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