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 
 -12 8 -1 0
1 4 9 0
2 -6 19 0
3 -6 -1 0
1 -17 -18 0
8 -4 -6 0
-3 -16 -15 0
-15 19 -3 0
-19 4 5 0
11 -10 -1 0
-7 -17 13 0
18 7 -19 0
-3 4 -20 0
-15 -8 3 0
-5 6 -7 0
-20 11 16 0
-16 -2 -14 0
-11 14 1 0
-9 -4 12 0
18 -2 -14 0
-4 13 -8 0
7 -20 14 0
-18 -6 17 0
-4 9 16 0
-13 -7 -17 0
-1 -13 20 0
-17 6 7 0
-17 -6 3 0
15 19 2 0
1 -10 -18 0
-3 15 18 0
17 12 -11 0
-4 -6 18 0
-10 -16 5 0
-20 -9 10 0
-15 -1 18 0
17 -16 7 0
7 -2 19 0
10 -13 -7 0
7 -1 6 0
18 -19 -8 0
-6 -15 7 0
14 4 -13 0
15 -2 3 0
7 -3 -13 0
4 -20 1 0
-18 -19 -15 0
-4 -5 -19 0
1 -5 -17 0
-3 -16 -12 0
-14 -2 -1 0
-19 -14 18 0
-14 -16 6 0
12 14 10 0
-7 -6 -17 0
8 -14 -18 0
7 12 11 0
4 16 -18 0
14 19 4 0
-3 12 -13 0
-14 17 -5 0
-8 -11 -10 0
-20 18 -6 0
-8 20 -12 0
18 5 -9 0
2 17 -15 0
-4 -17 10 0
4 -14 1 0
-3 19 8 0
12 -7 -14 0
-18 17 14 0
-11 -7 -19 0
3 -4 -7 0
12 16 20 0
1 12 -3 0
-19 4 -13 0
-2 14 1 0
17 12 -8 0
5 19 -15 0
1 10 -17 0
-11 -2 6 0
11 -10 -9 0
-1 -7 -20 0
16 20 18 0
5 -9 15 0
17 7 5 0
-10 -15 11 0
10 20 12 0
9 -5 -7 0
12 19 -4 0
-8 -17 -7 0
%
0