These are CNF files tested with run.sh which actually needs to be called
from an immediate sub-directory of CaDiCaL (such as the directory .. one
level up). Log and proof files are saved in the build directory.
The .cnf files are in DIMACS format.
The corresponding .sol files are in SAT competition output format and
provide pre-computed solutions for testing and debugging.
The tool precochk.c is used to check witness generated and saved in the
.log files in the build directory to be correct.
The tool drat-trim.c is used to check proofs generated and saved in the
.prf files in the build directory to be correct.
We are also testing the simplifier flow of CaDiCaL using the scripts
../../scripts/run-simplifier-and-extend-solution.sh
../../scripts/extend-solution.sh
The makefile allows to execute the CNF tests from within this
sub-directory with a single make command, but always uses cadical
from ../../build/ and also puts the log and error files there.