At: lshort mem 4 1 1 2
1. St: Type
2. l: St*
3. eq: St
St


4.
x,y:St. eq(x,y) 
x = y
5. s: St
6. u: St
7. v: St*
8. mem_f(St;s;LShort(v)) 
mem_f(St;s;v)
9.
eq(u,s)
10. u = s
mem_f(St;s;LShort(v))
u = s
mem_f(St;s;v)
By:
Analyze -1
THEN
ProveProp
Generated subgoals:None
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