Gereon Kremer [Fri, 13 May 2022 01:15:27 +0000 (18:15 -0700)]
Update CoCoALib version (#8757)
This PR updates our cmake scripts for CoCoALib to use the latest and greatest version.
While we don't actually want to use any of the new features, the new version finally uses an Apache license!
Andrew Reynolds [Fri, 13 May 2022 00:57:01 +0000 (19:57 -0500)]
Minor refactoring for sep theory (#8753)
Work towards fixing #8659.
Andrew Reynolds [Thu, 12 May 2022 21:04:56 +0000 (16:04 -0500)]
Fix type of null terminator for ADD/MULT for LFSC (#8762)
This fixes many LFSC proof failures that are occurring now because of using 1.0 instead 1 as null terminator for MULT, and 0.0 instead of 0 for ADD.
Andrew Reynolds [Thu, 12 May 2022 19:37:28 +0000 (14:37 -0500)]
Eliminate use of subtypes from remainder of type rules (#8756)
This PR should be added before the minor release that advertises our policy change for subtyping.
Andrew Reynolds [Thu, 12 May 2022 17:48:27 +0000 (12:48 -0500)]
Preserve types in rewriter and make core type rules strict (#8740)
This is the key step for eliminating the use of subtyping.
This makes several changes:
(1) CONST_INTEGER is now used for integer constants, which is now exported in the API. The type rule for CONST_RATIONAL is changed to always return Real, even if its value is integral. This means we can distinguish real and integer versions of the integers. Note this also implies that the rewriter now fully preserves types, as rewriting TO_REAL applied to a constant integer will return a constant integral rational.
(2) The type rules for EQUAL, DISTINCT, ITE and APPLY_UF are made strict, in other words, we given a type exception for equalities between an Int and a Real. This restriction impacts the API.
(3) The arithmetic rewrite for (Real) equality casts integers to reals as needed to ensure Reals are only made equal to Reals. The net effect is that TO_REAL may appear on either side of equalities.
(4) The core arithmetic theory solver is modified in several places to be made robust to TO_REAL occurring as the top symbol of sides of equality.
Several assertions are strengthened or added to ensure that equalities and substitutions are between terms of the same type, when it is necessary to do so.
Two quantifiers regressions are modified since the solving techniques are not robust to TO_REAL. A few unit tests are fixed to use proper types.
Haniel Barbosa [Thu, 12 May 2022 05:30:00 +0000 (02:30 -0300)]
[docs] Marking internal comment in proofs docs (#8747)
Gereon Kremer [Thu, 12 May 2022 04:52:31 +0000 (21:52 -0700)]
Make regular options access const (#8754)
One of the loose ends of the options refactor is that internal code can write to options at will, even when the accessing it via Env::getOptions() which returns a const reference. There are technical reasons for this, C++ does not propagate the constness into reference members.
This PR changes this behaviour by making the references members we use all over the place (options().smt.foo) const references and adding new functions writeSmt() which allow write access -- if you have a non-const handle to the options object.
In order to do that, this PR also changes all places that legitimately change the options (options handlers, set defaults, solver engine and places where we spawn subsolvers) to use the new syntax. After that, only a single place remains: the solver engine attempts to write the filename (from Solver::setInfo("filename", "...");) into the original options (that are restored to the new solver object after a reset. As only the API solver has write access to this, it is moved to the Solver::setInfo() method.
With this PR, all internal code is properly guarded against erroneous (and reckless) changing of options.
Fixes cvc5/cvc5-projects#12.
Gereon Kremer [Wed, 11 May 2022 18:13:31 +0000 (11:13 -0700)]
Remove --build from GMP configure line (#8752)
This is an attempt to fix the pypi build.
Andrew Reynolds [Wed, 11 May 2022 14:58:22 +0000 (09:58 -0500)]
Relax an assertion in the evaluator (#8751)
In a rare case this can throw after https://github.com/cvc5/cvc5/pull/8740, complaining that `(/ 0.0 0)` and `(/ 0.0 0.0)` are not the same.
Gereon Kremer [Tue, 10 May 2022 21:23:20 +0000 (14:23 -0700)]
Ensure substitutions in nonlinear solver are properly typed (#8748)
We would apply substitutions between int and real terms, effectively hiding the intness of variables from the coverings solver.
Fixes #8744.
The example from #8744 times out after the fix, thus no regression.
