; LLVM IR from MinhasKamal/AlgorithmImplementations :: graph/maxFlow (MaxFlow)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ifstream" = type { %"class.std::basic_istream.base", %"class.std::basic_filebuf", %"class.std::basic_ios" }
%"class.std::basic_istream.base" = type { ptr, i64 }
%"class.std::basic_filebuf" = type { %"class.std::basic_streambuf", %union.pthread_mutex_t, %"class.std::__basic_file", i32, %struct.__mbstate_t, %struct.__mbstate_t, %struct.__mbstate_t, ptr, i64, i8, i8, i8, i8, ptr, ptr, i8, ptr, ptr, i64, ptr, ptr }
%"class.std::basic_streambuf" = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr, %"class.std::locale" }
%union.pthread_mutex_t = type { %struct.__pthread_mutex_s }
%struct.__pthread_mutex_s = type { i32, i32, i32, i32, i32, i16, i16, %struct.__pthread_internal_list }
%struct.__pthread_internal_list = type { ptr, ptr }
%"class.std::__basic_file" = type <{ ptr, i8, [7 x i8] }>
%struct.__mbstate_t = type { i32, %union.anon }
%union.anon = type { i32 }

@.str = external hidden unnamed_addr constant [18 x i8], align 1
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.1 = external hidden unnamed_addr constant [21 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [17 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca %"class.std::basic_ifstream", align 8
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 520, ptr %2) #8
  call void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEEC1Ev(ptr noundef nonnull align 8 dereferenceable(256) %2)
  invoke void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE4openEPKcSt13_Ios_Openmode(ptr noundef nonnull align 8 dereferenceable(256) %2, ptr noundef @.str, i32 noundef 8)
          to label %11 unwind label %17

11:                                               ; preds = %0
  %12 = invoke noundef zeroext i1 @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE7is_openEv(ptr noundef nonnull align 8 dereferenceable(256) %2)
          to label %13 unwind label %17

13:                                               ; preds = %11
  br i1 %12, label %21, label %14

14:                                               ; preds = %13
  %15 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.1)
          to label %16 unwind label %17

16:                                               ; preds = %14
  store i32 0, ptr %1, align 4
  store i32 1, ptr %5, align 4
  br label %106

17:                                               ; preds = %14, %11, %0
  %18 = landingpad { ptr, i32 }
          cleanup
  %19 = extractvalue { ptr, i32 } %18, 0
  store ptr %19, ptr %3, align 8
  %20 = extractvalue { ptr, i32 } %18, 1
  store i32 %20, ptr %4, align 4
  br label %108

21:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #8
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #8
  %22 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %2, ptr noundef nonnull align 4 dereferenceable(4) %6)
          to label %23 unwind label %37

23:                                               ; preds = %21
  %24 = load i32, ptr %6, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = call { i64, i1 } @llvm.umul.with.overflow.i64(i64 %25, i64 8)
  %27 = extractvalue { i64, i1 } %26, 1
  %28 = extractvalue { i64, i1 } %26, 0
  %29 = select i1 %27, i64 -1, i64 %28
  %30 = invoke noalias noundef nonnull ptr @_Znam(i64 noundef %29) #9
          to label %31 unwind label %37

31:                                               ; preds = %23
  store ptr %30, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #8
  store i32 0, ptr %8, align 4, !tbaa !5
  br label %32

32:                                               ; preds = %54, %31
  %33 = load i32, ptr %8, align 4, !tbaa !5
  %34 = load i32, ptr %6, align 4, !tbaa !5
  %35 = icmp slt i32 %33, %34
  br i1 %35, label %41, label %36

36:                                               ; preds = %32
  store i32 2, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #8
  br label %61

37:                                               ; preds = %102, %98, %96, %95, %23, %21
  %38 = landingpad { ptr, i32 }
          cleanup
  %39 = extractvalue { ptr, i32 } %38, 0
  store ptr %39, ptr %3, align 8
  %40 = extractvalue { ptr, i32 } %38, 1
  store i32 %40, ptr %4, align 4
  br label %105

