Parsed test spec with 2 sessions

starting permutation: rxy1 wx1 c1 wy2 rxy2 c2
step rxy1:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
9              a              1              
10             a              1              
step wx1:  update test_t set val2 = 2 where val2 = 1 and id = 10; 
step c1:  COMMIT; 
step wy2:  update test_t set val2 = 2 where val2 = 1 and id = 9; 
step rxy2:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
step c2:  COMMIT; 

starting permutation: rxy1 wx1 wy2 c1 rxy2 c2
step rxy1:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
9              a              1              
10             a              1              
step wx1:  update test_t set val2 = 2 where val2 = 1 and id = 10; 
step wy2:  update test_t set val2 = 2 where val2 = 1 and id = 9; 
step c1:  COMMIT; 
step rxy2:  select * from test_t where val2 = 1; 
ERROR:  could not serialize access due to read/write dependencies among transactions
step c2:  COMMIT; 

starting permutation: rxy1 wx1 wy2 rxy2 c1 c2
step rxy1:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
9              a              1              
10             a              1              
step wx1:  update test_t set val2 = 2 where val2 = 1 and id = 10; 
step wy2:  update test_t set val2 = 2 where val2 = 1 and id = 9; 
step rxy2:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
10             a              1              
step c1:  COMMIT; 
step c2:  COMMIT; 
ERROR:  could not serialize access due to read/write dependencies among transactions

starting permutation: rxy1 wx1 wy2 rxy2 c2 c1
step rxy1:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
9              a              1              
10             a              1              
step wx1:  update test_t set val2 = 2 where val2 = 1 and id = 10; 
step wy2:  update test_t set val2 = 2 where val2 = 1 and id = 9; 
step rxy2:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
10             a              1              
step c2:  COMMIT; 
step c1:  COMMIT; 
ERROR:  could not serialize access due to read/write dependencies among transactions

starting permutation: rxy1 wy2 wx1 c1 rxy2 c2
step rxy1:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
9              a              1              
10             a              1              
step wy2:  update test_t set val2 = 2 where val2 = 1 and id = 9; 
step wx1:  update test_t set val2 = 2 where val2 = 1 and id = 10; 
step c1:  COMMIT; 
step rxy2:  select * from test_t where val2 = 1; 
ERROR:  could not serialize access due to read/write dependencies among transactions
step c2:  COMMIT; 

starting permutation: rxy1 wy2 wx1 rxy2 c1 c2
step rxy1:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
9              a              1              
10             a              1              
step wy2:  update test_t set val2 = 2 where val2 = 1 and id = 9; 
step wx1:  update test_t set val2 = 2 where val2 = 1 and id = 10; 
step rxy2:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
10             a              1              
step c1:  COMMIT; 
step c2:  COMMIT; 
ERROR:  could not serialize access due to read/write dependencies among transactions

starting permutation: rxy1 wy2 wx1 rxy2 c2 c1
step rxy1:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
9              a              1              
10             a              1              
step wy2:  update test_t set val2 = 2 where val2 = 1 and id = 9; 
step wx1:  update test_t set val2 = 2 where val2 = 1 and id = 10; 
step rxy2:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
10             a              1              
step c2:  COMMIT; 
step c1:  COMMIT; 
ERROR:  could not serialize access due to read/write dependencies among transactions

starting permutation: rxy1 wy2 rxy2 wx1 c1 c2
step rxy1:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
9              a              1              
10             a              1              
step wy2:  update test_t set val2 = 2 where val2 = 1 and id = 9; 
step rxy2:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
10             a              1              
step wx1:  update test_t set val2 = 2 where val2 = 1 and id = 10; 
step c1:  COMMIT; 
step c2:  COMMIT; 
ERROR:  could not serialize access due to read/write dependencies among transactions

starting permutation: rxy1 wy2 rxy2 wx1 c2 c1
step rxy1:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
9              a              1              
10             a              1              
step wy2:  update test_t set val2 = 2 where val2 = 1 and id = 9; 
step rxy2:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
10             a              1              
step wx1:  update test_t set val2 = 2 where val2 = 1 and id = 10; 
step c2:  COMMIT; 
step c1:  COMMIT; 
ERROR:  could not serialize access due to read/write dependencies among transactions

starting permutation: rxy1 wy2 rxy2 c2 wx1 c1
step rxy1:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
9              a              1              
10             a              1              
step wy2:  update test_t set val2 = 2 where val2 = 1 and id = 9; 
step rxy2:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
10             a              1              
step c2:  COMMIT; 
step wx1:  update test_t set val2 = 2 where val2 = 1 and id = 10; 
ERROR:  could not serialize access due to read/write dependencies among transactions
step c1:  COMMIT; 

