MAYBE

Problem:
 not(and(x,y)) -> or(not(x),not(y))
 not(or(x,y)) -> and(not(x),not(y))
 and(x,or(y,z)) -> or(and(x,y),and(x,z))

Proof:
 DP Processor:
  DPs:
   not#(and(x,y)) -> not#(y)
   not#(and(x,y)) -> not#(x)
   not#(or(x,y)) -> not#(y)
   not#(or(x,y)) -> not#(x)
   not#(or(x,y)) -> and#(not(x),not(y))
   and#(x,or(y,z)) -> and#(x,z)
   and#(x,or(y,z)) -> and#(x,y)
  TRS:
   not(and(x,y)) -> or(not(x),not(y))
   not(or(x,y)) -> and(not(x),not(y))
   and(x,or(y,z)) -> or(and(x,y),and(x,z))
  EDG Processor:
   DPs:
    not#(and(x,y)) -> not#(y)
    not#(and(x,y)) -> not#(x)
    not#(or(x,y)) -> not#(y)
    not#(or(x,y)) -> not#(x)
    not#(or(x,y)) -> and#(not(x),not(y))
    and#(x,or(y,z)) -> and#(x,z)
    and#(x,or(y,z)) -> and#(x,y)
   TRS:
    not(and(x,y)) -> or(not(x),not(y))
    not(or(x,y)) -> and(not(x),not(y))
    and(x,or(y,z)) -> or(and(x,y),and(x,z))
   graph:
    and#(x,or(y,z)) -> and#(x,z) -> and#(x,or(y,z)) -> and#(x,z)
    and#(x,or(y,z)) -> and#(x,z) -> and#(x,or(y,z)) -> and#(x,y)
    and#(x,or(y,z)) -> and#(x,y) -> and#(x,or(y,z)) -> and#(x,z)
    and#(x,or(y,z)) -> and#(x,y) ->
    and#(x,or(y,z)) -> and#(x,y)
    not#(or(x,y)) -> and#(not(x),not(y)) ->
    and#(x,or(y,z)) -> and#(x,z)
    not#(or(x,y)) -> and#(not(x),not(y)) -> and#(x,or(y,z)) -> and#(x,y)
    not#(or(x,y)) -> not#(y) -> not#(and(x,y)) -> not#(y)
    not#(or(x,y)) -> not#(y) -> not#(and(x,y)) -> not#(x)
    not#(or(x,y)) -> not#(y) -> not#(or(x,y)) -> not#(y)
    not#(or(x,y)) -> not#(y) -> not#(or(x,y)) -> not#(x)
    not#(or(x,y)) -> not#(y) -> not#(or(x,y)) -> and#(not(x),not(y))
    not#(or(x,y)) -> not#(x) -> not#(and(x,y)) -> not#(y)
    not#(or(x,y)) -> not#(x) -> not#(and(x,y)) -> not#(x)
    not#(or(x,y)) -> not#(x) -> not#(or(x,y)) -> not#(y)
    not#(or(x,y)) -> not#(x) -> not#(or(x,y)) -> not#(x)
    not#(or(x,y)) -> not#(x) -> not#(or(x,y)) -> and#(not(x),not(y))
    not#(and(x,y)) -> not#(y) -> not#(and(x,y)) -> not#(y)
    not#(and(x,y)) -> not#(y) -> not#(and(x,y)) -> not#(x)
    not#(and(x,y)) -> not#(y) -> not#(or(x,y)) -> not#(y)
    not#(and(x,y)) -> not#(y) -> not#(or(x,y)) -> not#(x)
    not#(and(x,y)) -> not#(y) -> not#(or(x,y)) -> and#(not(x),not(y))
    not#(and(x,y)) -> not#(x) -> not#(and(x,y)) -> not#(y)
    not#(and(x,y)) -> not#(x) -> not#(and(x,y)) -> not#(x)
    not#(and(x,y)) -> not#(x) -> not#(or(x,y)) -> not#(y)
    not#(and(x,y)) -> not#(x) -> not#(or(x,y)) -> not#(x)
    not#(and(x,y)) -> not#(x) -> not#(or(x,y)) -> and#(not(x),not(y))
   Restore Modifier:
    DPs:
     not#(and(x,y)) -> not#(y)
     not#(and(x,y)) -> not#(x)
     not#(or(x,y)) -> not#(y)
     not#(or(x,y)) -> not#(x)
     not#(or(x,y)) -> and#(not(x),not(y))
     and#(x,or(y,z)) -> and#(x,z)
     and#(x,or(y,z)) -> and#(x,y)
    TRS:
     not(and(x,y)) -> or(not(x),not(y))
     not(or(x,y)) -> and(not(x),not(y))
     and(x,or(y,z)) -> or(and(x,y),and(x,z))
    SCC Processor:
     #sccs: 2
     #rules: 6
     #arcs: 26/49
     DPs:
      not#(or(x,y)) -> not#(y)
      not#(or(x,y)) -> not#(x)
      not#(and(x,y)) -> not#(x)
      not#(and(x,y)) -> not#(y)
     TRS:
      not(and(x,y)) -> or(not(x),not(y))
      not(or(x,y)) -> and(not(x),not(y))
      and(x,or(y,z)) -> or(and(x,y),and(x,z))
     Open
     
     DPs:
      and#(x,or(y,z)) -> and#(x,z)
      and#(x,or(y,z)) -> and#(x,y)
     TRS:
      not(and(x,y)) -> or(not(x),not(y))
      not(or(x,y)) -> and(not(x),not(y))
      and(x,or(y,z)) -> or(and(x,y),and(x,z))
     Open