our $grammars;
$combinations = [ [ '
                      --duration=300
                      --reporter=ErrorLog,Backtrace
                      --threads=8
                      --queries=1000000
                      --gendata=MDEV-16131.zz
                      --engine=Innodb
                      --mysqld=--loose_innodb_use_native_aio=0
                      --mysqld=--innodb-lock-wait-timeout=50
                      --mysqld=--loose-idle_transaction_timeout=0
                      --mysqld=--net_read_timeout=30
                      --mysqld=--loose-table_lock_wait_timeout=50
                      --mysqld=--connect_timeout=60
                      --mysqld=--loose-idle_write_transaction_timeout=0
                      --mysqld=--slave_net_timeout=60
                      --mysqld=--log-output=none
                      --mysqld=--lock-wait-timeout=86400
                      --mysqld=--loose_innodb_lock_schedule_algorithm=fcfs
                      --mysqld=--interactive_timeout=28800
                      --mysqld=--wait_timeout=28800
                      --mysqld=--loose-idle_readonly_transaction_timeout=0
                      --mysqld=--innodb_stats_persistent=off
                      --mysqld=--net_write_timeout=60
                      --no-mask --seed=random
                      --whitelist_statuses="\'STATUS_SERVER_CRASHED\'"
                      --whitelist_patterns="\'mysqld: .{1,200}dict0mem.h.{1,100} const: Assertion .{1,100} id == DICT_INDEXES_ID. failed\'"
                      --blacklist_statuses="\'STATUS_OK\'"
                      --blacklist_patterns="\'Sentence is now longer than .{1,10} symbols. Possible endless loop in grammar. Aborting.\',\'\[ERROR\] InnoDB: preallocating .{1,120} with error 28\',\'  is truncated: expected core file size \'"
                    ' ] ];

# mysqld: /home/mleich/Server/10.3/storage/innobase/include/dict0mem.h:1094: const byte* dict_index_t::instant_field_value(ulint, ulint*) const: Assertion `is_instant() || id == DICT_INDEXES_ID' failed.