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