Gereon Kremer [Tue, 10 May 2022 17:47:52 +0000 (10:47 -0700)]
Fix some issues with the Python API tests (#8746)
This PR addresses a few issues in the Python API:
the implementation of defineFunsRec() lacked the call to the C++ function
a bunch of tests for defineFunsRec() were missing
the test for getInstantiations() was incorrectly named and thus not valled.
add missing test for hashing of Sort
Gereon Kremer [Tue, 10 May 2022 14:55:44 +0000 (07:55 -0700)]
Add test coverage for almost everything from the Java API (#8723)
This PR adds tests for almost everything that is not yet covered by the java API tests.
Gereon Kremer [Tue, 10 May 2022 08:18:15 +0000 (01:18 -0700)]
Compress debug symbols to make libcvc5 smaller (#8743)
This adds `-gz` which compresses the debug symbols to make debug builds smaller. In my setup, `libcvc5.so` shrinks to about half its size from ~450MB to ~225MB.
Andrew Reynolds [Mon, 9 May 2022 19:28:52 +0000 (14:28 -0500)]
Improvements for evaluation in model (#8738)
This marks APPLY_SELECTOR and SEQ_NTH as unevaluatable kinds.
This means that get-value applied to applications of them e.g. (seq.nth t) will evaluate to c if (seq.nth t) is in the same equivalence class as constant c. (Note that this could be further improved to reason by congruence for (seq.nth s) where s = t, which I'm considering to do on a followup PR).
This removes many of the required -q from the command line arguments of our regressions. This also does some minor cleanup to our regressions to remove -q from further regressions.
Andrew Reynolds [Mon, 9 May 2022 18:29:35 +0000 (13:29 -0500)]
Do not depend on subtyping for APPLY_UF in TPTP parser (#8737)
Andrew Reynolds [Mon, 9 May 2022 17:05:28 +0000 (12:05 -0500)]
Add unit tests for getInstantiations (#8741)
Andrew Reynolds [Sat, 7 May 2022 14:33:17 +0000 (09:33 -0500)]
Do not rely on subtyping in real-to-int preprocessing pass (#8732)
Abdalrhman Mohamed [Sat, 7 May 2022 02:49:24 +0000 (21:49 -0500)]
Disable proof testers for delicate regressions. (#8735)
This PR disables regress2/nl/ufnia-factor-open-proof.smt2 benchmark which fails with some debug builds in the nightlies. We should consider adding an option to disable testers under certain build configs. This PR also ensures that the lfsc tester displays all the options used to generate the LFSC proof.
Andrew Reynolds [Sat, 7 May 2022 02:22:12 +0000 (21:22 -0500)]
More preparation for strict type rules (#8733)
This is work towards making equalities and substitutions between terms of equal types.
Andrew Reynolds [Sat, 7 May 2022 01:29:55 +0000 (20:29 -0500)]
Fix proofs for ppAssert for theory Bool (#8708)
Fixes #8705.
This also impacts unsat cores when proofs are enabled.
Andrew Reynolds [Fri, 6 May 2022 22:36:04 +0000 (17:36 -0500)]
Fallback for sequential substitution proof reconstruction (#8730)
This makes our proof reconstruction fallback to a trivial sequential reconstruction in very rare cases where a sequential substitution fails to reconstruct. This can happen in some rare cases where terms are used in the domain of a substitution that otherwise would be modified by earlier substitutions. This occurs on 2 QF_SLIA benchmarks, attached is a delta-debugged version.
This also changes a warning message to a trace for this case, as a warning message may cause LFSC proof checking to fail when it should just give a warning for a TRUST_SUBS step, which is the default behavior regardless.
Andrew Reynolds [Fri, 6 May 2022 22:06:07 +0000 (17:06 -0500)]
Eliminate arithmetic subtyping for (dis)equalities from TPTP parser (#8724)
Towards making equality strictly typed / eliminating arithmetic subtyping.
Andrew Reynolds [Fri, 6 May 2022 21:40:49 +0000 (16:40 -0500)]
Separate ill-typed portion of arith models (#8734)
This makes it so that the ill-typed portion of arithmetic models is not included in the main arithModel map.
Conceptually, we should not include entries in the arithmetic model that violate type constraints since these should never be used e.g. in non-linear to justify whether a model is correct. Instead, by not including that value, we assume that no value was given for that variable. Sanity checking of the arithmetic model then needs only to access the ill-typed portion of the model directly.
This makes it so that strict type invariants can be enforced in the non-linear solver's model.