41:                                               ; preds = %32
  %42 = load i32, ptr %6, align 4, !tbaa !5
  %43 = sext i32 %42 to i64
  %44 = call { i64, i1 } @llvm.umul.with.overflow.i64(i64 %43, i64 4)
  %45 = extractvalue { i64, i1 } %44, 1
  %46 = extractvalue { i64, i1 } %44, 0
  %47 = select i1 %45, i64 -1, i64 %46
  %48 = invoke noalias noundef nonnull ptr @_Znam(i64 noundef %47) #9
          to label %49 unwind label %57

49:                                               ; preds = %41
  %50 = load ptr, ptr %7, align 8, !tbaa !9
  %51 = load i32, ptr %8, align 4, !tbaa !5
  %52 = sext i32 %51 to i64
  %53 = getelementptr inbounds ptr, ptr %50, i64 %52
  store ptr %48, ptr %53, align 8, !tbaa !9
  br label %54

54:                                               ; preds = %49
  %55 = load i32, ptr %8, align 4, !tbaa !5
  %56 = add nsw i32 %55, 1
  store i32 %56, ptr %8, align 4, !tbaa !5
  br label %32, !llvm.loop !11

57:                                               ; preds = %41
  %58 = landingpad { ptr, i32 }
          cleanup
  %59 = extractvalue { ptr, i32 } %58, 0
  store ptr %59, ptr %3, align 8
  %60 = extractvalue { ptr, i32 } %58, 1
  store i32 %60, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #8
  br label %105

61:                                               ; preds = %36
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #8
  store i32 0, ptr %9, align 4, !tbaa !5
  br label %62

62:                                               ; preds = %92, %61
  %63 = load i32, ptr %9, align 4, !tbaa !5
  %64 = load i32, ptr %6, align 4, !tbaa !5
  %65 = icmp slt i32 %63, %64
  br i1 %65, label %67, label %66

66:                                               ; preds = %62
  store i32 5, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #8
  br label %95

67:                                               ; preds = %62
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #8
  store i32 0, ptr %10, align 4, !tbaa !5
  br label %68

68:                                               ; preds = %84, %67
  %69 = load i32, ptr %10, align 4, !tbaa !5
  %70 = load i32, ptr %6, align 4, !tbaa !5
  %71 = icmp slt i32 %69, %70
  br i1 %71, label %73, label %72

72:                                               ; preds = %68
  store i32 8, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #8
  br label %91

73:                                               ; preds = %68
  %74 = load ptr, ptr %7, align 8, !tbaa !9
  %75 = load i32, ptr %9, align 4, !tbaa !5
  %76 = sext i32 %75 to i64
  %77 = getelementptr inbounds ptr, ptr %74, i64 %76
  %78 = load ptr, ptr %77, align 8, !tbaa !9
  %79 = load i32, ptr %10, align 4, !tbaa !5
  %80 = sext i32 %79 to i64
  %81 = getelementptr inbounds i32, ptr %78, i64 %80
  %82 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %2, ptr noundef nonnull align 4 dereferenceable(4) %81)
          to label %83 unwind label %87

83:                                               ; preds = %73
  br label %84

84:                                               ; preds = %83
  %85 = load i32, ptr %10, align 4, !tbaa !5
  %86 = add nsw i32 %85, 1
  store i32 %86, ptr %10, align 4, !tbaa !5
  br label %68, !llvm.loop !13

87:                                               ; preds = %73
  %88 = landingpad { ptr, i32 }
          cleanup
  %89 = extractvalue { ptr, i32 } %88, 0
  store ptr %89, ptr %3, align 8
  %90 = extractvalue { ptr, i32 } %88, 1
  store i32 %90, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #8
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #8
  br label %105

91:                                               ; preds = %72
  br label %92

92:                                               ; preds = %91
  %93 = load i32, ptr %9, align 4, !tbaa !5
  %94 = add nsw i32 %93, 1
  store i32 %94, ptr %9, align 4, !tbaa !5
  br label %62, !llvm.loop !14

