Negative coverage: prove_assignable / subtype / premise prove_sub_type(env, assumptions, state, a, b) => state
Premise at line 955. Observed failure causes: failed_judgment.
subtype| Line | Coverage | Source |
|---|---|---|
| 955 | 9 | (prove_sub_type(env, assumptions, state, a, b) => state) |
| ──────── ("subtype") | ||
| 957 | 67 | (prove_assignable(env, assumptions, state, a, b) => state) |
9 tests failed proving this premise:
Source location: tests/borrowck.rs:2170
fn foo<'a, 'b>(v1: &'a u32) -> &'b u32 {
exists<'r0> {
let v2: &'r0 u32 = v1;
return v2;
}
}
Failed proof tree
check_all_crates failedmod.rs:41rule "check all prefixes"mod.rs:53check_crate failedmod.rs:60rule "check crate"mod.rs:73check_crate_item failedmod.rs:163rule "free fn"mod.rs:191check_free_fn failedfns.rs:14rule "check free fn"fns.rs:24check_fn failedfns.rs:31rule "check fn"fns.rs:55check_fn_body failedfns.rs:62rule "expr fn body"fns.rs:90borrow_check failednll.rs:126rule "borrow_check"nll.rs:137borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "exists"nll.rs:298borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "return"nll.rs:281prove_assignable failednll.rs:937rule "subtype"nll.rs:955verify_universal_outlives failedoutlives.rs:8rule "verify_universal_outlives"outlives.rs:20only_assumed_outlives failedoutlives.rs:27rule "universal lifetime"outlives.rs:49can_outlive failedoutlives.rs:56rule "universal target"outlives.rs:81prove failedoutlives.rs:81ruleoutlives.rs:81prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "assumption - relation"prove_wc.rs:56prove_via failedprove_via.rs:9
rule "outlives"prove_wc.rs:154prove_outlives failedprove_outlives.rs:8
rule "return"nll.rs:281prove_assignable failednll.rs:937rule "subtype"nll.rs:955verify_universal_outlives failedoutlives.rs:8rule "verify_universal_outlives"outlives.rs:20only_assumed_outlives failedoutlives.rs:27rule "universal lifetime"outlives.rs:49can_outlive failedoutlives.rs:56rule "universal target"outlives.rs:81prove failedoutlives.rs:81ruleoutlives.rs:81prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "assumption - relation"prove_wc.rs:56prove_via failedprove_via.rs:9
rule "outlives"prove_wc.rs:154prove_outlives failedprove_outlives.rs:8
Source location: tests/borrowck.rs:2192
fn foo<'a, 'b>(v1: &'a u32, v2: &'b u32) -> () {
let output: &'b u32 = v2;
loop {
output = v1;
}
}
Failed proof tree
check_all_crates failedmod.rs:41rule "check all prefixes"mod.rs:53check_crate failedmod.rs:60rule "check crate"mod.rs:73check_crate_item failedmod.rs:163rule "free fn"mod.rs:191check_free_fn failedfns.rs:14rule "check free fn"fns.rs:24check_fn failedfns.rs:31rule "check fn"fns.rs:55check_fn_body failedfns.rs:62rule "expr fn body"fns.rs:90borrow_check failednll.rs:126rule "borrow_check"nll.rs:137borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "loop"nll.rs:246borrow_check_loop failednll.rs:535rule "fixed-point"nll.rs:555borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "expr"nll.rs:229borrow_check_expr failednll.rs:340rule "assign"nll.rs:370prove_assignable failednll.rs:937rule "subtype"nll.rs:955verify_universal_outlives failedoutlives.rs:8rule "verify_universal_outlives"outlives.rs:20only_assumed_outlives failedoutlives.rs:27rule "universal lifetime"outlives.rs:49can_outlive failedoutlives.rs:56rule "universal target"outlives.rs:81prove failedoutlives.rs:81ruleoutlives.rs:81prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "outlives"prove_wc.rs:154prove_outlives failedprove_outlives.rs:8
rule "assign"nll.rs:370prove_assignable failednll.rs:937rule "subtype"nll.rs:955verify_universal_outlives failedoutlives.rs:8rule "verify_universal_outlives"outlives.rs:20only_assumed_outlives failedoutlives.rs:27rule "universal lifetime"outlives.rs:49can_outlive failedoutlives.rs:56rule "universal target"outlives.rs:81prove failedoutlives.rs:81ruleoutlives.rs:81prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "outlives"prove_wc.rs:154prove_outlives failedprove_outlives.rs:8