Andrew Reynolds [Fri, 6 May 2022 15:48:49 +0000 (10:48 -0500)]
Fix LFSC side condition for matching premise of concat_unify (#8726)
Occurs in QF_SLIA/
20180523-Reynolds/pyex/peterc-pyex-doc-cav17-td/pymongo/pymongo-mongoclient/
cc647bd246e485aa31a4dc8978e5211a7c1336911d1bfc78b45ee679.smt2 after 464 seconds on my machine.
Gereon Kremer [Thu, 5 May 2022 20:54:48 +0000 (13:54 -0700)]
Add test coverage for almost everything from the Python API (#8720)
This PR adds tests for almost everything that is not yet covered by the python API tests.
Andrew Reynolds [Thu, 5 May 2022 19:13:41 +0000 (14:13 -0500)]
Preparation for making equality strictly typed (#8728)
This changes several places in arithmetic so that it never generates equalities between and an Int and a Real.
It also changes several uses of mkConstReal on integer values with mkConstInt whenever their type does not matter.
Since we do not construct CONST_INTEGER yet, this PR has no behavior change yet.
Andrew Reynolds [Thu, 5 May 2022 18:35:31 +0000 (13:35 -0500)]
Fix cache in learned rewrite preprocessing pass (#8725)
Fixes #8722.
Andrew Reynolds [Thu, 5 May 2022 16:52:26 +0000 (11:52 -0500)]
Fix more issues with subtypes in regressions (#8727)
In preparation for making type rule for equality strict.
mudathirmahgoub [Thu, 5 May 2022 13:41:30 +0000 (08:41 -0500)]
Add operators table.aggr and table.join (#8681)
Andrew Reynolds [Thu, 5 May 2022 01:26:46 +0000 (20:26 -0500)]
Use purification for set comprehension reduction (#8711)
Currently, the reduction lemma does not purify set comprehension from its reduction predicate. This means that our rewriter (if it were smart enough) should rewrite the reduction predicate to true.
Moreover, a new forthcoming model-based instantiation technique was giving wrong answers when set comprehensions were present since it could prove the reductions were tautological.
Andres Noetzli [Wed, 4 May 2022 20:54:41 +0000 (13:54 -0700)]
Improve finding Python library/includes (#8718)
On macOS, find_package(PythonLibs ...) does not find the Python
include directory or library when they were installed via homebrew.
find_package(Python ...) is more robust, but only available on newer
versions of CMake. If we are compiling cvc5 on macOS and we have a newer
version of CMake available, this tries to use find_package(Python ...)
to find the paths.
yoni206 [Wed, 4 May 2022 20:35:32 +0000 (23:35 +0300)]
fix link to `Testing cvc5` in `INSTALL.md` (#8675)
The current link renders strangely and does not lead to the relevant subsection. This PR fixes that.
Andrew Reynolds [Wed, 4 May 2022 19:44:39 +0000 (14:44 -0500)]
Make equality solver the entry point for all equality engine explanations in arithmetic (#8719)
This makes it so that EqSolver is the main entry point for all equality engine explanations in arithmetic; it still defers to the CongruenceManager to compute these explanations.
To do this, when the core linear solver depends on an explanation from the equality engine, it instead provides a placeholder. Since explanations are computed recursively in TheoryEngine, this will trigger another call to TheoryArith::explain, which will then be handled by the EqSolver. Thus, there should be no net effect on the overall explanations in this commit.
This is work towards eliminating the dependency of the linear solver on the equality engine.
Gereon Kremer [Wed, 4 May 2022 17:21:41 +0000 (10:21 -0700)]
Make printStatisticsSafe public (#8721)
Solver::printStatisticsSafe() is private right now. There is no real reason for that, and as we claim that the driver is only using the regular API we should just make it public.
Andrew Reynolds [Wed, 4 May 2022 16:46:55 +0000 (11:46 -0500)]
Add declareOracleFun interface to SolverEngine (#8622)
After this PR, declare-oracle-fun will be added to the API and parser.
Andrew Reynolds [Wed, 4 May 2022 15:03:16 +0000 (10:03 -0500)]
Refactor oracles using new std::function backend (#8717)
This also updates several places to be generalized to methods that return a vector of Nodes. Previously we had assumed a use case returning a single node.
After this PR, #8622 will be updated to use the new std::function interface.
Andrew Reynolds [Wed, 4 May 2022 07:28:31 +0000 (02:28 -0500)]
Remove unecessary calls to equality engine from congruence manager (#8715)
Removes a deprecated explain interface.
