sam
24 May 24 i`- Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?1Chris M. Thomasson
23 May 24 +* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?17Sam
24 May 24 i+* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?15olcott
24 May 24 ii`* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?14Sam
24 May 24 ii +* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?8olcott
24 May 24 ii i+- Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?1Chris M. Thomasson
24 May 24 ii i`* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?6Sam
24 May 24 ii i +* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?2Kenny McCormack
24 May 24 ii i i`- Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?1olcott
24 May 24 ii i `* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?3Keith Thompson
24 May 24 ii i  `* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?2olcott
25 May 24 ii i   `- Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?1Chris M. Thomasson
24 May 24 ii +- Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?1olcott
24 May 24 ii +* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?2Keith Thompson
24 May 24 ii i`- Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?1olcott
24 May 24 ii `* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?2olcott
24 May 24 ii  `- Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?1Sam
24 May 24 i`- Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?1Chris M. Thomasson
24 May 24 +* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?6Richard Harnden
24 May 24 i`* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?5olcott
24 May 24 i +* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?2David Brown
24 May 24 i i`- Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?1olcott
24 May 24 i +- Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?1Fred. Zwarts
24 May 24 i `- Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?1Fred. Zwarts
24 May 24 +* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?4Fred. Zwarts
24 May 24 i`* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?3olcott
24 May 24 i `* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?2Fred. Zwarts
24 May 24 i  `- Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?1olcott
25 May 24 `* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?31Fred. Zwarts
25 May 24  +* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?2Tim Rentsch
25 May 24  i`- Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?1olcott
25 May 24  +* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?2olcott
26 May 24  i`- Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?1Fred. Zwarts
25 May 24  +* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?3Mike Terry
25 May 24  i+- D correctly simulated by pure function H cannot possibly reach its own line 061olcott
25 May 24  i`- D correctly simulated by pure function H cannot possibly reach its own line 06---TOC divergence1olcott
26 May 24  `* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?23olcott
26 May 24   `* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?22Fred. Zwarts
26 May 24    `* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?21olcott
26 May 24     `* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?20Fred. Zwarts
26 May 24      `* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?19olcott
27 May 24       `* Re: Can you see that D correctly simulated by H remains stuck in recursive simulation?18Fred. Zwarts
27 May 24        `* D correctly simulated by H never halts17olcott
28 May 24         `* Re: D correctly simulated by H never halts16Fred. Zwarts
28 May 24          `* Re: D correctly simulated by H never halts15olcott
28 May 24           `* Re: D correctly simulated by H never halts14Chris M. Thomasson
29 May 24            `* Re: D correctly simulated by H never halts13olcott
29 May 24             `* Re: D correctly simulated by H never halts12tTh
29 May 24              `* Re: D correctly simulated by H never halts11olcott
29 May 24               `* Re: D correctly simulated by H never halts10Chris M. Thomasson
29 May 24                `* Re: D correctly simulated by H never halts9olcott
29 May 24                 +- Re: D correctly simulated by H never halts1olcott
29 May 24                 `* Re: D correctly simulated by H never halts7Chris M. Thomasson
29 May 24                  +- Re: D correctly simulated by H never halts1olcott
29 May 24                  `* Re: D correctly simulated by H never halts5olcott
29 May 24                   +* Re: D correctly simulated by H never halts2Chris M. Thomasson
29 May 24                   i`- Re: D correctly simulated by H never halts1olcott
29 May 24                   `* Re: D correctly simulated by H never halts2Chris M. Thomasson
29 May 24                    `- Re: D correctly simulated by H never halts1Chris M. Thomasson

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