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Parsed test spec with 3 sessions

starting permutation: s1_show s1_commit s2_commit
step s1_show: SELECT current_setting('default_transaction_isolation') <> 'read committed';
?column?
--------
f       
(1 row)

step s1_commit: COMMIT;
step s2_commit: COMMIT;

starting permutation: s1_lock s2_update s2_abort s3_forkeyshr s1_commit
step s1_lock: SELECT * FROM dont_forget FOR KEY SHARE;
value
-----
    1
(1 row)

step s2_update: UPDATE dont_forget SET value = 2;
step s2_abort: ROLLBACK;
step s3_forkeyshr: SELECT * FROM dont_forget FOR KEY SHARE;
value
-----
    1
(1 row)

step s1_commit: COMMIT;

starting permutation: s1_lock s2_update s2_commit s3_forkeyshr s1_commit
step s1_lock: SELECT * FROM dont_forget FOR KEY SHARE;
value
-----
    1
(1 row)

step s2_update: UPDATE dont_forget SET value = 2;
step s2_commit: COMMIT;
step s3_forkeyshr: SELECT * FROM dont_forget FOR KEY SHARE;
value
-----
    2
(1 row)

step s1_commit: COMMIT;

starting permutation: s1_lock s2_update s1_commit s3_forkeyshr s2_commit
step s1_lock: SELECT * FROM dont_forget FOR KEY SHARE;
value
-----
    1
(1 row)

step s2_update: UPDATE dont_forget SET value = 2;
step s1_commit: COMMIT;
step s3_forkeyshr: SELECT * FROM dont_forget FOR KEY SHARE;
value
-----
    1
(1 row)

step s2_commit: COMMIT;

starting permutation: s1_lock s2_update s2_abort s3_fornokeyupd s1_commit
step s1_lock: SELECT * FROM dont_forget FOR KEY SHARE;
value
-----
    1
(1 row)

step s2_update: UPDATE dont_forget SET value = 2;
step s2_abort: ROLLBACK;
step s3_fornokeyupd: SELECT * FROM dont_forget FOR NO KEY UPDATE;
value
-----
    1
(1 row)

step s1_commit: COMMIT;

starting permutation: s1_lock s2_update s2_commit s3_fornokeyupd s1_commit
step s1_lock: SELECT * FROM dont_forget FOR KEY SHARE;
value
-----
    1
(1 row)

step s2_update: UPDATE dont_forget SET value = 2;
step s2_commit: COMMIT;
step s3_fornokeyupd: SELECT * FROM dont_forget FOR NO KEY UPDATE;
value
-----
    2
(1 row)

step s1_commit: COMMIT;

starting permutation: s1_lock s2_update s1_commit s3_fornokeyupd s2_commit
step s1_lock: SELECT * FROM dont_forget FOR KEY SHARE;
value
-----
    1
(1 row)

step s2_update: UPDATE dont_forget SET value = 2;
step s1_commit: COMMIT;
step s3_fornokeyupd: SELECT * FROM dont_forget FOR NO KEY UPDATE; <waiting ...>
step s2_commit: COMMIT;
step s3_fornokeyupd: <... completed>
value
-----
    2
(1 row)


starting permutation: s1_lock s2_update s2_abort s3_forupd s1_commit
step s1_lock: SELECT * FROM dont_forget FOR KEY SHARE;
value
-----
    1
(1 row)

step s2_update: UPDATE dont_forget SET value = 2;
step s2_abort: ROLLBACK;
step s3_forupd: SELECT * FROM dont_forget FOR UPDATE; <waiting ...>
step s1_commit: COMMIT;
step s3_forupd: <... completed>
value
-----
    1
(1 row)


starting permutation: s1_lock s2_update s2_commit s3_forupd s1_commit
step s1_lock: SELECT * FROM dont_forget FOR KEY SHARE;
value
-----
    1
(1 row)

step s2_update: UPDATE dont_forget SET value = 2;
step s2_commit: COMMIT;
step s3_forupd: SELECT * FROM dont_forget FOR UPDATE; <waiting ...>
step s1_commit: COMMIT;
step s3_forupd: <... completed>
value
-----
    2
(1 row)


starting permutation: s1_lock s2_update s1_commit s3_forupd s2_commit
step s1_lock: SELECT * FROM dont_forget FOR KEY SHARE;
value
-----
    1
(1 row)

step s2_update: UPDATE dont_forget SET value = 2;
step s1_commit: COMMIT;
step s3_forupd: SELECT * FROM dont_forget FOR UPDATE; <waiting ...>
step s2_commit: COMMIT;
step s3_forupd: <... completed>
value
-----
    2
(1 row)