Before call p/3
First time of test_data_backtrack is OK
First time of test_table1: OK
First time of test_table2 is OK
PASSED tabled_attv
Second time (1) is OK
Second time (2) is OK
Second time (3) is OK
Second time of test_data_backtrack is OK
Second time of test_table1: OK
Second time of test_table2 is OK
in p/5: NewV2 = v2(22)
in p/5: V2 = v2(2)
