summaryrefslogtreecommitdiff
path: root/src/prop/minisat
AgeCommit message (Collapse)Author
2011-04-09changing the sat solver to assert propagated literals back to the theoriesDejan Jovanović
2011-04-01This commit is a merge from the "betterstats" branch, which:Morgan Deters
* Makes Options an "omnipresent thread-local global" (like the notion of the "current NodeManager" was already). Options::current() accesses this structure. * Removes Options from constructors and data structures everywhere (this cleans up a lot of things). * No longer uses StatisticsRegistry statically. An instance of the registry is created and linked to a NodeManager. * StatisticsRegistry::current() is similar to Options::current(), but the pointer is stowed in the NodeManager (rather than stored) * The static functions of StatisticsRegistry have been left, for backward compatibility; they now use the "current" statistics registry. * SmtEngine::getStatisticsRegistry() is a public accessor for the registry; this is needed by main() to reach in and get the registry, for flushing statistics at the end.
2011-03-30Add Valuation::getSatValue() so that theories can access the currentMorgan Deters
(propositional) assignment for theory atoms. Fixed Debug/Trace as discussed in bug ticket #252 and on the mailing list. This implementation leads to some compiler warnings in production builds, but these will be corrected in coming days. There appears to be a small speedup in the parser as a result of this fix: http://goedel.cims.nyu.edu/regress-results/compare_jobs.php?job_id=1902&reference_id=1886&p=5 Cleaned up a few CD Boolean attribute things. Various small fixes to coding guidelines / test coverage. This commit: * Resolves bug 252 (tracing not disabled in production builds) * Resolves bug 254 (implement CDAttrHash<>::BitIterator::find())
2011-03-25This is a merge from the "theoryfixes+cdattrhash" branch. The changesMorgan Deters
are somewhat disparate but belonged on the same branch because they were held back from trunk all for the same reason (to keep the trunk stable for furious bitvector development). Dejan has now given me the go-ahead for a merge. ========================================= THIS COMMIT CHANGES THE THEORY INTERFACE! ========================================= Theory constructors are expected to take an additional "Valuation*" parameter that each Theory should send along to the base class constructor. The base class Theory keeps the Valuation* in a d_valuation field for use by it and by its derived classes. Theory::getValue() no longer takes a Valuation* (it is expected to use d_valuation instead). This allows other theory functions to take advantage of getValue() for debugging or heuristic purposes. TODO BEFORE MERGE TO TRUNK: ****implement BitIterator find() in CDAttrHash<bool>. Specifically: * Added QF_BV support for SMT-LIB v2. * Two adjustments to the theory interface as requested by Tim King: 1. As described above. 2. Theories now have const access to the fact queue through base class functions facts_begin() and facts_end(); useful for debugging. * Added an "Asserted" attribute so that theories can check if something has been asserted or not (and therefore not propagate it). However, this has been disabled for now, pending more data on the overhead of it, and pending discussion at the 3/25/2011 meeting. * Do not define NDEBUG in MiniSat in assertion-enabled builds (so that MiniSat asserts are evaluated). * As a result of the new MiniSat assertions, some --incremental regressions had to be disabled; also, some bitvectors ?!! * Bug 71 is resolved by adding a specialization for CDAttrHash<> in the attribute package. * Fixes for some warnings flagged by clang. * System tests have arrived! So far mainly infrastructure for having system tests, but there is a system test aimed at improving code coverage of the printer package. * Minor other adjustments to documentation and coding to be more conformant to CVC4 policy. Tests have been performed to demonstrate that these changes have no or negligible effect on performance. In particular, changing the CDAttrHash<> doesn't have any real effect on performance or memory right now, since there is only one context-dependent boolean flag (as soon as another is added, the effect is noticeable but probably still slight).
