Parsed test spec with 2 sessions

starting permutation: s2l s1i s2i
step s2l: SELECT pg_advisory_lock(281457);
pg_advisory_lock
----------------
                
(1 row)

step s1i: 
		CREATE INDEX CONCURRENTLY mcic_one_pkey ON mcic_one (id)
		WHERE lck_shr(281457);
 <waiting ...>
step s2i: 
		CREATE INDEX CONCURRENTLY mcic_two_pkey ON mcic_two (id)
		WHERE unlck();
 <waiting ...>
step s1i: <... completed>
step s2i: <... completed>
unlck
-----
t    
(1 row)