MAYBE
* Step 1: Failure MAYBE
  + Considered Problem:
      - Strict TRS:
          busy(fl,open(),down(),b1,b2,b3,i) -> incorrect()
          busy(fl,open(),up(),b1,b2,b3,i) -> incorrect()
          busy(B(),d,stop(),true(),b2,b3,i) -> idle(B(),open(),stop(),false(),b2,b3,i)
          busy(B(),closed(),down(),b1,b2,b3,i) -> idle(B(),closed(),stop(),b1,b2,b3,i)
          busy(B(),closed(),stop(),false(),false(),false(),empty()) -> correct()
          busy(B(),closed(),stop(),false(),false(),false(),newbuttons(i1,i2,i3,i)) -> idle(B()
                                                                                          ,closed()
                                                                                          ,stop()
                                                                                          ,false()
                                                                                          ,false()
                                                                                          ,false()
                                                                                          ,newbuttons(i1,i2,i3,i))
          busy(B(),closed(),stop(),false(),false(),true(),i) -> idle(B(),closed(),up(),false(),false(),true(),i)
          busy(B(),closed(),stop(),false(),true(),b3,i) -> idle(B(),closed(),up(),false(),true(),b3,i)
          busy(B(),closed(),up(),false(),b2,b3,i) -> idle(BF(),closed(),up(),false(),b2,b3,i)
          busy(B(),closed(),up(),true(),b2,b3,i) -> idle(B(),closed(),stop(),true(),b2,b3,i)
          busy(B(),open(),stop(),false(),b2,b3,i) -> idle(B(),closed(),stop(),false(),b2,b3,i)
          busy(BF(),d,stop(),b1,b2,b3,i) -> incorrect()
          busy(BF(),closed(),down(),b1,b2,b3,i) -> idle(B(),closed(),down(),b1,b2,b3,i)
          busy(BF(),closed(),up(),b1,b2,b3,i) -> idle(F(),closed(),up(),b1,b2,b3,i)
          busy(F(),d,stop(),b1,true(),b3,i) -> idle(F(),open(),stop(),b1,false(),b3,i)
          busy(F(),closed(),down(),b1,false(),b3,i) -> idle(BF(),closed(),down(),b1,false(),b3,i)
          busy(F(),closed(),down(),b1,true(),b3,i) -> idle(F(),closed(),stop(),b1,true(),b3,i)
          busy(F(),closed(),stop(),false(),false(),false(),empty()) -> correct()
          busy(F(),closed(),stop(),false(),false(),false(),newbuttons(i1,i2,i3,i)) -> idle(F()
                                                                                          ,closed()
                                                                                          ,stop()
                                                                                          ,false()
                                                                                          ,false()
                                                                                          ,false()
                                                                                          ,newbuttons(i1,i2,i3,i))
          busy(F(),closed(),stop(),false(),false(),true(),i) -> idle(F(),closed(),up(),false(),false(),true(),i)
          busy(F(),closed(),stop(),true(),false(),b3,i) -> idle(F(),closed(),down(),true(),false(),b3,i)
          busy(F(),closed(),up(),b1,false(),b3,i) -> idle(FS(),closed(),up(),b1,false(),b3,i)
          busy(F(),closed(),up(),b1,true(),b3,i) -> idle(F(),closed(),stop(),b1,true(),b3,i)
          busy(F(),open(),stop(),b1,false(),b3,i) -> idle(F(),closed(),stop(),b1,false(),b3,i)
          busy(FS(),d,stop(),b1,b2,b3,i) -> incorrect()
          busy(FS(),closed(),down(),b1,b2,b3,i) -> idle(F(),closed(),down(),b1,b2,b3,i)
          busy(FS(),closed(),up(),b1,b2,b3,i) -> idle(S(),closed(),up(),b1,b2,b3,i)
          busy(S(),d,stop(),b1,b2,true(),i) -> idle(S(),open(),stop(),b1,b2,false(),i)
          busy(S(),closed(),down(),b1,b2,false(),i) -> idle(FS(),closed(),down(),b1,b2,false(),i)
          busy(S(),closed(),down(),b1,b2,true(),i) -> idle(S(),closed(),stop(),b1,b2,true(),i)
          busy(S(),closed(),stop(),b1,true(),false(),i) -> idle(S(),closed(),down(),b1,true(),false(),i)
          busy(S(),closed(),stop(),false(),false(),false(),empty()) -> correct()
          busy(S(),closed(),stop(),false(),false(),false(),newbuttons(i1,i2,i3,i)) -> idle(S()
                                                                                          ,closed()
                                                                                          ,stop()
                                                                                          ,false()
                                                                                          ,false()
                                                                                          ,false()
                                                                                          ,newbuttons(i1,i2,i3,i))
          busy(S(),closed(),stop(),true(),false(),false(),i) -> idle(S(),closed(),down(),true(),false(),false(),i)
          busy(S(),closed(),up(),b1,b2,b3,i) -> idle(S(),closed(),stop(),b1,b2,b3,i)
          busy(S(),open(),stop(),b1,b2,false(),i) -> idle(S(),closed(),stop(),b1,b2,false(),i)
          idle(fl,d,m,b1,b2,b3,empty()) -> busy(fl,d,m,b1,b2,b3,empty())
          idle(fl,d,m,b1,b2,b3,newbuttons(i1,i2,i3,i)) -> busy(fl,d,m,or(b1,i1),or(b2,i2),or(b3,i3),i)
          or(false(),b) -> b
          or(true(),b) -> true()
          start(i) -> busy(F(),closed(),stop(),false(),false(),false(),i)
      - Signature:
          {busy/7,idle/7,or/2,start/1} / {B/0,BF/0,F/0,FS/0,S/0,closed/0,correct/0,down/0,empty/0,false/0,incorrect/0
          ,newbuttons/4,open/0,stop/0,true/0,up/0}
      - Obligation:
          innermost runtime complexity wrt. defined symbols {busy,idle,or,start} and constructors {B,BF,F,FS,S,closed
          ,correct,down,empty,false,incorrect,newbuttons,open,stop,true,up}
  + Applied Processor:
      NaturalPI {shape = Mixed 3, restrict = NoRestrict, uargs = UArgs, urules = URules, selector = Nothing}
  + Details:
      Incompatible
MAYBE