OverviewCakeML:727dc828d7a5cbbac1d2e4f6cd59f3537308be1c
Remove compiler/benchmarks from build sequence
#583 (heapfree)
Merging into:9b366aa092a1e2c8100d95bbe3fa77b5fe513dc9
Merge pull request #582 from CakeML/cleanup
HOL:2300978321a15932fdaf49ff5e1365d09a9a1c3b
Fix typo
Machine:oven1 (2) 4.17.17-100.fc27.x86_64 x86_64
Claimed job
Reusing HOL
Starting developers
Finished developers 2s 19MB
Starting developers/bin
Finished developers/bin 1m05s 916MB
Starting semantics/ffi
Finished semantics/ffi 10s 238MB
Starting semantics
Finished semantics 1m24s 1GB
Starting semantics/proofs
Finished semantics/proofs 3m21s 1GB
Starting basis/pure
Finished basis/pure 53s 880MB
Starting translator
Finished translator 1m38s 1GB
Starting compiler/parsing
Finished compiler/parsing 1m04s 1GB
Starting characteristic
Finished characteristic 3m21s 1GB
Starting translator/monadic
Finished translator/monadic 1m28s 1GB
Starting basis
Finished basis 16m25s 2GB
Starting compiler/inference
Finished compiler/inference 1m40s 1GB
Starting compiler/backend/reg_alloc
Finished compiler/backend/reg_alloc 52s 1GB
Starting compiler/backend/gc
Finished compiler/backend/gc 8m03s 2GB
Starting compiler/backend
Finished compiler/backend 2s 18MB
Starting compiler/encoders/asm
Finished compiler/encoders/asm 1s 22MB
Starting compiler/encoders/x64
Finished compiler/encoders/x64 25s 955MB
Starting compiler/encoders/arm6
Finished compiler/encoders/arm6 51s 721MB
Starting compiler/encoders/arm8
Finished compiler/encoders/arm8 13s 891MB
Starting compiler/encoders/mips
Finished compiler/encoders/mips 17s 1GB
Starting compiler/encoders/riscv
Finished compiler/encoders/riscv 14s 667MB
Starting compiler/encoders/ag32
Finished compiler/encoders/ag32 17s 808MB
Starting compiler/backend/x64
Finished compiler/backend/x64 18s 902MB
Starting compiler/backend/arm6
Finished compiler/backend/arm6 18s 1GB
Starting compiler/backend/arm8
Finished compiler/backend/arm8 17s 873MB
Starting compiler/backend/mips
Finished compiler/backend/mips 19s 1GB
Starting compiler/backend/riscv
Finished compiler/backend/riscv 19s 1GB
Starting compiler/backend/ag32
Finished compiler/backend/ag32 1m12s 1GB
Starting compiler/parsing/proofs
Finished compiler/parsing/proofs 6m11s 861MB
Starting compiler/inference/proofs
Resuming compiler/inference/proofs
Finished compiler/inference/proofs 22s 795MB
Starting compiler/backend/semantics
Finished compiler/backend/semantics 7m28s 2GB
Starting compiler/backend/reg_alloc/proofs
Finished compiler/backend/reg_alloc/proofs 2m44s 742MB
Starting compiler/backend/proofs
Finished compiler/backend/proofs 38m39s 4GB
Starting compiler/encoders/x64/proofs
Finished compiler/encoders/x64/proofs 9m47s 5GB
Starting compiler/encoders/arm6/proofs
Finished compiler/encoders/arm6/proofs 13m44s 6GB
Starting compiler/encoders/arm8/proofs
Finished compiler/encoders/arm8/proofs 5m58s 1GB
Starting compiler/encoders/mips/proofs
Finished compiler/encoders/mips/proofs 10m11s 2GB
Starting compiler/encoders/riscv/proofs
Finished compiler/encoders/riscv/proofs 7m46s 1GB
Starting compiler/encoders/ag32/proofs
Finished compiler/encoders/ag32/proofs 2m40s 661MB
Starting compiler/backend/x64/proofs
Finished compiler/backend/x64/proofs 19s 789MB
Starting compiler/backend/arm6/proofs
Finished compiler/backend/arm6/proofs 22s 1GB
Starting compiler/backend/arm8/proofs
Finished compiler/backend/arm8/proofs 18s 759MB
Starting compiler/backend/mips/proofs
Finished compiler/backend/mips/proofs 19s 1GB
Starting compiler/backend/riscv/proofs
Finished compiler/backend/riscv/proofs 20s 1GB
Starting compiler/backend/ag32/proofs
Finished compiler/backend/ag32/proofs 9m09s 1GB
Starting compiler/proofs
Resuming compiler/proofs
Finished compiler/proofs 1m19s 3GB
Starting candle/set-theory
Finished candle/set-theory 27s 669MB
Starting candle/syntax-lib
Finished candle/syntax-lib 10s 603MB
Starting candle/standard/syntax
Finished candle/standard/syntax 1m50s 1GB
Starting candle/standard/semantics
Finished candle/standard/semantics 1m41s 1GB
Starting candle/standard/monadic
Finished candle/standard/monadic 1m41s 1GB
Starting candle/standard/ml_kernel
Finished candle/standard/ml_kernel 14m59s 3GB
