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This removes the field "tester name" from the Expr-level and Term-level APIs. This field is an artifact of parsing and thus should be handled in the parsers.
This refactor uncovered an issue in our regressions, namely our smt version >= 2.6 was not strictly complaint, since the symbol is-cons was being automatically defined for testers of constructors cons. This disables this behavior when strict mode is enabled. It updates the regressions with this issue.
This is work towards parser migration.
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Currently, we can optionally specify an *.expect file with the metadata
of a regression test. This commit removes that option because it was not
widely used, adds maintenance overhead and makes the transition to a new
build system more cumbersome. Regression files can still be fed to a
solver without removing the metadata first since they are in comments of
the corresponding input format (note that this was not always the case,
it changed in efc6163629c6c5de446eccfe81777c93829995d5).
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Until now, regression tests were split across tens of different
Makefile.am, which required a lot of code duplication and does not
really seem to be in the spirit of automake. If we want to change the
LOG_COMPILER/LOG_DRIVER for example, we have to change every single
Makefile.am, which is cumbersome (I was able to get something
semi-working by exporting those variables but it didn't seem very
clean). Additionally, it made the output of the regression tests fairly
verbose and split the output across multiple log files. Finally
it also limited parallelism when running the regression tests (this fix lowers
the time it takes to run regression level 1 from 3m to 1m45s on my
machine with 16 threads).
This commit moves all the regression tests into
test/regress/Makefile.tests and changes test/regress/Makefile.am to deal
with this new structure. Finally, it changes how the test summary in
test/Makefile.am is produced: instead of relying on the log files for
the subdirectories, it greps for the test results in the log files of
the individual tests. Not the most elegant solution but we should
probably anyway delegate that task to a Python script at some point.
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