Task logger initialized (agent version '2026-04-15b' from Evergreen build revision 'f806882c27fc5d77eee8832f0a1d4d22c61fbcd2').
Starting task 'wiredtiger_disagg_amazon2023_disagg_stress_format_stress_test_disagg_switch_3_2079bdfc5c876c1eadcacbe42e1d6a639413d6ce_26_04_23_22_31_21', execution 0.
Running pre-task commands.
Running command 'shell.exec' in function 'cleanup' (step 1 of 2) in block 'pre'.
Finished command 'shell.exec' in function 'cleanup' (step 1 of 2) in block 'pre' in 2.388823ms.
Running command 'expansions.update' in function 'setup environment' (step 2 of 2) in block 'pre'.
Finished command 'expansions.update' in function 'setup environment' (step 2 of 2) in block 'pre' in 42.123µs.
Finished running pre-task commands in 2.640141ms.
Running task commands.
Running command 's3.get' in function 'fetch artifacts' (step 1 of 2).
Fetching remote file 'wiredtiger/amazon2023-disagg-stress/2079bdfc5c876c1eadcacbe42e1d6a639413d6ce/artifacts/compile_wiredtiger_disagg_amazon2023_disagg_stress_2079bdfc5c876c1eadcacbe42e1d6a639413d6ce_26_04_23_22_31_21.tgz' from S3 bucket 'build_external' (attempt 1 of 5).
Finished command 's3.get' in function 'fetch artifacts' (step 1 of 2) in 5.673755392s.
Running command 'shell.exec' in function 'format test disagg' (step 2 of 2).
export WT_TOPDIR=$(git rev-parse --show-toplevel)
export WT_BUILDDIR=$WT_TOPDIR/cmake_build
if [ "$OS" = "Windows_NT" ]; then
  export PATH=/cygdrive/c/python/Python311:/cygdrive/c/python/Python311/Scripts:$PATH
else
  export PATH=/opt/mongodbtoolchain/v5/bin:$PATH
  export LD_LIBRARY_PATH=$WT_BUILDDIR
fi
# Create the common sanitizer options and export the specific sanitizer environment
# variables.
COMMON_SAN_OPTIONS="abort_on_error=1:disable_coredump=0"
if [[ "" =~ ASan ]]; then
  export ASAN_OPTIONS="$COMMON_SAN_OPTIONS:unmap_shadow_on_exit=1"
  export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$(dirname $(/opt/mongodbtoolchain/v5/bin/clang -print-file-name=libclang_rt.asan.so))"
  export TESTUTIL_BYPASS_ASAN=1
elif [[ "" =~ MSan ]]; then
  export MSAN_OPTIONS="$COMMON_SAN_OPTIONS:verbosity=3"
  export TESTUTIL_MSAN=1
elif [[ "" =~ TSan ]]; then
  export TSAN_OPTIONS="$COMMON_SAN_OPTIONS:verbosity=3"
  export TESTUTIL_TSAN=1
elif [[ "" =~ UBSan ]]; then
  export UBSAN_OPTIONS="$COMMON_SAN_OPTIONS:print_stacktrace=1"
