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 3364.21 msec.}
{preprocessed for plai in 0.0 msec.}
{analyzed by plai using det with local-control off in 4.001 msec.}
{written file /tmp/tmpmD2XHx/prefix-fb_det_co.pl}
:- module(_1,[prefix/2],[assertions]).

:- entry prefix(A,B)
         : ground(B).

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

prefix(Xs,Ys) :-
        app(Xs,_1,Ys).

:- true pred app(_1,X,_2)
         : ( native_props:mshare([[_1],[X]]), var(X), ground([_2]), term(_1), term(X), gnd(_2) )
        => ( ground([_1,X,_2]), rt4(_1), gnd(X), gnd(_2) )
         + ( is_det, mut_exclusive ).

app([],X,X).
app([X|Xs],Ys,[X|Zs]) :-
        app(Xs,Ys,Zs).


:- regtype rt5/1.

rt5([]).
rt5([A|B]) :-
        gnd(A),
        rt5(B).


:- regtype rt4/1.

rt4([]).
rt4([A|B]) :-
        gnd(A),
        rt5(B).