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