eq(evalfstart(A,B),1,[evalfentryin(A,B)],[]).
eq(evalfreturnin(A,B),1,[evalfstop(A,B)],[]).
eq(evalfentryin(A,B),1,[evalfbb1in(B,A,C,D,E),loop_cont_evalfbb1in(D,E)],[C=0]).
eq(evalfentryin(A,B),1,[evalfbb1in(B,A,C,D,E)],[C=1]).
eq(loop_cont_evalfbb1in(A,B),0,[evalfreturnin(A,B)],[]).
eq(evalfbb1in(A,B,C,D,E),1,[evalfbbin(A,B,C,D,E)],[A>=B]).
eq(evalfbbin(A,B,C,D,E),1,[evalfbb1in(A,B+1,C,D,E)],[]).
eq(evalfbb1in(A,B,C,A,B),1,[],[C=0,B>=A+1]).