sqlancer might get stuck during test-generation

[JonathanFoo0523]

Example: test case with seed 344013800

[JonathanFoo0523]

also seed 508736200

[JonathanFoo0523]

consider seed 2078924500. It cause OOM kill

[JonathanFoo0523]

3963454600 cause differential test to be killed by OOM