| By: |
THENL [Analyze THENL [Auto THEN Analyze;Id];Auto;Auto] |
| 1 |
2. in : {i:Id| R(i) } 3. out : {i:Id| R(i) } 4. 4. R(source(in(i))) & R(destination(out(i))) 4. & source(out(i)) = i 4. & & destination(in(i)) = i 4. & & in(destination(out(i))) = out(i) 4. & & out(source(in(i))) = in(i) | 1 step |
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