2011-03-15real fix for bug 245, previous one was faultyDejan Jovanović
2011-03-15fix for bug 254, lemmas were propagating at lower levels, and the conflict ↵Dejan Jovanović
clauses asserting literal would overwrite the propagated literal let's see if i break the build again
2011-03-03fixing a type that caused the segfaults in the regressionsDejan Jovanović
2011-03-02fixing the big with lemma reallocation in minisat garbage collectionDejan Jovanović
2011-02-26Commit to fix bug 241 (improper "using namespace std" in a header). This ↵Morgan Deters
caused a number of latent errors in sources and headers to come up. Those are now fixed (by adding "using" or "std::" depending on the context). Took the opportunity to bring many rewriter sources in line with coding conventions.
2010-11-19Merge from ufprop branch, including:Morgan Deters
* Theory::staticLearning() for statically adding new T-stuff before normal preprocessing. UF's staticLearning() does transitivity of equality/iff, solving the diamonds. * more aggressive T-propagation for UF * new KEEP_STATISTIC macro to hide Theories from having to register/deregister statistics (and also has the advantage of keeping the statistic type, field name, and the 'tag' used to output the statistic in the same place---instead of scattered in the theory definition and constructor initializer list. See documentation for KEEP_STATISTIC in src/util/stats.h for more of an explanation). * more statistics for UF * restart notifications from SAT (through TheoryEngine) via Theory::notifyRestart() * StackingMap and UnionFind unit tests * build fixes/adjustments * code cleanup; minor other improvements
2010-11-15Changes to Solver and PropEngine to support lemmasOnDemand during solve but ↵Tim King
not yet in d_checkSat.
2010-11-12Some bug fixes in the SAT for lemmas, and an experiment with a more complete ↵Dejan Jovanović
(wr propagation) splitter in arithmetic.
2010-11-09Lemmas on demand work, push-pop, some cleanup.Dejan Jovanović
2010-10-27"make dist" fixes; a distribution tarball can now build and pass tests. ↵Morgan Deters
"make distcheck" fails only because one of the "clean" targets needs work in test/unit
2010-08-20updating the minisat restart parameters after running some experimentsDejan Jovanović
2010-08-16Fixing failures in minisatDejan Jovanović
2010-08-15(no commit message)Dejan Jovanović
2010-08-13renaming minisat .C to .cc Dejan Jovanović
2010-08-13Adding the changes to the original copyDejan Jovanović
2010-08-13Importing MiniSat2 070721 into trunkChristopher L. Conway
2010-08-13Removing newer version of MiniSat for Dejan's preferred importChristopher L. Conway
2010-08-13Importing MiniSat2 2.2.0 into trunkChristopher L. Conway
2010-08-13Removing old version of MiniSat for proper vendor importChristopher L. Conway
2010-07-03With this commit come a number of changes to build system to supportMorgan Deters
building with CLN or with GMP, the contrib/switch-config script (enabling "fast switching" of different configurations in the same builds/ directory), and also some minor changes. ./configure --with-gmp (or --without-cln) forces building with GMP and doesn't even look for CLN. Configure fails if GMP isn't installed. ./configure --with-cln (or --without-gmp) forces building with CLN and doesn't even look for GMP. Configure fails if CLN isn't installed. ./configure [no arguments] will detect what's installed. CLN is default, if it isn't installed, or is too old, GMP is looked for (and configure fails if neither is available). It is an error to specify --with-gmp --with-cln (or --without-* for both) at the same time. Building with CLN (whether forced or detected) adds a note to the configure output mentioning the fact that the build of CVC4 will be linked against a GPLed library and notifying the user of the --without-cln option. Building with GMP (whether forced or detected) affects the build directory, so CLN and GMP builds are kept separate. ./configure --with-cln debug builds in builds/$arch/debug ./configure --with-gmp debug builds in builds/$arch/debug-gmp The final binaries are linked explicitly against either gmp or cln, but not both. If linked against cln, cln pulls in gmp as a dependency, so the result will be linked against both. === Details that you probably don't care about === The headers src/util/{integer,rational}.h are generated from the corresponding .in versions. A user installing a CVC4-devel package will get the headers for rational and integer that match the library that s/he installs. The preprocessor #defines CVC4_GMP_IMP and CVC4_CLN_IMP are added to cvc4autoconfig.h. Only one is ever #defined. cvc4autoconfig.h doesn't need to be #included directly; you get it through #including cvc4_private.h (or the parser version). AM_CONDITIONALs are also defined so that Makefiles get the cln/gmp configuration. AC_SUBSTs are defined so that public headers (see src/util/{integer,rational}.h.in) can use the setting. *Public* headers that need to depend on the cln/gmp configuration can't use cvc4autoconfig.h, because we're keeping that in the private, internal-only space, never to be installed on users' machines. Here, something special is required, like the configure-level generation of headers that I used for src/util/{integer,rational}.h.in. Tim's Integer and Rational wrappers are the only bits of code that should care which library is used (and also src/util/configuration.h, which gives the user of the library information about how CVC4 is built), and possibly some unit tests (?).