Gereon Kremer [Wed, 4 May 2022 03:07:29 +0000 (20:07 -0700)]
Remove obsolete private methods from API (#8716)
This PR removes two private utilities from the API: Sort::sortSetToTypeNodes and one DatatypeDecl constructor.
Andrew Reynolds [Wed, 4 May 2022 01:25:04 +0000 (20:25 -0500)]
Fix rewrite for to_real in division by zero (#8714)
Fixes #8712.
Andrew Reynolds [Wed, 4 May 2022 00:15:30 +0000 (19:15 -0500)]
Add support for oracle constant nodes (#8707)
This is the beginning of a refactoring to make std::function the basis for oracles internally, not binary names.
Andrew Reynolds [Tue, 3 May 2022 20:58:34 +0000 (15:58 -0500)]
Fix LFSC node converter for 0-ary tuples (#8706)
Was missing 0-ary Tuple case for type-as-node.
Also removes a spurious check in the user-defined sorts case.
Fixes some issues in the nightlies.
Andres Noetzli [Tue, 3 May 2022 20:35:27 +0000 (13:35 -0700)]
Update LFSC version (#8713)
This updates the get-lfsc-checker script to get the latest version of
LFSC, which supports older versions of CMake.
Andrew Reynolds [Tue, 3 May 2022 19:47:44 +0000 (14:47 -0500)]
Use (non-recursive) unpurified form instead of original form for defining Skolems (#8699)
This modifies our treatment of purification Skolems in the internal proof calculus. In particular, we now use an "unpurified form" instead of "original form" for defining Skolems. SKOLEM_INTRO is modified to prove the equality between a skolem and its unpurified form.
For example:
k1 purifies (ite A B C)
k2 purifies (+ k1 1)
The unpurified form of k2 is (+ k1 1), its original form is (+ (ite A B C) 1).
As a consequence:
(1) Our global skolem sharing is now slightly weaker, for example a k3 could be constructed whose unpurified form is (+ (ite A B C) 1); previously this would guaranteed to be k1.
(2) We do not require recursively computing the original form of terms when constructing purification Skolems,
(3) The witness form proof generator requires a fix point.
(4) The LFSC signature is simplified, and does not require a side condition to recursively compute the original form of a Skolem.
Fixes cvc5/LFSC#81.
Aina Niemetz [Tue, 3 May 2022 17:35:39 +0000 (10:35 -0700)]
docs: Some fixes in options docs. (#8710)
Andrew Reynolds [Tue, 3 May 2022 14:55:43 +0000 (09:55 -0500)]
Change option name for mbqi in fmf (#8701)
In preparation for a new basic implementation of MBQI.
Andrew Reynolds [Tue, 3 May 2022 03:03:51 +0000 (22:03 -0500)]
Simplify representation of datatypes at the TypeNode level (#8702)
They previously were TYPE_CONSTANTs hashed by the index of their DType in the NodeManager. Now they are variables having an attribute that is their index.
This makes datatypes more analogous to uninterpreted sorts, and eliminates the need for an auxiliary DatatypeIndexConstant class.
Andrew Reynolds [Tue, 3 May 2022 02:36:33 +0000 (21:36 -0500)]
Final preparation for CONST_INTEGER (#8700)
With this PR, CI passes when using CONST_INTEGER instead of (all) integral CONST_RATIONAL.
This does not make this change yet, so CONST_RATIONAL is still used throughout.
Andrew Reynolds [Tue, 3 May 2022 00:23:04 +0000 (19:23 -0500)]
Migrate basic EqualityEngine management from CongruenceManager to EqSolver (#8684)
This is work towards having the linear arithmetic solver not impose restrictions on equalities.
The linear arithmetic solver using a CongruenceManager which involves many non-standard uses of the equality engine.
The responsibilities of the CongruenceManager should be migrated to the arithmetic EqSolver, which manages the equality engine in the default way.
This PR is the first step. It makes it so that the memory management and notifications of the equality engine are now solely the responsibility of the EqSolver.
All relevant notifications from the EqSolver are directly forwarded to CongruenceManager. Thus there are no significant behavior changes in this PR.
This PR required removing the experimental option arithCongMan, which forces having the CongruenceManager and the EqSolver both use equality engines.
Amalee Wilson [Mon, 2 May 2022 23:42:10 +0000 (16:42 -0700)]
Add strict-cube and decision-trail partitioning strategies (#8651)
Add the strict-cube modification to the revised partitioning algorithm and add the full-trail partitioning strategy.
