c This Formular is generated by mcnf
c
c    horn? no 
c    forced? no 
c    mixed sat? no 
c    clause length = 3 
c
p cnf 20  91 
 -19 -13 15 0
15 -18 -6 0
20 3 -17 0
-15 2 -17 0
-10 1 15 0
14 -2 20 0
-3 -15 13 0
-12 -17 5 0
11 -20 18 0
11 -1 19 0
11 -9 -17 0
-1 -10 11 0
12 3 17 0
9 -2 -8 0
-9 -3 -4 0
-6 4 9 0
13 11 -17 0
19 -11 15 0
17 16 9 0
-13 -15 10 0
-9 16 7 0
-4 20 19 0
-18 -5 -13 0
-9 -7 2 0
6 -7 18 0
10 14 -8 0
9 1 15 0
-7 12 -19 0
-13 14 17 0
-3 -12 -17 0
1 3 8 0
-4 18 -9 0
-19 -14 -7 0
8 -5 4 0
14 1 -2 0
-4 1 18 0
20 12 -5 0
4 8 -5 0
20 -13 -1 0
-13 11 20 0
8 -5 2 0
-12 16 1 0
-8 -7 18 0
8 -16 -15 0
9 10 3 0
9 -11 7 0
-19 9 18 0
10 12 9 0
9 12 -20 0
-15 -9 -8 0
19 -6 -2 0
8 -15 -7 0
-7 4 3 0
20 -18 -19 0
-15 6 -4 0
-10 9 -16 0
3 -18 -20 0
15 -14 9 0
2 -17 7 0
17 20 7 0
-17 -11 16 0
15 11 -9 0
17 -16 -12 0
-14 1 7 0
3 19 1 0
10 -3 13 0
14 -9 -18 0
-20 -7 -15 0
2 5 -15 0
10 -7 15 0
12 -6 -3 0
12 4 -6 0
8 -5 -2 0
-17 19 18 0
8 17 9 0
3 18 -10 0
2 14 4 0
3 -10 14 0
-18 -9 -8 0
17 7 -11 0
-9 -11 -15 0
18 19 -11 0
9 -8 -3 0
-11 10 4 0
14 1 -10 0
-1 -14 10 0
12 9 4 0
-16 17 -19 0
9 19 -17 0
1 4 10 0
-5 -1 17 0
%
0