2010-06-29Merging the unate-propagator branch into the trunk. This is a big update so ↵Tim King
expect a little turbulence. This commit will not compile. There will be a second commit that fixes this in a moment. I am delaying a change to avoid svn whining about a conflict.
2010-06-15fix last commit gcc options (-wunknown-pragmas ==> -Wno-unknown-pragmas)Morgan Deters
2010-06-15remove warnings about unknown #pragma GCC diagnostic on older compilersMorgan Deters
2010-05-25Some initial changes to allow for lemmas on demand. Dejan Jovanović
To be done: * Add erasable map Clause* to bool to minisat (backtracks with the solver) * Add map from Clause* to Node (clauses that came from a node) * Add reference counting Literal -> Node to CNFManager * If Literal -> Node refcount goes to zero, the clauses of Node can be erased (if eresable) * If clause is erased for each L in clause L -> Node refcount goes down
2010-04-15Adding info in the minisat READMEDejan Jovanović
2010-04-04* Node::isAtomic() now looks at an "atomic" attribute of argumentsMorgan Deters
instead of assuming it's atomic based on kind. Atomicity is determined at node building time. Fixes bug #81. If this is determined to make node building too slow, we can allocate another attribute "AtomicHasBeenComputed" to lazily compute atomicity. * TheoryImpl<> has gone away. Theory implementations now derive from Theory directly and share a single RegisteredAttr attribute for term registration (which shouldn't overlap: every term is "owned" by exactly one Theory). Fixes bug #79. * Additional atomicity tests in ExprBlack unit test. * More appropriate whitebox testing for attribute ID assignment (AttributeWhite unit test). * Better (and more correct) assertion checking in NodeBuilderBlack. * run-regression script now checks exit status against what's provided in "% EXIT: " gesture in .cvc input files, and stderr against "% EXPECT-ERROR: ". These can be used to support intended failures. Fixes bug #84. Also add "% EXIT: " gestures to all .cvc regressions in repository. * Solved some "control reaches end of non-void function" warnings in src/parser/bounded_token_buffer.cpp by replacing "AlwaysAssert(false)" with "Unreachable()" (which is known statically to never return normally). * Regression tests now use the cvc4 binary under builds/$(CURRENT_BUILD)/src/main instead of the one in bin/ which may not be properly installed yet at that point of the build. (Partially fixes bug #46.) * -fvisibility=hidden is now included by configure.ac instead of each Makefile.am, which will make it easier to support platforms (e.g. cygwin) that do things a different way. * TheoryUF code formatting. (re: my code review bug #64) * CDMap<> is leaking memory again, pending a fix for bug #85 in the context subsystem. (To avoid serious errors, can't free context objects.) * add ContextWhite unit test for bug #85 (though it's currently "defanged," awaiting the bugfix) * Minor documentation, other cleanup.
