Question

使用最新版本的IZ3并运行cpp_example时，我遇到了段错误。

重现：

克隆z3：git clone https://git01.codeplex.com/z3
切换到分支interp：git checkout interp
按照README
此外，构建cpp_example：cd build ; make cpp_example
运行cpp_example

结果：

unsat core example 3
[1]    30687 segmentation fault  ./cpp_example

如果我建立在cpp_example上，master对我有用。

我在2012年12月的一些邮件列表上看到一条消息，Z3的插值版本无法针对最新版本的Z3构建，但这是一项正在进行中的工作。

IZ3是否仍适用于Z3版本4？

如果是，是否有关于如何针对早期版本的Z3构建插值源的任何说明？（从：在哪里获取IZ3-3.2的源代码或其他什么？）

编辑：
操作系统：Linux __ 2.6.37.6-24-desktop #1 SMP PREEMPT __ i686 i686 i386 GNU/Linux

克++：

Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/i586-suse-linux/4.5/lto-wrapper
Target: i586-suse-linux
Configured with: ../configure --prefix=/usr --infodir=/usr/share/info --mandir=/usr/share/man --libdir=/usr/lib --libexecdir=/usr/lib --enable-languages=c,c++,objc,fortran,obj-c++,java,ada --enable-checking=release --with-gxx-include-dir=/usr/include/c++/4.5 --enable-ssp --disable-libssp --disable-plugin --with-bugurl=http://bugs.opensuse.org/ --with-pkgversion='SUSE Linux' --disable-libgcj --disable-libmudflap --with-slibdir=/lib --with-system-zlib --enable-__cxa_atexit --enable-libstdcxx-allocator=new --disable-libstdcxx-pch --enable-version-specific-runtime-libs --program-suffix=-4.5 --enable-linux-futex --without-system-libunwind --enable-gold --with-plugin-ld=/usr/bin/gold --with-arch-32=i586 --with-tune=generic --build=i586-suse-linux
Thread model: posix

Answer 1

正在崩溃的不满_核心 - 实例3（）。我将问题追溯到expr_substitution::find() proofs_enabled（）== false那里

但在rewriter_tpl<Config>::visit(expr * t, unsigned max_depth)， ProofGen == true，但是从调用'm_cfg.get_subst（t，new_t，new_t_pr）'，new_t_pr是未初始化的。

valgrind有什么要说的：

==26885== Conditional jump or move depends on uninitialised value(s)
==26885==    at 0x4C21802: bool rewriter_tpl<th_rewriter_cfg>::visit<true>(expr*, unsigned int) (ast.h:1562)
==26885==    by 0x4C21A77: void rewriter_tpl<th_rewriter_cfg>::process_app<true>(app*, rewriter_core::frame&) (rewriter_def.h:179)
==26885==    by 0x4C23303: void rewriter_tpl<th_rewriter_cfg>::resume_core<true>(obj_ref<expr, ast_manager>&, obj_ref<app, ast_manager>&) (rewriter_def.h:602)
==26885==    by 0x4B1EF9C: propagate_values_tactic::imp::operator()(ref<goal> const&, sref_buffer<goal, 16u>&, ref<model_converter>&, ref<proof_converter>&, obj_ref<dependency_manager<ast_manager::expr_dependency_config>::dependency, ast_manager>&) (propagate_values_tactic.cpp:128)
==26885==    by 0x4B21591: propagate_values_tactic::operator()(ref<goal> const&, sref_buffer<goal, 16u>&, ref<model_converter>&, ref<proof_converter>&, obj_ref<dependency_manager<ast_manager::expr_dependency_config>::dependency, ast_manager>&) (propagate_values_tactic.cpp:249)
==26885==    by 0x4B8BA9A: cleanup_tactical::operator()(ref<goal> const&, sref_buffer<goal, 16u>&, ref<model_converter>&, ref<proof_converter>&, obj_ref<dependency_manager<ast_manager::expr_dependency_config>::dependency, ast_manager>&) (tactical.cpp:1192)
==26885==    by 0x4B8ED2D: and_then_tactical::operator()(ref<goal> const&, sref_buffer<goal, 16u>&, ref<model_converter>&, ref<proof_converter>&, obj_ref<dependency_manager<ast_manager::expr_dependency_config>::dependency, ast_manager>&) (tactical.cpp:157)
==26885==    by 0x4B90914: and_then_tactical::operator()(ref<goal> const&, sref_buffer<goal, 16u>&, ref<model_converter>&, ref<proof_converter>&, obj_ref<dependency_manager<ast_manager::expr_dependency_config>::dependency, ast_manager>&) (tactical.cpp:170)
==26885==    by 0x4B8ED2D: and_then_tactical::operator()(ref<goal> const&, sref_buffer<goal, 16u>&, ref<model_converter>&, ref<proof_converter>&, obj_ref<dependency_manager<ast_manager::expr_dependency_config>::dependency, ast_manager>&) (tactical.cpp:157)
==26885==    by 0x4B8ED2D: and_then_tactical::operator()(ref<goal> const&, sref_buffer<goal, 16u>&, ref<model_converter>&, ref<proof_converter>&, obj_ref<dependency_manager<ast_manager::expr_dependency_config>::dependency, ast_manager>&) (tactical.cpp:157)
==26885==    by 0x4B90914: and_then_tactical::operator()(ref<goal> const&, sref_buffer<goal, 16u>&, ref<model_converter>&, ref<proof_converter>&, obj_ref<dependency_manager<ast_manager::expr_dependency_config>::dependency, ast_manager>&) (tactical.cpp:170)
==26885==    by 0x4B94C1A: exec(tactic&, ref<goal> const&, sref_buffer<goal, 16u>&, ref<model_converter>&, ref<proof_converter>&, obj_ref<dependency_manager<ast_manager::expr_dependency_config>::dependency, ast_manager>&) (tactic.cpp:179)

IZ3 cpp_example分段错误

1 个答案: