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