2010-04-01PARSER STUFF:Morgan Deters
* Other minor changes to the new parser to match coding guidelines, add documentation, .... * Add CFLAGS stuff to configure.ac parser Makefile.ams. This ensures that profiling, coverage, optimization, debugging, and warning level options will apply to the new parser as well (which is in C, not C++). This fixes the deprecated warning we were seeing this evening. * Now, if you have ANTLR_HOME set in your environment, you don't need to specify --with-antlr-dir to ./configure or have libantlr3c installed in standard places. --with-antlr-dir still overrides $ANTLR_HOME, and if the installation in $ANTLR_HOME is missing or doesn't work, the standard places are still tried. * Extend "silent make" to new parser stuff. * Added src/parser/bounded_token_buffer.{h,cpp} to the list of exclusions in contrib/update-copyright.pl and mention them as excluded from CVC4 copyright in COPYING. They are antlr3-derived works, covered under a BSD license. OTHER STUFF: * expr_manager.h, expr.h, expr_manager.cpp, and expr.cpp are now auto-generated by a "mkexpr" script. This provides the correct instantiations of mkConst() for public use, e.g., by the parser. * Fix doxygen documentation in expr, expr_manager.. closes bug #35 * Node::isAtomic() implemented in a better way, based on theory kinds files. Fixes bug #40. To support this, a "nonatomic_operator" command has been added. All other "parameterized" or "operator" kinds are atomic. * Added expr_black test * Remove kind::TRUE and kind::FALSE and make a new CONST_BOOLEAN kind that takes a "bool" payload; for example, to make "true" you now do nodeManager->mkConst(true). * Make new "cvc4_public.h" and "cvc4parser_public.h" headers. Private headers should include "cvc4_private.h" (resp. "cvc4parser_private.h"), which existed previously. Public headers should include the others. **No one** should include the autoheader #include (which has been renamed "cvc4autoconfig.h") directly, and public CVC4 headers can't access its #defines. This is to avoid us having the same distribution problem as libantlr3c. * Preliminary fixes based on Tim's code review of attributes (bug #61). This includes splitting hairy template internals into attribute_internals.h, for which another code review ticket will be opened. Bug is still outstanding, but pending further refactoring/documentation. * Some *HashFcns renamed to *HashStrategy to match refactoring done elsewhere (done by Chris?) earlier this week. * Simplified creation of make rules for generated files (expr.cpp, expr.h, expr_manager.cpp, expr_manager.h, theoryof_table.h, kind.h, metakind.h). * CVC4::Configuration interface and implementation split (so private stuff doesn't leak into public headers). * Some documentation/code formatting fixes. * Add required versions of autotools to autogen.sh. * src/expr/mkmetakind: fix a nonportable thing in invocation of "expr" that was causing warnings on Red Hat. * src/context/cdmap.h: add workaround to what appears to be a g++ 4.1 parsing bug.
2010-03-30Removing unnecessary .gitignoresChristopher L. Conway
2010-03-30Merging from branches/antlr3 (r246:354)Christopher L. Conway
2010-03-12* Added shutdown() functions to SmtEngine, TheoryEngine, PropEngine,Morgan Deters
DecisionEngine, and Theory. These are triggered from the SmtEngine dtor before the other engines are deleted. This is important because of potential issues with outstanding TNodes in Theory implementations (which fail if the destruction is done in the wrong order, in certain cases). * Favor "FactQueueResetter" instead of clearAssertionQueues() for resetting facts queue in Theory implementations. * Better theory-rewriting code. * Minor cleanups.
2010-03-11Fix for the main bug that was bugging me -- Bug 49. The assertions queue in ↵Dejan Jovanović
the theories didn't get cleared on SatSolver backtracking so there were unasserted literals being returned as part of some conflicts. Sat solver now explicitely calls in the theory engine after it backtracks in order to clear the queues (clearAssertionQueues). Also, changed the let.smt as it used to exibit "single literal conflict" problem. The sat solve can not except conflicts similar to (x != x), these should be rewritten to false during pre-processing. Adding 3 more small problems from the library that we can solve now to the regressions.