rule "loop"nll.rs:547borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "expr"nll.rs:229borrow_check_expr failednll.rs:340rule "assign"nll.rs:370prove_assignable failednll.rs:937rule "subtype"nll.rs:955verify_universal_outlives failedoutlives.rs:8rule "verify_universal_outlives"outlives.rs:20only_assumed_outlives failedoutlives.rs:27rule "universal lifetime"outlives.rs:49can_outlive failedoutlives.rs:56rule "universal target"outlives.rs:81prove failedoutlives.rs:81ruleoutlives.rs:81prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "outlives"prove_wc.rs:154prove_outlives failedprove_outlives.rs:8
rule "assign"nll.rs:370prove_assignable failednll.rs:937rule "subtype"nll.rs:955verify_universal_outlives failedoutlives.rs:8rule "verify_universal_outlives"outlives.rs:20only_assumed_outlives failedoutlives.rs:27rule "universal lifetime"outlives.rs:49can_outlive failedoutlives.rs:56rule "universal target"outlives.rs:81prove failedoutlives.rs:81ruleoutlives.rs:81prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "outlives"prove_wc.rs:154prove_outlives failedprove_outlives.rs:8
Source location: tests/borrowck.rs:2249
fn foo<'a, 'b, 'c>(v1: &'a u32) -> &'c u32
where
'a: 'b,
{
return v1;
}
Failed proof tree
check_all_crates failedmod.rs:41rule "check all prefixes"mod.rs:53check_crate failedmod.rs:60rule "check crate"mod.rs:73check_crate_item failedmod.rs:163rule "free fn"mod.rs:191check_free_fn failedfns.rs:14rule "check free fn"fns.rs:24check_fn failedfns.rs:31rule "check fn"fns.rs:55check_fn_body failedfns.rs:62rule "expr fn body"fns.rs:90borrow_check failednll.rs:126rule "borrow_check"nll.rs:137borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "return"nll.rs:281prove_assignable failednll.rs:937rule "subtype"nll.rs:955verify_universal_outlives failedoutlives.rs:8rule "verify_universal_outlives"outlives.rs:20only_assumed_outlives failedoutlives.rs:27rule "universal lifetime"outlives.rs:49can_outlive failedoutlives.rs:56rule "universal target"outlives.rs:81prove failedoutlives.rs:81ruleoutlives.rs:81prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "assumption - relation"prove_wc.rs:56prove_via failedprove_via.rs:9
rule "outlives"prove_wc.rs:154prove_outlives failedprove_outlives.rs:8
rule "return"nll.rs:281prove_assignable failednll.rs:937rule "subtype"nll.rs:955verify_universal_outlives failedoutlives.rs:8rule "verify_universal_outlives"outlives.rs:20only_assumed_outlives failedoutlives.rs:27rule "universal lifetime"outlives.rs:49can_outlive failedoutlives.rs:56rule "universal target"outlives.rs:81prove failedoutlives.rs:81ruleoutlives.rs:81prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "assumption - relation"prove_wc.rs:56prove_via failedprove_via.rs:9
rule "outlives"prove_wc.rs:154prove_outlives failedprove_outlives.rs:8
Source location: tests/borrowck.rs:2881
fn foo<'a, 'b>(a: &'a u32) -> &'b u32 {
let r: &'b u32 = identity::<&'b u32>(a);
return r;
}
Failed proof tree
check_all_crates failedmod.rs:41rule "check all prefixes"mod.rs:53check_crate failedmod.rs:60rule "check crate"mod.rs:73check_crate_item failedmod.rs:163rule "free fn"mod.rs:191check_free_fn failedfns.rs:14rule "check free fn"fns.rs:24check_fn failedfns.rs:31rule "check fn"fns.rs:55check_fn_body failedfns.rs:62rule "expr fn body"fns.rs:90borrow_check failednll.rs:126rule "borrow_check"nll.rs:137borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "let"nll.rs:193borrow_check_expr_has_ty failednll.rs:319rule "block"nll.rs:332borrow_check_expr failednll.rs:340rule "call"nll.rs:411borrow_check_expr_has_ty failednll.rs:319rule "block"nll.rs:333prove_assignable failednll.rs:937rule "subtype"nll.rs:955verify_universal_outlives failedoutlives.rs:8rule "verify_universal_outlives"outlives.rs:20only_assumed_outlives failedoutlives.rs:27rule "universal lifetime"outlives.rs:49can_outlive failedoutlives.rs:56rule "universal target"outlives.rs:81prove failedoutlives.rs:81ruleoutlives.rs:81prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "outlives"prove_wc.rs:154prove_outlives failedprove_outlives.rs:8
