None in codegen_cprover_gotoc/codegen/statement.rs

[matthiaskrgr]

I tried this code:

#[kani::proof]
fn main() {
    let f: fn() -> ! = || std::process::exit(0);
    f();
}

using the following command line invocation:

kani file.rs

with Kani version:
kani 0.29.0
I expected to see this happen: explanation

Instead, this happened: explanation

thread 'rustc' panicked at 'called `Option::unwrap()` on a `None` value', kani-compiler/src/codegen_cprover_gotoc/codegen/statement.rs:586:73
stack backtrace:
   0:     0x7f1c7b368cc3 - std::backtrace_rs::backtrace::libunwind::trace::h6dd260ccf76e2a16
                               at /rustc/f4956053816439a5884cb2ad1247835858f92218/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f1c7b368cc3 - std::backtrace_rs::backtrace::trace_unsynchronized::h60e795a392c2d181
                               at /rustc/f4956053816439a5884cb2ad1247835858f92218/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f1c7b368cc3 - std::sys_common::backtrace::_print_fmt::hb92bc719d8e89e18
                               at /rustc/f4956053816439a5884cb2ad1247835858f92218/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7f1c7b368cc3 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h433d7296fbd4df36
                               at /rustc/f4956053816439a5884cb2ad1247835858f92218/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f1c7b3c9c0f - core::fmt::rt::Argument::fmt::hee863a126433a5fe
                               at /rustc/f4956053816439a5884cb2ad1247835858f92218/library/core/src/fmt/rt.rs:138:9
   5:     0x7f1c7b3c9c0f - core::fmt::write::hecf019f127565c17
                               at /rustc/f4956053816439a5884cb2ad1247835858f92218/library/core/src/fmt/mod.rs:1105:21
   6:     0x7f1c7b35bd91 - std::io::Write::write_fmt::h4fdee205f020a023
                               at /rustc/f4956053816439a5884cb2ad1247835858f92218/library/std/src/io/mod.rs:1712:15
   7:     0x7f1c7b368ad5 - std::sys_common::backtrace::_print::h63f1eb292c01c01d
                               at /rustc/f4956053816439a5884cb2ad1247835858f92218/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7f1c7b368ad5 - std::sys_common::backtrace::print::h29fa6d106f41082b
                               at /rustc/f4956053816439a5884cb2ad1247835858f92218/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7f1c7b36b697 - std::panicking::default_hook::{{closure}}::h24c419639c3568dd
  10:     0x7f1c7b36b485 - std::panicking::default_hook::hd5faae45a4c2ae6b
                               at /rustc/f4956053816439a5884cb2ad1247835858f92218/library/std/src/panicking.rs:288:9
  11:     0x564149948dfd - kani_compiler::session::PANIC_HOOK::{{closure}}::{{closure}}::h62fc73136c5344f5
  12:     0x564149975d83 - kani_compiler::codegen_cprover_gotoc::utils::debug::DEFAULT_HOOK::{{closure}}::{{closure}}::he03976a598c31555
  13:     0x7f1c7b36bdd5 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h8fd551c79732d109
                               at /rustc/f4956053816439a5884cb2ad1247835858f92218/library/alloc/src/boxed.rs:1976:9
  14:     0x7f1c7b36bdd5 - std::panicking::rust_panic_with_hook::hff0f13fd32920cda
                               at /rustc/f4956053816439a5884cb2ad1247835858f92218/library/std/src/panicking.rs:695:13
  15:     0x7f1c7b36bb02 - std::panicking::begin_panic_handler::{{closure}}::h4b94c172e12e7b79
                               at /rustc/f4956053816439a5884cb2ad1247835858f92218/library/std/src/panicking.rs:580:13
  16:     0x7f1c7b369106 - std::sys_common::backtrace::__rust_end_short_backtrace::h0d54fda82a2d0073
                               at /rustc/f4956053816439a5884cb2ad1247835858f92218/library/std/src/sys_common/backtrace.rs:150:18
  17:     0x7f1c7b36b8a2 - rust_begin_unwind
                               at /rustc/f4956053816439a5884cb2ad1247835858f92218/library/std/src/panicking.rs:578:5
  18:     0x7f1c7b3c5eb3 - core::panicking::panic_fmt::h423e755c13523a61
                               at /rustc/f4956053816439a5884cb2ad1247835858f92218/library/core/src/panicking.rs:67:14
  19:     0x7f1c7b3c5f4d - core::panicking::panic::ha60b73a9d89a544c
                               at /rustc/f4956053816439a5884cb2ad1247835858f92218/library/core/src/panicking.rs:117:5
  20:     0x5641498f5a44 - kani_compiler::codegen_cprover_gotoc::codegen::statement::<impl kani_compiler::codegen_cprover_gotoc::context::goto_ctx::GotocCtx>::codegen_terminator::hdccc300bfe0c600c