2010-03-09(no commit message)Dejan Jovanović
2010-03-08adding simple-uf to the regressions, and the code that apparently solves itDejan Jovanović
2010-03-08some more sat stuff for tim: assertions now go to theory_uf Dejan Jovanović
2010-03-04Adding phase-caching to minisat. Dejan Jovanović
(A Lightweight Component Caching Scheme for Satisfiability Solvers <http://www.springerlink.com/content/y802q03263x84159/>)
2010-03-03Some SAT stuff, not doing anything special yet, just to keep it in sync.Dejan Jovanović
2010-02-26* test/unit/context/context_black.h: Test CDList<>. In particular,Morgan Deters
test behavior of grow(), which was previously very broken, fixed by Tim earlier this afternoon. * add the notion of a "private header". Private header files (those not intended for distribution) should now #include "cvc4_private.h" (or "cvc4parser_private.h" for the parser code). When not actually building libcvc4 (resp. libcvc4parser), or associated unit tests, a warning is emitted by the preprocessor. This should make it easier to notice (and disentangle early) any unwanted public/private mixing. Currently the warning identifies a couple places where we need to fix things. * added directory infrastructure for arrays and BV theories. * the Theory inheritance hierarchy makes some assumptions about the way inheritance is done. These are checked at runtime when CVC4_ASSERTIONS is on. See src/theory/theory.h's TheoryImpl<> definition for details. * src/theory/booleans/theory_bool.h, src/theory/booleans/theory_def.h, src/theory/arith/theory_arith.h, src/theory/arith/theory_def.h, src/theory/uf/theory_uf.h, src/theory/uf/theory_def.h, src/parser/antlr_parser.h: minor code formatting fixes as per policy. * src/theory/uf/theory_uf.cpp: fix for non-debug builds. * src/util/options.h, src/util/model.h, src/util/result.h, src/expr/type.h: make CVC4_PUBLIC. * src/util/decision_engine.h: no longer CVC4_PUBLIC. * src/expr/expr_manager.cpp: ExprManager::booleanType() and ExprManager::kindType() weren't returning a value ?! Fixed. * src/expr/expr_manager.h, src/expr/node_manager.h: ExprManager no longer depends on NodeManager (public/private interface mixing). ExprManagerScope is an internal implementation detail, and is moved to node_manager.h. * src/expr/node.h: mark gdb debug routines as "used" so that GCC always emits code for them (even though its static analysis shows they're unused).
2010-02-09Changes to the CNF conversion and the SAT solver. All regression pass now, ↵Dejan Jovanović
and we're ready for nightly testing. We should not add regression tests that test future behaviour, as the builds will nag for all failing regressions. Thus, I've separated the multi-query regressions into multiple regressions until the cnf/context/sat is able to handle it. Also, fixed a typo in the CVC parser.
2010-02-03adding an option to minisat to not do any debug checks/outputDejan Jovanović
2010-02-03Addressed many of the concerns of bug 10 (build system code review).Morgan Deters
Some parts split into other bugs: 19, 20, 21. Addressed concerns of bug 11 (util package code review). Slight parser source file modifications: file comments, #included headers in generated parsers/lexers Added CVC4::Result propagation back through MiniSat->PropEngine->SmtEngine->main(). Silenced MiniSat when verbosity is not requested.
2010-01-28Removing Makefile.in'sChristopher L. Conway
2010-01-26fixes to build structure, util classes, lots of fixes to Node and ↵Morgan Deters
NodeBuilder. outstanding SEGVs fixed
2009-12-17build system cleanup; test system separation into white-box, black-box, and ↵Morgan Deters
public tests
2009-12-17support nonstandard, unconfigured builds (e.g., "./configure debug" followed ↵Morgan Deters
by "make production ASSERTIONS=1")
2009-12-16Fixes to the build system:Morgan Deters
Makefile.am files - remove obsolete INCLUDES, incorporate into AM_CPPFLAGS Makefile files in src/ - support "make" under src/ (current build profile) configure.ac - updates to fix warnings config/antlr.m4 - updates to fix warnings autogen.sh - updates to generate warnings from autotools; also support Macs src/include/cvc4_config.h - guard with #ifdef total reimplementation of NodeBuilder ExprValue => NodeValue context_mm.{h,cpp} - fixed numerous compile errors
2009-12-11build fixes, configuration simplificationsMorgan Deters
generated by cgit on debian on lair
contact matthew@masot.net with questions or feedback