rule "block"nll.rs:333prove_assignable failednll.rs:937rule "subtype"nll.rs:955verify_universal_outlives failedoutlives.rs:8rule "verify_universal_outlives"outlives.rs:20only_assumed_outlives failedoutlives.rs:27rule "universal lifetime"outlives.rs:49can_outlive failedoutlives.rs:56rule "universal target"outlives.rs:81prove failedoutlives.rs:81ruleoutlives.rs:81prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "outlives"prove_wc.rs:154prove_outlives failedprove_outlives.rs:8
Source location: tests/mir_typeck.rs:147
fn foo (b: bool) -> u32 {
if b {
return 1 _ u32;
} else {
return false;
}
}
Failed proof tree
check_all_crates failedmod.rs:41rule "check all prefixes"mod.rs:53check_crate failedmod.rs:60rule "check crate"mod.rs:73check_crate_item failedmod.rs:163rule "free fn"mod.rs:191check_free_fn failedfns.rs:14rule "check free fn"fns.rs:24check_fn failedfns.rs:31rule "check fn"fns.rs:55check_fn_body failedfns.rs:62rule "expr fn body"fns.rs:90borrow_check failednll.rs:126rule "borrow_check"nll.rs:137borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "if"nll.rs:220borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "return"nll.rs:281prove_assignable failednll.rs:937rule "subtype"nll.rs:955prove failedfunction.rs:250rulefunction.rs:250prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "subtype"prove_wc.rs:133prove_sub failedprove_sub.rs:13rule "normalize-l"prove_sub.rs:28prove_normalize failedprove_normalize.rs:19
rule "normalize-r"prove_sub.rs:35prove_normalize failedprove_normalize.rs:19
rule "if"nll.rs:220borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "return"nll.rs:281prove_assignable failednll.rs:937rule "subtype"nll.rs:955prove failedfunction.rs:250rulefunction.rs:250prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "subtype"prove_wc.rs:133prove_sub failedprove_sub.rs:13rule "normalize-l"prove_sub.rs:28prove_normalize failedprove_normalize.rs:19
rule "normalize-r"prove_sub.rs:35prove_normalize failedprove_normalize.rs:19
Source location: tests/mir_typeck.rs:300
fn bar(v1: ()) -> () {
let v0: () = foo(v1);
return v0;
}
Failed proof tree
check_all_crates failedmod.rs:41rule "check all prefixes"mod.rs:53check_crate failedmod.rs:60rule "check crate"mod.rs:73check_crate_item failedmod.rs:163rule "free fn"mod.rs:191check_free_fn failedfns.rs:14rule "check free fn"fns.rs:24check_fn failedfns.rs:31rule "check fn"fns.rs:55check_fn_body failedfns.rs:62rule "expr fn body"fns.rs:90borrow_check failednll.rs:126rule "borrow_check"nll.rs:137borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "let"nll.rs:193borrow_check_expr_has_ty failednll.rs:319rule "block"nll.rs:332borrow_check_expr failednll.rs:340rule "call"nll.rs:411borrow_check_expr_has_ty failednll.rs:319rule "block"nll.rs:333prove_assignable failednll.rs:937rule "subtype"nll.rs:955prove failedfunction.rs:250rulefunction.rs:250prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "subtype"prove_wc.rs:133prove_sub failedprove_sub.rs:13rule "normalize-l"prove_sub.rs:28prove_normalize failedprove_normalize.rs:19
rule "normalize-r"prove_sub.rs:35prove_normalize failedprove_normalize.rs:19
rule "block"nll.rs:333prove_assignable failednll.rs:937rule "subtype"nll.rs:955prove failedfunction.rs:250rulefunction.rs:250prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "subtype"prove_wc.rs:133prove_sub failedprove_sub.rs:13rule "normalize-l"prove_sub.rs:28prove_normalize failedprove_normalize.rs:19
rule "normalize-r"prove_sub.rs:35prove_normalize failedprove_normalize.rs:19
Source location: tests/mir_typeck.rs:360
fn bar(v1: u32) -> u32 {
let v0: u32 = identity::<bool>(v1);
return v0;
}
Failed proof tree
