Z3

Timeout for Z3 Optimize

由 守給你的承諾、 提交于 2021-01-27 11:59:44
问题 How do you set a timeout for the z3 optimizer such that it will give you the best known solution when it runs out of time? from z3 import * s = Optimize() # Hard Problem print(s.check()) print(s.model()) Follow-up question, can you set z3 to randomized hill climbing or does it always perform a complete search? 回答1: Long answer short, you can't . That's simply not how the optimizer works. That is, it doesn't find a solution and then try to improve it. If you interrupt it or set a time-out,

Timeout for Z3 Optimize

由 不问归期 提交于 2021-01-27 11:54:43
问题 How do you set a timeout for the z3 optimizer such that it will give you the best known solution when it runs out of time? from z3 import * s = Optimize() # Hard Problem print(s.check()) print(s.model()) Follow-up question, can you set z3 to randomized hill climbing or does it always perform a complete search? 回答1: Long answer short, you can't . That's simply not how the optimizer works. That is, it doesn't find a solution and then try to improve it. If you interrupt it or set a time-out,

MSU 2019世界编码器大赛

由 时光毁灭记忆、已成空白 提交于 2021-01-16 08:41:36
MSU 2019世界编码器大赛的全高清客观质量测试报告于10月21出来了，报告分为免费版本和收费版本($950)。收费版本包含了所有测试结果，免费版本只包含了部分结果。两者区别如下： 此次参与测试的12款编码器如下： 测试序列 此次使用的测试序列较以往有较大改变，最终的测试集由100条序列组成，平均码率为218.9Mbps，中值为143.2Mbps。 测试配置 本次测试提供了3种配置： fast encoding 60fps universal encoding 25fps ripping encoding 1fps，同时要求其SSIM结果要优于x264 "very slow"模式的结果。 硬件配置 CPU: Intel Socket 1151 Core i7 8700K(Coffee Lake)(3.7GHz,6C12T,TDP 95W) 主板：ASRock Z370M Pro4 内存：Cruical CT16G4DFD824A 16GB DIMM DDR4 2400MHz CL15 操作系统：Windows10 x64 评价指标 此次采用的客观评价指标是YUV-SSIM，它是Y-SSIM,U-SSIM,V-SSIM的加权值。 SSIM的计算方法可以参考之前的文章 图像质量评价（一） 结果 对于YUV-SSIM指标，编码器在全部3种配置下结果如图： 第1名： HW265 第2名：

Using a text file to input the Z3 model

由 若如初见. 提交于 2021-01-07 04:25:46
问题 I am using Z3 through its .Net Api. I build models which have considerably huge number of constraints. Until now I have been using the respective Z3 commands (in the .Net Api) to build my model line by line. But now that the model has increased in size the time it takes to create the model is very considerable. I was thinking is there a way to build the model as a text file and input the completed model to a Z3 solver in one go? 回答1: Your question is rather cryptic, but all SMT-solvers

Flutter web开发之跳转到外部网站

由 ☆樱花仙子☆ 提交于 2021-01-05 18:05:07
在Flutter Web开发中,有时候需要跳转到网站, 可以通过url_launcher这个第三方库实现. 代码示例 首先引入依赖 url_launcher: ^5.4.2 业务代码: import 'package:url_launcher/url_launcher.dart'; //定义方法 _launchURL(url) async { if (await canLaunch(url)) { await launch(url); } else { throw 'Could not launch $url'; } } //跳转 _launchURL("https://www.testerhome.com"); Flutter 写的app, 需要源码可以私信~~ 简繁火星字体转换 哄女友神器 号码测吉凶 电视节目直播表 最好的笔记软件 https://www.wolai.com/signup?invitation=6Z8Z3BP 来源： oschina 链接： https://my.oschina.net/u/4197015/blog/4878971

Flutter web开发之跳转到外部网站

由 只谈情不闲聊 提交于 2021-01-05 16:48:33
在Flutter Web开发中,有时候需要跳转到网站, 可以通过url_launcher这个第三方库实现. 代码示例 首先引入依赖 url_launcher: ^5.4.2 业务代码: import 'package:url_launcher/url_launcher.dart'; //定义方法 _launchURL(url) async { if (await canLaunch(url)) { await launch(url); } else { throw 'Could not launch $url'; } } //跳转 _launchURL("https://www.testerhome.com"); Flutter 写的app, 需要源码可以私信~~ 简繁火星字体转换 哄女友神器 号码测吉凶 电视节目直播表 最好的笔记软件 来源： oschina 链接： https://my.oschina.net/u/4197015/blog/4879019

Z3python XOR sum?

由 放肆的年华 提交于 2021-01-05 09:45:48
问题 I'm currently trying to solve some equation with z3python, and I am coming across a situation I could not deal with. I need to xor certain BitVecs with specific non ascii char values, and sum them up to check a checksum. Here is an example : pbInput = [BitVec("{}".format(i), 8) for i in range(KEY_LEN)] password = "\xff\xff\xde\x8e\xae" solver.add(Xor(pbInput[0], password[0]) + Xor(pbInput[3], password[3]) == 300) It results in a z3 type exception : z3.z3types.Z3Exception: Value cannot be

How do I solve make: None: Command not found issue?

由 走远了吗. 提交于 2021-01-05 08:58:46
问题 I am having trouble understanding this error. make: None: Command not found make: *** [Makefile:3879: api/api_commands.o] Error 127 I have tried looking but I can't find an answer to the specific issue make: None: . The full issue and error message is here for clarification. Help on this would be highly appreciated. Update The make file consists of the following (line 3879 separated from the rest for clarification): ... includes_65 = -I../src/tactic/portfolio -I../src/tactic/smtlogics -I..

How do I solve make: None: Command not found issue?

由 故事扮演 提交于 2021-01-05 08:58:28
问题 I am having trouble understanding this error. make: None: Command not found make: *** [Makefile:3879: api/api_commands.o] Error 127 I have tried looking but I can't find an answer to the specific issue make: None: . The full issue and error message is here for clarification. Help on this would be highly appreciated. Update The make file consists of the following (line 3879 separated from the rest for clarification): ... includes_65 = -I../src/tactic/portfolio -I../src/tactic/smtlogics -I..

Windows加固平板电脑

由 僤鯓⒐⒋嵵緔 提交于 2020-12-29 22:15:32
8寸Windows三防平板电脑 我们公司足足有5款，为了方便您选择到合适的机型，所以我专门列了个表格整理出它们的区别，方便客户选到最合适自身的机型。 I81F I81H I86F I86H I88H 产品形态 8寸Windows三防平板电脑 产品定位 高性价比 高性价比 标准款 标准款 轻薄款 CPU Z3735F，四核，1.33Ghz-1.83Ghz Z8350，四核，1.45Ghz-1.92Ghz Z3735F，四核，1.33Ghz-1.83Ghz Z8350，四核，1.45Ghz-1.92Ghz 系统 安卓5.1/Win10 Win10 安卓5.1/Win10 Win10 RAM 2G 4G 2G 4G 2/4G ROM 32G 64/128G 32G 64/128G 32/64/128G 外观尺寸 227.5*150*22mm 228*145*19mm 220*143*15mm 重量 680g 690g 630g 亮度 450nit 700nit（高亮屏） 450nit 分辨率 800*1280，IPS屏 触摸屏 5 点电容屏，G+G，硬度7H以上,防刮花，TP厚度：1.1mm，COF 电池 6000mAh 8500mAh（播放视频状态下能续航8小时） 7800mAh 摄像头 前置2.0MP，后置5.0MP 网络连接 GPS（支持北斗），蓝牙4.2，双频WiFi，4G通信
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