95:                                               ; preds = %66
  invoke void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE5closeEv(ptr noundef nonnull align 8 dereferenceable(256) %2)
          to label %96 unwind label %37

96:                                               ; preds = %95
  %97 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.2)
          to label %98 unwind label %37

98:                                               ; preds = %96
  %99 = load ptr, ptr %7, align 8, !tbaa !9
  %100 = load i32, ptr %6, align 4, !tbaa !5
  %101 = invoke noundef i32 @_Z13FordFulkersonPPiiii(ptr noundef %99, i32 noundef %100, i32 noundef 0, i32 noundef 5)
          to label %102 unwind label %37

102:                                              ; preds = %98
  %103 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %97, i32 noundef %101)
          to label %104 unwind label %37

104:                                              ; preds = %102
  store i32 0, ptr %1, align 4
  store i32 1, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #8
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #8
  br label %106

105:                                              ; preds = %87, %57, %37
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #8
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #8
  br label %108

106:                                              ; preds = %104, %16
  call void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEED1Ev(ptr noundef nonnull align 8 dereferenceable(256) %2) #8
  call void @llvm.lifetime.end.p0(i64 520, ptr %2) #8
  %107 = load i32, ptr %1, align 4
  ret i32 %107

108:                                              ; preds = %105, %17
  call void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEED1Ev(ptr noundef nonnull align 8 dereferenceable(256) %2) #8
  call void @llvm.lifetime.end.p0(i64 520, ptr %2) #8
  br label %109

109:                                              ; preds = %108
  %110 = load ptr, ptr %3, align 8
  %111 = load i32, ptr %4, align 4
  %112 = insertvalue { ptr, i32 } poison, ptr %110, 0
  %113 = insertvalue { ptr, i32 } %112, i32 %111, 1
  resume { ptr, i32 } %113
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress uwtable
declare void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEEC1Ev(ptr noundef nonnull align 8 dereferenceable(256)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE4openEPKcSt13_Ios_Openmode(ptr noundef nonnull align 8 dereferenceable(256), ptr noundef, i32 noundef) #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare noundef zeroext i1 @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE7is_openEv(ptr noundef nonnull align 8 dereferenceable(256)) #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #4

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #5

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare { i64, i1 } @llvm.umul.with.overflow.i64(i64, i64) #6

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znam(i64 noundef) #7

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress uwtable
declare void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE5closeEv(ptr noundef nonnull align 8 dereferenceable(256)) #2 align 2

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #5

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z13FordFulkersonPPiiii(ptr noundef, i32 noundef, i32 noundef, i32 noundef) #2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEED1Ev(ptr noundef nonnull align 8 dereferenceable(256)) unnamed_addr #3 align 2

attributes #0 = { mustprogress norecurse uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #5 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #6 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #7 = { nobuiltin allocsize(0) "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #8 = { nounwind }
attributes #9 = { builtin allocsize(0) }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !12}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ifstream" = type { %"class.std::basic_istream.base", %"class.std::basic_filebuf", %"class.std::basic_ios" }
%"class.std::basic_istream.base" = type { ptr, i64 }
%"class.std::basic_filebuf" = type { %"class.std::basic_streambuf", %union.pthread_mutex_t, %"class.std::__basic_file", i32, %struct.__mbstate_t, %struct.__mbstate_t, %struct.__mbstate_t, ptr, i64, i8, i8, i8, i8, ptr, ptr, i8, ptr, ptr, i64, ptr, ptr }
%"class.std::basic_streambuf" = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr, %"class.std::locale" }
%union.pthread_mutex_t = type { %struct.__pthread_mutex_s }
%struct.__pthread_mutex_s = type { i32, i32, i32, i32, i32, i16, i16, %struct.__pthread_internal_list }
%struct.__pthread_internal_list = type { ptr, ptr }
%"class.std::__basic_file" = type <{ ptr, i8, [7 x i8] }>
%struct.__mbstate_t = type { i32, %union.anon }
%union.anon = type { i32 }

