Parsed test spec with 2 sessions

starting permutation: s1l s1svp s1d s1r s2l s1c s2c
step s1l: SELECT * FROM foo FOR KEY SHARE;
key|value
---+-----
  1|    1
(1 row)

step s1svp: SAVEPOINT f;
step s1d: SELECT * FROM foo FOR NO KEY UPDATE;
key|value
---+-----
  1|    1
(1 row)

step s1r: ROLLBACK TO f;
step s2l: SELECT * FROM foo FOR UPDATE; <waiting ...>
step s1c: COMMIT;
step s2l: <... completed>
key|value
---+-----
  1|    1
(1 row)

step s2c: COMMIT;

starting permutation: s1l s1svp s1d s2l s1r s1c s2c
step s1l: SELECT * FROM foo FOR KEY SHARE;
key|value
---+-----
  1|    1
(1 row)

step s1svp: SAVEPOINT f;
step s1d: SELECT * FROM foo FOR NO KEY UPDATE;
key|value
---+-----
  1|    1
(1 row)

step s2l: SELECT * FROM foo FOR UPDATE; <waiting ...>
step s1r: ROLLBACK TO f;
step s1c: COMMIT;
step s2l: <... completed>
key|value
---+-----
  1|    1
(1 row)

step s2c: COMMIT;

starting permutation: s1l s1svp s1d s1r s2l2 s1c s2c
step s1l: SELECT * FROM foo FOR KEY SHARE;
key|value
---+-----
  1|    1
(1 row)

step s1svp: SAVEPOINT f;
step s1d: SELECT * FROM foo FOR NO KEY UPDATE;
key|value
---+-----
  1|    1
(1 row)

step s1r: ROLLBACK TO f;
step s2l2: SELECT * FROM foo FOR NO KEY UPDATE;
key|value
---+-----
  1|    1
(1 row)

step s1c: COMMIT;
step s2c: COMMIT;

starting permutation: s1l s1svp s1d s2l2 s1r s1c s2c
step s1l: SELECT * FROM foo FOR KEY SHARE;
key|value
---+-----
  1|    1
(1 row)

step s1svp: SAVEPOINT f;
step s1d: SELECT * FROM foo FOR NO KEY UPDATE;
key|value
---+-----
  1|    1
(1 row)

step s2l2: SELECT * FROM foo FOR NO KEY UPDATE; <waiting ...>
step s1r: ROLLBACK TO f;
step s2l2: <... completed>
key|value
---+-----
  1|    1
(1 row)

step s1c: COMMIT;
step s2c: COMMIT;