* restore more aggressive pruning in search tree
* restore where we close children to be correct
* add core strengthening check
* fix recursion bug
* less strict core propagation
* old search tree version
* restore search tree patch
* remove flag
* debugging inconsistent end state with search, some changes need to be made in search tree, only backtrack should be closing nodes, I think the bug is when we do find_highest_attach for nonchronological backjumping, you might get to a point where the sibling is closed, so then we need to resolve further up the tree
* clean up code, fix deadlock
* delete test files
* clean up
---------
Co-authored-by: Ilana Shapiro <ilanashapiro@Mac.localdomain>
Co-authored-by: Ilana Shapiro <ilanashapiro@Ilanas-MacBook-Pro.local>
Co-authored-by: Ilana Shapiro <ilanashapiro@Ilanas-MBP.lan1>
* somewhaat failed attempt at declaring subterm predicate
I can't really figure out how to link the smt parser to the rest of the
machinenery, so I will stop here and try from the other side. I'll start
implmenting the logic and see if it brings me back to the parser.
* initial logic implmentation
Very primitive, but I don't like have that much work uncommitted.
* parser implementation
* more theory
* Working base
* subterm reflexivity
* a few optimization
Skip adding obvious equalities or disequality
* removed some optimisations
* better handling of backtracking
* stupid segfault
Add m_subterm to the trail
* Update src/smt/theory_datatype.h
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Update src/ast/rewriter/datatype_rewriter.cpp
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Update src/smt/theory_datatype.cpp
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Update src/smt/theory_datatype.cpp
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Update src/smt/theory_datatype.cpp
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* review
* forgot to update `iterate_subterm`'s signature
* fix iterator segfault
* Remove duplicate include statement
Removed duplicate include of 'theory_datatype.h'.
* Replace 'optional' with 'std::option' in datatype_decl_plugin.h
* Add is_subterm_predicate matcher to datatype_decl_plugin
* Change std::option to std::optional for m_subterm
* Update pdecl.h
* Change has_subterm to use has_value method
* Update pdecl.cpp
---------
Co-authored-by: Nikolaj Bjorner <nbjorner@microsoft.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* add user params
* inprocessing flag
* playing around with clause sharing with some arith constraints (complicated version commented out)
* collect shared clauses inside share units after pop to base level (might help NIA)
* dont collect clauses twice
* dont pop to base level when sharing units, manual filter
* clean up code
---------
Co-authored-by: Ilana Shapiro <ilanashapiro@Mac.localdomain>
* Add cube tree optimization about resolving cores recursively up the path, to prune. Also integrate asms into the tree so they're not tracked separately (#7960)
* draft attempt at optimizing cube tree with resolvents. have not tested/ran yet
* adding comments
* fix bug about needing to bubble resolvent upwards to highest ancestor
* fix bug where we need to cover the whole resolvent in the path when bubbling up
* clean up comments
* close entire tree when sibling resolvent is empty
* integrate asms directly into cube tree, remove separate tracking
* try to fix bug about redundant resolutions, merging close and try_resolve_upwards into once function
* separate the logic again to avoid mutual recursion
* Refactor search tree closure and resolution logic
Refactor close_with_core to simplify logic and remove unnecessary parameters. Update sibling resolvent computation and try_resolve_upwards for clarity.
* apply formatting
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
* Refactor close_with_core to use current node in lambda
* Fix formatting issues in search_tree.h
* fix build issues
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
* Update smt_parallel.cpp
* Change loop variable type in unsat core processing
* Change method to retrieve unsat core from root
---------
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
Co-authored-by: Nikolaj Bjorner <nbjorner@microsoft.com>
Issue #7502 shows that running nlsat eagerly during final check can block quantifier instantiation.
To give space for quantifier instances we introduce two levels for final check such that nlsat is only applied in the second and final level.
* add examples
* add lattice refutation solver class
* store partial order in vector
* capture partial order relations
* begin with the incremental reachability data structure
* implement data structure for incremental reachability
* fix bug in subset propagation
* add trace
* only propagate if new value was added
* begin implementing bitvector variant of reachability matrix
* fix path creation and cycle detection
* fix bug
* make conflict triggering more conservative
* check if theory vars are in bounds
* add cycle detection (including equality propagation)
* add examples
* remove example
* remove traces
* remove sln file
