| Age | Commit message (Collapse) | Author |
|---|
|
|
|
|
|
|
|
This adds support for model cores, fixes #1233.
It includes some minor cleanup and additions to utility functions.
|
|
|
|
|
|
C++11 supports explicitly deleting functions that should not be used
(explictly or implictly), e.g. copy or assignment constructors. We were
previously using the CVC4_UNDEFINED macro that used a compiler-specific
attribute. The C++11 feature should be more portable.
|
|
|
|
This includes:
- A missing case in the smt2 printer,
- A bug in an inference of int2bv applied to bv2nat where the types are different.
|
|
|
|
|
|
This commit adds support for string concatenation, charat, and length
operators in the CVC printer and support for re.nostr, re.allchar, and
insert into a set in the SMT2 printer.
|
|
|
|
In the CVC printer, function definitions without arguments are printed
like constants but when actually using that function we were printing in
the form of `x()`.
For example:
```
(set-logic QF_BV)
(define-fun x1480 () Bool true)
(define-fun x2859 () Bool true)
(define-fun x2387 () Bool x2859)
(check-sat)
```
Was dumped as:
```
OPTION "incremental" false;
OPTION "logic" "QF_BV";
x1480 : BOOLEAN = TRUE;
x2859 : BOOLEAN = TRUE;
x2387 : BOOLEAN = x2859();
```
This commit removes these parentheses when prefix functions with zero arguments
are printed, so the example above becomes:
```
OPTION "incremental" false;
OPTION "logic" "QF_BV";
x1480 : BOOLEAN = TRUE;
x2859 : BOOLEAN = TRUE;
x2387 : BOOLEAN = x2859();
```
|
|
This eliminates some hacks for dealing with Int/Real.
- Eliminates the use of "to_real" to cast decimals like "2.0" that happen to be Int. We now replace these by (/ 2 1) instead of (to_real 2), which has the advantage of being smt-lib compliant for all theories, including QF_LRA.
- Eliminates the use of a hack to use "type ascriptions" when returning values from a get-value command. Instead, we use division with 1 when necessary. This affects the output of a few regressions, but we remain smt-lib compliant.
- Addresses a bug with printing arbitrary type ascriptions for smt2 terms. This partially addresses #1852.
- Updates our printing of negative rationals to be (/ (- n) m) instead of (- (/ n m)), which is consistent with the smt lib standard for real values (http://smtlib.cs.uiowa.edu/theories-Reals.shtml).
|
|
* Add some symfpu accessor functions to reduce the size of the literal 'back-end'.
* Enable the bit-vector theory when setting the logic, not in expandDefinition.
This is needed because it is possible to add variables of float or rounding mode
sort but not use any theory specific functions or predicates and thus not enable
the bit-vector theory.
* Use symfpu to implement the literal floating-point objects.
* Add kinds for bit-blasted components.
* Print the new kinds.
* Typing rules for the new kinds.
* Constant folding for the component kinds.
* Add support for components to the theory solver.
* Add explicit equivalences between classification functions and equalities.
* Use symfpu to do symbolic conversions of floating-point operations.
* Implement conversions via (over-)approximation and refinement.
* Correct a copy and paste error in the generation of uninterpretted functions for conversions.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
This adds support for check-sat-assuming. It further adds support for SmtEngine::query() over a
vector of Expressions, e.g., smtEngine->query({a, b}); checks the validity (of the current input
formula) under assumption (not (or a b)).
|
|
|
|
|
|
|
|
|
|
This is another step towards addressing #1304 and #1344. This pull request:
- Refactors SygusGrammarNorm
- Makes SyGusGrammarNorm a default component in the construction of grammar. The linearization of grammars however only occurs if the option --sygus-grammar-norm is used.
- Performs a "chain transformation" in the application of the PLUS operator in integer grammars
- Removes redundant expansions of definitions from TermDbSygus
- Adds a default empty print callback to SygusEmptyPrintCallback
This lays the basis for more general linearizations.
|
|
|
|
lambdas (#1403)
This partially solves issue #1344. Definitions are expanded when the grammar normalizer is called. When this becomes default then the code that expands definitions elsewhere will be removed.
The PR also contains minor changes to the PrintCallback and SygusGrammarNormalize module.
|
|
|
|
* Initial infrastructure for sygus printing.
* Minor
* Minor improvements
* Format
* Minor
* Empty constructor printer.
* Format
* Minor
* Format
* Address.
|
|
|
|
* Minor preparation for final higher-order merge.
* Format
|
|
* Refactor theory model, working on making RepSet references const.
* Encapsulation of members of rep set.
* More documentation on rep set.
* Swap names
* Reference issues.
* Minor
* Minor
* New clang format.
|
|
* Support unsat cores for TPTP.
* Fix assertion
|
|
* Argument for strings class to specify whether to process escape sequences.
* Change default value on string constructor.
* Make CVC4::String::toString symmetric to the constructor for CVC4::String, document.
* Clang format.
|
|
* Move unsat core names to SmtEnginePrivate. Adds a SetExpressionNameCommand to do this. Removes the names field from GetUnsatCoreCommand.
* Comment
* Pass expression names by reference.
* Update throw specifiers.
* Minor
* Switch expression names to CDMap, simplify interface for printing unsat core names.
* Revert throw specifier change.
* Minor simplifcations
|
|
* Move equality query to own file, move equality inference to quantifiers engine.
* Move quantifiers attributes out of TermDb and into QuantAttribute.
* Move term database sygus to quantifiers engine, move some attributes to quantifiers attributes header.
* Split term database into term util.
* Partial fix for #1205 that eliminates need for dependency in node.cpp.
* Add more references to github issues.
|
|
- Add new kinds for partially defined functions
- Print the new kinds
- Type rules for the new total kinds
- Constant folding and rewrites for the new total kinds
|
|
Commit 54d24c786d6a843cc72dfb5e377603349ea5e420 was
changing CVC4 to handle certain non-fatal errors
(such as calling get-unsat-core without a proceding
unsat check-sat command) without terminating the
solver. In the case of get-unsat-cores, the changes
lead to the solver crashing because it was trying to
print an unsat core initialized with the default
constructor, so the member variable d_smt was NULL,
which lead to a dereference of a null pointer.
One of the issues of the way non-fatal errors were
handled was that the error reporting was done in the
invoke() method of the command instead of the
printResult() method, which lead to the error
described above and other issues such as a call to
get-value printing a value after reporting an error.
This commit aims to improve the design by adding a
RecoverableModalException for errors that the solver
can recover from and CommandRecoverableFailure to
communicate that a command failed in a way that does
not prohibit the solver from continuing to execute.
The exception RecoverableModalException is thrown by
the SMTEngine and the commands catch it and turn it
into a CommandRecoverableFailure. The commit changes
all error conditions from the commit above and adds a
regression test for them.
|
|
- Update the parser to the new constant construction
- Fix the problem with parsing +/-zero and remove some dead code
- Extend the interface for literal floating-point values.
- Add a constructor so that a parameteric operator structure can be created from a type
- Add constructors so parametric operator constants can be easily converted
- Update SMT2 printing so that it uses the informative output
|
|
* Remove support for conversions between uint32/uint16 and string.
* Temporarily disable regression.
|
