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diff --git a/src/test/isolation/expected/alter-table-1.out b/src/test/isolation/expected/alter-table-1.out
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--- /dev/null
+++ b/src/test/isolation/expected/alter-table-1.out
@@ -0,0 +1,3326 @@
+Parsed test spec with 2 sessions
+
+starting permutation: s1 at1 sc1 s2 at2 sc2 rx1 wx rx3 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: s1 at1 sc1 s2 at2 rx1 sc2 wx rx3 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc2: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: s1 at1 sc1 s2 at2 rx1 wx sc2 rx3 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step sc2: COMMIT;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: s1 at1 sc1 s2 at2 rx1 wx rx3 sc2 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 at1 sc1 s2 at2 rx1 wx rx3 c2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 sc1 s2 rx1 at2 sc2 wx rx3 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: s1 at1 sc1 s2 rx1 at2 wx sc2 rx3 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step wx: INSERT INTO b VALUES (0);
+step sc2: COMMIT;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: s1 at1 sc1 s2 rx1 at2 wx rx3 sc2 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 at1 sc1 s2 rx1 at2 wx rx3 c2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 sc1 s2 rx1 wx at2 sc2 rx3 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: s1 at1 sc1 s2 rx1 wx at2 rx3 sc2 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 at1 sc1 s2 rx1 wx at2 rx3 c2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 sc1 s2 rx1 wx rx3 at2 sc2 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 at1 sc1 s2 rx1 wx rx3 at2 c2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 sc1 s2 rx1 wx rx3 c2 at2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 sc1 rx1 s2 at2 sc2 wx rx3 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: s1 at1 sc1 rx1 s2 at2 wx sc2 rx3 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step wx: INSERT INTO b VALUES (0);
+step sc2: COMMIT;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: s1 at1 sc1 rx1 s2 at2 wx rx3 sc2 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 at1 sc1 rx1 s2 at2 wx rx3 c2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 sc1 rx1 s2 wx at2 sc2 rx3 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: s1 at1 sc1 rx1 s2 wx at2 rx3 sc2 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 at1 sc1 rx1 s2 wx at2 rx3 c2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 sc1 rx1 s2 wx rx3 at2 sc2 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 at1 sc1 rx1 s2 wx rx3 at2 c2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 sc1 rx1 s2 wx rx3 c2 at2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 sc1 rx1 wx s2 at2 sc2 rx3 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: s1 at1 sc1 rx1 wx s2 at2 rx3 sc2 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 at1 sc1 rx1 wx s2 at2 rx3 c2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 sc1 rx1 wx s2 rx3 at2 sc2 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 at1 sc1 rx1 wx s2 rx3 at2 c2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 sc1 rx1 wx s2 rx3 c2 at2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 sc1 rx1 wx rx3 s2 at2 sc2 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 at1 sc1 rx1 wx rx3 s2 at2 c2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 sc1 rx1 wx rx3 s2 c2 at2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step c2: COMMIT;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 sc1 rx1 wx rx3 c2 s2 at2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 rx1 sc1 s2 at2 sc2 wx rx3 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: s1 at1 rx1 sc1 s2 at2 wx sc2 rx3 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step wx: INSERT INTO b VALUES (0);
+step sc2: COMMIT;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: s1 at1 rx1 sc1 s2 at2 wx rx3 sc2 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 at1 rx1 sc1 s2 at2 wx rx3 c2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 rx1 sc1 s2 wx at2 sc2 rx3 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc1: COMMIT;
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: s1 at1 rx1 sc1 s2 wx at2 rx3 sc2 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc1: COMMIT;
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 at1 rx1 sc1 s2 wx at2 rx3 c2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc1: COMMIT;
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 rx1 sc1 s2 wx rx3 at2 sc2 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc1: COMMIT;
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 at1 rx1 sc1 s2 wx rx3 at2 c2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc1: COMMIT;
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 rx1 sc1 s2 wx rx3 c2 at2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc1: COMMIT;
