Parsed test spec with 3 sessions

starting permutation: s1b s1s s2d s3i1 s1c
step s1b: BEGIN;
step s1s: SELECT * FROM d_lp_fk;
a
-
1
2
(2 rows)

step s2d: ALTER TABLE d_lp_fk DETACH PARTITION d_lp_fk_1 CONCURRENTLY; <waiting ...>
step s3i1: INSERT INTO d_lp_fk_r VALUES (1);
ERROR:  insert or update on table "d_lp_fk_r" violates foreign key constraint "d_lp_fk_r_a_fkey"
step s1c: COMMIT;
step s2d: <... completed>

starting permutation: s1b s1s s2d s3i2 s3i2 s1c
step s1b: BEGIN;
step s1s: SELECT * FROM d_lp_fk;
a
-
1
2
(2 rows)

step s2d: ALTER TABLE d_lp_fk DETACH PARTITION d_lp_fk_1 CONCURRENTLY; <waiting ...>
step s3i2: INSERT INTO d_lp_fk_r VALUES (2);
step s3i2: INSERT INTO d_lp_fk_r VALUES (2);
step s1c: COMMIT;
step s2d: <... completed>

starting permutation: s1b s1s s3i1 s2d s1c
step s1b: BEGIN;
step s1s: SELECT * FROM d_lp_fk;
a
-
1
2
(2 rows)

step s3i1: INSERT INTO d_lp_fk_r VALUES (1);
step s2d: ALTER TABLE d_lp_fk DETACH PARTITION d_lp_fk_1 CONCURRENTLY;
ERROR:  removing partition "d_lp_fk_1" violates foreign key constraint "d_lp_fk_r_a_fkey1"
step s1c: COMMIT;

starting permutation: s1b s1s s3i2 s2d s1c
step s1b: BEGIN;
step s1s: SELECT * FROM d_lp_fk;
a
-
1
2
(2 rows)

step s3i2: INSERT INTO d_lp_fk_r VALUES (2);
step s2d: ALTER TABLE d_lp_fk DETACH PARTITION d_lp_fk_1 CONCURRENTLY; <waiting ...>
step s1c: COMMIT;
step s2d: <... completed>

starting permutation: s1b s1s s3b s2d s3i1 s1c s3c
step s1b: BEGIN;
step s1s: SELECT * FROM d_lp_fk;
a
-
1
2
(2 rows)

step s3b: BEGIN;
step s2d: ALTER TABLE d_lp_fk DETACH PARTITION d_lp_fk_1 CONCURRENTLY; <waiting ...>
step s3i1: INSERT INTO d_lp_fk_r VALUES (1);
ERROR:  insert or update on table "d_lp_fk_r" violates foreign key constraint "d_lp_fk_r_a_fkey"
step s1c: COMMIT;
step s2d: <... completed>
step s3c: COMMIT;