Ciao Preprocessor (integrated Alpha version)
 | This is an alpha distribution, meant only for testing. Please do let us 
 | know at ciaopp-bugclip.dia.fi.upm.es any problems you may have.

{loaded in 3376.21 msec.}
{preprocessed for plai in 0.0 msec.}
{analyzed by plai using det with local-control off in 4.0 msec.}
{written file /tmp/tmp_enQQi/sum-ffb_det_co.pl}
:- module(_1,[sum/3],[assertions]).

:- entry sum(A,B,C)
         : ground(C).

:- true pred sum(A,B,C)
         : ( native_props:mshare([[A],[A,B],[B]]), ground([C]), term(A), term(B), gnd(C) )
        => ( ground([A,B,C]), gnd(A), rt4(B), gnd(C) )
         + ( is_det, mut_exclusive ).

sum(X,0,X).
sum(X,s(Y),s(Z)) :-
        sum(X,Y,Z).


:- regtype rt5/1.

rt5(0).
rt5(s(A)) :-
        rt5(A).


:- regtype rt4/1.

rt4(0).
rt4(s(A)) :-
        rt5(A).