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Merge branch 'Z3Prover:master' into param-tuning

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Ilana Shapiro 2025-10-19 22:25:13 -07:00 • committed by GitHub
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10
.clang-format
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@ -9,6 +9,7 @@ IndentWidth: 4
TabWidth: 4
UseTab: Never
# Column width
ColumnLimit: 120
@ -34,6 +35,8 @@ BraceWrapping:
AfterControlStatement: false
AfterNamespace: false
AfterStruct: false
BeforeElse : true
AfterCaseLabel: false
# Spacing
SpaceAfterCStyleCast: false
SpaceAfterLogicalNot: false
@ -42,7 +45,6 @@ SpaceInEmptyParentheses: false
SpacesInCStyleCastParentheses: false
SpacesInParentheses: false
SpacesInSquareBrackets: false
IndentCaseLabels: false
# Alignment
AlignConsecutiveAssignments: false
@ -56,6 +58,7 @@ BinPackArguments: true
BinPackParameters: true
BreakBeforeBinaryOperators: None
BreakBeforeTernaryOperators: true
# BreakBeforeElse: true
# Includes
SortIncludes: false # Z3 has specific include ordering conventions
@ -63,6 +66,11 @@ SortIncludes: false # Z3 has specific include ordering conventions
# Namespaces
NamespaceIndentation: All
# Switch statements
IndentCaseLabels: false
AllowShortCaseLabelsOnASingleLine: true
IndentCaseBlocks: false
# Comments and documentation
ReflowComments: true
SpacesBeforeTrailingComments: 2

37
.github/workflows/codeql-analysis.yml vendored Normal file
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@ -0,0 +1,37 @@
name: "CodeQL"
on:
workflow_dispatch:
jobs:
analyze:
name: Analyze
runs-on: ubuntu-latest
permissions:
actions: read
contents: read
security-events: write
strategy:
fail-fast: false
matrix:
language: [cpp]
steps:
- name: Checkout repository
uses: actions/checkout@v5
- name: Initialize CodeQL
uses: github/codeql-action/init@v4
with:
languages: ${{ matrix.language }}
- name: Autobuild
uses: github/codeql-action/autobuild@v4
- name: Run CodeQL Query
uses: github/codeql-action/analyze@v4
with:
category: 'custom'
queries: ./codeql/custom-queries

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a-tst.gcno
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87
codeql/custom_queries/FindUnderspecified.ql Normal file
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@ -0,0 +1,87 @@
/**
* Finds function calls with arguments that have unspecified evaluation order.
*
* @name Unspecified argument evaluation order
* @kind problem
* @problem.severity warning
* @id cpp/z3/unspecevalorder
*/
import cpp
predicate isPureFunc(Function f) {
f.getName() = "m" or
not exists(Assignment a | a.getEnclosingFunction() = f) and
forall(FunctionCall g | g.getEnclosingFunction() = f | isPureFunc(g.getTarget()))
}
predicate sideEffectfulArgument(Expr a) {
exists(Function f | f = a.(FunctionCall).getTarget() |
not f instanceof ConstMemberFunction and
not isPureFunc(f)
)
or
exists(ArrayExpr b | b = a.(ArrayExpr) |
sideEffectfulArgument(b.getArrayBase()) or sideEffectfulArgument(b.getArrayOffset())
)
or
exists(Assignment b | b = a)
or
exists(BinaryOperation b | b = a | sideEffectfulArgument(b.getAnOperand()))
or
exists(UnaryOperation b | b = a | sideEffectfulArgument(b.getOperand()))
}
from FunctionCall f, Expr a, int i, Expr b, int j where
i < j and
f.getTarget().getName() != "operator&&" and
f.getTarget().getName() != "operator||" and
a = f.getArgument(i) and
b = f.getArgument(j) and
sideEffectfulArgument(a) and
sideEffectfulArgument(b)
select f, "potentially unspecified evaluation order of function arguments: $@ and $@", a,
i.toString(), b, j.toString()

90
examples/c++/example.cpp
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@ -1006,6 +1006,95 @@ void datatype_example() {
}
void polymorphic_datatype_example() {
std::cout << "polymorphic datatype example\n";
context ctx;
// Create type variables alpha and beta for polymorphic datatype using C API
Z3_symbol alpha_sym = Z3_mk_string_symbol(ctx, "alpha");
Z3_symbol beta_sym = Z3_mk_string_symbol(ctx, "beta");
sort alpha(ctx, Z3_mk_type_variable(ctx, alpha_sym));
sort beta(ctx, Z3_mk_type_variable(ctx, beta_sym));
std::cout << "Type variables: " << alpha << ", " << beta << "\n";
// Define parametric Pair datatype with constructor mk-pair(first: alpha, second: beta)
symbol pair_name = ctx.str_symbol("Pair");
symbol mk_pair_name = ctx.str_symbol("mk-pair");
symbol is_pair_name = ctx.str_symbol("is-pair");
symbol first_name = ctx.str_symbol("first");
symbol second_name = ctx.str_symbol("second");
symbol field_names[2] = {first_name, second_name};
sort field_sorts[2] = {alpha, beta}; // Use type variables
constructors cs(ctx);
cs.add(mk_pair_name, is_pair_name, 2, field_names, field_sorts);
sort pair = ctx.datatype(pair_name, cs);
std::cout << "Created parametric datatype: " << pair << "\n";
// Instantiate Pair with concrete types: (Pair Int Real)
sort_vector params_int_real(ctx);
params_int_real.push_back(ctx.int_sort());
params_int_real.push_back(ctx.real_sort());
sort pair_int_real = ctx.datatype_sort(pair_name, params_int_real);
std::cout << "Instantiated with Int and Real: " << pair_int_real << "\n";
// Instantiate Pair with concrete types: (Pair Real Int)
sort_vector params_real_int(ctx);
params_real_int.push_back(ctx.real_sort());
params_real_int.push_back(ctx.int_sort());
sort pair_real_int = ctx.datatype_sort(pair_name, params_real_int);
std::cout << "Instantiated with Real and Int: " << pair_real_int << "\n";
// Get constructors and accessors for (Pair Int Real) using C API
func_decl mk_pair_ir(ctx, Z3_get_datatype_sort_constructor(ctx, pair_int_real, 0));
func_decl first_ir(ctx, Z3_get_datatype_sort_constructor_accessor(ctx, pair_int_real, 0, 0));
func_decl second_ir(ctx, Z3_get_datatype_sort_constructor_accessor(ctx, pair_int_real, 0, 1));
std::cout << "Constructors and accessors for (Pair Int Real):\n";
std::cout << " Constructor: " << mk_pair_ir << "\n";
std::cout << " first accessor: " << first_ir << "\n";
std::cout << " second accessor: " << second_ir << "\n";
// Get constructors and accessors for (Pair Real Int) using C API
func_decl mk_pair_ri(ctx, Z3_get_datatype_sort_constructor(ctx, pair_real_int, 0));
func_decl first_ri(ctx, Z3_get_datatype_sort_constructor_accessor(ctx, pair_real_int, 0, 0));
func_decl second_ri(ctx, Z3_get_datatype_sort_constructor_accessor(ctx, pair_real_int, 0, 1));
std::cout << "Constructors and accessors for (Pair Real Int):\n";
std::cout << " Constructor: " << mk_pair_ri << "\n";
std::cout << " first accessor: " << first_ri << "\n";
std::cout << " second accessor: " << second_ri << "\n";
// Create constants of these types
expr p1 = ctx.constant("p1", pair_int_real);
expr p2 = ctx.constant("p2", pair_real_int);
std::cout << "Created constants: " << p1 << " : " << p1.get_sort() << "\n";
std::cout << " " << p2 << " : " << p2.get_sort() << "\n";
// Create expressions using accessors
expr first_p1 = first_ir(p1); // first(p1) has type Int
expr second_p2 = second_ri(p2); // second(p2) has type Int
std::cout << "first(p1) = " << first_p1 << " : " << first_p1.get_sort() << "\n";
std::cout << "second(p2) = " << second_p2 << " : " << second_p2.get_sort() << "\n";
// Create equality term: (= (first p1) (second p2))
expr eq = first_p1 == second_p2;
std::cout << "Equality term: " << eq << "\n";
// Verify both sides have the same type (Int)
assert(first_p1.get_sort().id() == ctx.int_sort().id());
assert(second_p2.get_sort().id() == ctx.int_sort().id());
std::cout << "Successfully created and verified polymorphic datatypes!\n";
}
void expr_vector_example() {
std::cout << "expr_vector example\n";
context c;
@ -1394,6 +1483,7 @@ int main() {
enum_sort_example(); std::cout << "\n";
tuple_example(); std::cout << "\n";
datatype_example(); std::cout << "\n";
polymorphic_datatype_example(); std::cout << "\n";
expr_vector_example(); std::cout << "\n";
exists_expr_vector_example(); std::cout << "\n";
substitute_example(); std::cout << "\n";

