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sav07_homework_4_solution [2007/06/16 21:35] vkuncak |
sav07_homework_4_solution [2007/06/16 21:40] vkuncak |
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| This is a sketch of the solution of [[SAV07 Homework 4]] | This is a sketch of the solution of [[SAV07 Homework 4]] | ||
| + | |||
| ==== Part 1 ==== | ==== Part 1 ==== | ||
| \begin{eqnarray*} | \begin{eqnarray*} | ||
| - | R(\mbox{havoc x}) &=& \{((x,ok),(x',ok) \mid x,x' \in D \} \\ | + | R(\mbox{havoc x}) &=& \{((x,ok),(x',ok') \mid ok \rightarrow ok' \} \\ |
| R(\mbox{assert}\ F}) &=& \{((x,ok),(x',ok') \mid (ok \land F(x)) \rightarrow (x=x' \land ok') \} \\ | R(\mbox{assert}\ F}) &=& \{((x,ok),(x',ok') \mid (ok \land F(x)) \rightarrow (x=x' \land ok') \} \\ | ||
| R(\mbox{assume}\ F}) &=& \{((x,ok),(x',ok) \mid ok\ \rightarrow\ (F(x) \land x=x' \land ok') \} | R(\mbox{assume}\ F}) &=& \{((x,ok),(x',ok) \mid ok\ \rightarrow\ (F(x) \land x=x' \land ok') \} | ||