MAYBE
* Step 1: Failure MAYBE
  + Considered Problem:
      - Strict TRS:
          and(false(),false()) -> false()
          and(false(),true()) -> false()
          and(true(),false()) -> false()
          and(true(),true()) -> true()
          eq(apply(T,S),apply(Tp,Sp)) -> and(eq(T,Tp),eq(S,Sp))
          eq(apply(T,S),lambda(X,Tp)) -> false()
          eq(apply(T,S),var(L)) -> false()
          eq(cons(T,L),cons(Tp,Lp)) -> and(eq(T,Tp),eq(L,Lp))
          eq(cons(T,L),nil()) -> false()
          eq(lambda(X,T),apply(Tp,Sp)) -> false()
          eq(lambda(X,T),lambda(Xp,Tp)) -> and(eq(T,Tp),eq(X,Xp))
          eq(lambda(X,T),var(L)) -> false()
          eq(nil(),cons(T,L)) -> false()
          eq(nil(),nil()) -> true()
          eq(var(L),apply(T,S)) -> false()
          eq(var(L),lambda(X,T)) -> false()
          eq(var(L),var(Lp)) -> eq(L,Lp)
          if(false(),var(K),var(L)) -> var(L)
          if(true(),var(K),var(L)) -> var(K)
          ren(X,Y,apply(T,S)) -> apply(ren(X,Y,T),ren(X,Y,S))
          ren(X,Y,lambda(Z,T)) -> lambda(var(cons(X,cons(Y,cons(lambda(Z,T),nil()))))
                                        ,ren(X,Y,ren(Z,var(cons(X,cons(Y,cons(lambda(Z,T),nil())))),T)))
          ren(var(L),var(K),var(Lp)) -> if(eq(L,Lp),var(K),var(Lp))
      - Signature:
          {and/2,eq/2,if/3,ren/3} / {apply/2,cons/2,false/0,lambda/2,nil/0,true/0,var/1}
      - Obligation:
          innermost runtime complexity wrt. defined symbols {and,eq,if,ren} and constructors {apply,cons,false,lambda
          ,nil,true,var}
  + Applied Processor:
      EmptyProcessor
  + Details:
      The problem is still open.
MAYBE