@.str = external hidden unnamed_addr constant [18 x i8], align 1
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.1 = external hidden unnamed_addr constant [21 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [17 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca %"class.std::basic_ifstream", align 8
  %2 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 520, ptr nonnull %1) #7
  call void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEEC1Ev(ptr noundef nonnull align 8 dereferenceable(256) %1)
  invoke void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE4openEPKcSt13_Ios_Openmode(ptr noundef nonnull align 8 dereferenceable(256) %1, ptr noundef nonnull @.str, i32 noundef 8)
          to label %3 unwind label %7

3:                                                ; preds = %0
  %4 = call noundef zeroext i1 @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE7is_openEv(ptr noundef nonnull align 8 dereferenceable(256) %1)
  br i1 %4, label %9, label %5

5:                                                ; preds = %3
  %6 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.1)
          to label %51 unwind label %7

7:                                                ; preds = %5, %0
  %8 = landingpad { ptr, i32 }
          cleanup
  br label %52

9:                                                ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #7
  %10 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %1, ptr noundef nonnull align 4 dereferenceable(4) %2)
          to label %11 unwind label %20

11:                                               ; preds = %9
  %12 = load i32, ptr %2, align 4, !tbaa !5
  %13 = sext i32 %12 to i64
  %14 = icmp slt i32 %12, 0
  %15 = shl nsw i64 %13, 3
  %16 = select i1 %14, i64 -1, i64 %15
  %17 = invoke noalias noundef nonnull ptr @_Znam(i64 noundef %16) #8
          to label %.preheader24 unwind label %20

.preheader24:                                     ; preds = %11
  %18 = icmp sgt i32 %12, 0
  br i1 %18, label %.lr.ph, label %._crit_edge29

.lr.ph:                                           ; preds = %.preheader24
  %19 = shl nuw nsw i64 %13, 2
  %wide.trip.count = zext nneg i32 %12 to i64
  br label %22

.preheader23:                                     ; preds = %24
  br i1 %18, label %.preheader, label %._crit_edge29

20:                                               ; preds = %47, %44, %42, %._crit_edge29, %11, %9
  %21 = landingpad { ptr, i32 }
          cleanup
  br label %50

22:                                               ; preds = %.lr.ph, %24
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %24 ]
  %23 = invoke noalias noundef nonnull ptr @_Znam(i64 noundef %19) #8
          to label %24 unwind label %26

24:                                               ; preds = %22
  %25 = getelementptr inbounds ptr, ptr %17, i64 %indvars.iv
  store ptr %23, ptr %25, align 8, !tbaa !9
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %.preheader23, label %22, !llvm.loop !11

26:                                               ; preds = %22
  %27 = landingpad { ptr, i32 }
          cleanup
  br label %50

.preheader:                                       ; preds = %.preheader23, %._crit_edge
  %28 = phi i32 [ %31, %._crit_edge ], [ %12, %.preheader23 ]
  %indvars.iv35 = phi i64 [ %indvars.iv.next36, %._crit_edge ], [ 0, %.preheader23 ]
  %29 = icmp sgt i32 %28, 0
  br i1 %29, label %.lr.ph27, label %.preheader.._crit_edge_crit_edge

.preheader.._crit_edge_crit_edge:                 ; preds = %.preheader
  %.pre38 = sext i32 %28 to i64
  br label %._crit_edge

.lr.ph27:                                         ; preds = %.preheader
  %30 = getelementptr inbounds ptr, ptr %17, i64 %indvars.iv35
  %.pre = load ptr, ptr %30, align 8, !tbaa !9
  br label %33

._crit_edge29:                                    ; preds = %._crit_edge, %.preheader24, %.preheader23
  invoke void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE5closeEv(ptr noundef nonnull align 8 dereferenceable(256) %1)
          to label %42 unwind label %20

