fstsplit
0
x
nil
fstsplit
s
n
nil
nil
fstsplit
s
n
cons
h
t
cons
h
fstsplit
n
t
sndsplit
0
x
x
sndsplit
s
n
nil
nil
sndsplit
s
n
cons
h
t
sndsplit
n
t
empty
nil
true
empty
cons
h
t
false
leq
0
m
true
leq
s
n
0
false
leq
s
n
s
m
leq
n
m
length
nil
0
length
cons
h
t
s
length
t
app
nil
x
x
app
cons
h
t
x
cons
h
app
t
x
map_f
pid
nil
nil
map_f
pid
cons
h
t
app
f
pid
h
map_f
pid
t
head
cons
h
t
h
tail
cons
h
t
t
ring
st_1
in_2
st_2
in_3
st_3
m
if_1
st_1
in_2
st_2
in_3
st_3
m
empty
fstsplit
m
st_1
if_1
st_1
in_2
st_2
in_3
st_3
m
false
ring
sndsplit
m
st_1
cons
fstsplit
m
st_1
in_2
st_2
in_3
st_3
m
ring
st_1
in_2
st_2
in_3
st_3
m
if_2
st_1
in_2
st_2
in_3
st_3
m
leq
m
length
st_2
if_2
st_1
in_2
st_2
in_3
st_3
m
true
if_3
st_1
in_2
st_2
in_3
st_3
m
empty
fstsplit
m
st_2
if_3
st_1
in_2
st_2
in_3
st_3
m
false
ring
st_1
in_2
sndsplit
m
st_2
cons
fstsplit
m
st_2
in_3
st_3
m
if_2
st_1
in_2
st_2
in_3
st_3
m
false
if_4
st_1
in_2
st_2
in_3
st_3
m
empty
fstsplit
m
app
map_f
two
head
in_2
st_2
if_4
st_1
in_2
st_2
in_3
st_3
m
false
ring
st_1
tail
in_2
sndsplit
m
app
map_f
two
head
in_2
st_2
cons
fstsplit
m
app
map_f
two
head
in_2
st_2
in_3
st_3
m
ring
st_1
in_2
st_2
in_3
st_3
m
if_5
st_1
in_2
st_2
in_3
st_3
m
empty
map_f
two
head
in_2
if_5
st_1
in_2
st_2
in_3
st_3
m
true
ring
st_1
tail
in_2
st_2
in_3
st_3
m
ring
st_1
in_2
st_2
in_3
st_3
m
if_6
st_1
in_2
st_2
in_3
st_3
m
leq
m
length
st_3
if_6
st_1
in_2
st_2
in_3
st_3
m
true
if_7
st_1
in_2
st_2
in_3
st_3
m
empty
fstsplit
m
st_3
if_7
st_1
in_2
st_2
in_3
st_3
m
false
ring
st_1
in_2
st_2
in_3
sndsplit
m
st_3
m
if_6
st_1
in_2
st_2
in_3
st_3
m
false
if_8
st_1
in_2
st_2
in_3
st_3
m
empty
fstsplit
m
app
map_f
three
head
in_3
st_3
if_8
st_1
in_2
st_2
in_3
st_3
m
false
ring
st_1
in_2
st_2
tail
in_3
sndsplit
m
app
map_f
three
head
in_3
st_3
m
ring
st_1
in_2
st_2
in_3
st_3
m
if_9
st_1
in_2
st_2
in_3
st_3
m
empty
map_f
three
head
in_3
if_9
st_1
in_2
st_2
in_3
st_3
m
true
ring
st_1
in_2
st_2
tail
in_3
st_3
m
2.2
ring
st_1
in_2
st_2
in_3
st_3
m
leq
m
length
st_3
ring
st_1
in_2
st_2
in_3
st_3
m
head
in_3
if_8
st_1
in_2
st_2
in_3
st_3
m
false
ring
st_1
in_2
st_2
tail
in_3
sndsplit
m
app
map_f
three
head
in_3
st_3
m
if_5
st_1
in_2
st_2
in_3
st_3
m
true
ring
st_1
tail
in_2
st_2
in_3
st_3
m
if_1
st_1
in_2
st_2
in_3
st_3
m
false
ring
sndsplit
m
st_1
cons
fstsplit
m
st_1
in_2
st_2
in_3
st_3
m
ring
st_1
in_2
st_2
in_3
st_3
m
map_f
two
head
in_2
ring
st_1
in_2
st_2
in_3
st_3
m
map_f
three
head
in_3
ring
st_1
in_2
st_2
in_3
st_3
m
empty
map_f
three
head
in_3
ring
st_1
in_2
st_2
in_3
st_3
m
if_2
st_1
in_2
st_2
in_3
st_3
m
leq
m
length
st_2
ring
st_1
in_2
st_2
in_3
st_3
m
head
in_2
if_6
st_1
in_2
st_2
in_3
st_3
m
false
app
