# Internal Error (/oracle/jdk_jdk/open/src/hotspot/share/opto/loopnode.cpp:4262), pid=32646, tid=32658
# Error: ShouldNotReachHere()
#
# JRE version: OpenJDK Runtime Environment (15.0) (fastdebug build 15-internal+0-adhoc.tobias.open)
# Java VM: OpenJDK 64-Bit Server VM (fastdebug 15-internal+0-adhoc.tobias.open, mixed mode, tiered, compressed oops, g1 gc, linux-amd64)
# Problematic frame:
# V [libjvm.so+0x104975c] PhaseIdealLoop::verify_strip_mined_scheduling(Node*, Node*)+0x37c

Current CompileTask:
C2: 418 380 4 Main::getPermutations (84 bytes)

Stack: [0x00007fad2e5a5000,0x00007fad2e6a6000], sp=0x00007fad2e6a0270, free space=1004k
Native frames: (J=compiled Java code, A=aot compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x104975c] PhaseIdealLoop::verify_strip_mined_scheduling(Node*, Node*)+0x37c
V [libjvm.so+0x104cc02] PhaseIdealLoop::build_loop_late_post_work(Node*, bool)+0x362
V [libjvm.so+0x104d096] PhaseIdealLoop::build_loop_late(VectorSet&, Node_List&, Node_Stack&)+0xb6
V [libjvm.so+0x1051c75] PhaseIdealLoop::build_and_optimize(LoopOptsMode)+0x765
V [libjvm.so+0x85d0c1] PhaseIdealLoop::optimize(PhaseIterGVN&, LoopOptsMode)+0x2c1
V [libjvm.so+0x859949] Compile::Optimize()+0x3a9
V [libjvm.so+0x85b7a5] Compile::Compile(ciEnv*, C2Compiler*, ciMethod*, int, bool, bool, bool, DirectiveSet*)+0x1215
V [libjvm.so+0x6c9b60] C2Compiler::compile_method(ciEnv*, ciMethod*, int, DirectiveSet*)+0x110
V [libjvm.so+0x867c6b] CompileBroker::invoke_compiler_on_method(CompileTask*)+0x2db
V [libjvm.so+0x868c48] CompileBroker::compiler_thread_loop()+0x4d8
V [libjvm.so+0x1564df6] JavaThread::thread_main_inner()+0x206
V [libjvm.so+0x1569c36] Thread::call_run()+0xf6
V [libjvm.so+0x1284cce] thread_native_entry(Thread*)+0x10e