Andrew Reynolds [Mon, 2 May 2022 22:32:39 +0000 (17:32 -0500)]
More robust treatment of flattening in arith rewriter (#8695)
Currently can allow rewritten forms to be rewritable.
Fixes #8692. Fixes #8693. Fixes #8697.
Andrew Reynolds [Mon, 2 May 2022 21:58:14 +0000 (16:58 -0500)]
Make arith msum utility agnostic to Int (#8694)
This utility should continue to assume arithmetic subtypes.
Fixes #8691.
Gereon Kremer [Mon, 2 May 2022 21:08:58 +0000 (14:08 -0700)]
Add missing tests for some corners of the API (#8688)
This PR adds a bunch of unit tests for some not yet covered corners of the API.
Aina Niemetz [Mon, 2 May 2022 20:13:00 +0000 (13:13 -0700)]
docs: Do not use explicit line numbers in literalinclude. (#8690)
Andrew Reynolds [Mon, 2 May 2022 19:11:22 +0000 (14:11 -0500)]
Further refactoring in preparation for CONST_INTEGER (#8687)
Miscellaneous refactorings from trying to enable CONST_INTEGER.
Andrew Reynolds [Mon, 2 May 2022 00:32:32 +0000 (19:32 -0500)]
Fix tuple printing in LFSC (#8696)
We weren't collecting them as user-defined types after the recent refactor to Tuples.
Andrew Reynolds [Fri, 29 Apr 2022 21:49:13 +0000 (16:49 -0500)]
Properly represent Tuples in the TypeNode AST (#8648)
This makes it so that Tuple types are properly represented in the AST. It also removes a spurious restriction that disallowed higher-order tuples (this was leftover from a very old sanity check in the old API).
For example, a tuple type over (Int, Int) is now (TUPLE_TYPE INT INT) instead of a DATATYPE_TYPE constant.
Tuple types behave exactly like datatypes; we can still retrieve their DType as before.
This is in preparation for gradual types and symbolic tuple projections.
Andres Noetzli [Fri, 29 Apr 2022 20:49:21 +0000 (13:49 -0700)]
Add simple type rule for real-or-int arguments (#8685)
This adds a simple type rule, ARealOrInteger, which checks whether the
argument of an operator is either a Real or and Int. Note that this
is currently equivalent to AReal, but the plan is to make AReal
strict in the future.
Gereon Kremer [Fri, 29 Apr 2022 20:30:07 +0000 (13:30 -0700)]
Replace mkConst(CONST_RATIONAL) by mkConstReal (#8686)
This PR removes the usages of CONST_RATIONAL in the nonlinear arithmetic solver.
Andrew Reynolds [Fri, 29 Apr 2022 19:35:04 +0000 (14:35 -0500)]
Towards proper usage of TO_REAL (#8680)
This is work towards making the rewriter preserve types, which is work towards eliminating subtyping.
This makes it so that the arithmetic rewriter does not simply drop TO_REAL from all terms, as this may change the type of the Node. Instead, TO_REAL is pulled upwards, and can be removed beneath arithmetic relations. TO_REAL is not eliminated if it occurs as a child of an operator not belonging to arithmetic. For example if x,y : Int:
(= (+ (to_real x) y) 0.0) ---> (= (to_real (+ x y)) 0.0) ---> (= (+ x y) 0.0) ; note this is the same rewritten form as before
(P (+ (to_real x) y)) ---> (P (to_real (+ x y))).
The one exception is that to_real applied to constants is simply dropped (for now), for example:
(to_real 5) ---> 5
where above, a Real term is rewritten to an Int term. (Fixing this will require further PRs that make integer constants of kind CONST_INTEGER and integral CONST_RATIONAL have Real type, thus we can have the above rewrite return 5 that is constant and has type Real).
Several quantifiers utilities are patched to preserve their behavior wrt handling TO_REAL.
Finally, a few fixes for subtypes are made to the regressions that we were not catching as errors before, and adds one regression.
The net effect of this PR is that the rewritten form of terms may have to_real applications that occur as direct children of symbols from other theories. Special care is required for preregistration, shared terms, and getting model values in the linear solver to strip off TO_REAL if necessary before using the (unmodified) interface to the linear solver.