Starting candle/standard/opentheory
Finished candle/standard/opentheory 8m42s 5GB
Starting candle/standard/opentheory/compilation
Finished candle/standard/opentheory/compilation 29m09s 15GB
Starting candle/standard/opentheory/compilation/proofs
Finished candle/standard/opentheory/compilation/proofs 43s 4GB
Starting characteristic/examples
Finished characteristic/examples 1m40s 3GB
Starting tutorial/solutions
Finished tutorial/solutions 13m08s 6GB
Starting translator/monadic/examples
Finished translator/monadic/examples 2m10s 2GB
Starting examples
Finished examples 7m42s 4GB
Starting examples/compilation/x64
Finished examples/compilation/x64 2h02m17s 11GB
Starting examples/compilation/x64/proofs
Finished examples/compilation/x64/proofs 1m50s 4GB
Starting examples/compilation/ag32
Finished examples/compilation/ag32 27m58s 5GB
Starting examples/compilation/ag32/proofs
Finished examples/compilation/ag32/proofs 48s 4GB
Starting translator/okasaki-examples
Finished translator/okasaki-examples 3m59s 2GB
Starting translator/other-examples
Finished translator/other-examples 3m35s 1GB
Starting compiler/parsing/tests
Finished compiler/parsing/tests 27s 554MB
Starting compiler/inference/tests
Finished compiler/inference/tests 4m00s 3GB
Starting compiler/bootstrap/translation
FAILED: compiler/bootstrap/translation
]0;Holmake: .]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/arm/model]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/common]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/machine-code/hoare-triple]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/machine-code/hoare-triple[1mWorking in $(HOLDIR)/examples/machine-code/hoare-triple[0m
]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/common]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/common[1mWorking in $(HOLDIR)/examples/l3-machine-code/common[0m
]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/arm/model]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/lib]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/lib[1mWorking in $(HOLDIR)/examples/l3-machine-code/lib[0m
]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/arm/model]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/arm/model[1mWorking in $(HOLDIR)/examples/l3-machine-code/arm/model[0m
]0;Holmake: .]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/arm8/model]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/arm8/model[1mWorking in $(HOLDIR)/examples/l3-machine-code/arm8/model[0m
]0;Holmake: .]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/mips/model]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/mips/model[1mWorking in $(HOLDIR)/examples/l3-machine-code/mips/model[0m
]0;Holmake: .]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/riscv/model]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/riscv/model[1mWorking in $(HOLDIR)/examples/l3-machine-code/riscv/model[0m
]0;Holmake: .]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/x64/model]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/x64/model[1mWorking in $(HOLDIR)/examples/l3-machine-code/x64/model[0m
]0;Holmake: .]0;Holmake: ~/oven/regression/cakeml-633/basis]0;Holmake: ~/oven/regression/cakeml-633/basis/pure]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/formal-languages/regular]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/balanced_bst]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/balanced_bst[1mWorking in $(HOLDIR)/examples/balanced_bst[0m
]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/formal-languages/regular]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/formal-languages]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/formal-languages[1mWorking in $(HOLDIR)/examples/formal-languages[0m
]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/formal-languages/regular]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/formal-languages/regular[1mWorking in $(HOLDIR)/examples/formal-languages/regular[0m
]0;Holmake: ~/oven/regression/cakeml-633/basis/pure]0;Holmake: ~/oven/regression/cakeml-633/misc]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/fun-op-sem/lprefix_lub]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/fun-op-sem/lprefix_lub[1mWorking in $(HOLDIR)/examples/fun-op-sem/lprefix_lub[0m