74
src/api/api_datatype.cpp
View file

@ -306,12 +306,24 @@ extern "C" {
Z3_CATCH;
}
static datatype_decl* mk_datatype_decl(Z3_context c,
Z3_symbol name,
unsigned num_constructors,
Z3_constructor constructors[]) {
static datatype_decl* api_datatype_decl(Z3_context c,
Z3_symbol name,
unsigned num_parameters,
Z3_sort const parameters[],
unsigned num_constructors,
Z3_constructor constructors[]) {
datatype_util& dt_util = mk_c(c)->dtutil();
ast_manager& m = mk_c(c)->m();
sort_ref_vector params(m);
// A correct use of the API is to always provide parameters explicitly.
// implicit parameters through polymorphic type variables does not work
// because the order of polymorphic variables in the parameters is ambiguous.
if (num_parameters > 0 && parameters)
for (unsigned i = 0; i < num_parameters; ++i)
params.push_back(to_sort(parameters[i]));
ptr_vector<constructor_decl> constrs;
for (unsigned i = 0; i < num_constructors; ++i) {
constructor* cn = reinterpret_cast<constructor*>(constructors[i]);
@ -326,7 +338,7 @@ extern "C" {
}
constrs.push_back(mk_constructor_decl(cn->m_name, cn->m_tester, acc.size(), acc.data()));
}
return mk_datatype_decl(dt_util, to_symbol(name), 0, nullptr, num_constructors, constrs.data());
return mk_datatype_decl(dt_util, to_symbol(name), params.size(), params.data(), num_constructors, constrs.data());
}
Z3_sort Z3_API Z3_mk_datatype(Z3_context c,
@ -341,7 +353,7 @@ extern "C" {
sort_ref_vector sorts(m);
{
datatype_decl * data = mk_datatype_decl(c, name, num_constructors, constructors);
datatype_decl * data = api_datatype_decl(c, name, 0, nullptr, num_constructors, constructors);
bool is_ok = mk_c(c)->get_dt_plugin()->mk_datatypes(1, &data, 0, nullptr, sorts);
del_datatype_decl(data);
@ -363,6 +375,42 @@ extern "C" {
Z3_CATCH_RETURN(nullptr);
}
Z3_sort Z3_API Z3_mk_polymorphic_datatype(Z3_context c,
Z3_symbol name,
unsigned num_parameters,
Z3_sort parameters[],
unsigned num_constructors,
Z3_constructor constructors[]) {
Z3_TRY;
LOG_Z3_mk_polymorphic_datatype(c, name, num_parameters, parameters, num_constructors, constructors);
RESET_ERROR_CODE();
ast_manager& m = mk_c(c)->m();
datatype_util data_util(m);
sort_ref_vector sorts(m);
{
datatype_decl * data = api_datatype_decl(c, name, num_parameters, parameters, num_constructors, constructors);
bool is_ok = mk_c(c)->get_dt_plugin()->mk_datatypes(1, &data, 0, nullptr, sorts);
del_datatype_decl(data);
if (!is_ok) {
SET_ERROR_CODE(Z3_INVALID_ARG, nullptr);
RETURN_Z3(nullptr);
}
}
sort * s = sorts.get(0);
mk_c(c)->save_ast_trail(s);
ptr_vector<func_decl> const& cnstrs = *data_util.get_datatype_constructors(s);
for (unsigned i = 0; i < num_constructors; ++i) {
constructor* cn = reinterpret_cast<constructor*>(constructors[i]);
cn->m_constructor = cnstrs[i];
}
RETURN_Z3_mk_polymorphic_datatype(of_sort(s));
Z3_CATCH_RETURN(nullptr);
}
typedef ptr_vector<constructor> constructor_list;
Z3_constructor_list Z3_API Z3_mk_constructor_list(Z3_context c,
@ -387,14 +435,18 @@ extern "C" {
Z3_CATCH;
}
Z3_sort Z3_API Z3_mk_datatype_sort(Z3_context c, Z3_symbol name) {
Z3_sort Z3_API Z3_mk_datatype_sort(Z3_context c, Z3_symbol name, unsigned num_params, Z3_sort const params[]) {
Z3_TRY;
LOG_Z3_mk_datatype_sort(c, name);
LOG_Z3_mk_datatype_sort(c, name, num_params, params);
RESET_ERROR_CODE();
ast_manager& m = mk_c(c)->m();
datatype_util adt_util(m);
parameter p(to_symbol(name));
sort * s = m.mk_sort(adt_util.get_family_id(), DATATYPE_SORT, 1, &p);
vector<parameter> ps;
ps.push_back(parameter(to_symbol(name)));
for (unsigned i = 0; i < num_params; ++i) {
ps.push_back(parameter(to_sort(params[i])));
}
sort * s = m.mk_sort(adt_util.get_family_id(), DATATYPE_SORT, ps.size(), ps.data());
mk_c(c)->save_ast_trail(s);
RETURN_Z3(of_sort(s));
Z3_CATCH_RETURN(nullptr);
@ -416,7 +468,7 @@ extern "C" {
ptr_vector<datatype_decl> datas;
for (unsigned i = 0; i < num_sorts; ++i) {
constructor_list* cl = reinterpret_cast<constructor_list*>(constructor_lists[i]);
datas.push_back(mk_datatype_decl(c, sort_names[i], cl->size(), reinterpret_cast<Z3_constructor*>(cl->data())));
datas.push_back(api_datatype_decl(c, sort_names[i], 0, nullptr, cl->size(), reinterpret_cast<Z3_constructor*>(cl->data())));
}
sort_ref_vector _sorts(m);
bool ok = mk_c(c)->get_dt_plugin()->mk_datatypes(datas.size(), datas.data(), 0, nullptr, _sorts);

25
src/api/c++/z3++.h
View file

@ -343,6 +343,14 @@ namespace z3 {
*/
sort datatype_sort(symbol const& name);
/**
\brief a reference to a recursively defined parametric datatype.
Expect that it gets defined as a \ref datatype.
\param name name of the datatype
\param params sort parameters
*/
sort datatype_sort(symbol const& name, sort_vector const& params);
/**
\brief create an uninterpreted sort with the name given by the string or symbol.
@ -2173,7 +2181,15 @@ namespace z3 {
inline expr ugt(expr const & a, expr const & b) { return to_expr(a.ctx(), Z3_mk_bvugt(a.ctx(), a, b)); }
inline expr ugt(expr const & a, int b) { return ugt(a, a.ctx().num_val(b, a.get_sort())); }
inline expr ugt(int a, expr const & b) { return ugt(b.ctx().num_val(a, b.get_sort()), b); }
/**
\brief signed division operator for bitvectors.
*/
inline expr sdiv(expr const & a, expr const & b) { return to_expr(a.ctx(), Z3_mk_bvsdiv(a.ctx(), a, b)); }
inline expr sdiv(expr const & a, int b) { return sdiv(a, a.ctx().num_val(b, a.get_sort())); }
inline expr sdiv(int a, expr const & b) { return sdiv(b.ctx().num_val(a, b.get_sort()), b); }
/**
\brief unsigned division operator for bitvectors.
*/
inline expr udiv(expr const & a, expr const & b) { return to_expr(a.ctx(), Z3_mk_bvudiv(a.ctx(), a, b)); }
@ -3617,7 +3633,14 @@ namespace z3 {
inline sort context::datatype_sort(symbol const& name) {
Z3_sort s = Z3_mk_datatype_sort(*this, name);
Z3_sort s = Z3_mk_datatype_sort(*this, name, 0, nullptr);
check_error();
return sort(*this, s);
}
inline sort context::datatype_sort(symbol const& name, sort_vector const& params) {
array<Z3_sort> _params(params);
Z3_sort s = Z3_mk_datatype_sort(*this, name, _params.size(), _params.ptr());
check_error();
return sort(*this, s);
}

30
src/api/dotnet/Context.cs
View file

@ -474,6 +474,36 @@ namespace Microsoft.Z3
return new DatatypeSort(this, symbol, constructors);
}
/// <summary>
/// Create a forward reference to a datatype sort.
/// This is useful for creating recursive datatypes or parametric datatypes.
/// </summary>
/// <param name="name">name of the datatype sort</param>
/// <param name="parameters">optional array of sort parameters for parametric datatypes</param>
public DatatypeSort MkDatatypeSortRef(Symbol name, Sort[] parameters = null)
{
Debug.Assert(name != null);
CheckContextMatch(name);
if (parameters != null)
CheckContextMatch<Sort>(parameters);
var numParams = (parameters == null) ? 0 : (uint)parameters.Length;
var paramsNative = (parameters == null) ? null : AST.ArrayToNative(parameters);
return new DatatypeSort(this, Native.Z3_mk_datatype_sort(nCtx, name.NativeObject, numParams, paramsNative));
}
/// <summary>
/// Create a forward reference to a datatype sort.
/// This is useful for creating recursive datatypes or parametric datatypes.
/// </summary>
/// <param name="name">name of the datatype sort</param>
/// <param name="parameters">optional array of sort parameters for parametric datatypes</param>
public DatatypeSort MkDatatypeSortRef(string name, Sort[] parameters = null)
{
using var symbol = MkSymbol(name);
return MkDatatypeSortRef(symbol, parameters);
}
/// <summary>
/// Create mutually recursive datatypes.
/// </summary>

8
src/api/java/AST.java
View file

@ -208,7 +208,13 @@ public class AST extends Z3Object implements Comparable<AST>
case Z3_FUNC_DECL_AST:
return new FuncDecl<>(ctx, obj);
case Z3_QUANTIFIER_AST:
return new Quantifier(ctx, obj);
// a quantifier AST is a lambda iff it is neither a forall nor an exists.
boolean isLambda = !Native.isQuantifierExists(ctx.nCtx(), obj) && !Native.isQuantifierForall(ctx.nCtx(), obj);
if (isLambda) {
return new Lambda(ctx, obj);
} else {
return new Quantifier(ctx, obj);
}
case Z3_SORT_AST:
return Sort.create(ctx, obj);
case Z3_APP_AST:

48
src/api/java/Context.java
View file

@ -388,6 +388,54 @@ public class Context implements AutoCloseable {
return new DatatypeSort<>(this, mkSymbol(name), constructors);
}
/**
* Create a forward reference to a datatype sort.
* This is useful for creating recursive datatypes or parametric datatypes.
* @param name name of the datatype sort
* @param params optional array of sort parameters for parametric datatypes
**/
public <R> DatatypeSort<R> mkDatatypeSortRef(Symbol name, Sort[] params)
{
checkContextMatch(name);
if (params != null)
checkContextMatch(params);
int numParams = (params == null) ? 0 : params.length;
long[] paramsNative = (params == null) ? new long[0] : AST.arrayToNative(params);
return new DatatypeSort<>(this, Native.mkDatatypeSort(nCtx(), name.getNativeObject(), numParams, paramsNative));
}
/**
* Create a forward reference to a datatype sort (non-parametric).
* This is useful for creating recursive datatypes.
* @param name name of the datatype sort
**/
public <R> DatatypeSort<R> mkDatatypeSortRef(Symbol name)
{
return mkDatatypeSortRef(name, null);
}
/**
* Create a forward reference to a datatype sort.
* This is useful for creating recursive datatypes or parametric datatypes.
* @param name name of the datatype sort
* @param params optional array of sort parameters for parametric datatypes
**/
public <R> DatatypeSort<R> mkDatatypeSortRef(String name, Sort[] params)
{
return mkDatatypeSortRef(mkSymbol(name), params);
}
/**
* Create a forward reference to a datatype sort (non-parametric).
* This is useful for creating recursive datatypes.
* @param name name of the datatype sort
**/
public <R> DatatypeSort<R> mkDatatypeSortRef(String name)
{
return mkDatatypeSortRef(name, null);
}
/**
* Create mutually recursive datatypes.
* @param names names of datatype sorts

11
src/api/java/Expr.java
View file

@ -2148,8 +2148,15 @@ public class Expr<R extends Sort> extends AST
static Expr<?> create(Context ctx, long obj)
{
Z3_ast_kind k = Z3_ast_kind.fromInt(Native.getAstKind(ctx.nCtx(), obj));
if (k == Z3_ast_kind.Z3_QUANTIFIER_AST)
return new Quantifier(ctx, obj);
if (k == Z3_ast_kind.Z3_QUANTIFIER_AST) {
// a quantifier AST is a lambda iff it is neither a forall nor an exists.
boolean isLambda = !Native.isQuantifierExists(ctx.nCtx(), obj) && !Native.isQuantifierForall(ctx.nCtx(), obj);
if (isLambda) {
return new Lambda(ctx, obj);
} else {
return new Quantifier(ctx, obj);
}
}
long s = Native.getSort(ctx.nCtx(), obj);
Z3_sort_kind sk = Z3_sort_kind
.fromInt(Native.getSortKind(ctx.nCtx(), s));

