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From: Mikko <mikko.levanto@iki.fi>
Newsgroups: comp.theory
Subject: Re: Liar detector: Fred, Richard, Joes and Alan --- Ben's agreement
Date: Thu, 18 Jul 2024 10:40:00 +0300
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On 2024-07-17 13:00:55 +0000, olcott said:

> On 7/17/2024 1:43 AM, Mikko wrote:
>> On 2024-07-16 14:21:28 +0000, olcott said:
>>> 
>>> When simulated input DDD stops running {if and only if}
>>> the simulation of this input DDD has been aborted this
>>> necessitates that input DDD specifies non-halting behavior
>> 
>> DDD does not stop runnig unless it is completely exeuted.
> 
> _DDD()
> [00002163] 55         push ebp      ; housekeeping
> [00002164] 8bec       mov ebp,esp   ; housekeeping
> [00002166] 6863210000 push 00002163 ; push DDD
> [0000216b] e853f4ffff call 000015c3 ; call HHH(DDD)
> [00002170] 83c404     add esp,+04
> [00002173] 5d         pop ebp
> [00002174] c3         ret
> Size in bytes:(0018) [00002174]
> 
> DDD emulated by HHH according to the semantic meaning of
> its x86 instructions never stop running unless aborted.

You mean HHH's simulation of DDD may not termite before HHH aborts it?
The behaviour specified by DDD, both by C semantics and by x86 semantics,
is halting if HHH returns. Otherwise HHH is not a decider.

-- 
Mikko