map_f
three
head
in_3
st_3
map_f
pid
cons
h
t
app
f
pid
h
map_f
pid
t
if_4
st_1
in_2
st_2
in_3
st_3
m
false
sndsplit
m
app
map_f
two
head
in_2
st_2
if_4
st_1
in_2
st_2
in_3
st_3
m
false
head
in_2
ring
st_1
in_2
st_2
in_3
st_3
m
leq
m
length
st_2
sndsplit
s
n
cons
h
t
sndsplit
n
t
if_4
st_1
in_2
st_2
in_3
st_3
m
false
app
map_f
two
head
in_2
st_2
if_6
st_1
in_2
st_2
in_3
st_3
m
false
head
in_3
if_1
st_1
in_2
st_2
in_3
st_3
m
false
sndsplit
m
st_1
ring
st_1
in_2
st_2
in_3
st_3
m
if_9
st_1
in_2
st_2
in_3
st_3
m
empty
map_f
three
head
in_3
if_6
st_1
in_2
st_2
in_3
st_3
m
false
empty
fstsplit
m
app
map_f
three
head
in_3
st_3
if_2
st_1
in_2
st_2
in_3
st_3
m
true
empty
fstsplit
m
st_2
if_3
st_1
in_2
st_2
in_3
st_3
m
false
ring
st_1
in_2
sndsplit
m
st_2
cons
fstsplit
m
st_2
in_3
st_3
m
if_3
st_1
in_2
st_2
in_3
st_3
m
false
fstsplit
m
st_2
if_4
st_1
in_2
st_2
in_3
st_3
m
false
tail
in_2
if_2
st_1
in_2
st_2
in_3
st_3
m
false
map_f
two
head
in_2
app
cons
h
t
x
app
t
x
if_2
st_1
in_2
st_2
in_3
st_3
m
false
app
map_f
two
head
in_2
st_2
ring
st_1
in_2
st_2
in_3
st_3
m
empty
map_f
two
head
in_2
fstsplit
s
n
cons
h
t
fstsplit
n
t
if_2
st_1
in_2
st_2
in_3
st_3
m
true
if_3
st_1
in_2
st_2
in_3
st_3
m
empty
fstsplit
m
st_2
if_8
st_1
in_2
st_2
in_3
st_3
m
false
sndsplit
m
app
map_f
three
head
in_3
st_3
if_4
st_1
in_2
st_2
in_3
st_3
m
false
ring
st_1
tail
in_2
sndsplit
m
app
map_f
two
head
in_2
st_2
cons
fstsplit
m
app
map_f
two
head
in_2
st_2
in_3
st_3
m
if_2
st_1
in_2
st_2
in_3
st_3
m
true
fstsplit
m
st_2
if_4
st_1
in_2
st_2
in_3
st_3
m
false
fstsplit
m
app
map_f
two
head
in_2
st_2
if_8
st_1
in_2
st_2
in_3
st_3
m
false
tail
in_3
if_6
st_1
in_2
st_2
in_3
st_3
m
false
fstsplit
m
app
map_f
three
head
in_3
st_3
map_f
pid
cons
h
t
map_f
pid
t
if_2
st_1
in_2
st_2
in_3
st_3
m
false
head
in_2
if_2
st_1
in_2
st_2
in_3
st_3
m
false
if_4
st_1
in_2
st_2
in_3
st_3
m
empty
fstsplit
m
app
map_f
two
head
in_2
st_2
length
cons
h
t
length
t
ring
st_1
in_2
st_2
in_3
st_3
m
length
st_2
if_3
st_1
in_2
st_2
in_3
st_3
m
false
sndsplit
m
st_2
if_4
st_1
in_2
st_2
in_3
st_3
m
false
map_f
two
head
in_2
if_8
st_1
in_2
st_2
in_3
st_3
m
false
map_f
three
head
in_3
if_9
st_1
in_2
st_2
in_3
st_3
m
true
tail
in_3
ring
st_1
in_2
st_2
in_3
st_3
m
if_5
st_1
in_2
st_2
in_3
st_3
m
empty
map_f
two
head
in_2
if_4
st_1
in_2
st_2
in_3
st_3
m
false
head
in_2
ring
st_1
in_2
st_2
in_3
st_3
m
fstsplit
m
st_1
if_2
st_1
in_2
st_2
in_3
st_3
m
false
fstsplit
m
app
map_f
two
head
in_2
st_2
if_8
st_1
in_2
st_2
in_3
st_3
m
false
head
in_3
ring
st_1
in_2
st_2
in_3
st_3
m
empty
fstsplit
m
st_1
if_4
st_1
in_2
st_2
in_3
st_3
m
false
map_f
two
head
in_2
if_6
st_1
in_2
st_2
in_3
st_3
m
true
if_7
st_1
in_2
