Termination proof

1: switching to dependency pairs

The following set of initial dependency pairs has been identified.

active#( add( s( X ) , Y ) ) s#( add( X , Y ) )
active#( add( s( X ) , Y ) ) add#( X , Y )
active#( first( s( X ) , cons( Y , Z ) ) ) cons#( Y , first( X , Z ) )
active#( first( s( X ) , cons( Y , Z ) ) ) first#( X , Z )
active#( from( X ) ) cons#( X , from( s( X ) ) )
active#( from( X ) ) from#( s( X ) )
active#( from( X ) ) s#( X )
active#( and( X1 , X2 ) ) and#( active( X1 ) , X2 )
active#( and( X1 , X2 ) ) active#( X1 )
active#( if( X1 , X2 , X3 ) ) if#( active( X1 ) , X2 , X3 )
active#( if( X1 , X2 , X3 ) ) active#( X1 )
active#( add( X1 , X2 ) ) add#( active( X1 ) , X2 )
active#( add( X1 , X2 ) ) active#( X1 )
active#( first( X1 , X2 ) ) first#( active( X1 ) , X2 )
active#( first( X1 , X2 ) ) active#( X1 )
active#( first( X1 , X2 ) ) first#( X1 , active( X2 ) )
active#( first( X1 , X2 ) ) active#( X2 )
and#( mark( X1 ) , X2 ) and#( X1 , X2 )
if#( mark( X1 ) , X2 , X3 ) if#( X1 , X2 , X3 )
add#( mark( X1 ) , X2 ) add#( X1 , X2 )
first#( mark( X1 ) , X2 ) first#( X1 , X2 )
first#( X1 , mark( X2 ) ) first#( X1 , X2 )
proper#( and( X1 , X2 ) ) and#( proper( X1 ) , proper( X2 ) )
proper#( and( X1 , X2 ) ) proper#( X1 )
proper#( and( X1 , X2 ) ) proper#( X2 )
proper#( if( X1 , X2 , X3 ) ) if#( proper( X1 ) , proper( X2 ) , proper( X3 ) )
proper#( if( X1 , X2 , X3 ) ) proper#( X1 )
proper#( if( X1 , X2 , X3 ) ) proper#( X2 )
proper#( if( X1 , X2 , X3 ) ) proper#( X3 )
proper#( add( X1 , X2 ) ) add#( proper( X1 ) , proper( X2 ) )
proper#( add( X1 , X2 ) ) proper#( X1 )
proper#( add( X1 , X2 ) ) proper#( X2 )
proper#( s( X ) ) s#( proper( X ) )
proper#( s( X ) ) proper#( X )
proper#( first( X1 , X2 ) ) first#( proper( X1 ) , proper( X2 ) )
proper#( first( X1 , X2 ) ) proper#( X1 )
proper#( first( X1 , X2 ) ) proper#( X2 )
proper#( cons( X1 , X2 ) ) cons#( proper( X1 ) , proper( X2 ) )
proper#( cons( X1 , X2 ) ) proper#( X1 )
proper#( cons( X1 , X2 ) ) proper#( X2 )
proper#( from( X ) ) from#( proper( X ) )
proper#( from( X ) ) proper#( X )
and#( ok( X1 ) , ok( X2 ) ) and#( X1 , X2 )
if#( ok( X1 ) , ok( X2 ) , ok( X3 ) ) if#( X1 , X2 , X3 )
add#( ok( X1 ) , ok( X2 ) ) add#( X1 , X2 )
s#( ok( X ) ) s#( X )
first#( ok( X1 ) , ok( X2 ) ) first#( X1 , X2 )
cons#( ok( X1 ) , ok( X2 ) ) cons#( X1 , X2 )
from#( ok( X ) ) from#( X )
top#( mark( X ) ) top#( proper( X ) )
top#( mark( X ) ) proper#( X )
top#( ok( X ) ) top#( active( X ) )
top#( ok( X ) ) active#( X )

1.1: dependency graph processor

The dependency pairs are split into 10 component(s).