FYI @barrettcw
Andres Noetzli [Fri, 29 Apr 2022 18:45:21 +0000 (11:45 -0700)]
Document non-standard string operators (#8679)
This adds documentation for `str.indexof_re`, `str.update`, `str.rev`,
`str.to_lower`, and `str.to_upper`. Note that it moves the documentation
of strings to the "non-standard or extended theories".
Andrew Reynolds [Fri, 29 Apr 2022 17:49:05 +0000 (12:49 -0500)]
Ensure mkConstInt is used on integral rationals only (#8683)
This is work towards using CONST_INTEGER for integer constants.
This corrects a few places that incorrectly assumed that integers were necessary.
Andrew Reynolds [Fri, 29 Apr 2022 15:43:55 +0000 (10:43 -0500)]
Refactor interfaces for E-matching (#8665)
InstMatch objects are now fully owned by Triggers. They are passed by reference to InstMatchGenerators.
This also simplifies the interfaces by not passing the quantified formulas.
This is in preparation for making InstMatch objects carry entailment test information.
Andrew Reynolds [Fri, 29 Apr 2022 15:22:20 +0000 (10:22 -0500)]
Make extended rewriter use standard Subs utility (#8682)
This is work towards ensuring all substitutions are strictly typed.
Abdalrhman Mohamed [Fri, 29 Apr 2022 03:58:16 +0000 (22:58 -0500)]
Add an option to enable all testers. (#8676)
yoni206 [Fri, 29 Apr 2022 03:38:35 +0000 (06:38 +0300)]
Add missing parenthesis for bags documentation (#8673)
Gereon Kremer [Fri, 29 Apr 2022 03:21:12 +0000 (20:21 -0700)]
Add unit test for code not exposed by java API (#8678)
This PR adds a C++ unit test that explicitly calls into API functions that are not exposed by the java API. This fixes the issue of false positives in our API coverage checks, as some parts of the C++ API are legitimately not used by the java API.
It also corrects a few other minor issues.
Gereon Kremer [Fri, 29 Apr 2022 01:09:03 +0000 (18:09 -0700)]
Add unit test for code not exposed by python API (#8677)
This PR adds a C++ unit test that explicitly calls into API functions that are not exposed by the python API. This fixes the issue of false positives in our API coverage checks, as some parts of the C++ API are legitimately not used by the python API.
Gereon Kremer [Fri, 29 Apr 2022 00:47:10 +0000 (17:47 -0700)]
Add some missing API tests (#8669)
This PR adds a couple of simple API tests for parts of the API that are not covered yet.
Gereon Kremer [Thu, 28 Apr 2022 18:30:46 +0000 (11:30 -0700)]
Move tests around (#8670)
This PR moves two tests that dealt with particular issues out of unit/api/cpp (which should only have generic unit tests). They are now in unit/theory and api/cpp/.
yoni206 [Thu, 28 Apr 2022 17:08:43 +0000 (20:08 +0300)]
int-blaster: not allowing higher order functions (#8674)
Currently we throw an OptionException if higher order logic is enabled, but we only check this once we reach an APPLY_FUN node.
This PR does the check regardless of APPLY_FUN, thus capturing, e.g. BAG_MAP.
Fixes cvc5/cvc5-projects#415.
The PR also includes a simplified version of the test from that issue.
Andrew Reynolds [Thu, 28 Apr 2022 16:38:28 +0000 (11:38 -0500)]
Move datatype split inference scheme to its own method (#8664)
Andrew Reynolds [Thu, 28 Apr 2022 13:42:58 +0000 (08:42 -0500)]
Clean code for datatypes split (#8667)
Non-moving version of #8664.
Andrew Reynolds [Thu, 28 Apr 2022 12:27:32 +0000 (07:27 -0500)]
Make labelled separation logic asserts preserve labels (#8671)
This is a first step towards fixing #8659.
The issue is that when two labels are equal, we assume they refer to subheaps of the same heap. This is incorrect for magic wand. This ensures we preserve labels, a further PR will ensure that syntactic equality on labels (instead of semantic equality) is used for knowing when two pto constraints must be unified. This means that SEP_LABEL nodes should never be rewritten.
Andrey Andreyevich Bienkowski [Thu, 28 Apr 2022 01:22:03 +0000 (01:22 +0000)]
Fix PyUnicode_AsWideCharString signature (#8522)
Add proper exception specification to the `PyUnicode_AsWideCharString` signature.
Gereon Kremer [Thu, 28 Apr 2022 00:51:20 +0000 (17:51 -0700)]
Add resource limiting to coverings solver (#8672)
Right now, resource limits are not checked while the coverings solver is computing. This PR adds a new resource and spends it within every recursive call of the coverings solver. This fixes cases where cvc5 does not honor the per-call time limit on QF_NRA.