2
src/api/java/Lambda.java
View file

@ -126,7 +126,7 @@ public class Lambda<R extends Sort> extends ArrayExpr<Sort, R>
}
private Lambda(Context ctx, long obj)
Lambda(Context ctx, long obj)
{
super(ctx, obj);
}

8
src/api/ml/z3.ml
View file

@ -909,11 +909,17 @@ struct
mk_sort ctx (Symbol.mk_string ctx name) constructors
let mk_sort_ref (ctx: context) (name:Symbol.symbol) =
Z3native.mk_datatype_sort ctx name
Z3native.mk_datatype_sort ctx name 0 []
let mk_sort_ref_s (ctx: context) (name: string) =
mk_sort_ref ctx (Symbol.mk_string ctx name)
let mk_sort_ref_p (ctx: context) (name:Symbol.symbol) (params:Sort.sort list) =
Z3native.mk_datatype_sort ctx name (List.length params) params
let mk_sort_ref_ps (ctx: context) (name: string) (params:Sort.sort list) =
mk_sort_ref_p ctx (Symbol.mk_string ctx name) params
let mk_sorts (ctx:context) (names:Symbol.symbol list) (c:Constructor.constructor list list) =
let n = List.length names in
let f e = ConstructorList.create ctx e in

6
src/api/ml/z3.mli
View file

@ -1087,6 +1087,12 @@ sig
(* [mk_sort_ref_s ctx s] is [mk_sort_ref ctx (Symbol.mk_string ctx s)] *)
val mk_sort_ref_s : context -> string -> Sort.sort
(** Create a forward reference to a parametric datatype sort. *)
val mk_sort_ref_p : context -> Symbol.symbol -> Sort.sort list -> Sort.sort
(** Create a forward reference to a parametric datatype sort. *)
val mk_sort_ref_ps : context -> string -> Sort.sort list -> Sort.sort
(** Create a new datatype sort. *)
val mk_sort : context -> Symbol.symbol -> Constructor.constructor list -> Sort.sort

26
src/api/python/z3/z3.py
View file

@ -5474,10 +5474,30 @@ class DatatypeRef(ExprRef):
"""Return the datatype sort of the datatype expression `self`."""
return DatatypeSortRef(Z3_get_sort(self.ctx_ref(), self.as_ast()), self.ctx)
def DatatypeSort(name, ctx = None):
"""Create a reference to a sort that was declared, or will be declared, as a recursive datatype"""
def DatatypeSort(name, params=None, ctx=None):
"""Create a reference to a sort that was declared, or will be declared, as a recursive datatype.
Args:
name: name of the datatype sort
params: optional list/tuple of sort parameters for parametric datatypes
ctx: Z3 context (optional)
Example:
>>> # Non-parametric datatype
>>> TreeRef = DatatypeSort('Tree')
>>> # Parametric datatype with one parameter
>>> ListIntRef = DatatypeSort('List', [IntSort()])
>>> # Parametric datatype with multiple parameters
>>> PairRef = DatatypeSort('Pair', [IntSort(), BoolSort()])
"""
ctx = _get_ctx(ctx)
return DatatypeSortRef(Z3_mk_datatype_sort(ctx.ref(), to_symbol(name, ctx)), ctx)
if params is None or len(params) == 0:
return DatatypeSortRef(Z3_mk_datatype_sort(ctx.ref(), to_symbol(name, ctx), 0, (Sort * 0)()), ctx)
else:
_params = (Sort * len(params))()
for i in range(len(params)):
_params[i] = params[i].ast
return DatatypeSortRef(Z3_mk_datatype_sort(ctx.ref(), to_symbol(name, ctx), len(params), _params), ctx)
def TupleSort(name, sorts, ctx=None):
"""Create a named tuple sort base on a set of underlying sorts

36
src/api/z3_api.h
View file

@ -2127,6 +2127,33 @@ extern "C" {
unsigned num_constructors,
Z3_constructor constructors[]);
/**
\brief Create a parametric datatype with explicit type parameters.
This function is similar to #Z3_mk_datatype, except it takes an explicit set of type parameters.
The parameters can be type variables created with #Z3_mk_type_variable, allowing the definition
of polymorphic datatypes that can be instantiated with different concrete types.
\param c logical context
\param name name of the datatype
\param num_parameters number of type parameters (can be 0)
\param parameters array of type parameters (type variables or concrete sorts)
\param num_constructors number of constructors
\param constructors array of constructor specifications
\sa Z3_mk_datatype
\sa Z3_mk_type_variable
\sa Z3_mk_datatype_sort
def_API('Z3_mk_polymorphic_datatype', SORT, (_in(CONTEXT), _in(SYMBOL), _in(UINT), _in_array(2, SORT), _in(UINT), _inout_array(4, CONSTRUCTOR)))
*/
Z3_sort Z3_API Z3_mk_polymorphic_datatype(Z3_context c,
Z3_symbol name,
unsigned num_parameters,
Z3_sort parameters[],
unsigned num_constructors,
Z3_constructor constructors[]);
/**
\brief create a forward reference to a recursive datatype being declared.
The forward reference can be used in a nested occurrence: the range of an array
@ -2136,9 +2163,14 @@ extern "C" {
Forward references can replace the use sort references, that are unsigned integers
in the \c Z3_mk_constructor call
def_API('Z3_mk_datatype_sort', SORT, (_in(CONTEXT), _in(SYMBOL)))
\param c logical context
\param name name of the datatype
\param num_params number of sort parameters
\param params array of sort parameters
def_API('Z3_mk_datatype_sort', SORT, (_in(CONTEXT), _in(SYMBOL), _in(UINT), _in_array(2, SORT)))
*/
Z3_sort Z3_API Z3_mk_datatype_sort(Z3_context c, Z3_symbol name);
Z3_sort Z3_API Z3_mk_datatype_sort(Z3_context c, Z3_symbol name, unsigned num_params, Z3_sort const params[]);
/**
\brief Create list of constructors.

6
src/ast/datatype_decl_plugin.cpp
View file

@ -300,6 +300,12 @@ namespace datatype {
TRACE(datatype, tout << "expected sort parameter at position " << i << " got: " << s << "\n";);
throw invalid_datatype();
}
// Allow type variables as parameters for polymorphic datatypes
sort* param_sort = to_sort(s.get_ast());
if (!m_manager->is_type_var(param_sort) && param_sort->get_family_id() == null_family_id) {
// Type variables and concrete sorts are allowed, but not other uninterpreted sorts
// Actually, all sorts should be allowed including uninterpreted ones
}
}
sort* s = m_manager->mk_sort(name.get_symbol(),

15
src/ast/normal_forms/nnf.cpp
View file

@ -566,7 +566,8 @@ struct nnf::imp {
expr * _then = rs[2];
expr * _else = rs[3];
app * r = m.mk_and(m.mk_or(_not_cond, _then), m.mk_or(_cond, _else));
expr* a = m.mk_or(_not_cond, _then);
app * r = m.mk_and(a, m.mk_or(_cond, _else));
m_result_stack.shrink(fr.m_spos);
m_result_stack.push_back(r);
if (proofs_enabled()) {
@ -612,11 +613,13 @@ struct nnf::imp {
app * r;
if (is_eq(t) == fr.m_pol) {
auto a = m.mk_or(not_lhs, rhs);
expr* a = m.mk_or(not_lhs, rhs);
r = m.mk_and(a, m.mk_or(lhs, not_rhs));
}
else
r = m.mk_and(m.mk_or(lhs, rhs), m.mk_or(not_lhs, not_rhs));
else {
expr* a = m.mk_or(lhs, rhs);
r = m.mk_and(a, m.mk_or(not_lhs, not_rhs));
}
m_result_stack.shrink(fr.m_spos);
m_result_stack.push_back(r);
if (proofs_enabled()) {
@ -688,8 +691,8 @@ struct nnf::imp {
if (proofs_enabled()) {
expr_ref aux(m);
aux = m.mk_label(true, names.size(), names.data(), arg);
pr = m.mk_transitivity(mk_proof(fr.m_pol, 1, &arg_pr, t, to_app(aux)),
m.mk_iff_oeq(m.mk_rewrite(aux, r)));
auto a = mk_proof(fr.m_pol, 1, &arg_pr, t, to_app(aux));
pr = m.mk_transitivity(a, m.mk_iff_oeq(m.mk_rewrite(aux, r)));
}
}
else {