  export TESTUTIL_UBSAN=1
fi
if [[ 1 -eq 1 ]]; then
  # The preloaded library should be downloaded/built during "configure wiredtiger" step.
  # DO NOT MOVE:This variable must be set in the same function(shell) that runs a test,
  # and as close as possible to the test execution, since it affects all the binaries.
  export LD_PRELOAD=$WT_TOPDIR/TCMALLOC_LIB/libtcmalloc.so
  if [ ! -f "$LD_PRELOAD" ]; then
    echo "Error: TCMalloc support was requested, but the library doesn't exist: $LD_PRELOAD"
    exit 1
  fi
fi
# Set extensions to load
EXT="extensions=["
EXT="$EXT ext/compressors/snappy/libwiredtiger_snappy.so,"
EXT="$EXT ext/collators/reverse/libwiredtiger_reverse_collator.so,"
EXT="$EXT ext/encryptors/rotn/libwiredtiger_rotn.so,"
EXT="$EXT ext/page_log/palite/libwiredtiger_palite.so,"
EXT="$EXT ]"
export EXT
Dump Environment
 eval ${which_declare} ) | /usr/bin/which --tty-only --read-alias --read-functions --show-tilde --show-dot "$@"
BASH_FUNC_which%%=() {  ( alias;
CI=true
EVR_AGENT_PID=3461
EVR_TASK_ID=wiredtiger_disagg_amazon2023_disagg_stress_format_stress_test_disagg_switch_3_2079bdfc5c876c1eadcacbe42e1d6a639413d6ce_26_04_23_22_31_21
EXT=extensions=[ ext/compressors/snappy/libwiredtiger_snappy.so, ext/collators/reverse/libwiredtiger_reverse_collator.so, ext/encryptors/rotn/libwiredtiger_rotn.so, ext/page_log/palite/libwiredtiger_palite.so, ]
GOCACHE=/data/mci/7a93ceafa353296dc5f881c915a9ea1e/wiredtiger/cmake_build/test/format/.gocache
GOTRACEBACK=none
HISTCONTROL=ignoredups
HISTSIZE=1000
HOME=/home/ec2-user
HOSTNAME=ip-10-122-48-237.ec2.internal
INVOCATION_ID=354a1fd758294706813a97d562f81692
JASPER_ID=d468d4f0-bb7c-4dc0-a3e8-993763a069a0
JASPER_MANAGER=eb7747ae-dab1-4f14-adec-fdd3ce153296
JOURNAL_STREAM=8:17958
LANG=C.UTF-8
LC_ALL=C
LD_LIBRARY_PATH=/data/mci/7a93ceafa353296dc5f881c915a9ea1e/wiredtiger/cmake_build
LD_PRELOAD=/data/mci/7a93ceafa353296dc5f881c915a9ea1e/wiredtiger/TCMALLOC_LIB/libtcmalloc.so
LESSOPEN=||/usr/bin/lesspipe.sh %s
LOGNAME=ec2-user
MAIL=/var/spool/mail/ec2-user
PATH=/opt/mongodbtoolchain/v5/bin:/usr/sbin:/usr/sbin:/usr/sbin:/home/ec2-user/.local/bin:/home/ec2-user/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/opt/node/bin:/opt/node/bin:/opt/node/bin
PWD=/data/mci/7a93ceafa353296dc5f881c915a9ea1e/wiredtiger/cmake_build/test/format
SHELL=/bin/bash
SHLVL=1
SYSTEMD_COLORS=false
SYSTEMD_EXEC_PID=3374
S_COLORS=auto
TEMP=/data/mci/7a93ceafa353296dc5f881c915a9ea1e/tmp
TMP=/data/mci/7a93ceafa353296dc5f881c915a9ea1e/tmp
TMPDIR=/data/mci/7a93ceafa353296dc5f881c915a9ea1e/tmp
USER=ec2-user
WT_BUILDDIR=/data/mci/7a93ceafa353296dc5f881c915a9ea1e/wiredtiger/cmake_build
WT_TOPDIR=/data/mci/7a93ceafa353296dc5f881c915a9ea1e/wiredtiger
_=/usr/bin/printenv
which_declare=declare -f
}
echo "Dump Environment"
