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