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Path: ...!feeds.phibee-telecom.net!2.eu.feeder.erje.net!feeder.erje.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Mikko <mikko.levanto@iki.fi> Newsgroups: comp.theory Subject: Re: This function proves that only the outermost HHH examines the execution trace Date: Fri, 2 Aug 2024 09:34:25 +0300 Organization: - Lines: 60 Message-ID: <v8hulh$2mj18$1@dont-email.me> References: <v80h07$2su8m$3@dont-email.me> <0amdndFJSZSzYD77nZ2dnZfqnPednZ2d@brightview.co.uk> <v8102f$2vo8u$1@dont-email.me> <v83fhe$3gihn$1@dont-email.me> <v83hmk$3gvj7$1@dont-email.me> <v83jc9$3gihm$1@dont-email.me> <v83juc$3ham9$1@dont-email.me> <v8519e$3s7bv$1@dont-email.me> <v88h9e$i7kl$7@dont-email.me> <v8a31r$u7n5$1@dont-email.me> <v8btl5$184u7$3@dont-email.me> <v8cval$1hf7s$1@dont-email.me> <v8dshi$1mg72$4@dont-email.me> <v8fes7$22of5$1@dont-email.me> <v8fti6$24rl1$8@dont-email.me> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Fri, 02 Aug 2024 08:34:25 +0200 (CEST) Injection-Info: dont-email.me; posting-host="091c507d5ae6612e3eb2a7bc86b072a3"; logging-data="2837544"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/01BOckYI+aa+1F0v7yW7R" User-Agent: Unison/2.2 Cancel-Lock: sha1:51rhxq36WDyq4L+7vFgXmHJjpxo= Bytes: 3761 On 2024-08-01 12:03:17 +0000, olcott said: > On 8/1/2024 2:52 AM, Mikko wrote: >> On 2024-07-31 17:33:38 +0000, olcott said: >> >>> On 7/31/2024 4:15 AM, Mikko wrote: >>>> On 2024-07-30 23:40:21 +0000, olcott said: >>>> >>>>> On 7/30/2024 2:00 AM, Mikko wrote: >>>>>> On 2024-07-29 16:50:53 +0000, olcott said: >>>>>> >>>>>>> On 7/28/2024 3:59 AM, Mikko wrote: >>>>>>>> On 2024-07-27 20:05:31 +0000, olcott said: >>>>>>>>> If you had sufficient understanding of the x86 language >>>>>>>>> you would know that DDD is correctly emulated by HHH. >>>>>>>> >>>>>>>> If you had suffient understanding of x86 language and correctness >>>>>>>> you would know that DDD is incorrectly emnulated by HHH. >>>>>>> >>>>>>> This is only seems that way because every reviewer makes sure >>>>>>> to ignore one aspect of the basis of another. >>>>>> >>>>>> It is perfectly OK to ignore irrelevant details. A relevant detail >>>>>> is the meaning of the word "emulate" as that determines what is a >>>>>> correct emulation and what is not. >>>>> >>>>> *It is not OK to ignore* >>>>> >>>>> This algorithm is used by all the simulating termination analyzers: >>>>> <MIT Professor Sipser agreed to ONLY these verbatim words 10/13/2022> >>>>> If simulating halt decider *H correctly simulates its input D* >>>>> *until H correctly determines that its simulated D would never* >>>>> *stop running unless aborted* then >>>>> >>>>> H can abort its simulation of D and correctly report that D >>>>> specifies a non-halting sequence of configurations. >>>>> </MIT Professor Sipser agreed to ONLY these verbatim words 10/13/2022> >>>>> >>>>> for DDD correctly emulated by HHH until... >>>> >>>> It is as Sipser does not say whether DDD is correctly simulated by HHH >>>> or what would constitute a correct simulation. >>>> >>> >>> This has already been fully established elsewhere. >> >> You have never shown any proof about either "correctly". >> > > When instructions are executed/emulated according to the > semantics of the x86 language then they are executed/emulated > correctly. When the execution is discontinued at a point where x86 semantics require continuation the first unexecuted instruction is not executed correctly. -- Mikko