$ /opt/cperl-5.24.3c/bin/cperl -I. tbench1.pl x.tmp 2
cell count at start = 1500000
run benchmark for 2 ticks
cell count at end = 675003  <-- incorrect
time taken: 34 secs

$ /opt/cperl-5.26.1c/bin/cperl -I. tbench1.pl x.tmp 2
cell count at start = 1500000
run benchmark for 2 ticks
cell count at end = 675003  <-- incorrect
time taken: 34 secs