printenv | sort
# Fail, show the configuration file.
fail() {
  echo "======= FAILURE =========="
  [ -f RUNDIR/CONFIG ] && cat RUNDIR/CONFIG
  exit 1
}
for i in $(seq 5); do
  echo Iteration $i/5
  rm -rf RUNDIR
  ./t -c ../../../test/format/CONFIG.disagg disagg.mode=switch runs.timer=10:15  || fail
Iteration 1/5
t: process 3745 running
--- [Follower] Picked up checkpoint (metadata=[metadata_lsn=1189860,metadata_checksum=f79ebdcd,database_size=1206455192,version=1,compatible_version=1],timestamp=0x9de440) ---
--- [Follower] Picked up checkpoint (metadata=[metadata_lsn=1928734,metadata_checksum=dd45aab1,database_size=1338680615,version=1,compatible_version=1],timestamp=0xe12e27) ---
--- [Follower] Picked up checkpoint (metadata=[metadata_lsn=2496129,metadata_checksum=1951efba,database_size=1243497490,version=1,compatible_version=1],timestamp=0x11483d2) ---
t: successful run completed (828 seconds)
  if [ true = true ]; then
    ./t -R $format_args  || fail
  fi
done
t: WARNING: turning off ops.random_cursor with disagg as they are currently problematic and can cause stalls
 t: process 4542 running
--- [Follower] Picked up checkpoint (metadata=[metadata_lsn=2496129,metadata_checksum=1951efba,database_size=1243497490,version=1,compatible_version=1],timestamp=0x11483d2) ---
--- [Follower] Picked up checkpoint (metadata=[metadata_lsn=2992182,metadata_checksum=36e6a2fc,database_size=1212123899,version=1,compatible_version=1],timestamp=0x13e217d) ---
--- [Follower] Picked up checkpoint (metadata=[metadata_lsn=3425507,metadata_checksum=4fb493ba,database_size=1213959218,version=1,compatible_version=1],timestamp=0x1601fc9) ---
--- [Follower] Picked up checkpoint (metadata=[metadata_lsn=3819887,metadata_checksum=ef74dd1c,database_size=1242580342,version=1,compatible_version=1],timestamp=0x17a5e28) ---
t: successful run completed (1141 seconds)
 Iteration 2/5
t: process 5383 running
--- [Follower] Picked up checkpoint (metadata=[metadata_lsn=582078,metadata_checksum=794c8406,database_size=843462032,version=1,compatible_version=1],timestamp=0x202a248) ---
--- [Follower] Picked up checkpoint (metadata=[metadata_lsn=1282780,metadata_checksum=946e1445,database_size=930994913,version=1,compatible_version=1],timestamp=0x3231d7b) ---
--- [Follower] Picked up checkpoint (metadata=[metadata_lsn=1858562,metadata_checksum=1a747da7,database_size=933774121,version=1,compatible_version=1],timestamp=0x40e855c) ---
t: successful run completed (715 seconds)
t: WARNING: table selection didn't support mirroring, turning off mirroring
t: WARNING: turning off ops.random_cursor with disagg as they are currently problematic and can cause stalls
t: WARNING: table selection didn't support mirroring, turning off mirroring
t: WARNING: table.1 skipped verify because of EBUSY
 t: process 6004 running
--- [Follower] Picked up checkpoint (metadata=[metadata_lsn=2289891,metadata_checksum=d04b4cb,database_size=965070935,version=1,compatible_version=1],timestamp=0x4b42312) ---
--- [Follower] Picked up checkpoint (metadata=[metadata_lsn=2736680,metadata_checksum=6cf19916,database_size=893366769,version=1,compatible_version=1],timestamp=0x578e54a) ---
--- [Follower] Picked up checkpoint (metadata=[metadata_lsn=3139490,metadata_checksum=5965d10,database_size=870457868,version=1,compatible_version=1],timestamp=0x636cae8) ---
