p
a
x0
p
b
a
x1
x2
p
x1
p
a
b
a
x1
x2
a
b
a
x0
b
a
b
x0
2.2
p
a
x0
p
b
a
x1
x2
p
x1
p
a
b
a
x1
x2
p
a
x0
p
b
a
x1
x2
p
a
b
a
x1
x2
a
b
a
x0
a
b
x0
p
a
x0
p
b
a
x1
x2
a
b
a
x1
true
p
a
x0
p
b
a
x1
x2
p
a
b
a
x1
x2
p
a
x0
p
b
a
x1
x2
p
x1
p
a
b
a
x1
x2
true
a
1
1
1
b
1
1
2
p
2
2
0
p
2
2
23676
a
1
0
p
a
x0
p
b
a
x1
x2
p
x1
p
a
b
a
x1
x2
p
a
x0
p
b
a
x1
x2
p
x1
p
a
b
a
x1
x2
p
a
x0
p
b
a
x1
x2
p
x1
p
a
b
a
x1
x2
true
Failed!
NaTT
certifiable-1.6