[1767672986:106807][119861:0xffff95a6dbc0], t, file:T00001.wt, WT_CURSOR.reset: [WT_VERB_DEFAULT][ERROR]: __rec_upd_select, 891: WiredTiger assertion failed: '!((((r)->flags) & (0x0020u)) != 0) || prepare_rollback_tombstone != ((void *)0) || upd->next != ((void *)0) || ((vpack != ((void *)0) && vpack->type != (4 << 4)) && !(((&vpack->tw)->start_prepared_id != 0 || (&vpack->tw)->start_prepare_ts != 0) || ((&vpack->tw)->stop_prepared_id != 0 || (&vpack->tw)->stop_prepare_ts != 0)))'. leaked prepared update.
    [1767672986:106839][119861:0xffff95a6dbc0], t, file:T00001.wt, WT_CURSOR.reset: [WT_VERB_DEFAULT][ERROR]: __wt_abort, 29: aborting WiredTiger library

test/format run configuration highlights

#0  0x0000ffffa5abf7b4 in __pthread_kill_implementation () from /lib64/libc.so.6
#0  0x0000ffffa5abf7b4 in __pthread_kill_implementation () from /lib64/libc.so.6
#1  0x0000ffffa5a763a0 [PAC] in raise () from /lib64/libc.so.6
#2  0x0000ffffa5a62264 [PAC] in abort () from /lib64/libc.so.6
#3  0x0000ffffa5e31288 [PAC] in __wt_abort (session=session@entry=0x717bffea9ac0) at /data/mci/b7ca042669137a376c74f5993a1f6293/wiredtiger/src/os_common/os_abort.c:32
#4  0x0000ffffa5e6bd8c in __rec_upd_select (session=session@entry=0x717bffea9ac0, r=r@entry=0x717bf4127200, vpack=vpack@entry=0x0, first_upd=first_upd@entry=0x717be5b67500, upd_select=upd_select@entry=0xffff95a6af90, first_txn_updp=first_txn_updp@entry=0xffff95a6ab18, has_newer_updatesp=has_newer_updatesp@entry=0xffff95a6ab0f, write_prepare=write_prepare@entry=0xffff95a6ab0e, upd_memsizep=upd_memsizep@entry=0xffff95a6ab10) at /data/mci/b7ca042669137a376c74f5993a1f6293/wiredtiger/src/reconcile/rec_visibility.c:891
#5  0x0000ffffa5e6f3ec in __wti_rec_upd_select (session=session@entry=0x717bffea9ac0, r=r@entry=0x717bf4127200, ins=ins@entry=0x717bffdb8640, rip=rip@entry=0x0, vpack=vpack@entry=0x0, upd_select=upd_select@entry=0xffff95a6af90) at /data/mci/b7ca042669137a376c74f5993a1f6293/wiredtiger/src/reconcile/rec_visibility.c:1465
#6  0x0000ffffa5e62600 in __rec_row_leaf_insert (session=session@entry=0x717bffea9ac0, r=r@entry=0x717bf4127200, ins=0x717bffdb8640) at /data/mci/b7ca042669137a376c74f5993a1f6293/wiredtiger/src/reconcile/rec_row.c:890
#7  0x0000ffffa5e660e0 in __wti_rec_row_leaf (session=session@entry=0x717bffea9ac0, r=r@entry=0x717bf4127200, pageref=pageref@entry=0x717bffd71ea0, salvage=salvage@entry=0x0) at /data/mci/b7ca042669137a376c74f5993a1f6293/wiredtiger/src/reconcile/rec_row.c:1396
#8  0x0000ffffa5e7be88 in __reconcile (session=session@entry=0x717bffea9ac0, ref=ref@entry=0x717bffd71ea0, salvage=salvage@entry=0x0, flags=flags@entry=5282, page_lockedp=page_lockedp@entry=0xffff95a6bf6f) at /data/mci/b7ca042669137a376c74f5993a1f6293/wiredtiger/src/reconcile/rec_write.c:310
#9  0x0000ffffa5e7af50 in __wt_reconcile (session=session@entry=0x717bffea9ac0, ref=ref@entry=0x717bffd71ea0, salvage=salvage@entry=0x0, flags=flags@entry=5282) at /data/mci/b7ca042669137a376c74f5993a1f6293/wiredtiger/src/reconcile/rec_write.c:128
#10 0x0000ffffa5dec9bc in __evict_reconcile (session=session@entry=0x717bffea9ac0, ref=ref@entry=0x717bffd71ea0, evict_flags=evict_flags@entry=4) at /data/mci/b7ca042669137a376c74f5993a1f6293/wiredtiger/src/evict/evict_page.c:1078
#11 0x0000ffffa5dee808 in __wt_evict (session=session@entry=0x717bffea9ac0, ref=ref@entry=0x717bffd71ea0, previous_state=previous_state@entry=3 '\003', flags=flags@entry=4) at /data/mci/b7ca042669137a376c74f5993a1f6293/wiredtiger/src/evict/evict_page.c:241
#12 0x0000ffffa5ccfa20 in __wt_page_release_evict (session=session@entry=0x717bffea9ac0, ref=0x717bffd71ea0, flags=flags@entry=0) at /data/mci/b7ca042669137a376c74f5993a1f6293/wiredtiger/src/btree/bt_read.c:141
#13 0x0000ffffa5c92044 in __cursor_reset (cbt=cbt@entry=0x717bf3bfe800) at /data/mci/b7ca042669137a376c74f5993a1f6293/wiredtiger/src/include/cursor_inline.h:307
#14 0x0000ffffa5c92ba0 in __wt_btcur_reset (cbt=cbt@entry=0x717bf3bfe800) at /data/mci/b7ca042669137a376c74f5993a1f6293/wiredtiger/src/btree/bt_cursor.c:579
#15 0x0000ffffa5d87854 in __curfile_reset (cursor=0x717bf3bfe800) at /data/mci/b7ca042669137a376c74f5993a1f6293/wiredtiger/src/cursor/cur_file.c:273
#16 0x00000000004155b8 in table_op (tinfo=tinfo@entry=0x717bffbed880, intxn=intxn@entry=true, iso_level=iso_level@entry=ISOLATION_SNAPSHOT, op=<optimized out>, op@entry=UPDATE) at /data/mci/b7ca042669137a376c74f5993a1f6293/wiredtiger/test/format/ops.c:956
#17 0x00000000004167e4 in ops (arg=0x717bffbed880) at /data/mci/b7ca042669137a376c74f5993a1f6293/wiredtiger/test/format/ops.c:1303
#18 0x0000ffffa5abdb78 in start_thread () from /lib64/libc.so.6
#19 0x0000ffffa5b2acdc [PAC] in thread_start () from /lib64/libc.so.6