t: successful run completed (813 seconds)
t: WARNING: table.3 skipped verify because of EBUSY
t: WARNING: table.3 skipped verify because of EBUSY
 Iteration 3/5
t: process 6674 running
--- [Follower] Picked up checkpoint (metadata=[metadata_lsn=1337127,metadata_checksum=688f1a11,database_size=866304376,version=1,compatible_version=1],timestamp=0xe2ab2a) ---
--- [Follower] Picked up checkpoint (metadata=[metadata_lsn=2266619,metadata_checksum=5863bf2d,database_size=1114133787,version=1,compatible_version=1],timestamp=0x13db2f6) ---
--- [Follower] Picked up checkpoint (metadata=[metadata_lsn=3116883,metadata_checksum=135a2836,database_size=1180148321,version=1,compatible_version=1],timestamp=0x18e6e5f) ---
t: successful run completed (792 seconds)
t: WARNING: turning off ops.random_cursor with disagg as they are currently problematic and can cause stalls
t: WARNING: table selection didn't support mirroring, turning off mirroring
t: WARNING: table.1 skipped verify because of EBUSY
 t: process 7205 running
--- [Follower] Picked up checkpoint (metadata=[metadata_lsn=3836832,metadata_checksum=3858eb68,database_size=1115681622,version=1,compatible_version=1],timestamp=0x1d0aaf2) ---
--- [Follower] Picked up checkpoint (metadata=[metadata_lsn=4510074,metadata_checksum=7412b93e,database_size=1174428238,version=1,compatible_version=1],timestamp=0x20ef108) ---
--- [Follower] Picked up checkpoint (metadata=[metadata_lsn=5179411,metadata_checksum=9b925da1,database_size=1229697408,version=1,compatible_version=1],timestamp=0x24b3f62) ---
t: successful run

[1776990741:509696][9154:0xffff9dc68040], t, WT_SESSION.close: [WT_VERB_DEFAULT][ERROR]: __wt_scr_discard, 381: scratch buffer allocated and never discarded: __wt_prepared_discover_filter_apply_handles: 480

 Iteration 5/5
t: process 9154 running
--- [Follower] Picked up checkpoint (metadata=[metadata_lsn=810015,metadata_checksum=d56b0e14,database_size=870168674,version=1,compatible_version=1],timestamp=0x164b98a) ---
t: FAILED: read_op/82: now < start || now - start < FORMAT_PREPARE_TIMEOUT: WT_CURSOR.prev: timed out with prepare-conflict
############################################
#  RUN PARAMETERS: V3
############################################
assert.read_timestamp=0
background_compact=0
background_compact.free_space_target=4
backup=0
backup.incremental=off
backup.incr_granularity=14159
backup.live_restore=0
backup.live_restore_read_size=256
backup.live_restore_threads=5
block_cache=0
block_cache.cache_on_checkpoint=0
block_cache.cache_on_writes=1
block_cache.size=89
btree.reverse=0
cache=3072
cache.evict_max=1
cache.eviction_dirty_target=0
cache.eviction_dirty_trigger=0
cache.eviction_updates_target=0
cache.eviction_updates_trigger=0
cache.minimum=0
cache.maximum=0
checkpoint=on
checkpoint.log_size=199
checkpoint.wait=46
compact.free_space_target=57
debug.background_compact=0
debug.checkpoint_retention=10
debug.cursor_reposition=0
debug.eviction=0
debug.log_retention=9
debug.realloc_exact=0
debug.realloc_malloc=0
debug.slow_checkpoint=0
debug.table_logging=0
debug.update_restore_evict=1
disagg.internal_page_delta=1
disagg.leaf_page_delta=1
disagg.multi=0
disagg.multi_validation=0
disagg.enabled=1
disagg.layered=1
disagg.mode=switch
disagg.page_log=palite
disagg.key_provider=0
disagg.page_log.verbose=0
disagg.drain_threads=9
