Parsed test spec with 2 sessions

starting permutation: pruner_create_perm ll_start pruner_query_plan pruner_query pruner_query pruner_delete pruner_query pruner_query ll_commit pruner_drop
step pruner_create_perm: 
    CREATE TABLE horizons_tst (data int unique) WITH (autovacuum_enabled = off);
    INSERT INTO horizons_tst(data) VALUES(1),(2);

step ll_start: 
    BEGIN TRANSACTION ISOLATION LEVEL REPEATABLE READ;
    SELECT 1;

?column?
--------
       1
(1 row)

step pruner_query_plan: 
    EXPLAIN (COSTS OFF) SELECT * FROM horizons_tst ORDER BY data;

QUERY PLAN                                                 
-----------------------------------------------------------
Index Only Scan using horizons_tst_data_key on horizons_tst
(1 row)

step pruner_query: 
    SELECT explain_json($$
        EXPLAIN (FORMAT json, BUFFERS, ANALYZE)
	  SELECT * FROM horizons_tst ORDER BY data;$$)->0->'Plan'->'Heap Fetches';

?column?
--------
       2
(1 row)

step pruner_query: 
    SELECT explain_json($$
        EXPLAIN (FORMAT json, BUFFERS, ANALYZE)
	  SELECT * FROM horizons_tst ORDER BY data;$$)->0->'Plan'->'Heap Fetches';

?column?
--------
       2
(1 row)

step pruner_delete: 
    DELETE FROM horizons_tst;

step pruner_query: 
    SELECT explain_json($$
        EXPLAIN (FORMAT json, BUFFERS, ANALYZE)
	  SELECT * FROM horizons_tst ORDER BY data;$$)->0->'Plan'->'Heap Fetches';

?column?
--------
       2
(1 row)

step pruner_query: 
    SELECT explain_json($$
        EXPLAIN (FORMAT json, BUFFERS, ANALYZE)
	  SELECT * FROM horizons_tst ORDER BY data;$$)->0->'Plan'->'Heap Fetches';

?column?
--------
       2
(1 row)

step ll_commit: COMMIT;
step pruner_drop: 
    DROP TABLE horizons_tst;


starting permutation: pruner_create_temp ll_start pruner_query_plan pruner_query pruner_query pruner_delete pruner_query pruner_query ll_commit pruner_drop
step pruner_create_temp: 
    CREATE TEMPORARY TABLE horizons_tst (data int unique) WITH (autovacuum_enabled = off);
    INSERT INTO horizons_tst(data) VALUES(1),(2);

step ll_start: 
    BEGIN TRANSACTION ISOLATION LEVEL REPEATABLE READ;
    SELECT 1;

?column?
--------
       1
(1 row)

step pruner_query_plan: 
    EXPLAIN (COSTS OFF) SELECT * FROM horizons_tst ORDER BY data;

QUERY PLAN                                                 
-----------------------------------------------------------
Index Only Scan using horizons_tst_data_key on horizons_tst
(1 row)

step pruner_query: 
    SELECT explain_json($$
        EXPLAIN (FORMAT json, BUFFERS, ANALYZE)
	  SELECT * FROM horizons_tst ORDER BY data;$$)->0->'Plan'->'Heap Fetches';

?column?
--------
       2
(1 row)

step pruner_query: 
    SELECT explain_json($$
        EXPLAIN (FORMAT json, BUFFERS, ANALYZE)
	  SELECT * FROM horizons_tst ORDER BY data;$$)->0->'Plan'->'Heap Fetches';

?column?
--------
       2
(1 row)

step pruner_delete: 
    DELETE FROM horizons_tst;

step pruner_query: 
    SELECT explain_json($$
        EXPLAIN (FORMAT json, BUFFERS, ANALYZE)
	  SELECT * FROM horizons_tst ORDER BY data;$$)->0->'Plan'->'Heap Fetches';

?column?
--------
       2
(1 row)

step pruner_query: 
    SELECT explain_json($$
        EXPLAIN (FORMAT json, BUFFERS, ANALYZE)
	  SELECT * FROM horizons_tst ORDER BY data;$$)->0->'Plan'->'Heap Fetches';

?column?
--------
       0
(1 row)

step ll_commit: COMMIT;
step pruner_drop: 
    DROP TABLE horizons_tst;


starting permutation: pruner_create_temp ll_start pruner_query pruner_query pruner_begin pruner_delete pruner_query pruner_query ll_commit pruner_commit pruner_drop
step pruner_create_temp: 
    CREATE TEMPORARY TABLE horizons_tst (data int unique) WITH (autovacuum_enabled = off);
    INSERT INTO horizons_tst(data) VALUES(1),(2);

step ll_start: 
    BEGIN TRANSACTION ISOLATION LEVEL REPEATABLE READ;
    SELECT 1;

?column?
--------
       1
(1 row)

step pruner_query: 
    SELECT explain_json($$
        EXPLAIN (FORMAT json, BUFFERS, ANALYZE)
	  SELECT * FROM horizons_tst ORDER BY data;$$)->0->'Plan'->'Heap Fetches';