30
src/ast/rewriter/arith_rewriter.cpp
View file

@ -720,24 +720,36 @@ br_status arith_rewriter::mk_le_ge_eq_core(expr * arg1, expr * arg2, op_kind kin
}
expr* c = nullptr, *t = nullptr, *e = nullptr;
if (m.is_ite(arg1, c, t, e) && is_numeral(t, a1) && is_numeral(arg2, a2)) {
expr_ref a(m.mk_not(c), m);
switch (kind) {
case LE: result = a1 <= a2 ? m.mk_or(c, m_util.mk_le(e, arg2)) : m.mk_and(m.mk_not(c), m_util.mk_le(e, arg2)); return BR_REWRITE2;
case GE: result = a1 >= a2 ? m.mk_or(c, m_util.mk_ge(e, arg2)) : m.mk_and(m.mk_not(c), m_util.mk_ge(e, arg2)); return BR_REWRITE2;
case EQ: result = a1 == a2 ? m.mk_or(c, m.mk_eq(e, arg2)) : m.mk_and(m.mk_not(c), m_util.mk_eq(e, arg2)); return BR_REWRITE2;
case LE: result = a1 <= a2 ? m.mk_or(c, m_util.mk_le(e, arg2)) : m.mk_and(a, m_util.mk_le(e, arg2)); return BR_REWRITE2;
case GE: result = a1 >= a2 ? m.mk_or(c, m_util.mk_ge(e, arg2)) : m.mk_and(a, m_util.mk_ge(e, arg2)); return BR_REWRITE2;
case EQ: result = a1 == a2 ? m.mk_or(c, m.mk_eq(e, arg2)) : m.mk_and(a, m_util.mk_eq(e, arg2)); return BR_REWRITE2;
}
}
if (m.is_ite(arg1, c, t, e) && is_numeral(e, a1) && is_numeral(arg2, a2)) {
expr_ref a(m.mk_not(c), m);
switch (kind) {
case LE: result = a1 <= a2 ? m.mk_or(m.mk_not(c), m_util.mk_le(t, arg2)) : m.mk_and(c, m_util.mk_le(t, arg2)); return BR_REWRITE2;
case GE: result = a1 >= a2 ? m.mk_or(m.mk_not(c), m_util.mk_ge(t, arg2)) : m.mk_and(c, m_util.mk_ge(t, arg2)); return BR_REWRITE2;
case EQ: result = a1 == a2 ? m.mk_or(m.mk_not(c), m.mk_eq(t, arg2)) : m.mk_and(c, m_util.mk_eq(t, arg2)); return BR_REWRITE2;
case LE: result = a1 <= a2 ? m.mk_or(a, m_util.mk_le(t, arg2)) : m.mk_and(c, m_util.mk_le(t, arg2)); return BR_REWRITE2;
case GE: result = a1 >= a2 ? m.mk_or(a, m_util.mk_ge(t, arg2)) : m.mk_and(c, m_util.mk_ge(t, arg2)); return BR_REWRITE2;
case EQ: result = a1 == a2 ? m.mk_or(a, m.mk_eq(t, arg2)) : m.mk_and(c, m_util.mk_eq(t, arg2)); return BR_REWRITE2;
}
}
if (m.is_ite(arg1, c, t, e) && arg1->get_ref_count() == 1) {
switch (kind) {
case LE: result = m.mk_ite(c, m_util.mk_le(t, arg2), m_util.mk_le(e, arg2)); return BR_REWRITE2;
case GE: result = m.mk_ite(c, m_util.mk_ge(t, arg2), m_util.mk_ge(e, arg2)); return BR_REWRITE2;
case EQ: result = m.mk_ite(c, m.mk_eq(t, arg2), m.mk_eq(e, arg2)); return BR_REWRITE2;
case LE:
{
auto a = m_util.mk_le(t, arg2);
result = m.mk_ite(c, a, m_util.mk_le(e, arg2)); return BR_REWRITE2;
}
case GE: {
auto a = m_util.mk_ge(t, arg2);
result = m.mk_ite(c, a, m_util.mk_ge(e, arg2)); return BR_REWRITE2;
}
case EQ:{
auto a = m.mk_eq(t, arg2);
result = m.mk_ite(c, a, m.mk_eq(e, arg2)); return BR_REWRITE2;
}
}
}
if (m_util.is_to_int(arg2) && is_numeral(arg1)) {