st_2
in_3
st_3
m
empty
fstsplit
m
st_3
if_8
st_1
in_2
st_2
in_3
st_3
m
false
app
map_f
three
head
in_3
st_3
if_6
st_1
in_2
st_2
in_3
st_3
m
true
fstsplit
m
st_3
if_4
st_1
in_2
st_2
in_3
st_3
m
false
app
map_f
two
head
in_2
st_2
ring
st_1
in_2
st_2
in_3
st_3
m
if_1
st_1
in_2
st_2
in_3
st_3
m
empty
fstsplit
m
st_1
if_1
st_1
in_2
st_2
in_3
st_3
m
false
fstsplit
m
st_1
if_5
st_1
in_2
st_2
in_3
st_3
m
true
tail
in_2
if_2
st_1
in_2
st_2
in_3
st_3
m
false
empty
fstsplit
m
app
map_f
two
head
in_2
st_2
if_7
st_1
in_2
st_2
in_3
st_3
m
false
sndsplit
m
st_3
ring
st_1
in_2
st_2
in_3
st_3
m
length
st_3
ring
st_1
in_2
st_2
in_3
st_3
m
if_6
st_1
in_2
st_2
in_3
st_3
m
leq
m
length
st_3
if_6
st_1
in_2
st_2
in_3
st_3
m
false
map_f
three
head
in_3
leq
s
n
s
m
leq
n
m
if_7
st_1
in_2
st_2
in_3
st_3
m
false
ring
st_1
in_2
st_2
in_3
sndsplit
m
st_3
m
if_9
st_1
in_2
st_2
in_3
st_3
m
true
ring
st_1
in_2
st_2
tail
in_3
st_3
m
if_6
st_1
in_2
st_2
in_3
st_3
m
false
if_8
st_1
in_2
st_2
in_3
st_3
m
empty
fstsplit
m
app
map_f
three
head
in_3
st_3
if_6
st_1
in_2
st_2
in_3
st_3
m
true
empty
fstsplit
m
st_3
true
if_6
st_1
in_2
st_2
in_3
st_3
m
false
if_8
st_1
in_2
st_2
in_3
st_3
m
empty
fstsplit
m
app
map_f
three
head
in_3
st_3
if_9
st_1
in_2
st_2
in_3
st_3
m
true
ring
st_1
in_2
st_2
tail
in_3
st_3
m
if_7
st_1
in_2
st_2
in_3
st_3
m
false
ring
st_1
in_2
st_2
in_3
sndsplit
m
st_3
m
if_4
st_1
in_2
st_2
in_3
st_3
m
false
ring
st_1
tail
in_2
sndsplit
m
app
map_f
two
head
in_2
st_2
cons
fstsplit
m
app
map_f
two
head
in_2
st_2
in_3
st_3
m
if_2
st_1
in_2
st_2
in_3
st_3
m
true
if_3
st_1
in_2
st_2
in_3
st_3
m
empty
fstsplit
m
st_2
ring
st_1
in_2
st_2
in_3
st_3
m
if_6
st_1
in_2
st_2
in_3
st_3
m
leq
m
length
st_3
ring
st_1
in_2
st_2
in_3
st_3
m
if_1
st_1
in_2
st_2
in_3
st_3
m
empty
fstsplit
m
st_1
if_3
st_1
in_2
st_2
in_3
st_3
m
false
ring
st_1
in_2
sndsplit
m
st_2
cons
fstsplit
m
st_2
in_3
st_3
m
if_6
st_1
in_2
st_2
in_3
st_3
m
true
if_7
st_1
in_2
st_2
in_3
st_3
m
empty
fstsplit
m
st_3
ring
st_1
in_2
st_2
in_3
st_3
m
if_9
st_1
in_2
st_2
in_3
st_3
m
empty
map_f
three
head
in_3
ring
st_1
in_2
st_2
in_3
st_3
m
if_5
st_1
in_2
st_2
in_3
st_3
m
empty
map_f
two
head
in_2
ring
st_1
in_2
st_2
in_3
st_3
m
if_2
st_1
in_2
st_2
in_3
st_3
m
leq
m
length
st_2
if_1
st_1
in_2
st_2
in_3
st_3
m
false
ring
sndsplit
m
st_1
cons
fstsplit
m
st_1
in_2
st_2
in_3
st_3
m
if_5
st_1
in_2
st_2
in_3
st_3
m
true
ring
st_1
tail
in_2
st_2
in_3
st_3
m
if_8
st_1
in_2
st_2
in_3
st_3
m
false
ring
st_1
in_2
st_2
tail
in_3
sndsplit
m
app
map_f
three
head
in_3
st_3
m
if_2
st_1
in_2
st_2
in_3
st_3
m
false
if_4
st_1
in_2
st_2
in_3
st_3
m
empty
fstsplit
m
app
map_f
two
head
in_2
st_2
true
Failed!
NaTT
certifiable-1.6