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 rx1 sc1 wx s2 at2 sc2 rx3 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: s1 at1 rx1 sc1 wx s2 at2 rx3 sc2 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 at1 rx1 sc1 wx s2 at2 rx3 c2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 rx1 sc1 wx s2 rx3 at2 sc2 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 at1 rx1 sc1 wx s2 rx3 at2 c2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 rx1 sc1 wx s2 rx3 c2 at2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 rx1 sc1 wx rx3 s2 at2 sc2 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 at1 rx1 sc1 wx rx3 s2 at2 c2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 rx1 sc1 wx rx3 s2 c2 at2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step c2: COMMIT;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 rx1 sc1 wx rx3 c2 s2 at2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 rx1 wx sc1 s2 at2 sc2 rx3 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: s1 at1 rx1 wx sc1 s2 at2 rx3 sc2 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 at1 rx1 wx sc1 s2 at2 rx3 c2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 rx1 wx sc1 s2 rx3 at2 sc2 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 at1 rx1 wx sc1 s2 rx3 at2 c2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 rx1 wx sc1 s2 rx3 c2 at2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 rx1 wx sc1 rx3 s2 at2 sc2 c2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 at1 rx1 wx sc1 rx3 s2 at2 c2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 rx1 wx sc1 rx3 s2 c2 at2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step c2: COMMIT;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 at1 rx1 wx sc1 rx3 c2 s2 at2 sc2
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 rx1 at1 sc1 s2 at2 sc2 wx rx3 c2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: s1 rx1 at1 sc1 s2 at2 wx sc2 rx3 c2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step wx: INSERT INTO b VALUES (0);
+step sc2: COMMIT;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: s1 rx1 at1 sc1 s2 at2 wx rx3 sc2 c2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 rx1 at1 sc1 s2 at2 wx rx3 c2 sc2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 rx1 at1 sc1 s2 wx at2 sc2 rx3 c2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: s1 rx1 at1 sc1 s2 wx at2 rx3 sc2 c2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 rx1 at1 sc1 s2 wx at2 rx3 c2 sc2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 rx1 at1 sc1 s2 wx rx3 at2 sc2 c2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 rx1 at1 sc1 s2 wx rx3 at2 c2 sc2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 rx1 at1 sc1 s2 wx rx3 c2 at2 sc2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 rx1 at1 sc1 wx s2 at2 sc2 rx3 c2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: s1 rx1 at1 sc1 wx s2 at2 rx3 sc2 c2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 rx1 at1 sc1 wx s2 at2 rx3 c2 sc2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 rx1 at1 sc1 wx s2 rx3 at2 sc2 c2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 rx1 at1 sc1 wx s2 rx3 at2 c2 sc2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 rx1 at1 sc1 wx s2 rx3 c2 at2 sc2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 rx1 at1 sc1 wx rx3 s2 at2 sc2 c2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 rx1 at1 sc1 wx rx3 s2 at2 c2 sc2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 rx1 at1 sc1 wx rx3 s2 c2 at2 sc2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step c2: COMMIT;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 rx1 at1 sc1 wx rx3 c2 s2 at2 sc2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 rx1 at1 wx sc1 s2 at2 sc2 rx3 c2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: s1 rx1 at1 wx sc1 s2 at2 rx3 sc2 c2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 rx1 at1 wx sc1 s2 at2 rx3 c2 sc2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 rx1 at1 wx sc1 s2 rx3 at2 sc2 c2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 rx1 at1 wx sc1 s2 rx3 at2 c2 sc2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 rx1 at1 wx sc1 s2 rx3 c2 at2 sc2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 rx1 at1 wx sc1 rx3 s2 at2 sc2 c2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: s1 rx1 at1 wx sc1 rx3 s2 at2 c2 sc2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: s1 rx1 at1 wx sc1 rx3 s2 c2 at2 sc2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step c2: COMMIT;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 rx1 at1 wx sc1 rx3 c2 s2 at2 sc2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 rx1 wx at1 rx3 c2 sc1 s2 at2 sc2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID; <waiting ...>
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step at1: <... completed>
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 rx1 wx rx3 at1 c2 sc1 s2 at2 sc2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID; <waiting ...>
+step c2: COMMIT;
+step at1: <... completed>
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: s1 rx1 wx rx3 c2 at1 sc1 s2 at2 sc2
+step s1: BEGIN;
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: rx1 s1 at1 sc1 s2 at2 sc2 wx rx3 c2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: rx1 s1 at1 sc1 s2 at2 wx sc2 rx3 c2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step wx: INSERT INTO b VALUES (0);