check_all_crates failedmod.rs:41rule "check all prefixes"mod.rs:53check_crate failedmod.rs:60rule "check crate"mod.rs:73check_crate_item failedmod.rs:163rule "free fn"mod.rs:191check_free_fn failedfns.rs:14rule "check free fn"fns.rs:24check_fn failedfns.rs:31rule "check fn"fns.rs:55check_fn_body failedfns.rs:62rule "expr fn body"fns.rs:90borrow_check failednll.rs:126rule "borrow_check"nll.rs:137borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "let"nll.rs:193borrow_check_expr_has_ty failednll.rs:319rule "block"nll.rs:332borrow_check_expr failednll.rs:340rule "call"nll.rs:411borrow_check_expr_has_ty failednll.rs:319rule "block"nll.rs:333prove_assignable failednll.rs:937rule "subtype"nll.rs:955prove failedfunction.rs:250rulefunction.rs:250prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "subtype"prove_wc.rs:133prove_sub failedprove_sub.rs:13rule "normalize-l"prove_sub.rs:28prove_normalize failedprove_normalize.rs:19
rule "normalize-r"prove_sub.rs:35prove_normalize failedprove_normalize.rs:19
rule "block"nll.rs:333prove_assignable failednll.rs:937rule "subtype"nll.rs:955prove failedfunction.rs:250rulefunction.rs:250prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "subtype"prove_wc.rs:133prove_sub failedprove_sub.rs:13rule "normalize-l"prove_sub.rs:28prove_normalize failedprove_normalize.rs:19
rule "normalize-r"prove_sub.rs:35prove_normalize failedprove_normalize.rs:19
Source location: tests/mir_typeck.rs:421
fn foo (v1: ()) -> u32 {
return v1;
}
Failed proof tree
check_all_crates failedmod.rs:41rule "check all prefixes"mod.rs:53check_crate failedmod.rs:60rule "check crate"mod.rs:73check_crate_item failedmod.rs:163rule "free fn"mod.rs:191check_free_fn failedfns.rs:14rule "check free fn"fns.rs:24check_fn failedfns.rs:31rule "check fn"fns.rs:55check_fn_body failedfns.rs:62rule "expr fn body"fns.rs:90borrow_check failednll.rs:126rule "borrow_check"nll.rs:137borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "return"nll.rs:281prove_assignable failednll.rs:937rule "subtype"nll.rs:955prove failedfunction.rs:250rulefunction.rs:250prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "subtype"prove_wc.rs:133prove_sub failedprove_sub.rs:13rule "normalize-l"prove_sub.rs:28prove_normalize failedprove_normalize.rs:19
rule "normalize-r"prove_sub.rs:35prove_normalize failedprove_normalize.rs:19
rule "return"nll.rs:281prove_assignable failednll.rs:937rule "subtype"nll.rs:955prove failedfunction.rs:250rulefunction.rs:250prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "subtype"prove_wc.rs:133prove_sub failedprove_sub.rs:13rule "normalize-l"prove_sub.rs:28prove_normalize failedprove_normalize.rs:19
rule "normalize-r"prove_sub.rs:35prove_normalize failedprove_normalize.rs:19
Source location: tests/mir_typeck.rs:630
fn foo (v1: u32) -> u32 {
let v2: Dummy = Dummy { value: false };
return v1;
}
Failed proof tree
check_all_crates failedmod.rs:41rule "check all prefixes"mod.rs:53check_crate failedmod.rs:60rule "check crate"mod.rs:73check_crate_item failedmod.rs:163rule "free fn"mod.rs:191check_free_fn failedfns.rs:14rule "check free fn"fns.rs:24check_fn failedfns.rs:31rule "check fn"fns.rs:55check_fn_body failedfns.rs:62rule "expr fn body"fns.rs:90borrow_check failednll.rs:126rule "borrow_check"nll.rs:137borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "let"nll.rs:193borrow_check_expr_has_ty failednll.rs:319rule "block"nll.rs:332borrow_check_expr failednll.rs:340rule "struct"nll.rs:524borrow_check_expr_has_ty failednll.rs:319rule "block"nll.rs:333prove_assignable failednll.rs:937rule "subtype"nll.rs:955prove failedfunction.rs:250rulefunction.rs:250prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "subtype"prove_wc.rs:133prove_sub failedprove_sub.rs:13rule "normalize-l"prove_sub.rs:28prove_normalize failedprove_normalize.rs:19
rule "normalize-r"prove_sub.rs:35prove_normalize failedprove_normalize.rs:19