  21:     0x5641499070a1 - kani_compiler::codegen_cprover_gotoc::utils::debug::<impl kani_compiler::codegen_cprover_gotoc::context::goto_ctx::GotocCtx>::call_with_panic_debug_info::h976e66498994fa63
  22:     0x56414993173e - kani_compiler::codegen_cprover_gotoc::compiler_interface::GotocCodegenBackend::codegen_items::h72b866e5cefa4cb6
  23:     0x5641499356d1 - <kani_compiler::codegen_cprover_gotoc::compiler_interface::GotocCodegenBackend as rustc_codegen_ssa::traits::backend::CodegenBackend>::codegen_crate::hd63a249ce3b650de
  24:     0x7f1c7d7e4e26 - rustc_interface[bc622c2a0f547140]::passes::start_codegen
  25:     0x7f1c7d7e2314 - <rustc_middle[913649502f287e96]::ty::context::GlobalCtxt>::enter::<<rustc_interface[bc622c2a0f547140]::queries::Queries>::ongoing_codegen::{closure#0}::{closure#0}, core[7ab4a128a7734c10]::result::Result<alloc[ab6e9888d17cae42]::boxed::Box<dyn core[7ab4a128a7734c10]::any::Any>, rustc_span[14f600a439c86087]::ErrorGuaranteed>>
  26:     0x7f1c7d7e1098 - <rustc_interface[bc622c2a0f547140]::queries::Queries>::ongoing_codegen
  27:     0x7f1c7d7e087b - <rustc_interface[bc622c2a0f547140]::interface::Compiler>::enter::<rustc_driver_impl[91ccd4f5692da35d]::run_compiler::{closure#1}::{closure#2}, core[7ab4a128a7734c10]::result::Result<core[7ab4a128a7734c10]::option::Option<rustc_interface[bc622c2a0f547140]::queries::Linker>, rustc_span[14f600a439c86087]::ErrorGuaranteed>>
  28:     0x7f1c7d7de86f - rustc_span[14f600a439c86087]::set_source_map::<core[7ab4a128a7734c10]::result::Result<(), rustc_span[14f600a439c86087]::ErrorGuaranteed>, rustc_interface[bc622c2a0f547140]::interface::run_compiler<core[7ab4a128a7734c10]::result::Result<(), rustc_span[14f600a439c86087]::ErrorGuaranteed>, rustc_driver_impl[91ccd4f5692da35d]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  29:     0x7f1c7d7ddf00 - std[f87cae68a756700d]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[bc622c2a0f547140]::util::run_in_thread_pool_with_globals<rustc_interface[bc622c2a0f547140]::interface::run_compiler<core[7ab4a128a7734c10]::result::Result<(), rustc_span[14f600a439c86087]::ErrorGuaranteed>, rustc_driver_impl[91ccd4f5692da35d]::run_compiler::{closure#1}>::{closure#0}, core[7ab4a128a7734c10]::result::Result<(), rustc_span[14f600a439c86087]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[7ab4a128a7734c10]::result::Result<(), rustc_span[14f600a439c86087]::ErrorGuaranteed>>
  30:     0x7f1c7d7dd821 - <<std[f87cae68a756700d]::thread::Builder>::spawn_unchecked_<rustc_interface[bc622c2a0f547140]::util::run_in_thread_pool_with_globals<rustc_interface[bc622c2a0f547140]::interface::run_compiler<core[7ab4a128a7734c10]::result::Result<(), rustc_span[14f600a439c86087]::ErrorGuaranteed>, rustc_driver_impl[91ccd4f5692da35d]::run_compiler::{closure#1}>::{closure#0}, core[7ab4a128a7734c10]::result::Result<(), rustc_span[14f600a439c86087]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[7ab4a128a7734c10]::result::Result<(), rustc_span[14f600a439c86087]::ErrorGuaranteed>>::{closure#1} as core[7ab4a128a7734c10]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  31:     0x7f1c7b376305 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hdbaea59c5dcd35ae
                               at /rustc/f4956053816439a5884cb2ad1247835858f92218/library/alloc/src/boxed.rs:1962:9
  32:     0x7f1c7b376305 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hedf781cff528734a
                               at /rustc/f4956053816439a5884cb2ad1247835858f92218/library/alloc/src/boxed.rs:1962:9
  33:     0x7f1c7b376305 - std::sys::unix::thread::Thread::new::thread_start::h8db1b8acf05cf216
                               at /rustc/f4956053816439a5884cb2ad1247835858f92218/library/std/src/sys/unix/thread.rs:108:17
  34:     0x7f1c7b028bb5 - <unknown>
  35:     0x7f1c7b0aad90 - <unknown>
  36:                0x0 - <unknown>

Kani unexpectedly panicked during compilation.
Please file an issue here: https://github.com/model-checking/kani/issues/new?labels=bug&template=bug_report.md

[Kani] current codegen item: codegen_function: main
main
[Kani] current codegen location: Loc { file: "/home/matthias/vcs/github/rust/src/tools/miri/tests/pass/issues/issue-miri-1075.rs", function: None, start_line: 2, start_col: Some(1), end_line: 2, end_col: Some(10) }
error: /home/matthias/.kani/kani-0.29.0/bin/kani-compiler exited with status exit status: 101

[matthiaskrgr]

Still crashing with 0.40