starting permutation: wy2 rxy1 wx1 c1 rxy2 c2
step wy2:  update test_t set val2 = 2 where val2 = 1 and id = 9; 
step rxy1:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
9              a              1              
10             a              1              
step wx1:  update test_t set val2 = 2 where val2 = 1 and id = 10; 
step c1:  COMMIT; 
step rxy2:  select * from test_t where val2 = 1; 
ERROR:  could not serialize access due to read/write dependencies among transactions
step c2:  COMMIT; 

starting permutation: wy2 rxy1 wx1 rxy2 c1 c2
step wy2:  update test_t set val2 = 2 where val2 = 1 and id = 9; 
step rxy1:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
9              a              1              
10             a              1              
step wx1:  update test_t set val2 = 2 where val2 = 1 and id = 10; 
step rxy2:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
10             a              1              
step c1:  COMMIT; 
step c2:  COMMIT; 
ERROR:  could not serialize access due to read/write dependencies among transactions

starting permutation: wy2 rxy1 wx1 rxy2 c2 c1
step wy2:  update test_t set val2 = 2 where val2 = 1 and id = 9; 
step rxy1:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
9              a              1              
10             a              1              
step wx1:  update test_t set val2 = 2 where val2 = 1 and id = 10; 
step rxy2:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
10             a              1              
step c2:  COMMIT; 
step c1:  COMMIT; 
ERROR:  could not serialize access due to read/write dependencies among transactions

starting permutation: wy2 rxy1 rxy2 wx1 c1 c2
step wy2:  update test_t set val2 = 2 where val2 = 1 and id = 9; 
step rxy1:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
9              a              1              
10             a              1              
step rxy2:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
10             a              1              
step wx1:  update test_t set val2 = 2 where val2 = 1 and id = 10; 
step c1:  COMMIT; 
step c2:  COMMIT; 
ERROR:  could not serialize access due to read/write dependencies among transactions

starting permutation: wy2 rxy1 rxy2 wx1 c2 c1
step wy2:  update test_t set val2 = 2 where val2 = 1 and id = 9; 
step rxy1:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
9              a              1              
10             a              1              
step rxy2:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
10             a              1              
step wx1:  update test_t set val2 = 2 where val2 = 1 and id = 10; 
step c2:  COMMIT; 
step c1:  COMMIT; 
ERROR:  could not serialize access due to read/write dependencies among transactions

starting permutation: wy2 rxy1 rxy2 c2 wx1 c1
step wy2:  update test_t set val2 = 2 where val2 = 1 and id = 9; 
step rxy1:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
9              a              1              
10             a              1              
step rxy2:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
10             a              1              
step c2:  COMMIT; 
step wx1:  update test_t set val2 = 2 where val2 = 1 and id = 10; 
ERROR:  could not serialize access due to read/write dependencies among transactions
step c1:  COMMIT; 

starting permutation: wy2 rxy2 rxy1 wx1 c1 c2
step wy2:  update test_t set val2 = 2 where val2 = 1 and id = 9; 
step rxy2:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
10             a              1              
step rxy1:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
9              a              1              
10             a              1              
step wx1:  update test_t set val2 = 2 where val2 = 1 and id = 10; 
step c1:  COMMIT; 
step c2:  COMMIT; 
ERROR:  could not serialize access due to read/write dependencies among transactions

starting permutation: wy2 rxy2 rxy1 wx1 c2 c1
step wy2:  update test_t set val2 = 2 where val2 = 1 and id = 9; 
step rxy2:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
10             a              1              
step rxy1:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
9              a              1              
10             a              1              
step wx1:  update test_t set val2 = 2 where val2 = 1 and id = 10; 
step c2:  COMMIT; 
step c1:  COMMIT; 
ERROR:  could not serialize access due to read/write dependencies among transactions

starting permutation: wy2 rxy2 rxy1 c2 wx1 c1
step wy2:  update test_t set val2 = 2 where val2 = 1 and id = 9; 
step rxy2:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
10             a              1              
step rxy1:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
9              a              1              
10             a              1              
step c2:  COMMIT; 
step wx1:  update test_t set val2 = 2 where val2 = 1 and id = 10; 
ERROR:  could not serialize access due to read/write dependencies among transactions
step c1:  COMMIT; 

starting permutation: wy2 rxy2 c2 rxy1 wx1 c1
step wy2:  update test_t set val2 = 2 where val2 = 1 and id = 9; 
step rxy2:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
10             a              1              
step c2:  COMMIT; 
step rxy1:  select * from test_t where val2 = 1; 
id             val1           val2           

0              a              1              
1              a              1              
2              a              1              
3              a              1              
4              a              1              
5              a              1              
6              a              1              
7              a              1              
8              a              1              
10             a              1              
step wx1:  update test_t set val2 = 2 where val2 = 1 and id = 10; 
step c1:  COMMIT; 
