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