204
src/ast/rewriter/seq_rewriter.cpp
View file

@ -55,7 +55,8 @@ expr_ref sym_expr::accept(expr* e) {
result = m.mk_bool_val((r1 <= r2) && (r2 <= r3));
}
else {
result = m.mk_and(u.mk_le(m_t, e), u.mk_le(e, m_s));
auto a = u.mk_le(m_t, e);
result = m.mk_and(a, u.mk_le(e, m_s));
}
break;
}
@ -190,7 +191,9 @@ br_status seq_rewriter::mk_eq_helper(expr* a, expr* b, expr_ref& result) {
// sa in (ra n rb) u (C(ra) n C(rb))
if (is_not)
rb = re().mk_complement(rb);
expr* r = re().mk_union(re().mk_inter(ra, rb), re().mk_inter(re().mk_complement(ra), re().mk_complement(rb)));
auto a_ = re().mk_inter(ra, rb);
auto b_ = re().mk_complement(ra);
expr* r = re().mk_union(a_, re().mk_inter(b_, re().mk_complement(rb)));
result = re().mk_in_re(sa, r);
return BR_REWRITE_FULL;
}
@ -620,10 +623,14 @@ expr_ref seq_rewriter::mk_seq_rest(expr* t) {
expr_ref result(m());
expr* s, * j, * k;
rational jv;
if (str().is_extract(t, s, j, k) && m_autil.is_numeral(j, jv) && jv >= 0)
result = str().mk_substr(s, m_autil.mk_int(jv + 1), mk_sub(k, 1));
else
result = str().mk_substr(t, one(), mk_sub(str().mk_length(t), 1));
if (str().is_extract(t, s, j, k) && m_autil.is_numeral(j, jv) && jv >= 0) {
auto a = m_autil.mk_int(jv + 1);
result = str().mk_substr(s, a, mk_sub(k, 1));
}
else {
auto a = one();
result = str().mk_substr(t, a, mk_sub(str().mk_length(t), 1));
}
return result;
}
@ -654,7 +661,10 @@ expr_ref seq_rewriter::mk_seq_last(expr* t) {
* No: if k > |s| then substring(s,0,k) = substring(s,0,k-1)
*/
expr_ref seq_rewriter::mk_seq_butlast(expr* t) {
return expr_ref(str().mk_substr(t, zero(), m_autil.mk_sub(str().mk_length(t), one())), m());
auto b = zero();
auto c = str().mk_length(t);
auto a = str().mk_substr(t, b, m_autil.mk_sub(c, one()));
return expr_ref(a, m());
}
/*
@ -1374,9 +1384,16 @@ br_status seq_rewriter::mk_seq_nth(expr* a, expr* b, expr_ref& result) {
}
expr* la = str().mk_length(a);
result = m().mk_ite(m().mk_and(m_autil.mk_ge(b, zero()), m().mk_not(m_autil.mk_le(la, b))),
str().mk_nth_i(a, b),
str().mk_nth_u(a, b));
{
// deterministic evaluation order for guard components
auto ge0 = m_autil.mk_ge(b, zero());
auto le_la = m_autil.mk_le(la, b);
auto not_le = m().mk_not(le_la);
auto guard = m().mk_and(ge0, not_le);
auto t1 = str().mk_nth_i(a, b);
auto e1 = str().mk_nth_u(a, b);
result = m().mk_ite(guard, t1, e1);
}
return BR_REWRITE_FULL;
}
@ -1547,17 +1564,20 @@ br_status seq_rewriter::mk_seq_index(expr* a, expr* b, expr* c, expr_ref& result
}
if (str().is_empty(b)) {
result = m().mk_ite(m().mk_and(m_autil.mk_le(zero(), c),
m_autil.mk_le(c, str().mk_length(a))),
c,
minus_one());
// enforce deterministic evaluation order for bounds checks
auto a1 = m_autil.mk_le(zero(), c);
auto b1 = m_autil.mk_le(c, str().mk_length(a));
auto cond = m().mk_and(a1, b1);
result = m().mk_ite(cond, c, minus_one());
return BR_REWRITE2;
}
if (str().is_empty(a)) {
expr* emp = str().mk_is_empty(b);
result = m().mk_ite(m().mk_and(m().mk_eq(c, zero()), emp), zero(), minus_one());
auto a1 = m().mk_eq(c, zero());
auto cond = m().mk_and(a1, emp);
result = m().mk_ite(cond, zero(), minus_one());
return BR_REWRITE2;
}
@ -1870,7 +1890,10 @@ br_status seq_rewriter::mk_seq_map(expr* f, expr* seqA, expr_ref& result) {
return BR_REWRITE2;
}
if (str().is_concat(seqA, s1, s2)) {
result = str().mk_concat(str().mk_map(f, s1), str().mk_map(f, s2));
// introduce temporaries to ensure deterministic evaluation order of recursive map calls
auto m1 = str().mk_map(f, s1);
auto m2 = str().mk_map(f, s2);
result = str().mk_concat(m1, m2);
return BR_REWRITE2;
}
return BR_FAILED;
@ -1890,7 +1913,9 @@ br_status seq_rewriter::mk_seq_mapi(expr* f, expr* i, expr* seqA, expr_ref& resu
}
if (str().is_concat(seqA, s1, s2)) {
expr_ref j(m_autil.mk_add(i, str().mk_length(s1)), m());
result = str().mk_concat(str().mk_mapi(f, i, s1), str().mk_mapi(f, j, s2));
auto left = str().mk_mapi(f, i, s1);
auto right = str().mk_mapi(f, j, s2);
result = str().mk_concat(left, right);
return BR_REWRITE2;
}
return BR_FAILED;
@ -2046,8 +2071,8 @@ br_status seq_rewriter::mk_seq_prefix(expr* a, expr* b, expr_ref& result) {
SASSERT(bs.size() > 1);
s1 = s1.extract(s2.length(), s1.length() - s2.length());
as[0] = str().mk_string(s1);
result = str().mk_prefix(str().mk_concat(as.size(), as.data(), sort_a),
str().mk_concat(bs.size()-1, bs.data()+1, sort_a));
auto a = str().mk_concat(as.size(), as.data(), sort_a);
result = str().mk_prefix(a, str().mk_concat(bs.size()-1, bs.data()+1, sort_a));
TRACE(seq, tout << s1 << " " << s2 << " " << result << "\n";);
return BR_REWRITE_FULL;
}
@ -2384,7 +2409,8 @@ br_status seq_rewriter::mk_str_stoi(expr* a, expr_ref& result) {
}
expr* b;
if (str().is_itos(a, b)) {
result = m().mk_ite(m_autil.mk_ge(b, zero()), b, minus_one());
auto a = m_autil.mk_ge(b, zero());
result = m().mk_ite(a, b, minus_one());
return BR_DONE;
}
if (str().is_ubv2s(a, b)) {
@ -2395,7 +2421,8 @@ br_status seq_rewriter::mk_str_stoi(expr* a, expr_ref& result) {
expr* c = nullptr, *t = nullptr, *e = nullptr;
if (m().is_ite(a, c, t, e)) {
result = m().mk_ite(c, str().mk_stoi(t), str().mk_stoi(e));
auto a = str().mk_stoi(t);
result = m().mk_ite(c, a, str().mk_stoi(e));
return BR_REWRITE_FULL;
}
@ -2703,7 +2730,10 @@ br_status seq_rewriter::mk_re_reverse(expr* r, expr_ref& result) {
zstring zs;
unsigned lo = 0, hi = 0;
if (re().is_concat(r, r1, r2)) {
result = re().mk_concat(re().mk_reverse(r2), re().mk_reverse(r1));
// deterministic evaluation order for reverse operands
auto a_rev = re().mk_reverse(r2);
auto b_rev = re().mk_reverse(r1);
result = re().mk_concat(a_rev, b_rev);
return BR_REWRITE2;
}
else if (re().is_star(r, r1)) {
@ -2715,15 +2745,22 @@ br_status seq_rewriter::mk_re_reverse(expr* r, expr_ref& result) {
return BR_REWRITE2;
}
else if (re().is_union(r, r1, r2)) {
result = re().mk_union(re().mk_reverse(r1), re().mk_reverse(r2));
// ensure deterministic evaluation order of parameters
auto a = re().mk_reverse(r1);
auto b = re().mk_reverse(r2);
result = re().mk_union(a, b);
return BR_REWRITE2;
}
else if (re().is_intersection(r, r1, r2)) {
result = re().mk_inter(re().mk_reverse(r1), re().mk_reverse(r2));
auto a = re().mk_reverse(r1);
auto b = re().mk_reverse(r2);
result = re().mk_inter(a, b);
return BR_REWRITE2;
}
else if (re().is_diff(r, r1, r2)) {
result = re().mk_diff(re().mk_reverse(r1), re().mk_reverse(r2));
auto a = re().mk_reverse(r1);
auto b = re().mk_reverse(r2);
result = re().mk_diff(a, b);
return BR_REWRITE2;
}
else if (m().is_ite(r, p, r1, r2)) {
@ -2767,8 +2804,9 @@ br_status seq_rewriter::mk_re_reverse(expr* r, expr_ref& result) {
return BR_DONE;
}
else if (re().is_to_re(r, s) && str().is_concat(s, s1, s2)) {
result = re().mk_concat(re().mk_reverse(re().mk_to_re(s2)),
re().mk_reverse(re().mk_to_re(s1)));
auto a_rev = re().mk_reverse(re().mk_to_re(s2));
auto b_rev = re().mk_reverse(re().mk_to_re(s1));
result = re().mk_concat(a_rev, b_rev);
return BR_REWRITE3;
}
else {
@ -2957,7 +2995,11 @@ void seq_rewriter::mk_antimirov_deriv_rec(expr* e, expr* r, expr* path, expr_ref
}
else {
// observe that the precondition |r1|>0 is is implied by c1 for use of mk_seq_first
m_br.mk_and(m().mk_not(m().mk_eq(r1, str().mk_empty(seq_sort))), m().mk_eq(mk_seq_first(r1), e), c1);
{
auto is_non_empty = m().mk_not(m().mk_eq(r1, str().mk_empty(seq_sort)));
auto eq_first = m().mk_eq(mk_seq_first(r1), e);
m_br.mk_and(is_non_empty, eq_first, c1);
}
m_br.mk_and(path, c1, c2);
if (m().is_false(c2))
result = nothing();
@ -2970,7 +3012,11 @@ void seq_rewriter::mk_antimirov_deriv_rec(expr* e, expr* r, expr* path, expr_ref
if (re().is_to_re(r2, r1)) {
// here r1 is a sequence
// observe that the precondition |r1|>0 of mk_seq_last is implied by c1
m_br.mk_and(m().mk_not(m().mk_eq(r1, str().mk_empty(seq_sort))), m().mk_eq(mk_seq_last(r1), e), c1);
{
auto is_non_empty = m().mk_not(m().mk_eq(r1, str().mk_empty(seq_sort)));
auto eq_last = m().mk_eq(mk_seq_last(r1), e);
m_br.mk_and(is_non_empty, eq_last, c1);
}
m_br.mk_and(path, c1, c2);
if (m().is_false(c2))
result = nothing();
@ -3002,8 +3048,15 @@ void seq_rewriter::mk_antimirov_deriv_rec(expr* e, expr* r, expr* path, expr_ref
result = mk_antimirov_deriv_union(c1, re().mk_ite_simplify(r1nullable, mk_antimirov_deriv(e, r2, path), nothing()));
}
else if (m().is_ite(r, c, r1, r2)) {
c1 = simplify_path(e, m().mk_and(c, path));
c2 = simplify_path(e, m().mk_and(m().mk_not(c), path));
{
auto cp = m().mk_and(c, path);
c1 = simplify_path(e, cp);
}
{
auto notc = m().mk_not(c);
auto np = m().mk_and(notc, path);
c2 = simplify_path(e, np);
}
if (m().is_false(c1))
result = mk_antimirov_deriv(e, r2, c2);
else if (m().is_false(c2))
@ -3018,7 +3071,11 @@ void seq_rewriter::mk_antimirov_deriv_rec(expr* e, expr* r, expr* path, expr_ref
// SASSERT(u().is_char(c1));
// SASSERT(u().is_char(c2));
// case: c1 <= e <= c2
range = simplify_path(e, m().mk_and(u().mk_le(c1, e), u().mk_le(e, c2)));
// deterministic evaluation for range bounds
auto a_le = u().mk_le(c1, e);
auto b_le = u().mk_le(e, c2);
auto rng_cond = m().mk_and(a_le, b_le);
range = simplify_path(e, rng_cond);
psi = simplify_path(e, m().mk_and(path, range));
}
else if (!str().is_string(r1) && str().is_unit_string(r2, c2)) {
@ -3399,12 +3456,22 @@ expr_ref seq_rewriter::mk_regex_reverse(expr* r) {
result = mk_regex_concat(mk_regex_reverse(r2), mk_regex_reverse(r1));
else if (m().is_ite(r, c, r1, r2))
result = m().mk_ite(c, mk_regex_reverse(r1), mk_regex_reverse(r2));
else if (re().is_union(r, r1, r2))
result = re().mk_union(mk_regex_reverse(r1), mk_regex_reverse(r2));
else if (re().is_intersection(r, r1, r2))
result = re().mk_inter(mk_regex_reverse(r1), mk_regex_reverse(r2));
else if (re().is_diff(r, r1, r2))
result = re().mk_diff(mk_regex_reverse(r1), mk_regex_reverse(r2));
else if (re().is_union(r, r1, r2)) {
// enforce deterministic evaluation order
auto a1 = mk_regex_reverse(r1);
auto b1 = mk_regex_reverse(r2);
result = re().mk_union(a1, b1);
}
else if (re().is_intersection(r, r1, r2)) {
auto a1 = mk_regex_reverse(r1);
auto b1 = mk_regex_reverse(r2);
result = re().mk_inter(a1, b1);
}
else if (re().is_diff(r, r1, r2)) {
auto a1 = mk_regex_reverse(r1);
auto b1 = mk_regex_reverse(r2);
result = re().mk_diff(a1, b1);
}
else if (re().is_star(r, r1))
result = re().mk_star(mk_regex_reverse(r1));
else if (re().is_plus(r, r1))
@ -3982,8 +4049,13 @@ expr_ref seq_rewriter::mk_derivative_rec(expr* ele, expr* r) {
// if ((isdigit ele) and (ele = (hd r1))) then (to_re (tl r1)) else []
//
hd = mk_seq_first(r1);
m_br.mk_and(u().mk_le(m_util.mk_char('0'), ele), u().mk_le(ele, m_util.mk_char('9')),
m().mk_and(m().mk_not(m().mk_eq(r1, str().mk_empty(seq_sort))), m().mk_eq(hd, ele)), result);
// isolate nested conjunction for deterministic evaluation
auto a0 = u().mk_le(m_util.mk_char('0'), ele);
auto a1 = u().mk_le(ele, m_util.mk_char('9'));
auto a2 = m().mk_not(m().mk_eq(r1, str().mk_empty(seq_sort)));
auto a3 = m().mk_eq(hd, ele);
auto inner = m().mk_and(a2, a3);
m_br.mk_and(a0, a1, inner, result);
tl = re().mk_to_re(mk_seq_rest(r1));
return re_and(result, tl);
}
@ -4017,7 +4089,10 @@ expr_ref seq_rewriter::mk_derivative_rec(expr* ele, expr* r) {
// tl = rest of reverse(r2) i.e. butlast of r2
//hd = str().mk_nth_i(r2, m_autil.mk_sub(str().mk_length(r2), one()));
hd = mk_seq_last(r2);
m_br.mk_and(m().mk_not(m().mk_eq(r2, str().mk_empty(seq_sort))), m().mk_eq(hd, ele), result);
// factor nested constructor calls to enforce deterministic argument evaluation order
auto a_non_empty = m().mk_not(m().mk_eq(r2, str().mk_empty(seq_sort)));
auto a_eq = m().mk_eq(hd, ele);
m_br.mk_and(a_non_empty, a_eq, result);
tl = re().mk_to_re(mk_seq_butlast(r2));
return re_and(result, re().mk_reverse(tl));
}
@ -4302,9 +4377,11 @@ br_status seq_rewriter::mk_str_in_regexp(expr* a, expr* b, expr_ref& result) {
(re().is_union(b, b1, eps) && re().is_epsilon(eps)) ||
(re().is_union(b, eps, b1) && re().is_epsilon(eps)))
{
result = m().mk_ite(m().mk_eq(str().mk_length(a), zero()),
m().mk_true(),
re().mk_in_re(a, b1));
// deterministic evaluation order: build sub-expressions first
auto len_a = str().mk_length(a);
auto is_empty = m().mk_eq(len_a, zero());
auto in_b1 = re().mk_in_re(a, b1);
result = m().mk_ite(is_empty, m().mk_true(), in_b1);
return BR_REWRITE_FULL;
}
if (str().is_empty(a)) {
@ -4334,9 +4411,10 @@ br_status seq_rewriter::mk_str_in_regexp(expr* a, expr* b, expr_ref& result) {
expr_ref len_hd(m_autil.mk_int(re().min_length(hd)), m());
expr_ref len_a(str().mk_length(a), m());
expr_ref len_tl(m_autil.mk_sub(len_a, len_hd), m());
result = m().mk_and(m_autil.mk_ge(len_a, len_hd),
re().mk_in_re(str().mk_substr(a, zero(), len_hd), hd),
re().mk_in_re(str().mk_substr(a, len_hd, len_tl), tl));
auto ge_len = m_autil.mk_ge(len_a, len_hd);
auto prefix = re().mk_in_re(str().mk_substr(a, zero(), len_hd), hd);
auto suffix = re().mk_in_re(str().mk_substr(a, len_hd, len_tl), tl);
result = m().mk_and(ge_len, prefix, suffix);
return BR_REWRITE_FULL;
}
if (get_re_head_tail_reversed(b, hd, tl)) {
@ -4345,10 +4423,11 @@ br_status seq_rewriter::mk_str_in_regexp(expr* a, expr* b, expr_ref& result) {
expr_ref len_a(str().mk_length(a), m());
expr_ref len_hd(m_autil.mk_sub(len_a, len_tl), m());
expr* s = nullptr;
result = m().mk_and(m_autil.mk_ge(len_a, len_tl),
re().mk_in_re(str().mk_substr(a, zero(), len_hd), hd),
(re().is_to_re(tl, s) ? m().mk_eq(s, str().mk_substr(a, len_hd, len_tl)) :
re().mk_in_re(str().mk_substr(a, len_hd, len_tl), tl)));
auto ge_len = m_autil.mk_ge(len_a, len_tl);
auto prefix = re().mk_in_re(str().mk_substr(a, zero(), len_hd), hd);
auto tail_seq = str().mk_substr(a, len_hd, len_tl);
auto tail = (re().is_to_re(tl, s) ? m().mk_eq(s, tail_seq) : re().mk_in_re(tail_seq, tl));
result = m().mk_and(ge_len, prefix, tail);
return BR_REWRITE_FULL;
}
@ -4614,11 +4693,17 @@ br_status seq_rewriter::mk_re_union(expr* a, expr* b, expr_ref& result) {
br_status seq_rewriter::mk_re_complement(expr* a, expr_ref& result) {
expr *e1 = nullptr, *e2 = nullptr;
if (re().is_intersection(a, e1, e2)) {
result = re().mk_union(re().mk_complement(e1), re().mk_complement(e2));
// enforce deterministic evaluation order for nested complement arguments
auto a1 = re().mk_complement(e1);
auto b1 = re().mk_complement(e2);
result = re().mk_union(a1, b1);
return BR_REWRITE2;
}
if (re().is_union(a, e1, e2)) {
result = re().mk_inter(re().mk_complement(e1), re().mk_complement(e2));
// enforce deterministic evaluation order for nested complement arguments
auto a1 = re().mk_complement(e1);
auto b1 = re().mk_complement(e2);
result = re().mk_inter(a1, b1);
return BR_REWRITE2;
}
if (re().is_empty(a)) {
@ -5011,7 +5096,9 @@ void seq_rewriter::elim_condition(expr* elem, expr_ref& cond) {
rep.insert(elem, solution);
rep(cond);
if (!is_uninterp_const(elem)) {
cond = m().mk_and(m().mk_eq(elem, solution), cond);
// ensure deterministic evaluation order when augmenting condition
auto eq_sol = m().mk_eq(elem, solution);
cond = m().mk_and(eq_sol, cond);
}
}
else if (all_ranges) {
@ -5074,11 +5161,16 @@ br_status seq_rewriter::reduce_re_is_empty(expr* r, expr_ref& result) {
}
// Partial DNF expansion:
else if (re().is_intersection(r, r1, r2) && re().is_union(r1, r3, r4)) {
result = eq_empty(re().mk_union(re().mk_inter(r3, r2), re().mk_inter(r4, r2)));
// enforce deterministic order for nested intersections inside union
auto a1 = re().mk_inter(r3, r2);
auto b1 = re().mk_inter(r4, r2);
result = eq_empty(re().mk_union(a1, b1));
return BR_REWRITE3;
}
else if (re().is_intersection(r, r1, r2) && re().is_union(r2, r3, r4)) {
result = eq_empty(re().mk_union(re().mk_inter(r3, r1), re().mk_inter(r4, r1)));
auto a1 = re().mk_inter(r3, r1);
auto b1 = re().mk_inter(r4, r1);
result = eq_empty(re().mk_union(a1, b1));
return BR_REWRITE3;
}
return BR_FAILED;