disagg.preserve=0
disk.data_extend=0
disk.encryption=rotn-7
disk.mmap=1
disk.mmap_all=0
eviction.evict_use_softptr=0
file_manager.close_handle_minimum=26
file_manager.close_idle_time=16
file_manager.close_scan_interval=23
format.abort=0
format.independent_thread_rng=1
format.major_timeout=0
import=0
logging=0
logging.compression=none
logging.file_max=298617
logging.prealloc=1
logging.remove=0
obsolete_cleanup.method=off
obsolete_cleanup.wait=2589
ops.alter=0
ops.compaction=0
ops.hs_cursor=1
ops.pct.modify=0
ops.bound_cursor=0
ops.prepare=1
ops.reserve=14
ops.random_cursor=0
ops.salvage=0
ops.throttle=0
ops.throttle.sleep_us=410190
ops.verify=1
prefetch=0
precise_checkpoint=1
preserve_prepared=1
quiet=1
random.data_seed=1497148
random.extra_seed=4616387
rollback_to_stable_threads=5
runs.in_memory=0
runs.ops=0
runs.predictable_replay=0
runs.source=layered
runs.tables=3
runs.threads=23
runs.timer=11
runs.type=row-store
runs.verify_failure_dump=0
statistics.mode=all
statistics_log.sources=off
stress.aggressive_stash_free=0
stress.aggressive_sweep=0
stress.checkpoint=0
stress.checkpoint_evict_page=0
stress.checkpoint_prepare=0
stress.compact_slow=0
stress.evict_reposition=0
stress.failpoint_eviction_split=1
stress.failpoint_hs_delete_key_from_ts=0
stress.failpoint_rec_before_wrapup=1
stress.hs_checkpoint_delay=0
stress.hs_search=0
stress.hs_sweep=1
stress.prefetch_delay=0
stress.prepare_resolution_1=0
stress.sleep_before_read_overflow_onpage=0
stress.split_1=0
stress.split_2=0
stress.split_3=0
stress.split_4=0
stress.split_5=0
stress.split_6=0
stress.split_7=0
stress.split_8=0
tiered_storage.flush_frequency=0
tiered_storage.storage_source=off
transaction.implicit=0
transaction.operation_timeout_ms=2000
transaction.timestamps=1
wiredtiger.config=off
wiredtiger.rwlock=1
wiredtiger.leak_memory=0
############################################
#  TABLE PARAMETERS: table 1
############################################
table1.btree.compression=none
table1.btree.dictionary=1
table1.btree.internal_key_truncation=1
table1.btree.internal_page_max=11
table1.btree.key_max=125
table1.btree.key_min=26
table1.btree.leaf_page_max=12
table1.btree.memory_page_max=7
table1.btree.prefix_len=0
table1.btree.prefix_compression=1
table1.btree.prefix_compression_min=1
table1.btree.split_pct=67
table1.btree.value_max=834
table1.btree.value_min=6
table1.disk.checksum=on
table1.disk.firstfit=1
table1.ops.pareto=0
table1.ops.pareto.skew=61
table1.ops.pct.delete=2
table1.ops.pct.insert=37
table1.ops.pct.read=19
table1.ops.pct.write=42
table1.ops.truncate=1
table1.runs.mirror=0
table1.runs.rows=877412
############################################
#  TABLE PARAMETERS: table 2
############################################
table2.btree.compression=none
table2.btree.dictionary=0
table2.btree.internal_key_truncation=1
table2.btree.internal_page_max=10
table2.btree.key_max=43
table2.btree.key_min=23
table2.btree.leaf_page_max=9
table2.btree.memory_page_max=10
table2.btree.prefix_len=0
table2.btree.prefix_compression=1
table2.btree.prefix_compression_min=7
table2.btree.split_pct=92
table2.btree.value_max=3710
table2.btree.value_min=0
table2.disk.checksum=on
table2.disk.firstfit=1
table2.ops.pareto=0
table2.ops.pareto.skew=51
table2.ops.pct.delete=45
table2.ops.pct.insert=4
table2.ops.pct.read=5
table2.ops.pct.write=46