]0;Holmake: ~/oven/regression/cakeml-633/misc]0;Holmake: ~/oven/regression/cakeml-633/developers]0;Holmake: ~/oven/regression/cakeml-633/developers[1mWorking in $(CAKEMLDIR)/developers[0m
]0;Holmake: ~/oven/regression/cakeml-633/misc]0;Holmake: ~/oven/regression/cakeml-633/misc/lem_lib_stub]0;Holmake: ~/oven/regression/cakeml-633/misc/lem_lib_stub[1mWorking in $(CAKEMLDIR)/misc/lem_lib_stub[0m
]0;Holmake: ~/oven/regression/cakeml-633/misc]0;Holmake: ~/oven/regression/cakeml-633/misc[1mWorking in $(CAKEMLDIR)/misc[0m
]0;Holmake: ~/oven/regression/cakeml-633/basis/pure]0;Holmake: ~/oven/regression/cakeml-633/basis/pure[1mWorking in $(CAKEMLDIR)/basis/pure[0m
]0;Holmake: ~/oven/regression/cakeml-633/basis]0;Holmake: ~/oven/regression/cakeml-633/characteristic]0;Holmake: ~/oven/regression/cakeml-633/compiler/parsing]0;Holmake: ~/oven/regression/cakeml-633/semantics]0;Holmake: ~/oven/regression/cakeml-633/semantics/ffi]0;Holmake: ~/oven/regression/cakeml-633/semantics/ffi[1mWorking in $(CAKEMLDIR)/semantics/ffi[0m
]0;Holmake: ~/oven/regression/cakeml-633/semantics]0;Holmake: ~/oven/regression/cakeml-633/semantics[1mWorking in $(CAKEMLDIR)/semantics[0m
]0;Holmake: ~/oven/regression/cakeml-633/compiler/parsing]0;Holmake: ~/oven/regression/cakeml-633/compiler/parsing[1mWorking in $(CAKEMLDIR)/compiler/parsing[0m
]0;Holmake: ~/oven/regression/cakeml-633/characteristic]0;Holmake: ~/oven/regression/cakeml-633/semantics/proofs]0;Holmake: ~/oven/regression/cakeml-633/semantics/proofs[1mWorking in $(CAKEMLDIR)/semantics/proofs[0m
]0;Holmake: ~/oven/regression/cakeml-633/characteristic]0;Holmake: ~/oven/regression/cakeml-633/translator]0;Holmake: ~/oven/regression/cakeml-633/translator[1mWorking in $(CAKEMLDIR)/translator[0m
]0;Holmake: ~/oven/regression/cakeml-633/characteristic]0;Holmake: ~/oven/regression/cakeml-633/characteristic[1mWorking in $(CAKEMLDIR)/characteristic[0m
]0;Holmake: ~/oven/regression/cakeml-633/basis]0;Holmake: ~/oven/regression/cakeml-633/translator/monadic]0;Holmake: ~/oven/regression/cakeml-633/translator/monadic/monad_base]0;Holmake: ~/oven/regression/cakeml-633/translator/monadic/monad_base[1mWorking in $(CAKEMLDIR)/translator/monadic/monad_base[0m
]0;Holmake: ~/oven/regression/cakeml-633/translator/monadic]0;Holmake: ~/oven/regression/cakeml-633/translator/monadic[1mWorking in $(CAKEMLDIR)/translator/monadic[0m
]0;Holmake: ~/oven/regression/cakeml-633/basis]0;Holmake: ~/oven/regression/cakeml-633/basis[1mWorking in $(CAKEMLDIR)/basis[0m
]0;Holmake: .]0;Holmake: ../..]0;Holmake: ../../backend]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/machine-code/multiword]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/machine-code/multiword[1mWorking in $(HOLDIR)/examples/machine-code/multiword[0m
]0;Holmake: ../../backend]0;Holmake: ../../backend/reg_alloc]0;Holmake: ~/oven/regression/cakeml-633/unverified/reg_alloc]0;Holmake: ~/oven/regression/cakeml-633/unverified/reg_alloc[1mWorking in $(CAKEMLDIR)/unverified/reg_alloc[0m
]0;Holmake: ../../backend/reg_alloc]0;Holmake: ../../backend/reg_alloc[1mWorking in $(CAKEMLDIR)/compiler/backend/reg_alloc[0m
]0;Holmake: ../../backend]0;Holmake: ../../encoders/asm]0;Holmake: ../../encoders/asm[1mWorking in $(CAKEMLDIR)/compiler/encoders/asm[0m
]0;Holmake: ../../backend]0;Holmake: ../../backend[1mWorking in $(CAKEMLDIR)/compiler/backend[0m
]0;Holmake: ../..]0;Holmake: ../../backend/ag32]0;Holmake: ../../encoders/ag32]0;Holmake: ../../encoders/ag32[1mWorking in $(CAKEMLDIR)/compiler/encoders/ag32[0m
]0;Holmake: ../../backend/ag32]0;Holmake: ../../backend/ag32[1mWorking in $(CAKEMLDIR)/compiler/backend/ag32[0m
]0;Holmake: ../..]0;Holmake: ../../backend/arm6]0;Holmake: ../../encoders/arm6]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/arm/step]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/machine-code/decompiler]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/machine-code/decompiler[1mWorking in $(HOLDIR)/examples/machine-code/decompiler[0m
]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code[1mWorking in $(HOLDIR)/examples/l3-machine-code[0m