._crit_edge:                                      ; preds = %36, %.preheader.._crit_edge_crit_edge
  %.pre-phi = phi i64 [ %.pre38, %.preheader.._crit_edge_crit_edge ], [ %38, %36 ]
  %31 = phi i32 [ %28, %.preheader.._crit_edge_crit_edge ], [ %37, %36 ]
  %indvars.iv.next36 = add nuw nsw i64 %indvars.iv35, 1
  %32 = icmp slt i64 %indvars.iv.next36, %.pre-phi
  br i1 %32, label %.preheader, label %._crit_edge29, !llvm.loop !13

33:                                               ; preds = %.lr.ph27, %36
  %indvars.iv32 = phi i64 [ 0, %.lr.ph27 ], [ %indvars.iv.next33, %36 ]
  %34 = getelementptr inbounds i32, ptr %.pre, i64 %indvars.iv32
  %35 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %1, ptr noundef nonnull align 4 dereferenceable(4) %34)
          to label %36 unwind label %40

36:                                               ; preds = %33
  %indvars.iv.next33 = add nuw nsw i64 %indvars.iv32, 1
  %37 = load i32, ptr %2, align 4, !tbaa !5
  %38 = sext i32 %37 to i64
  %39 = icmp slt i64 %indvars.iv.next33, %38
  br i1 %39, label %33, label %._crit_edge, !llvm.loop !15

40:                                               ; preds = %33
  %41 = landingpad { ptr, i32 }
          cleanup
  br label %50

42:                                               ; preds = %._crit_edge29
  %43 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.2)
          to label %44 unwind label %20

44:                                               ; preds = %42
  %45 = load i32, ptr %2, align 4, !tbaa !5
  %46 = invoke noundef i32 @_Z13FordFulkersonPPiiii(ptr noundef nonnull %17, i32 noundef %45, i32 noundef 0, i32 noundef 5)
          to label %47 unwind label %20

47:                                               ; preds = %44
  %48 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %43, i32 noundef %46)
          to label %49 unwind label %20

49:                                               ; preds = %47
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #7
  br label %51

50:                                               ; preds = %40, %26, %20
  %.pn = phi { ptr, i32 } [ %27, %26 ], [ %41, %40 ], [ %21, %20 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #7
  br label %52

51:                                               ; preds = %5, %49
  call void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEED1Ev(ptr noundef nonnull align 8 dereferenceable(256) %1) #7
  call void @llvm.lifetime.end.p0(i64 520, ptr nonnull %1) #7
  ret i32 0

52:                                               ; preds = %50, %7
  %.pn.pn = phi { ptr, i32 } [ %.pn, %50 ], [ %8, %7 ]
  call void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEED1Ev(ptr noundef nonnull align 8 dereferenceable(256) %1) #7
  call void @llvm.lifetime.end.p0(i64 520, ptr nonnull %1) #7
  resume { ptr, i32 } %.pn.pn
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress uwtable
declare void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEEC1Ev(ptr noundef nonnull align 8 dereferenceable(256)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE4openEPKcSt13_Ios_Openmode(ptr noundef nonnull align 8 dereferenceable(256), ptr noundef, i32 noundef) local_unnamed_addr #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare noundef zeroext i1 @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE7is_openEv(ptr noundef nonnull align 8 dereferenceable(256)) local_unnamed_addr #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #4

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #5

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znam(i64 noundef) local_unnamed_addr #6

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress uwtable
declare void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE5closeEv(ptr noundef nonnull align 8 dereferenceable(256)) local_unnamed_addr #2 align 2

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #5

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z13FordFulkersonPPiiii(ptr noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEED1Ev(ptr noundef nonnull align 8 dereferenceable(256)) unnamed_addr #3 align 2

attributes #0 = { mustprogress norecurse uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #5 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #6 = { nobuiltin allocsize(0) "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #7 = { nounwind }
attributes #8 = { builtin allocsize(0) }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12, !14}
!14 = !{!"llvm.loop.unswitch.partial.disable"}
!15 = distinct !{!15, !12}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,SCCPPass,SROAPass,SimpleLoopUnswitchPass,SimplifyCFGPass