init
vars
active
redundant
irredundant
fixed 1
fixed 2
reserve 2
fixed 1
fixed 2
add 2
add 0
vars
active
redundant
irredundant
fixed 1
fixed 2
fixed -1
fixed -2
add 1
add 4
add 0
vars
active
redundant
irredundant
fixed 1
fixed 2
fixed -1
fixed -2
reset