EXTRACREDIT Jeremy J. Carroll This is the classic 3 SAT problem.
c genAlea with seed 67700557
p cnf 9 45
1 2 -4 0
-3 6 -4 0
9 -4 5 0
4 -6 -2 0
-2 -3 1 0
-3 8 7 0
-8 -2 3 0
-7 -6 9 0
1 -4 -6 0
-8 -5 -3 0
4 3 6 0
2 -1 4 0
-3 8 2 0
6 -2 9 0
7 -9 -2 0
2 -5 -7 0
5 2 9 0
6 -2 -7 0
-9 3 -2 0
1 7 4 0
-4 1 9 0
2 1 -6 0
7 -4 9 0
-5 3 -9 0
-4 9 -8 0
4 3 9 0
-7 9 5 0
4 1 3 0
-5 8 7 0
8 -7 3 0
4 -8 6 0
4 6 -5 0
-6 1 -9 0
1 9 -6 0
9 -8 3 0
6 3 -4 0
8 -4 6 0
-3 5 -8 0
-9 4 3 0
8 -4 2 0
-5 -2 -9 0
-7 -3 -4 0
-9 -4 -8 0
6 -4 -1 0
6 -7 -8 0