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