29
src/ast/sls/sls_bv_tracker.h
View file

@ -42,8 +42,37 @@ class sls_tracker {
struct value_score {
value_score() : value(unsynch_mpz_manager::mk_z(0)) {};
value_score(value_score&&) noexcept = default;
value_score(const value_score &other) {
m = other.m;
if (other.m && !unsynch_mpz_manager::is_zero(other.value)) {
m->set(value, other.value);
}
score = other.score;
score_prune = other.score_prune;
has_pos_occ = other.has_pos_occ;
has_neg_occ = other.has_neg_occ;
distance = other.distance;
touched = other.touched;
}
~value_score() { if (m) m->del(value); }
value_score& operator=(value_score&&) = default;
value_score &operator=(const value_score &other) {
if (this != &other) {
if (m)
m->del(value);
m = other.m;
if (other.m && !unsynch_mpz_manager::is_zero(other.value)) {
m->set(value, other.value);
}
score = other.score;
score_prune = other.score_prune;
has_pos_occ = other.has_pos_occ;
has_neg_occ = other.has_neg_occ;
distance = other.distance;
touched = other.touched;
}
return *this;
}
unsynch_mpz_manager * m = nullptr;
mpz value;
double score = 0.0;

48
src/cmd_context/basic_cmds.cpp
View file

@ -334,6 +334,52 @@ public:
}
};
class prefer_cmd : public cmd {
expr *m_formula = nullptr;
public:
prefer_cmd() : cmd("prefer") {}
char const *get_usage() const override {
return "<formula>";
}
char const *get_descr(cmd_context &ctx) const override {
return "set a preferred formula for the solver";
}
unsigned get_arity() const override {
return 1;
}
void prepare(cmd_context &ctx) override {
m_formula = nullptr;
}
cmd_arg_kind next_arg_kind(cmd_context &ctx) const override {
return CPK_EXPR;
}
void set_next_arg(cmd_context &ctx, expr *e) override {
m_formula = e;
}
void execute(cmd_context &ctx) override {
SASSERT(m_formula);
ctx.set_preferred(m_formula);
}
};
class reset_preferences_cmd : public cmd {
public:
reset_preferences_cmd() : cmd("reset-preferences") {}
char const *get_usage() const override {
return "";
}
char const *get_descr(cmd_context &ctx) const override {
return "reset all preferred formulas";
}
unsigned get_arity() const override {
return 0;
}
void execute(cmd_context &ctx) override {
ctx.reset_preferred();
}
};
class set_get_option_cmd : public cmd {
protected:
symbol m_true;
@ -926,6 +972,8 @@ void install_basic_cmds(cmd_context & ctx) {
ctx.insert(alloc(get_info_cmd));
ctx.insert(alloc(set_info_cmd));
ctx.insert(alloc(set_initial_value_cmd));
ctx.insert(alloc(prefer_cmd));
ctx.insert(alloc(reset_preferences_cmd));
ctx.insert(alloc(get_consequences_cmd));
ctx.insert(alloc(builtin_cmd, "assert", "<term>", "assert term."));
ctx.insert(alloc(builtin_cmd, "check-sat", "<boolean-constants>*", "check if the current context is satisfiable. If a list of boolean constants B is provided, then check if the current context is consistent with assigning every constant in B to true."));

33
src/cmd_context/cmd_context.cpp
View file

@ -628,6 +628,7 @@ cmd_context::~cmd_context() {
finalize_tactic_manager();
m_proof_cmds = nullptr;
m_var2values.reset();
m_preferred = nullptr;
reset(true);
m_mcs.reset();
m_solver = nullptr;
@ -656,6 +657,8 @@ void cmd_context::set_opt(opt_wrapper* opt) {
for (auto const& [var, value] : m_var2values)
m_opt->initialize_value(var, value);
m_opt->set_logic(m_logic);
if (m_preferred)
m_opt->set_preferred(m_preferred.get());
}
void cmd_context::global_params_updated() {
@ -1518,6 +1521,8 @@ void cmd_context::reset(bool finalize) {
m_dt_eh = nullptr;
m_std_subst = nullptr;
m_rev_subst = nullptr;
m_preferred = nullptr;
m_var2values.reset();
if (m_manager) {
dealloc(m_pmanager);
m_pmanager = nullptr;
@ -1884,6 +1889,27 @@ void cmd_context::set_initial_value(expr* var, expr* value) {
m_var2values.push_back({expr_ref(var, m()), expr_ref(value, m())});
}
void cmd_context::set_preferred(expr* fmla) {
if (!m_preferred) {
auto p = alloc(preferred_value_propagator, m());
m_preferred = p;
if (get_solver()) {
get_solver()->user_propagate_init(p, p->push_eh, p->pop_eh, p->fresh_eh);
get_solver()->user_propagate_register_decide(p->decide_eh);
}
}
if (get_opt())
get_opt()->set_preferred(m_preferred.get());
m_preferred->set_preferred(fmla);
}
void cmd_context::reset_preferred() {
if (!m_scopes.empty())
throw default_exception("reset-preferred can only be invoked at base level");
if (m_preferred)
m_preferred->reset_preferred();
}
void cmd_context::display_model(model_ref& mdl) {
if (mdl) {
@ -2261,8 +2287,13 @@ void cmd_context::mk_solver() {
m_params.get_solver_params(p, proofs_enabled, models_enabled, unsat_core_enabled);
m_solver = (*m_solver_factory)(m(), p, proofs_enabled, models_enabled, unsat_core_enabled, m_logic);
m_solver = mk_slice_solver(m_solver.get());
if (m_simplifier_factory)
if (m_simplifier_factory)
m_solver = mk_simplifier_solver(m_solver.get(), &m_simplifier_factory);
if (m_preferred) {
auto p = m_preferred.get();
m_solver->user_propagate_init(p, p->push_eh, p->pop_eh, p->fresh_eh);
m_solver->user_propagate_register_decide(p->decide_eh);
}
}

9
src/cmd_context/cmd_context.h
View file

@ -39,6 +39,7 @@ Notes:
#include "solver/check_logic.h"
#include "solver/progress_callback.h"
#include "solver/simplifier_solver.h"
#include "solver/preferred_value_propagator.h"
#include "cmd_context/pdecl.h"
#include "cmd_context/tactic_manager.h"
#include "params/context_params.h"
@ -163,6 +164,9 @@ struct builtin_decl {
};
class opt_wrapper : public check_sat_result {
protected:
preferred_value_propagator *m_preferred = nullptr;
public:
opt_wrapper(ast_manager& m): check_sat_result(m) {}
virtual bool empty() = 0;
@ -176,7 +180,7 @@ public:
virtual void get_box_model(model_ref& mdl, unsigned index) = 0;
virtual void updt_params(params_ref const& p) = 0;
virtual void initialize_value(expr* var, expr* value) = 0;
void set_preferred(preferred_value_propagator *p) { m_preferred = p; }
};
class ast_context_params : public context_params {
@ -265,6 +269,7 @@ protected:
dictionary<object_ref*> m_object_refs; // anything that can be named.
dictionary<sexpr*> m_user_tactic_decls;
vector<std::pair<expr_ref, expr_ref>> m_var2values;
scoped_ptr<preferred_value_propagator> m_preferred;
dictionary<func_decls> m_func_decls;
obj_map<func_decl, symbol> m_func_decl2alias;
@ -429,6 +434,8 @@ public:
void set_solver(solver* s) { m_solver = s; }
void set_proof_cmds(proof_cmds* pc) { m_proof_cmds = pc; }
void set_initial_value(expr* var, expr* value);
void set_preferred(expr *fmla);
void reset_preferred();
void set_solver_factory(solver_factory * s);
void set_simplifier_factory(simplifier_factory& sf) { m_simplifier_factory = sf; }

20
src/muz/base/dl_context.cpp
View file

@ -776,10 +776,26 @@ namespace datalog {
array_util ar;
DL_ENGINE m_engine_type;
bool is_large_bv(sort* s) {
bool is_large_bv(expr *e) {
sort *s = e->get_sort();
if (bv.is_bv_sort(s)) {
unsigned sz = bv.get_bv_size(s);
if (sz > 24)
return true;
}
if (is_app(e)) {
unsigned sz = 0;
for (auto arg : *to_app(e)) {
if (bv.is_bv(arg))
sz += bv.get_bv_size(arg->get_sort());
}
if (sz > 24)
return true;
}
return false;
}
public:
engine_type_proc(ast_manager& m): m(m), a(m), dt(m), bv(m), ar(m), m_engine_type(DATALOG_ENGINE) {}
@ -795,7 +811,7 @@ namespace datalog {
else if (dt.is_datatype(e->get_sort())) {
m_engine_type = SPACER_ENGINE;
}
else if (is_large_bv(e->get_sort())) {
else if (is_large_bv(e)) {
m_engine_type = SPACER_ENGINE;
}
else if (!e->get_sort()->get_num_elements().is_finite()) {

