I am not sure that { true } x := y { x = y } is a valid Hoare triple. I am not sure one is allowed to reference a variable (in this case, y), without ex开发者_StackOverflow中文版plicitly defining
M26****3898 2022-03-20 09:47 开发者_运维问答泰山地下大裂谷门票是128元 。
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