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fixed-size min-heap for tracking top-k literals (#7752)

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* very basic setup

* ensure solve_eqs is fully disabled when smt.solve_eqs=false, #7743

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* respect smt configuration parameter in elim_unconstrained simplifier

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* indentation

* add bash files for test runs

* add option to selectively disable variable solving for only ground expressions

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* remove verbose output

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fix #7745

axioms for len(substr(...)) escaped due to nested rewriting

* ensure atomic constraints are processed by arithmetic solver

* #7739 optimization

add simplification rule for at(x, offset) = ""

Introducing j just postpones some rewrites that prevent useful simplifications. Z3 already uses common sub-expressions.
The example highlights some opportunities for simplification, noteworthy at(..) = "".
The example is solved in both versions after adding this simplification.

* fix unsound len(substr) axiom

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* FreshConst is_sort (#7748)

* #7750

add pre-processing simplification

* Add parameter validation for selected API functions

* updates to ac-plugin

fix incrementality bugs by allowing destructive updates during saturation at the cost of redoing saturation after a pop.

* enable passive, add check for bloom up-to-date

* add top-k fixed-sized min-heap priority queue for top scoring literals

---------

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
Co-authored-by: Nikolaj Bjorner <nbjorner@microsoft.com>
Co-authored-by: humnrdble <83878671+humnrdble@users.noreply.github.com>
This commit is contained in:
Ilana Shapiro 2025-07-28 19:54:01 -07:00 • committed by GitHub
parent a9b4e35938
commit 435ea6ea99
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24 changed files with 762 additions and 303 deletions
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11
src/api/api_context.h
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@ -286,10 +286,13 @@ namespace api {
inline api::context * mk_c(Z3_context c) { return reinterpret_cast<api::context*>(c); }
#define RESET_ERROR_CODE() { mk_c(c)->reset_error_code(); }
#define SET_ERROR_CODE(ERR, MSG) { mk_c(c)->set_error_code(ERR, MSG); }
#define CHECK_NON_NULL(_p_,_ret_) { if (_p_ == 0) { SET_ERROR_CODE(Z3_INVALID_ARG, "ast is null"); return _ret_; } }
#define CHECK_VALID_AST(_a_, _ret_) { if (_a_ == 0 || !CHECK_REF_COUNT(_a_)) { SET_ERROR_CODE(Z3_INVALID_ARG, "not a valid ast"); return _ret_; } }
#define CHECK_NON_NULL(_p_,_ret_) { if (_p_ == nullptr) { SET_ERROR_CODE(Z3_INVALID_ARG, "ast is null"); return _ret_; } }
#define CHECK_VALID_AST(_a_, _ret_) { if (_a_ == nullptr || !CHECK_REF_COUNT(_a_)) { SET_ERROR_CODE(Z3_INVALID_ARG, "not a valid ast"); return _ret_; } }
inline bool is_expr(Z3_ast a) { return is_expr(to_ast(a)); }
#define CHECK_IS_EXPR(_p_, _ret_) { if (_p_ == 0 || !is_expr(_p_)) { SET_ERROR_CODE(Z3_INVALID_ARG, "ast is not an expression"); return _ret_; } }
#define CHECK_IS_EXPR(_p_, _ret_) { if (_p_ == nullptr || !is_expr(_p_)) { SET_ERROR_CODE(Z3_INVALID_ARG, "ast is not an expression"); return _ret_; } }
#define CHECK_IS_SORT(_p_, _ret_) { if (_p_ == nullptr || !is_sort(_p_)) { SET_ERROR_CODE(Z3_INVALID_ARG, "ast is not a sort"); return _ret_; } }
#define CHECK_SORTS(_n_, _ps_, _ret_) { for (unsigned i = 0; i < _n_; ++i) if (!is_sort(_ps_[i])) { SET_ERROR_CODE(Z3_INVALID_ARG, "ast is not a sort"); return _ret_; } }
inline bool is_bool_expr(Z3_context c, Z3_ast a) { return is_expr(a) && mk_c(c)->m().is_bool(to_expr(a)); }
#define CHECK_FORMULA(_a_, _ret_) { if (_a_ == 0 || !CHECK_REF_COUNT(_a_) || !is_bool_expr(c, _a_)) { SET_ERROR_CODE(Z3_INVALID_ARG, nullptr); return _ret_; } }
#define CHECK_FORMULA(_a_, _ret_) { if (_a_ == nullptr || !CHECK_REF_COUNT(_a_) || !is_bool_expr(c, _a_)) { SET_ERROR_CODE(Z3_INVALID_ARG, nullptr); return _ret_; } }
inline void check_sorts(Z3_context c, ast * n) { mk_c(c)->check_sorts(n); }