18
src/nlsat/nlsat_explain.cpp
View file

@ -1226,6 +1226,7 @@ namespace nlsat {
* https://arxiv.org/abs/2003.00409
*/
void project_cdcac(polynomial_ref_vector & ps, var max_x) {
bool first = true;
if (ps.empty())
return;
@ -1244,8 +1245,6 @@ namespace nlsat {
// Remark: after vanishing coefficients are eliminated, ps may not contain max_x anymore
polynomial_ref_vector samples(m_pm);
if (x < max_x)
cac_add_cell_lits(ps, x, samples);
@ -1256,9 +1255,18 @@ namespace nlsat {
}
TRACE(nlsat_explain, tout << "project loop, processing var "; display_var(tout, x); tout << "\npolynomials\n";
display(tout, ps); tout << "\n";);
add_lcs(ps, x);
psc_discriminant(ps, x);
psc_resultant(ps, x);
if (first) { // The first run is special because x is not constrained by the sample, we cannot surround it by the root functions.
// we make the polynomials in ps delinable
add_lcs(ps, x);
psc_discriminant(ps, x);
psc_resultant(ps, x);
first = false;
}
else {
add_lcs(ps, x);
psc_discriminant(ps, x);
psc_resultant_sample(ps, x, samples);
}
if (m_todo.empty())
break;

5
src/opt/opt_context.cpp
View file

@ -316,6 +316,11 @@ namespace opt {
m_model_converter->convert_initialize_value(m_scoped_state.m_values);
for (auto & [var, value] : m_scoped_state.m_values)
s.user_propagate_initialize_value(var, value);
if (m_preferred) {
auto p = m_preferred;
s.user_propagate_init(p, p->push_eh, p->pop_eh, p->fresh_eh);
s.user_propagate_register_decide(p->decide_eh);
}
opt_params optp(m_params);
symbol pri = optp.priority();

3
src/opt/opt_context.h
View file

@ -22,6 +22,7 @@ Notes:
#include "ast/bv_decl_plugin.h"
#include "ast/converters/model_converter.h"
#include "tactic/tactic.h"
#include "solver/preferred_value_propagator.h"
#include "qe/qsat.h"
#include "opt/opt_solver.h"
#include "opt/opt_pareto.h"
@ -231,7 +232,7 @@ namespace opt {
void get_labels(svector<symbol> & r) override;
void get_unsat_core(expr_ref_vector & r) override;
std::string reason_unknown() const override;
void set_reason_unknown(char const* msg) override { m_unknown = msg; }
void set_reason_unknown(char const* msg) override { m_unknown = msg; }
void display_assignment(std::ostream& out) override;
bool is_pareto() override { return m_pareto.get() != nullptr; }

43
src/opt/opt_solver.h
View file

@ -117,6 +117,49 @@ namespace opt {
void set_phase(phase* p) override { m_context.set_phase(p); }
void move_to_front(expr* e) override { m_context.move_to_front(e); }
void user_propagate_initialize_value(expr* var, expr* value) override { m_context.user_propagate_initialize_value(var, value); }
void user_propagate_init(void *ctx, user_propagator::push_eh_t &push_eh, user_propagator::pop_eh_t &pop_eh, user_propagator::fresh_eh_t &fresh_eh) override {
m_context.user_propagate_init(ctx, push_eh, pop_eh, fresh_eh);
m_first = false;
}
void user_propagate_register_fixed(user_propagator::fixed_eh_t &fixed_eh) override {
m_context.user_propagate_register_fixed(fixed_eh);
}
void user_propagate_register_final(user_propagator::final_eh_t &final_eh) override {
m_context.user_propagate_register_final(final_eh);
}
void user_propagate_register_eq(user_propagator::eq_eh_t &eq_eh) override {
m_context.user_propagate_register_eq(eq_eh);
}
void user_propagate_register_diseq(user_propagator::eq_eh_t &diseq_eh) override {
m_context.user_propagate_register_diseq(diseq_eh);
}
void user_propagate_register_expr(expr *e) override {
m_context.user_propagate_register_expr(e);
}
void user_propagate_register_created(user_propagator::created_eh_t &r) override {
m_context.user_propagate_register_created(r);
}
void user_propagate_register_decide(user_propagator::decide_eh_t &r) override {
m_context.user_propagate_register_decide(r);
}
void user_propagate_register_on_binding(user_propagator::binding_eh_t &r) override {
m_context.user_propagate_register_on_binding(r);
}
void user_propagate_clear() override {
}
void register_on_clause(void *, user_propagator::on_clause_eh_t &r) override {
m_context.register_on_clause(nullptr, r);
}
void set_logic(symbol const& logic);

21
src/parsers/smt2/smt2parser.cpp
View file

@ -1621,7 +1621,7 @@ namespace smt2 {
if (curr_id_is_underscore()) {
has_as = false;
return parse_indexed_identifier_core();
}
}
else {
SASSERT(curr_id_is_as());
has_as = true;
@ -1638,8 +1638,10 @@ namespace smt2 {
// '(' 'as' <identifier> <sort> ')'
// '(' '_' <identifier> <num>+ ')'
// '(' 'as' <identifier '(' '_' <identifier> (<num>|<func-decl-ref>)+ ')' <sort> ')'
symbol parse_qualified_identifier(bool & has_as) {
// '(' lambda (...) <expr> ')'
symbol parse_qualified_identifier(bool & has_as, bool & is_lambda) {
SASSERT(curr_is_lparen() || curr_is_identifier());
is_lambda = false;
if (curr_is_identifier()) {
has_as = false;
symbol r = curr_id();
@ -1648,6 +1650,12 @@ namespace smt2 {
}
SASSERT(curr_is_lparen());
next();
if (curr_id_is_lambda()) {
is_lambda = true;
has_as = false;
return symbol("select");
}
if (!curr_is_identifier() || (!curr_id_is_underscore() && !curr_id_is_as()))
throw parser_exception("invalid qualified/indexed identifier, '_' or 'as' expected");
return parse_qualified_identifier_core(has_as);
@ -1860,11 +1868,14 @@ namespace smt2 {
SASSERT(curr_is_lparen() || curr_is_identifier());
unsigned param_spos = m_param_stack.size();
unsigned expr_spos = expr_stack().size();
bool has_as;
symbol f = parse_qualified_identifier(has_as);
void * mem = m_stack.allocate(sizeof(quant_frame));
bool has_as, is_lambda;
auto f = parse_qualified_identifier(has_as, is_lambda);
void * mem = m_stack.allocate(sizeof(app_frame));
new (mem) app_frame(f, expr_spos, param_spos, has_as);
m_num_expr_frames++;
if (is_lambda)
push_quant_frame(lambda_k);
}
void push_expr_frame(expr_frame * curr) {

2
src/smt/theory_bv.cpp
View file

@ -1890,6 +1890,8 @@ namespace smt {
theory_bv::var_enode_pos theory_bv::get_bv_with_theory(bool_var v, theory_id id) const {
atom* a = get_bv2a(v);
if (!a)
return var_enode_pos(nullptr, UINT32_MAX);
svector<var_enode_pos> vec;
if (!a->is_bit())
return var_enode_pos(nullptr, UINT32_MAX);

63
src/smt/theory_user_propagator.cpp
View file

@ -209,61 +209,36 @@ void theory_user_propagator::decide(bool_var& var, bool& is_pos) {
if (!m_decide_eh)
return;
const bool_var_data& d = ctx.get_bdata(var);
expr *e = ctx.bool_var2expr(var);
if (!e)
e = m.mk_true(); // use a dummy case split atom.
if (!d.is_enode() && !d.is_theory_atom())
return;
enode* original_enode = nullptr;
unsigned original_bit = 0;
bv_util bv(m);
theory* th = nullptr;
theory_var v = null_theory_var;
// get the associated theory
if (!d.is_enode()) {
// it might be a value that does not have an enode
th = ctx.get_theory(d.get_theory());
}
else {
original_enode = ctx.bool_var2enode(var);
v = original_enode->get_th_var(get_family_id());
if (v == null_theory_var) {
// it is not a registered boolean expression
th = ctx.get_theory(d.get_theory());
unsigned bit = 0;
// determine if case split is a bit-position in a bit-vector
{
bv_util bv(m);
auto th = ctx.get_theory(bv.get_fid());
if (th) {
// it is then n'th bit of a bit-vector n.
auto [n, nbit] = static_cast<theory_bv *>(th)->get_bv_with_theory(var, get_family_id());
if (n) {
e = n->get_expr();
bit = nbit;
}
}
}
if (v == null_theory_var && !th)
return;
if (v == null_theory_var && th->get_family_id() != bv.get_fid())
return;
if (v == null_theory_var) {
// it is not a registered boolean value but it is a bitvector
auto registered_bv = ((theory_bv*) th)->get_bv_with_theory(var, get_family_id());
if (!registered_bv.first)
// there is no registered bv associated with the bit
return;
original_enode = registered_bv.first;
original_bit = registered_bv.second;
v = original_enode->get_th_var(get_family_id());
}
// call the registered callback
unsigned new_bit = original_bit;
force_push();
expr *e = var2expr(v);
m_decide_eh(m_user_context, this, e, new_bit, is_pos);
m_decide_eh(m_user_context, this, e, bit, is_pos);
bool_var new_var;
if (!get_case_split(new_var, is_pos) || new_var == var)
// The user did not interfere
return;
TRACE(user_propagate,
tout << "decide: " << ctx.bool_var2expr(var) << " -> " << ctx.bool_var2expr(new_var) << "\n");
var = new_var;
// check if the new variable is unassigned
if (ctx.get_assignment(var) != l_undef)
throw default_exception("expression in \"decide\" is already assigned");

