| Age | Commit message (Collapse) | Author |
|---|
|
* src/theory/arith/normal_form.{h,cpp} contains the description for the new
normal form as well as utilities for dealing with the normal form.
* src/theory/arith/next_arith_rewriter.{h,cpp} contains the new rewriter.
The new rewriter implements preRewrite() and postRewrite() for arithmetic.
* src/theory/arith/arith_rewriter.{h,cpp} have been removed.
* TheoryArith::rewrite() has been removed.
* Arithmetic with the new normal form outperforms the trunk where the branch
occurred (-r797) on 46% of the examples in QF_LRA. (33% have no noticeable
difference.) Some important optimizations are stilling pending to the code
for handling the new normal form. (Bug 196.)
|
|
That is, "nb << a << b << c << OR << d << AND" turns into
(AND (OR a b c) d)
The rule is: pushing a kind onto a NodeBuilder with a nonzero
number of child Nodes in it, the action "collapses" it. If a
kind is already associated to the NodeBuilder, it is an error.
Thus:
NodeBuilder<> nb(AND); nb << AND;
and
NodeBuilder<> nb; nb << AND << OR;
are both errors (if assertions are on).
In reality, though, the implementation is trickier, as the collapsing
is done lazily on the following push. This complicates things a bit,
but by placing an Assert(false), I found that we aren't depending on
the old behavior (at least for any unit tests or regressions in the
source tree). The Assert(false) is now removed and leftist
NodeBuilders are in business.
Fixes bug 101.
|
|
|
|
* add Stats black-box unit test
* new make target: "make units" now runs unit tests only
* revised make target: "make regress" now runs regressions only
* configure.ac: pull in librt for clock_gettime()
|
|
|
|
|
|
Enabled new UF theory by default.
Added some UF regressions.
Some work on the whole equality-over-bool-removed-in-favor-of-IFF
thing. (Congruence closure module and other things have to handle
IFF as a special case of equality, etc..)
Added pre-rewriting to TheoryBool which rewrites:
* (IFF true x) => x
* (IFF false x) => (NOT x)
* (IFF x true) => x
* (IFF x false) => (NOT x)
* (IFF x x) => true
* (IFF x (NOT x)) => false
* (IFF (NOT x) x) => false
* (ITE true x y) => x
* (ITE false x y) => y
* (ITE cond x x) => x
Added post-rewriting that does all of the above, plus normalize IFF and ITE:
* (IFF x y) => (IFF y x), if y < x
* (ITE (NOT cond) x y) => (ITE cond y x)
(Note: ITEs survive the removal-of-ITEs pass only if they are Boolean-valued.)
A little more debugging output from CNF stream, context pushes/pops,
ITE removal.
Some more documentation.
Fixed some typos.
|
|
|
|
CongruenceClosure implementation; CongruenceClosure white-box test.
New UF theory implementation based on new CC module. This one
supports predicates. The two UF implementations exist in parallel
(they can be selected at runtime via the new command line option
"--uf").
Added type infrastructure for TUPLE.
Fixes to unit tests that failed in 16-August-2010 regressions.
Needed to instantiate TheoryEngine with an Options structure, and
explicitly call ->shutdown() on it before destruction (like the
SMTEngine does).
Fixed test makefiles to (1) perform all tests even in the presence of
failures, (2) give proper summaries of subdirectory tests
(e.g. regress0/uf and regress0/precedence)
Other minor changes.
|
|
be allocated in context memory. CDMap black-box test extended.
|
|
calling them directly. In tests this doesn't appear to
lead to slowdown.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
NOTE: mkNode/mkExpr/parsing functions can now throw type checking exceptions
|
|
|
|
|
|
bool); also make theoryOf(= t1 t2) return theoryOf(t1.getType()), rather than theoryOf(t1), as the latter gives different results for (= (geq x1 x2) (leq x2 x1)) and (= a (leq x2 x1)), which is strange and causes problems. should discuss at tuesday meeting. resolves bug 187.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
It is currently tracking all asserted equalities for simplicity.
Might want to check if this is a performance hit
|
|
allowed for a constant divided by a constant.
|
|
|
|
|
|
working. Still need to implement theory-specific shared term propagation.
|
|
|
|
but might flush out some memory issues. Passes all regressions so far..
|
|
|
|
|
|
|
|
|
|
|
|
AssertionException, and language enum should have stream insertion op
|
|
minor code
cleanup found while searching for additional cases. Closes bug 171.
|
|
resolves bug 175. also newer URL for config/pkg.m4
|
|
should have no impact on production performance and speed up debug
performance considerably, while making the code much cleaner. On some
benchmarks, debug builds now run _much_ faster.
We no longer have to sprinkle our code with things like:
if(debugTagIsOn("context")) {
Debug("context") << theContext << std::endl;
}
which we had to do to get around performance problems previously.
Now just writing:
Debug("context") << theContext << std::endl;
does the same in production and debug builds. That is, if "context"
debugging is off, theContext isn't converted to a string, nor is it
output to a "/dev/null" ostream. I've confirmed this. In production
builds, the whole statement inlines to nothing. I've confirmed this
too.
Also, "Debug" is no longer a #definition, so you can use it directly
in production builds where you couldn't previously, e.g.
if(Debug.isOn("paranoid:check_tableau")) {
checkTableau();
}
I'm leaving debugTagIsOn() for now, but marking it as deprecated.
|
|
|
|
|