]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/arm/step]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/arm/step[1mWorking in $(HOLDIR)/examples/l3-machine-code/arm/step[0m
]0;Holmake: ../../encoders/arm6]0;Holmake: ../../encoders/arm6[1mWorking in $(CAKEMLDIR)/compiler/encoders/arm6[0m
]0;Holmake: ../../backend/arm6]0;Holmake: ../../backend/arm6[1mWorking in $(CAKEMLDIR)/compiler/backend/arm6[0m
]0;Holmake: ../..]0;Holmake: ../../backend/arm8]0;Holmake: ../../encoders/arm8]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/arm8/step]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/arm8/step[1mWorking in $(HOLDIR)/examples/l3-machine-code/arm8/step[0m
]0;Holmake: ../../encoders/arm8]0;Holmake: ../../encoders/arm8[1mWorking in $(CAKEMLDIR)/compiler/encoders/arm8[0m
]0;Holmake: ../../backend/arm8]0;Holmake: ../../backend/arm8[1mWorking in $(CAKEMLDIR)/compiler/backend/arm8[0m
]0;Holmake: ../..]0;Holmake: ../../backend/mips]0;Holmake: ../../encoders/mips]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/mips/step]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/mips/step[1mWorking in $(HOLDIR)/examples/l3-machine-code/mips/step[0m
]0;Holmake: ../../encoders/mips]0;Holmake: ../../encoders/mips[1mWorking in $(CAKEMLDIR)/compiler/encoders/mips[0m
]0;Holmake: ../../backend/mips]0;Holmake: ../../backend/mips[1mWorking in $(CAKEMLDIR)/compiler/backend/mips[0m
]0;Holmake: ../..]0;Holmake: ../../backend/riscv]0;Holmake: ../../encoders/riscv]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/riscv/step]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/riscv/step[1mWorking in $(HOLDIR)/examples/l3-machine-code/riscv/step[0m
]0;Holmake: ../../encoders/riscv]0;Holmake: ../../encoders/riscv[1mWorking in $(CAKEMLDIR)/compiler/encoders/riscv[0m
]0;Holmake: ../../backend/riscv]0;Holmake: ../../backend/riscv[1mWorking in $(CAKEMLDIR)/compiler/backend/riscv[0m
]0;Holmake: ../..]0;Holmake: ../../backend/x64]0;Holmake: ../../encoders/x64]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/x64/step]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/l3-machine-code/x64/step[1mWorking in $(HOLDIR)/examples/l3-machine-code/x64/step[0m
]0;Holmake: ../../encoders/x64]0;Holmake: ../../encoders/x64[1mWorking in $(CAKEMLDIR)/compiler/encoders/x64[0m
]0;Holmake: ../../backend/x64]0;Holmake: ../../backend/x64[1mWorking in $(CAKEMLDIR)/compiler/backend/x64[0m
]0;Holmake: ../..]0;Holmake: ../../inference]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/unification/triangular/first-order]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/unification/triangular]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/unification/triangular[1mWorking in $(HOLDIR)/examples/unification/triangular[0m
]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/unification/triangular/first-order]0;Holmake: ~/oven/regression/HOL-2300978321a15932fdaf49ff5e1365d09a9a1c3b/examples/unification/triangular/first-order[1mWorking in $(HOLDIR)/examples/unification/triangular/first-order[0m
]0;Holmake: ../../inference]0;Holmake: ../../inference[1mWorking in $(CAKEMLDIR)/compiler/inference[0m
]0;Holmake: ../..]0;Holmake: ../..[1mWorking in $(CAKEMLDIR)/compiler[0m
]0;Holmake: .]0;Holmake: ../../backend/reg_alloc/proofs]0;Holmake: ../../backend/reg_alloc/proofs[1mWorking in $(CAKEMLDIR)/compiler/backend/reg_alloc/proofs[0m
]0;Holmake: .]0;Holmake: ../../inference/proofs]0;Holmake: ../../inference/proofs[1mWorking in $(CAKEMLDIR)/compiler/inference/proofs[0m
]0;Holmake: .]0;Holmake: .[1mWorking in $(CAKEMLDIR)/compiler/bootstrap/translation[0m
Starting work on to_dataProgTheory
Starting work on README.md
README.md OK
to_dataProgTheory FAILED! <1>
error in quse /home/cake/oven/regression/cakeml-633/compiler/bootstrap/translation/to_dataProgScript.sml : HOL_ERR {message = "", origin_function = "find_term", origin_structure = "HolKernel"}
error in load to_dataProgScript : HOL_ERR {message = "", origin_function = "find_term", origin_structure = "HolKernel"}
Proof of
let_op [x] []
failed.
Failed to prove theorem let_op_SING_NOT_NIL.
Uncaught exception: HOL_ERR {message = "", origin_function = "find_term", origin_structure = "HolKernel"}