85
src/solver/preferred_value_propagator.h Normal file
View file

@ -0,0 +1,85 @@
/*++
Copyright (c) 2025 Microsoft Corporation
Module Name:
preferred_value_propagator.h
Abstract:
Specialized propagator for preferred values
Author:
Nikolaj Bjorner (nbjorner) 10-2-2025
Notes:
--*/
#pragma once
#include "tactic/user_propagator_base.h"
#include "util/trail.h"
class preferred_value_propagator {
ast_manager &m;
expr_ref_vector m_preferred;
unsigned m_qhead = 0;
trail_stack m_trail;
bool decide(user_propagator::callback& cb) {
if (m_qhead >= m_preferred.size())
return false;
m_trail.push(value_trail(m_qhead));
while (m_qhead < m_preferred.size()) {
expr *e = m_preferred.get(m_qhead);
bool is_not = m.is_not(e, e);
m_qhead++;
if (cb.next_split_cb(e, 0, is_not ? l_false : l_true))
return true;
}
return false;
}
public:
preferred_value_propagator(ast_manager &m) : m(m), m_preferred(m) {
push_eh = [](void * ctx, user_propagator::callback* cb) {
auto &p = *static_cast<preferred_value_propagator *>(ctx);
p.m_trail.push_scope();
};
pop_eh = [](void * ctx, user_propagator::callback* cb, unsigned n) -> void {
auto &p = *static_cast<preferred_value_propagator *>(ctx);
p.m_trail.pop_scope(n);
};
fresh_eh = [](void* ctx, ast_manager& dst, user_propagator::context_obj*& co) -> void* {
auto &p = *static_cast<preferred_value_propagator *>(ctx);
ast_translation tr(p.m, dst);
auto r = alloc(preferred_value_propagator, dst);
for (auto e : p.m_preferred)
r->set_preferred(tr(e));
return r;
};
decide_eh = [](void * ctx, user_propagator::callback * cb, expr *, unsigned, bool) -> bool {
auto &p = *static_cast<preferred_value_propagator *>(ctx);
return p.decide(*cb);
};
}
~preferred_value_propagator() = default;
void set_preferred(expr *e) {
m_preferred.push_back(e);
if (m_trail.get_num_scopes() > 0)
m_trail.push(push_back_vector(m_preferred));
}
void reset_preferred() {
if (m_trail.get_num_scopes() != 0)
throw default_exception("cannot reset preferred values in scoped context");
m_preferred.reset();
SASSERT(m_qhead == 0);
}
user_propagator::push_eh_t push_eh;
user_propagator::pop_eh_t pop_eh;
user_propagator::fresh_eh_t fresh_eh;
user_propagator::decide_eh_t decide_eh;
};

1
src/test/CMakeLists.txt
View file

@ -21,6 +21,7 @@ add_executable(test-z3
api_polynomial.cpp
api_pb.cpp
api_datalog.cpp
parametric_datatype.cpp
arith_rewriter.cpp
arith_simplifier_plugin.cpp
ast.cpp

1
src/test/main.cpp
View file

@ -179,6 +179,7 @@ int main(int argc, char ** argv) {
TST(api_polynomial);
TST(api_pb);
TST(api_datalog);
TST(parametric_datatype);
TST(cube_clause);
TST(old_interval);
TST(get_implied_equalities);

122
src/test/parametric_datatype.cpp Normal file
View file

@ -0,0 +1,122 @@
/*++
Copyright (c) 2025 Microsoft Corporation
Module Name:
parametric_datatype.cpp
Abstract:
Test parametric datatypes with type variables.
Author:
Copilot 2025-10-12
--*/
#include "api/z3.h"
#include "util/util.h"
#include <iostream>
/**
* Test Z3_mk_polymorphic_datatype API with explicit parameters.
*
* This test demonstrates the API that explicitly accepts type parameters.
*/
static void test_polymorphic_datatype_api() {
std::cout << "test_polymorphic_datatype_api\n";
Z3_config cfg = Z3_mk_config();
Z3_context ctx = Z3_mk_context(cfg);
Z3_del_config(cfg);
// Create type variables alpha and beta for polymorphic datatype
Z3_symbol alpha_sym = Z3_mk_string_symbol(ctx, "alpha");
Z3_symbol beta_sym = Z3_mk_string_symbol(ctx, "beta");
Z3_sort alpha = Z3_mk_type_variable(ctx, alpha_sym);
Z3_sort beta = Z3_mk_type_variable(ctx, beta_sym);
// Define parametric triple datatype with constructor mk-triple(first: alpha, second: beta, third: alpha)
Z3_symbol triple_name = Z3_mk_string_symbol(ctx, "triple");
Z3_symbol mk_triple_name = Z3_mk_string_symbol(ctx, "mk-triple");
Z3_symbol is_triple_name = Z3_mk_string_symbol(ctx, "is-triple");
Z3_symbol first_name = Z3_mk_string_symbol(ctx, "first");
Z3_symbol second_name = Z3_mk_string_symbol(ctx, "second");
Z3_symbol third_name = Z3_mk_string_symbol(ctx, "third");
Z3_symbol field_names[3] = {first_name, second_name, third_name};
Z3_sort field_sorts[3] = {alpha, beta, alpha}; // Use type variables
unsigned sort_refs[3] = {0, 0, 0}; // Not recursive references
Z3_constructor mk_triple_con = Z3_mk_constructor(
ctx, mk_triple_name, is_triple_name, 3, field_names, field_sorts, sort_refs
);
// Create the parametric datatype using Z3_mk_polymorphic_datatype
Z3_constructor constructors[1] = {mk_triple_con};
Z3_sort type_params[2] = {alpha, beta};
Z3_sort triple = Z3_mk_polymorphic_datatype(ctx, triple_name, 2, type_params, 1, constructors);
Z3_del_constructor(ctx, mk_triple_con);
std::cout << "Created parametric triple datatype using Z3_mk_polymorphic_datatype\n";
std::cout << "triple sort: " << Z3_sort_to_string(ctx, triple) << "\n";
// Now instantiate the datatype with concrete types
Z3_sort int_sort = Z3_mk_int_sort(ctx);
Z3_sort bool_sort = Z3_mk_bool_sort(ctx);
// Create (triple Int Bool)
Z3_sort params_int_bool[2] = {int_sort, bool_sort};
Z3_sort triple_int_bool = Z3_mk_datatype_sort(ctx, triple_name, 2, params_int_bool);
std::cout << "Instantiated triple with Int and Bool\n";
std::cout << "triple_int_bool: " << Z3_sort_to_string(ctx, triple_int_bool) << "\n";
// Get constructors and accessors from the instantiated datatype
Z3_func_decl mk_triple_int_bool = Z3_get_datatype_sort_constructor(ctx, triple_int_bool, 0);
Z3_func_decl first_int_bool = Z3_get_datatype_sort_constructor_accessor(ctx, triple_int_bool, 0, 0);
Z3_func_decl second_int_bool = Z3_get_datatype_sort_constructor_accessor(ctx, triple_int_bool, 0, 1);
Z3_func_decl third_int_bool = Z3_get_datatype_sort_constructor_accessor(ctx, triple_int_bool, 0, 2);
std::cout << "Got constructors and accessors from instantiated datatype\n";
// Create a constant t : (triple Int Bool)
Z3_symbol t_sym = Z3_mk_string_symbol(ctx, "t");
Z3_ast t = Z3_mk_const(ctx, t_sym, triple_int_bool);
// Create (first t) - should be Int
Z3_ast first_t = Z3_mk_app(ctx, first_int_bool, 1, &t);
// Create (third t) - should also be Int
Z3_ast third_t = Z3_mk_app(ctx, third_int_bool, 1, &t);
// Create the equality (= (first t) (third t))
Z3_ast eq = Z3_mk_eq(ctx, first_t, third_t);
std::cout << "Created term: " << Z3_ast_to_string(ctx, eq) << "\n";
// Verify the term was created successfully
ENSURE(eq != nullptr);
// Check that first_t and third_t have the same sort (Int)
Z3_sort first_t_sort = Z3_get_sort(ctx, first_t);
Z3_sort third_t_sort = Z3_get_sort(ctx, third_t);
std::cout << "Sort of (first t): " << Z3_sort_to_string(ctx, first_t_sort) << "\n";
std::cout << "Sort of (third t): " << Z3_sort_to_string(ctx, third_t_sort) << "\n";
// Both should be Int
ENSURE(Z3_is_eq_sort(ctx, first_t_sort, int_sort));
ENSURE(Z3_is_eq_sort(ctx, third_t_sort, int_sort));
std::cout << "test_polymorphic_datatype_api passed!\n";
Z3_del_context(ctx);
}
void tst_parametric_datatype() {
test_polymorphic_datatype_api();
}

1
src/util/mpz.cpp
View file

@ -2332,7 +2332,6 @@ bool mpz_manager<SYNCH>::is_perfect_square(mpz const & a, mpz & root) {
set(sq_lo, 1);
bool result = false;
bool first = true;
// lo*lo <= *this < hi*hi
// first find small interval lo*lo <= a <<= hi*hi

7
src/util/obj_hashtable.h
View file

@ -58,6 +58,13 @@ public:
struct key_data {
Key * m_key = nullptr;
Value m_value;
key_data() {}
key_data(Key *key) : m_key(key) {}
key_data(Key *k, Value const &v) : m_key(k), m_value(v) {}
key_data(key_data &&kd) noexcept = default;
key_data(key_data const &kd) noexcept = default;
key_data &operator=(key_data const &kd) = default;
key_data &operator=(key_data &&kd) = default;
Value const & get_value() const { return m_value; }
Key & get_key () const { return *m_key; }
unsigned hash() const { return m_key->hash(); }

2
src/util/rlimit.cpp
View file

@ -78,6 +78,8 @@ char const* reslimit::get_cancel_msg() const {
void reslimit::push_child(reslimit* r) {
lock_guard lock(*g_rlimit_mux);
r->m_limit = std::min(r->m_limit, m_limit - std::min(m_limit, m_count));
r->m_count = 0;
m_children.push_back(r);
}

11
src/util/warning.cpp
View file

@ -24,6 +24,10 @@ Revision History:
#include "util/buffer.h"
#include "util/vector.h"
#ifndef SINGLE_THREAD
#include <mutex>
#endif
#ifdef _WINDOWS
#if defined( __MINGW32__ ) && ( defined( __GNUG__ ) || defined( __clang__ ) )
#include <crtdbg.h>
@ -67,6 +71,10 @@ static bool g_use_std_stdout = false;
static std::ostream* g_error_stream = nullptr;
static std::ostream* g_warning_stream = nullptr;
#ifndef SINGLE_THREAD
static std::mutex g_warning_mutex;
#endif
void send_warnings_to_stdout(bool flag) {
g_use_std_stdout = flag;
}
@ -129,6 +137,9 @@ void print_msg(std::ostream * out, const char* prefix, const char* msg, va_list
void warning_msg(const char * msg, ...) {
if (g_warning_msgs) {
#ifndef SINGLE_THREAD
std::lock_guard<std::mutex> lock(g_warning_mutex);
#endif
va_list args;
va_start(args, msg);
print_msg(g_warning_stream, "WARNING: ", msg, args);

1
z3test

@ -1 +0,0 @@
Subproject commit 4186a4bf47b920d50671c396f904fe69e3e5c41d