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