table2.ops.truncate=1
table2.runs.mirror=0
table2.runs.rows=137442
############################################
#  TABLE PARAMETERS: table 3
############################################
table3.btree.compression=none
table3.btree.dictionary=0
table3.btree.internal_key_truncation=1
table3.btree.internal_page_max=9
table3.btree.key_max=56
table3.btree.key_min=29
table3.btree.leaf_page_max=9
table3.btree.memory_page_max=6
table3.btree.prefix_len=0
table3.btree.prefix_compression=1
table3.btree.prefix_compression_min=0
table3.btree.split_pct=58
table3.btree.value_max=895
table3.btree.value_min=7
table3.disk.checksum=off
table3.disk.firstfit=0
table3.ops.pareto=0
table3.ops.pareto.skew=45
table3.ops.pct.delete=20
table3.ops.pct.insert=2
table3.ops.pct.read=4
table3.ops.pct.write=74
table3.ops.truncate=1
table3.runs.mirror=0
table3.runs.rows=788629
t: run FAILED
t: process aborting
WiredTiger Error: __wt_abort, 29: aborting WiredTiger library
Error at src/include/txn_inline.h:1615: "__wt_txn_read_upd_list_internal(session, cbt, upd, &prepare_upd, &restored_upd)" failed with WT_PREPARE_CONFLICT: conflict with a prepared update (-31808)
Error at src/btree/bt_curprev.c:526: "__wt_txn_read(session, cbt, &cbt->iface.key, WT_RECNO_OOB, WT_ROW_UPDATE(page, rip))" failed with WT_PREPARE_CONFLICT: conflict with a prepared update (-31808)
Error at src/cursor/cur_file.c:246: "ret" failed with WT_PREPARE_CONFLICT: conflict with a prepared update (-31808)
Error at src/cursor/cur_layered.c:961: "ret" failed with WT_PREPARE_CONFLICT: conflict with a prepared update (-31808)
Error at src/cursor/cur_layered.c:1130: "__clayered_iterate_constituents(clayered, iter_flag)" failed with WT_PREPARE_CONFLICT: conflict with a prepared update (-31808)
Error at src/cursor/cur_layered.c:1208: "__clayered_iterate(clayered, WT_CLAYERED_ITERATE_PREV)" failed with WT_PREPARE_CONFLICT: conflict with a prepared update (-31808)
bash: line 65:  9154 Aborted                 (core dumped) ./t -c ../../../test/format/CONFIG.disagg disagg.mode=switch runs.timer=10:15
======= FAILURE ==========
############################################
#  RUN PARAMETERS: V3
############################################
assert.read_timestamp=0
background_compact=0
background_compact.free_space_target=4
backup=0
backup.incremental=off
backup.incr_granularity=14159
backup.live_restore=0
backup.live_restore_read_size=256
backup.live_restore_threads=5
block_cache=0
block_cache.cache_on_checkpoint=0
block_cache.cache_on_writes=1
block_cache.size=89
btree.reverse=0
cache=3072
cache.evict_max=1
cache.eviction_dirty_target=0
cache.eviction_dirty_trigger=0
cache.eviction_updates_target=0
cache.eviction_updates_trigger=0
cache.minimum=0
cache.maximum=0
checkpoint=on
checkpoint.log_size=199
checkpoint.wait=46
compact.free_space_target=57
debug.background_compact=0
debug.checkpoint_retention=10
debug.cursor_reposition=0
debug.eviction=0
debug.log_retention=9
debug.realloc_exact=0
debug.realloc_malloc=0
debug.slow_checkpoint=0
debug.table_logging=0
debug.update_restore_evict=1
disagg.internal_page_delta=1
disagg.leaf_page_delta=1
disagg.multi=0
disagg.multi_validation=0
disagg.enabled=1
disagg.layered=1
disagg.mode=switch
disagg.page_log=palite
disagg.key_provider=0
disagg.page_log.verbose=0
disagg.drain_threads=9
disagg.preserve=0
disk.data_extend=0