+step sc2: COMMIT;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: rx1 s1 at1 sc1 s2 at2 wx rx3 sc2 c2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: rx1 s1 at1 sc1 s2 at2 wx rx3 c2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: rx1 s1 at1 sc1 s2 wx at2 sc2 rx3 c2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: rx1 s1 at1 sc1 s2 wx at2 rx3 sc2 c2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: rx1 s1 at1 sc1 s2 wx at2 rx3 c2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: rx1 s1 at1 sc1 s2 wx rx3 at2 sc2 c2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: rx1 s1 at1 sc1 s2 wx rx3 at2 c2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: rx1 s1 at1 sc1 s2 wx rx3 c2 at2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: rx1 s1 at1 sc1 wx s2 at2 sc2 rx3 c2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: rx1 s1 at1 sc1 wx s2 at2 rx3 sc2 c2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: rx1 s1 at1 sc1 wx s2 at2 rx3 c2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: rx1 s1 at1 sc1 wx s2 rx3 at2 sc2 c2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: rx1 s1 at1 sc1 wx s2 rx3 at2 c2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: rx1 s1 at1 sc1 wx s2 rx3 c2 at2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: rx1 s1 at1 sc1 wx rx3 s2 at2 sc2 c2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: rx1 s1 at1 sc1 wx rx3 s2 at2 c2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: rx1 s1 at1 sc1 wx rx3 s2 c2 at2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step c2: COMMIT;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: rx1 s1 at1 sc1 wx rx3 c2 s2 at2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: rx1 s1 at1 wx sc1 s2 at2 sc2 rx3 c2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+
+starting permutation: rx1 s1 at1 wx sc1 s2 at2 rx3 sc2 c2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: rx1 s1 at1 wx sc1 s2 at2 rx3 c2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: rx1 s1 at1 wx sc1 s2 rx3 at2 sc2 c2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: rx1 s1 at1 wx sc1 s2 rx3 at2 c2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: rx1 s1 at1 wx sc1 s2 rx3 c2 at2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step s2: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: rx1 s1 at1 wx sc1 rx3 s2 at2 sc2 c2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+step c2: COMMIT;
+
+starting permutation: rx1 s1 at1 wx sc1 rx3 s2 at2 c2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step c2: COMMIT;
+step sc2: COMMIT;
+
+starting permutation: rx1 s1 at1 wx sc1 rx3 s2 c2 at2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s2: BEGIN;
+step c2: COMMIT;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: rx1 s1 at1 wx sc1 rx3 c2 s2 at2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step wx: INSERT INTO b VALUES (0); <waiting ...>
+step sc1: COMMIT;
+step wx: <... completed>
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: rx1 s1 wx at1 rx3 c2 sc1 s2 at2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID; <waiting ...>
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step at1: <... completed>
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: rx1 s1 wx rx3 at1 c2 sc1 s2 at2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID; <waiting ...>
+step c2: COMMIT;
+step at1: <... completed>
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: rx1 s1 wx rx3 c2 at1 sc1 s2 at2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step s1: BEGIN;
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: rx1 wx s1 at1 rx3 c2 sc1 s2 at2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID; <waiting ...>
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step at1: <... completed>
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: rx1 wx s1 rx3 at1 c2 sc1 s2 at2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step s1: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID; <waiting ...>
+step c2: COMMIT;
+step at1: <... completed>
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: rx1 wx s1 rx3 c2 at1 sc1 s2 at2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step s1: BEGIN;
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: rx1 wx rx3 s1 at1 c2 sc1 s2 at2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID; <waiting ...>
+step c2: COMMIT;
+step at1: <... completed>
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: rx1 wx rx3 s1 c2 at1 sc1 s2 at2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step s1: BEGIN;
+step c2: COMMIT;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
+
+starting permutation: rx1 wx rx3 c2 s1 at1 sc1 s2 at2 sc2
+step rx1: SELECT * FROM b WHERE a_id = 1 LIMIT 1;
+a_id
+----
+ 1
+(1 row)
+
+step wx: INSERT INTO b VALUES (0);
+step rx3: SELECT * FROM b WHERE a_id = 3 LIMIT 3;
+a_id
+----
+ 3
+ 3
+ 3
+(3 rows)
+
+step c2: COMMIT;
+step s1: BEGIN;
+step at1: ALTER TABLE b ADD CONSTRAINT bfk FOREIGN KEY (a_id) REFERENCES a (i) NOT VALID;
+step sc1: COMMIT;
+step s2: BEGIN;
+step at2: ALTER TABLE b VALIDATE CONSTRAINT bfk;
+step sc2: COMMIT;
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-10 00:59:11 +0000