Add part of nightly-bench in CI
- Allows to run part of nightly-bench in gitlab:
- adds the possibility in prover upgrade policy to remove a prover
- adds the possibility in regtests to only run on a subset.
REGTESTS_MODE = REDUCED
makes regtests reads in each directoryreduced_regtests.list
for the list of files to replay. - install CVC4 1.4 1.5 and Z3 in the docker files
- use alt-ergo 2.0.0 instead of alt-ergo 2.2.0
Edited by François Bobot