Andrew Reynolds [Wed, 27 Apr 2022 19:12:07 +0000 (14:12 -0500)]
Add option to apply constant propagation for all learned literals (#8668)
Adds `--simplification-bcp`, disabled by default.
Andrew Reynolds [Wed, 27 Apr 2022 13:25:36 +0000 (08:25 -0500)]
Refactoring of initial lemmas in datatypes (#8666)
This is work towards revising how/when the datatypes instantiate rule is applied.
This simplifies the management of when new terms are registered in the theory of datatypes.
We now use the equality engine's eqNotifyNewClass callback to know when a term should be considered. Previously, this was split over two methods (additionally, collectTerms).
Most importantly, this eliminates the need for a manual addition of the "instantiated constructor term" in getInstantiateCons, which complicates the logic for the impact of applying the datatypes instantiate rule.
Andrew Reynolds [Wed, 27 Apr 2022 00:01:39 +0000 (19:01 -0500)]
Minor improvements for entailment test (#8663)
Makes some minor improvements to the existing (non-incremental) entailment tests, based on comparing with a new implementation.
Andrew Reynolds [Tue, 26 Apr 2022 23:38:14 +0000 (18:38 -0500)]
Minor improvements to quantifiers utilities (#8661)
Andrew Reynolds [Tue, 26 Apr 2022 22:37:37 +0000 (17:37 -0500)]
Make IndexTrie take nodes (#8649)
This makes the class easier to use and allows for a usage where the null node is interpreted as specifying all nodes.
This is in preparation for using this class for testing whether an instantiation from any instantiation strategy is currently feasible based on learning in the style of fail masks from Janota et al FMCAD 2021.
Also, this class should be renamed to something more appropriate, since it no longer takes indices.
FYI @MikolasJanota
Andrew Reynolds [Tue, 26 Apr 2022 22:06:45 +0000 (17:06 -0500)]
Move rep set iterator to its own file (#8647)
Andrew Reynolds [Tue, 26 Apr 2022 21:43:27 +0000 (16:43 -0500)]
Refactor InstMatch (#8646)
Also simplifies the (old) version of multi trigger matching, which copied InstMatch objects unnecessarily, and also used EqualityEngine iteration instead of iterating on a trie.
This is in preparation for making InstMatch objects optionally track fast (and generalized) failures based on configurable criteria.
Andrew Reynolds [Tue, 26 Apr 2022 19:56:40 +0000 (14:56 -0500)]
Refactor mkRep option for instantiation (#8657)
This removes mkRep as an option for addInstantiation.
It adds a new interface for making term vectors representative, which is required for FMF instantiation.
Gereon Kremer [Tue, 26 Apr 2022 17:17:23 +0000 (10:17 -0700)]
Add some missing resultants in the coverings solver (#8662)
This PR fixes a subtle corner case in the generalization within the coverings solver. When generalizing a single interval that spans the whole real line (i.e. from -infty to infty) that is based on multiple polynomials (most likely because the origin constraint factored) we did not include their pairwise resultants.
This detail is arguably missing in the paper, or rather hidden in a very vague notion of "performing standard CAD simplifications".
Fixes #8638.
Andrew Reynolds [Tue, 26 Apr 2022 15:45:45 +0000 (10:45 -0500)]
Simplify internal represenation of uninterpreted sorts (#8660)
Andres Noetzli [Tue, 26 Apr 2022 02:06:19 +0000 (19:06 -0700)]
Fix GMP cross-compilation when Wine installed (#8645)
When Wine is installed on the system, our current invocation of GMP's
`configure` fails. To fix the issue, we pass `CC_FOR_BUILD` that is used
to compile build-time programs. When compiling GMP with `--enable-cxx`,
it also seems to be necessary to pass `--build` to make `configure`
pass. Passing `--build` for cross-compilation builds is also recommended
by the [GMP documentation](https://gmplib.org/manual/Build-Options).
Andrew Reynolds [Tue, 26 Apr 2022 01:16:55 +0000 (20:16 -0500)]
Simplify internal representation of instantiated sorts (#8620)
Previously, sort constructors were stored as underlying operator of the NodeValue of instantiated sorts. This made it very difficult to access what sort constructor was used to construct the uninterpreted sort. Moreover, this representation made it virtually impossible to have a clean implementation of the LFSC printer for instantiated uninterpreted sorts, which requires renaming sort constructors.