disk.encryption=rotn-7
disk.mmap=1
disk.mmap_all=0
eviction.evict_use_softptr=0
file_manager.close_handle_minimum=26
file_manager.close_idle_time=16
file_manager.close_scan_interval=23
format.abort=0
format.independent_thread_rng=1
format.major_timeout=0
import=0
logging=0
logging.compression=none
logging.file_max=298617
logging.prealloc=1
logging.remove=0
obsolete_cleanup.method=off
obsolete_cleanup.wait=2589
ops.alter=0
ops.compaction=0
ops.hs_cursor=1
ops.pct.modify=0
ops.bound_cursor=0
ops.prepare=1
ops.reserve=14
ops.random_cursor=0
ops.salvage=0
ops.throttle=0
ops.throttle.sleep_us=410190
ops.verify=1
prefetch=0
precise_checkpoint=1
preserve_prepared=1
quiet=1
random.data_seed=1497148
random.extra_seed=4616387
rollback_to_stable_threads=5
runs.in_memory=0
runs.ops=0
runs.predictable_replay=0
runs.source=layered
runs.tables=3
runs.threads=23
runs.timer=11
runs.type=row-store
runs.verify_failure_dump=0
statistics.mode=all
statistics_log.sources=off
stress.aggressive_stash_free=0
stress.aggressive_sweep=0
stress.checkpoint=0
stress.checkpoint_evict_page=0
stress.checkpoint_prepare=0
stress.compact_slow=0
stress.evict_reposition=0
stress.failpoint_eviction_split=1
stress.failpoint_hs_delete_key_from_ts=0
stress.failpoint_rec_before_wrapup=1
stress.hs_checkpoint_delay=0
stress.hs_search=0
stress.hs_sweep=1
stress.prefetch_delay=0
stress.prepare_resolution_1=0
stress.sleep_before_read_overflow_onpage=0
stress.split_1=0
stress.split_2=0
stress.split_3=0
stress.split_4=0
stress.split_5=0
stress.split_6=0
stress.split_7=0
stress.split_8=0
tiered_storage.flush_frequency=0
tiered_storage.storage_source=off
transaction.implicit=0
transaction.operation_timeout_ms=2000
transaction.timestamps=1
wiredtiger.config=off
wiredtiger.rwlock=1
wiredtiger.leak_memory=0

#0  0x0000ffff9c2c4454 in __pthread_kill_implementation () from /lib64/libc.so.6
#0  0x0000ffff9c2c4454 in __pthread_kill_implementation () from /lib64/libc.so.6
#1  0x0000ffff9c27b320 [PAC] in raise () from /lib64/libc.so.6
#2  0x0000ffff9c262224 [PAC] in abort () from /lib64/libc.so.6
#3  0x0000ffff9c63e108 [PAC] in __wt_abort (session=session@entry=0x0) at /data/mci/54b7b242b03eb49b178d99b91219ee65/wiredtiger/src/os_common/os_abort.c:32
#4  0x00000000004255d4 in testutil_die (e=e@entry=0, fmt=fmt@entry=0x428718 "%s/%d: %s: %s: timed out with prepare-conflict") at /data/mci/54b7b242b03eb49b178d99b91219ee65/wiredtiger/test/utility/misc.c:75
#5  0x0000000000412f28 in read_op (cursor=cursor@entry=0x1337ebd88000, op=op@entry=PREV, exactp=exactp@entry=0x0) at /data/mci/54b7b242b03eb49b178d99b91219ee65/wiredtiger/test/format/format_inline.h:82
#6  0x0000000000413960 in nextprev (tinfo=tinfo@entry=0x1337ef3fe000, next=next@entry=false) at /data/mci/54b7b242b03eb49b178d99b91219ee65/wiredtiger/test/format/ops.c:1683
#7  0x0000000000415394 in table_op (tinfo=tinfo@entry=0x1337ef3fe000, intxn=intxn@entry=true, iso_level=iso_level@entry=ISOLATION_SNAPSHOT, op=<optimized out>, op@entry=UPDATE) at /data/mci/54b7b242b03eb49b178d99b91219ee65/wiredtiger/test/format/ops.c:940
#8  0x000000000041692c in ops (arg=0x1337ef3fe000) at /data/mci/54b7b242b03eb49b178d99b91219ee65/wiredtiger/test/format/ops.c:1302
#9  0x0000ffff9c2c2834 in start_thread () from /lib64/libc.so.6
#10 0x0000ffff9c266e5c [PAC] in thread_start () from /lib64/libc.so.6