Parsed test spec with 3 sessions

starting permutation: s1_plan s1_rr s1_count s1_plain s2_update s2_delete s2_insert s1_count s1_plain s3_count s3_plain s3_vacuum s1_plan s1_count s1_plain s3_count s3_plain s1_commit s1_count s1_plain
step s1_plan: EXPLAIN (COSTS OFF) SELECT count(*) FROM cpar WHERE a = 1 AND b;
QUERY PLAN                                                           
---------------------------------------------------------------------
Finalize Aggregate                                                   
  ->  Gather                                                         
        Workers Planned: 2                                           
        ->  Parallel Custom Scan (LionCount)                         
              Lion Indexes: cpar_abk.b (b = true), cpar_abk.a (a = 1)
(5 rows)

step s1_rr: BEGIN ISOLATION LEVEL REPEATABLE READ;
step s1_count: SELECT count(*) AS lion FROM cpar WHERE a = 1 AND b;
lion
----
4224
(1 row)

step s1_plain: SELECT cpar_plain() AS plain;
plain
-----
 4224
(1 row)

step s2_update: UPDATE cpar SET b = NOT b WHERE id % 9 = 0;
step s2_delete: DELETE FROM cpar WHERE a = 1 AND id % 13 = 0;
step s2_insert: INSERT INTO cpar SELECT 50000 + i, 1, true, i % 50, 'z'
					FROM generate_series(1, 3000) i;
step s1_count: SELECT count(*) AS lion FROM cpar WHERE a = 1 AND b;
lion
----
4224
(1 row)

step s1_plain: SELECT cpar_plain() AS plain;
plain
-----
 4224
(1 row)

step s3_count: SELECT count(*) AS lion FROM cpar WHERE a = 1 AND b;
lion
----
7098
(1 row)

step s3_plain: SELECT cpar_plain() AS plain;
plain
-----
 7098
(1 row)

step s3_vacuum: VACUUM cpar;
step s1_plan: EXPLAIN (COSTS OFF) SELECT count(*) FROM cpar WHERE a = 1 AND b;
QUERY PLAN                                                           
---------------------------------------------------------------------
Finalize Aggregate                                                   
  ->  Gather                                                         
        Workers Planned: 2                                           
        ->  Parallel Custom Scan (LionCount)                         
              Lion Indexes: cpar_abk.b (b = true), cpar_abk.a (a = 1)
(5 rows)

step s1_count: SELECT count(*) AS lion FROM cpar WHERE a = 1 AND b;
lion
----
4224
(1 row)

step s1_plain: SELECT cpar_plain() AS plain;
plain
-----
 4224
(1 row)

step s3_count: SELECT count(*) AS lion FROM cpar WHERE a = 1 AND b;
lion
----
7098
(1 row)

step s3_plain: SELECT cpar_plain() AS plain;
plain
-----
 7098
(1 row)

step s1_commit: COMMIT;
step s1_count: SELECT count(*) AS lion FROM cpar WHERE a = 1 AND b;
lion
----
7098
(1 row)

step s1_plain: SELECT cpar_plain() AS plain;
plain
-----
 7098
(1 row)


starting permutation: s1_ser s2_ser s1_plan s1_count s2_count s1_insert s2_insert1 s1_commit s2_commit
step s1_ser: BEGIN ISOLATION LEVEL SERIALIZABLE;
step s2_ser: BEGIN ISOLATION LEVEL SERIALIZABLE;
step s1_plan: EXPLAIN (COSTS OFF) SELECT count(*) FROM cpar WHERE a = 1 AND b;
QUERY PLAN                                                           
---------------------------------------------------------------------
Finalize Aggregate                                                   
  ->  Gather                                                         
        Workers Planned: 2                                           
        ->  Parallel Custom Scan (LionCount)                         
              Lion Indexes: cpar_abk.b (b = true), cpar_abk.a (a = 1)
(5 rows)

step s1_count: SELECT count(*) AS lion FROM cpar WHERE a = 1 AND b;
lion
----
4224
(1 row)

step s2_count: SELECT count(*) AS lion FROM cpar WHERE a = 1 AND b;
lion
----
4224
(1 row)

step s1_insert: INSERT INTO cpar VALUES (100001, 1, true, 7, 'y');
step s2_insert1: INSERT INTO cpar VALUES (100002, 1, true, 8, 'y');
step s1_commit: COMMIT;
step s2_commit: COMMIT;
ERROR:  could not serialize access due to read/write dependencies among transactions