This introduces a new kind INSTANTIATED_SORT_TYPE, which acts as an uninterpreted sort. The sort constructor is stored as the first child in its AST, which is analogous to parametric datatypes. It furthermore restricts SORT_TYPE to 0 children.
This is work towards having correct LFSC proof output when the input contains instantiated uninterpreted sorts.
Andres Noetzli [Mon, 25 Apr 2022 21:50:14 +0000 (14:50 -0700)]
[Regressions] Use Wine for Windows builds (#8652)
This changes our build system to use Wine when we are testing a
cross-compiled Windows build. It updates the post-processing in the
regression script to remove `\r` characters and updates two regressions
to make them compatible with Windows builds.
Andrew Reynolds [Mon, 25 Apr 2022 20:07:51 +0000 (15:07 -0500)]
Move VTS term cache to term registry (#8656)
This is in preparation for simplifying the interface to Instantiate::addInstantiation, where the VTS cache can be consulted to ask if VTS is necessary.
Andrew Reynolds [Mon, 25 Apr 2022 19:00:51 +0000 (14:00 -0500)]
Option exception for quantified bit-vectors + eager bitblasting + incremental (#8658)
Fixes #8654.
Andrew Reynolds [Mon, 25 Apr 2022 18:21:57 +0000 (13:21 -0500)]
Make BVInstantiatorUtil an EnvObj (#8633)
Eliminates 5 of the remaining 8 static calls to Rewriter::rewrite.
Abdalrhman Mohamed [Mon, 25 Apr 2022 16:08:23 +0000 (11:08 -0500)]
Add custom targets for specific testers. (#8653)
This adds custom targets to run a specific tester (e.g., `regress-lfsc`).
Signed-off-by: Abdalrhman M Mohamed <abdalrhman-mohamed@uiowa.edu>
Andrew Reynolds [Sat, 23 Apr 2022 15:48:28 +0000 (10:48 -0500)]
Minor cleanup of NodeManager (#8650)
Andrew Reynolds [Fri, 22 Apr 2022 20:03:33 +0000 (15:03 -0500)]
Add `deep-restart` option (#8644)
Adds the ability to have the SmtSolver automatically deep restart after a criteria is met (we have learned new top-level literals, and a threshold of time since the last learned literal has passed). This can be used for non-incremental satisfiability queries only.
By default, --deep-restart=input kicks in on 155 of our regressions, this adds 4 delta-debugged regressions that exercise the feature.
Abdalrhman Mohamed [Thu, 21 Apr 2022 06:45:04 +0000 (01:45 -0500)]
Add tester for LFSC printer. (#8606)
This adds an option to check the LFSC proofs generated by `cvc5` for unsat benchmarks. This does not enable the tester in CI as it fails for many benchmarks.
Andres Noetzli [Thu, 21 Apr 2022 05:28:52 +0000 (22:28 -0700)]
[Seq] Remove `SkolemCache::mkSkolemSeqNth()` (#8643)
This removes the `SkolemCache::mkSkolemSeqNth()` method. Instead of
handling the out-of-bounds case with a UF, we just use `seq.nth` in its
original form for the out-of-bounds case (and rely on the fact that the
equality engine is configured to perform congruence closure on that
kind). This is part of the changes for the paper on sequences.
mudathirmahgoub [Thu, 21 Apr 2022 04:46:43 +0000 (23:46 -0500)]
Add bag.partition evaluation (#8637)
Andrew Reynolds [Wed, 20 Apr 2022 22:59:35 +0000 (17:59 -0500)]
Add utilities in preparation for deep restarts (#8642)
Andres Noetzli [Wed, 20 Apr 2022 21:44:01 +0000 (14:44 -0700)]
Remove unused `SEQ_NTH_TOTAL` kind (#8048)
Originally, the idea was to expand the definition of `SEQ_NTH` to use
`SEQ_NTH_TOTAL` (i.e., a total version of that operator), but we have
since then decided to just use `SEQ_NTH`.
Andres Noetzli [Wed, 20 Apr 2022 21:00:31 +0000 (14:00 -0700)]
Improve handling of `(push)` and `(pop)` (#8641)
This extends PushCommand and PopCommand to take a number of levels
to push/pop. We have support for pushing an arbitrary number of levels
at the API level, so this simplifies the parser code and makes dumping
more precise (previously, we were dumping (push 2) as two (push 1)
commands).