?column?
--------
       2
(1 row)

step pruner_query: 
    SELECT explain_json($$
        EXPLAIN (FORMAT json, BUFFERS, ANALYZE)
	  SELECT * FROM horizons_tst ORDER BY data;$$)->0->'Plan'->'Heap Fetches';

?column?
--------
       2
(1 row)

step pruner_begin: BEGIN;
step pruner_delete: 
    DELETE FROM horizons_tst;

step pruner_query: 
    SELECT explain_json($$
        EXPLAIN (FORMAT json, BUFFERS, ANALYZE)
	  SELECT * FROM horizons_tst ORDER BY data;$$)->0->'Plan'->'Heap Fetches';

?column?
--------
       2
(1 row)

step pruner_query: 
    SELECT explain_json($$
        EXPLAIN (FORMAT json, BUFFERS, ANALYZE)
	  SELECT * FROM horizons_tst ORDER BY data;$$)->0->'Plan'->'Heap Fetches';

?column?
--------
       2
(1 row)

step ll_commit: COMMIT;
step pruner_commit: COMMIT;
step pruner_drop: 
    DROP TABLE horizons_tst;


starting permutation: pruner_create_perm ll_start pruner_query pruner_query pruner_delete pruner_vacuum pruner_query pruner_query ll_commit pruner_drop
step pruner_create_perm: 
    CREATE TABLE horizons_tst (data int unique) WITH (autovacuum_enabled = off);
    INSERT INTO horizons_tst(data) VALUES(1),(2);

step ll_start: 
    BEGIN TRANSACTION ISOLATION LEVEL REPEATABLE READ;
    SELECT 1;

?column?
--------
       1
(1 row)

step pruner_query: 
    SELECT explain_json($$
        EXPLAIN (FORMAT json, BUFFERS, ANALYZE)
	  SELECT * FROM horizons_tst ORDER BY data;$$)->0->'Plan'->'Heap Fetches';

?column?
--------
       2
(1 row)

step pruner_query: 
    SELECT explain_json($$
        EXPLAIN (FORMAT json, BUFFERS, ANALYZE)
	  SELECT * FROM horizons_tst ORDER BY data;$$)->0->'Plan'->'Heap Fetches';

?column?
--------
       2
(1 row)

step pruner_delete: 
    DELETE FROM horizons_tst;

step pruner_vacuum: 
    VACUUM horizons_tst;

step pruner_query: 
    SELECT explain_json($$
        EXPLAIN (FORMAT json, BUFFERS, ANALYZE)
	  SELECT * FROM horizons_tst ORDER BY data;$$)->0->'Plan'->'Heap Fetches';

?column?
--------
       2
(1 row)

step pruner_query: 
    SELECT explain_json($$
        EXPLAIN (FORMAT json, BUFFERS, ANALYZE)
	  SELECT * FROM horizons_tst ORDER BY data;$$)->0->'Plan'->'Heap Fetches';

?column?
--------
       2
(1 row)

step ll_commit: COMMIT;
step pruner_drop: 
    DROP TABLE horizons_tst;


starting permutation: pruner_create_temp ll_start pruner_query pruner_query pruner_delete pruner_vacuum pruner_query pruner_query ll_commit pruner_drop
step pruner_create_temp: 
    CREATE TEMPORARY TABLE horizons_tst (data int unique) WITH (autovacuum_enabled = off);
    INSERT INTO horizons_tst(data) VALUES(1),(2);

step ll_start: 
    BEGIN TRANSACTION ISOLATION LEVEL REPEATABLE READ;
    SELECT 1;

?column?
--------
       1
(1 row)

step pruner_query: 
    SELECT explain_json($$
        EXPLAIN (FORMAT json, BUFFERS, ANALYZE)
	  SELECT * FROM horizons_tst ORDER BY data;$$)->0->'Plan'->'Heap Fetches';

?column?
--------
       2
(1 row)

step pruner_query: 
    SELECT explain_json($$
        EXPLAIN (FORMAT json, BUFFERS, ANALYZE)
	  SELECT * FROM horizons_tst ORDER BY data;$$)->0->'Plan'->'Heap Fetches';

?column?
--------
       2
(1 row)

step pruner_delete: 
    DELETE FROM horizons_tst;

step pruner_vacuum: 
    VACUUM horizons_tst;

step pruner_query: 
    SELECT explain_json($$
        EXPLAIN (FORMAT json, BUFFERS, ANALYZE)
	  SELECT * FROM horizons_tst ORDER BY data;$$)->0->'Plan'->'Heap Fetches';

?column?
--------
       0
(1 row)

step pruner_query: 
    SELECT explain_json($$
        EXPLAIN (FORMAT json, BUFFERS, ANALYZE)
	  SELECT * FROM horizons_tst ORDER BY data;$$)->0->'Plan'->'Heap Fetches';

?column?
--------
       0
(1 row)

step ll_commit: COMMIT;
step pruner_drop: 
    DROP TABLE horizons_tst;