/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.xml /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES Applying context closure of depth 1 in the following form: System R over Sigma maps to { fold(xly) -> fold(xry) | l -> r in R, x,y in Sigma } over Sigma^2, where fold(a_1,...,a_n) = (a_1,a_2)...(a_{n-1}a_{n}) Remains to prove termination of the 64-rule system { [A, A] [A, b] [b, A] -> [A, b] [b, a] [a, B] [B, A] [A, A] , [A, B] [B, a] [a, A] -> [A, a] [a, b] [b, A] [A, B] [B, A] , [A, A] [A, a] [a, A] -> [A, A] , [A, B] [B, b] [b, A] -> [A, A] , [A, A] [A, b] [b, b] -> [A, b] [b, a] [a, B] [B, A] [A, b] , [A, B] [B, a] [a, b] -> [A, a] [a, b] [b, A] [A, B] [B, b] , [A, A] [A, a] [a, b] -> [A, b] , [A, B] [B, b] [b, b] -> [A, b] , [A, A] [A, b] [b, a] -> [A, b] [b, a] [a, B] [B, A] [A, a] , [A, B] [B, a] [a, a] -> [A, a] [a, b] [b, A] [A, B] [B, a] , [A, A] [A, a] [a, a] -> [A, a] , [A, B] [B, b] [b, a] -> [A, a] , [A, A] [A, b] [b, B] -> [A, b] [b, a] [a, B] [B, A] [A, B] , [A, B] [B, a] [a, B] -> [A, a] [a, b] [b, A] [A, B] [B, B] , [A, A] [A, a] [a, B] -> [A, B] , [A, B] [B, b] [b, B] -> [A, B] , [b, A] [A, b] [b, A] -> [b, b] [b, a] [a, B] [B, A] [A, A] , [b, B] [B, a] [a, A] -> [b, a] [a, b] [b, A] [A, B] [B, A] , [b, A] [A, a] [a, A] -> [b, A] , [b, B] [B, b] [b, A] -> [b, A] , [b, A] [A, b] [b, b] -> [b, b] [b, a] [a, B] [B, A] [A, b] , [b, B] [B, a] [a, b] -> [b, a] [a, b] [b, A] [A, B] [B, b] , [b, A] [A, a] [a, b] -> [b, b] , [b, B] [B, b] [b, b] -> [b, b] , [b, A] [A, b] [b, a] -> [b, b] [b, a] [a, B] [B, A] [A, a] , [b, B] [B, a] [a, a] -> [b, a] [a, b] [b, A] [A, B] [B, a] , [b, A] [A, a] [a, a] -> [b, a] , [b, B] [B, b] [b, a] -> [b, a] , [b, A] [A, b] [b, B] -> [b, b] [b, a] [a, B] [B, A] [A, B] , [b, B] [B, a] [a, B] -> [b, a] [a, b] [b, A] [A, B] [B, B] , [b, A] [A, a] [a, B] -> [b, B] , [b, B] [B, b] [b, B] -> [b, B] , [a, A] [A, b] [b, A] -> [a, b] [b, a] [a, B] [B, A] [A, A] , [a, B] [B, a] [a, A] -> [a, a] [a, b] [b, A] [A, B] [B, A] , [a, A] [A, a] [a, A] -> [a, A] , [a, B] [B, b] [b, A] -> [a, A] , [a, A] [A, b] [b, b] -> [a, b] [b, a] [a, B] [B, A] [A, b] , [a, B] [B, a] [a, b] -> [a, a] [a, b] [b, A] [A, B] [B, b] , [a, A] [A, a] [a, b] -> [a, b] , [a, B] [B, b] [b, b] -> [a, b] , [a, A] [A, b] [b, a] -> [a, b] [b, a] [a, B] [B, A] [A, a] , [a, B] [B, a] [a, a] -> [a, a] [a, b] [b, A] [A, B] [B, a] , [a, A] [A, a] [a, a] -> [a, a] , [a, B] [B, b] [b, a] -> [a, a] , [a, A] [A, b] [b, B] -> [a, b] [b, a] [a, B] [B, A] [A, B] , [a, B] [B, a] [a, B] -> [a, a] [a, b] [b, A] [A, B] [B, B] , [a, A] [A, a] [a, B] -> [a, B] , [a, B] [B, b] [b, B] -> [a, B] , [B, A] [A, b] [b, A] -> [B, b] [b, a] [a, B] [B, A] [A, A] , [B, B] [B, a] [a, A] -> [B, a] [a, b] [b, A] [A, B] [B, A] , [B, A] [A, a] [a, A] -> [B, A] , [B, B] [B, b] [b, A] -> [B, A] , [B, A] [A, b] [b, b] -> [B, b] [b, a] [a, B] [B, A] [A, b] , [B, B] [B, a] [a, b] -> [B, a] [a, b] [b, A] [A, B] [B, b] , [B, A] [A, a] [a, b] -> [B, b] , [B, B] [B, b] [b, b] -> [B, b] , [B, A] [A, b] [b, a] -> [B, b] [b, a] [a, B] [B, A] [A, a] , [B, B] [B, a] [a, a] -> [B, a] [a, b] [b, A] [A, B] [B, a] , [B, A] [A, a] [a, a] -> [B, a] , [B, B] [B, b] [b, a] -> [B, a] , [B, A] [A, b] [b, B] -> [B, b] [b, a] [a, B] [B, A] [A, B] , [B, B] [B, a] [a, B] -> [B, a] [a, b] [b, A] [A, B] [B, B] , [B, A] [A, a] [a, B] -> [B, B] , [B, B] [B, b] [b, B] -> [B, B] } The system was filtered by the following matrix interpretation of type E_J with J = {1,...,2} and dimension 2: [A, A] is interpreted by / \ | 1 1 | | 0 1 | \ / [A, b] is interpreted by / \ | 1 1 | | 0 1 | \ / [b, A] is interpreted by / \ | 1 1 | | 0 1 | \ / [b, a] is interpreted by / \ | 1 0 | | 0 1 | \ / [a, B] is interpreted by / \ | 1 1 | | 0 1 | \ / [B, A] is interpreted by / \ | 1 0 | | 0 1 | \ / [A, B] is interpreted by / \ | 1 0 | | 0 1 | \ / [B, a] is interpreted by / \ | 1 1 | | 0 1 | \ / [a, A] is interpreted by / \ | 1 1 | | 0 1 | \ / [A, a] is interpreted by / \ | 1 0 | | 0 1 | \ / [a, b] is interpreted by / \ | 1 0 | | 0 1 | \ / [B, b] is interpreted by / \ | 1 0 | | 0 1 | \ / [b, b] is interpreted by / \ | 1 1 | | 0 1 | \ / [a, a] is interpreted by / \ | 1 1 | | 0 1 | \ / [b, B] is interpreted by / \ | 1 0 | | 0 1 | \ / [B, B] is interpreted by / \ | 1 1 | | 0 1 | \ / Remains to prove termination of the 41-rule system { [A, A] [A, b] [b, A] -> [A, b] [b, a] [a, B] [B, A] [A, A] , [A, B] [B, b] [b, A] -> [A, A] , [A, A] [A, b] [b, b] -> [A, b] [b, a] [a, B] [B, A] [A, b] , [A, B] [B, a] [a, b] -> [A, a] [a, b] [b, A] [A, B] [B, b] , [A, A] [A, a] [a, b] -> [A, b] , [A, B] [B, b] [b, b] -> [A, b] , [A, A] [A, b] [b, a] -> [A, b] [b, a] [a, B] [B, A] [A, a] , [A, B] [B, a] [a, a] -> [A, a] [a, b] [b, A] [A, B] [B, a] , [A, B] [B, b] [b, a] -> [A, a] , [A, A] [A, b] [b, B] -> [A, b] [b, a] [a, B] [B, A] [A, B] , [A, B] [B, a] [a, B] -> [A, a] [a, b] [b, A] [A, B] [B, B] , [A, B] [B, b] [b, B] -> [A, B] , [b, A] [A, b] [b, A] -> [b, b] [b, a] [a, B] [B, A] [A, A] , [b, B] [B, b] [b, A] -> [b, A] , [b, A] [A, b] [b, b] -> [b, b] [b, a] [a, B] [B, A] [A, b] , [b, B] [B, a] [a, b] -> [b, a] [a, b] [b, A] [A, B] [B, b] , [b, A] [A, a] [a, b] -> [b, b] , [b, B] [B, b] [b, b] -> [b, b] , [b, A] [A, b] [b, a] -> [b, b] [b, a] [a, B] [B, A] [A, a] , [b, B] [B, a] [a, a] -> [b, a] [a, b] [b, A] [A, B] [B, a] , [b, B] [B, b] [b, a] -> [b, a] , [b, A] [A, b] [b, B] -> [b, b] [b, a] [a, B] [B, A] [A, B] , [b, B] [B, a] [a, B] -> [b, a] [a, b] [b, A] [A, B] [B, B] , [b, B] [B, b] [b, B] -> [b, B] , [a, B] [B, a] [a, b] -> [a, a] [a, b] [b, A] [A, B] [B, b] , [a, B] [B, a] [a, a] -> [a, a] [a, b] [b, A] [A, B] [B, a] , [a, B] [B, b] [b, a] -> [a, a] , [a, B] [B, a] [a, B] -> [a, a] [a, b] [b, A] [A, B] [B, B] , [a, B] [B, b] [b, B] -> [a, B] , [B, A] [A, b] [b, A] -> [B, b] [b, a] [a, B] [B, A] [A, A] , [B, A] [A, b] [b, b] -> [B, b] [b, a] [a, B] [B, A] [A, b] , [B, B] [B, a] [a, b] -> [B, a] [a, b] [b, A] [A, B] [B, b] , [B, A] [A, a] [a, b] -> [B, b] , [B, A] [A, b] [b, a] -> [B, b] [b, a] [a, B] [B, A] [A, a] , [B, B] [B, a] [a, a] -> [B, a] [a, b] [b, A] [A, B] [B, a] , [B, A] [A, a] [a, a] -> [B, a] , [B, B] [B, b] [b, a] -> [B, a] , [B, A] [A, b] [b, B] -> [B, b] [b, a] [a, B] [B, A] [A, B] , [B, B] [B, a] [a, B] -> [B, a] [a, b] [b, A] [A, B] [B, B] , [B, A] [A, a] [a, B] -> [B, B] , [B, B] [B, b] [b, B] -> [B, B] } The system was filtered by the following matrix interpretation of type E_J with J = {1,...,2} and dimension 2: [A, A] is interpreted by / \ | 1 0 | | 0 1 | \ / [A, b] is interpreted by / \ | 1 0 | | 0 1 | \ / [b, A] is interpreted by / \ | 1 0 | | 0 1 | \ / [b, a] is interpreted by / \ | 1 0 | | 0 1 | \ / [a, B] is interpreted by / \ | 1 0 | | 0 1 | \ / [B, A] is interpreted by / \ | 1 0 | | 0 1 | \ / [A, B] is interpreted by / \ | 1 0 | | 0 1 | \ / [B, a] is interpreted by / \ | 1 0 | | 0 1 | \ / [a, A] is interpreted by / \ | 1 0 | | 0 1 | \ / [A, a] is interpreted by / \ | 1 0 | | 0 1 | \ / [a, b] is interpreted by / \ | 1 0 | | 0 1 | \ / [B, b] is interpreted by / \ | 1 0 | | 0 1 | \ / [b, b] is interpreted by / \ | 1 0 | | 0 1 | \ / [a, a] is interpreted by / \ | 1 0 | | 0 1 | \ / [b, B] is interpreted by / \ | 1 1 | | 0 1 | \ / [B, B] is interpreted by / \ | 1 0 | | 0 1 | \ / Remains to prove termination of the 28-rule system { [A, A] [A, b] [b, A] -> [A, b] [b, a] [a, B] [B, A] [A, A] , [A, B] [B, b] [b, A] -> [A, A] , [A, A] [A, b] [b, b] -> [A, b] [b, a] [a, B] [B, A] [A, b] , [A, B] [B, a] [a, b] -> [A, a] [a, b] [b, A] [A, B] [B, b] , [A, A] [A, a] [a, b] -> [A, b] , [A, B] [B, b] [b, b] -> [A, b] , [A, A] [A, b] [b, a] -> [A, b] [b, a] [a, B] [B, A] [A, a] , [A, B] [B, a] [a, a] -> [A, a] [a, b] [b, A] [A, B] [B, a] , [A, B] [B, b] [b, a] -> [A, a] , [A, B] [B, a] [a, B] -> [A, a] [a, b] [b, A] [A, B] [B, B] , [b, A] [A, b] [b, A] -> [b, b] [b, a] [a, B] [B, A] [A, A] , [b, A] [A, b] [b, b] -> [b, b] [b, a] [a, B] [B, A] [A, b] , [b, A] [A, a] [a, b] -> [b, b] , [b, A] [A, b] [b, a] -> [b, b] [b, a] [a, B] [B, A] [A, a] , [a, B] [B, a] [a, b] -> [a, a] [a, b] [b, A] [A, B] [B, b] , [a, B] [B, a] [a, a] -> [a, a] [a, b] [b, A] [A, B] [B, a] , [a, B] [B, b] [b, a] -> [a, a] , [a, B] [B, a] [a, B] -> [a, a] [a, b] [b, A] [A, B] [B, B] , [B, A] [A, b] [b, A] -> [B, b] [b, a] [a, B] [B, A] [A, A] , [B, A] [A, b] [b, b] -> [B, b] [b, a] [a, B] [B, A] [A, b] , [B, B] [B, a] [a, b] -> [B, a] [a, b] [b, A] [A, B] [B, b] , [B, A] [A, a] [a, b] -> [B, b] , [B, A] [A, b] [b, a] -> [B, b] [b, a] [a, B] [B, A] [A, a] , [B, B] [B, a] [a, a] -> [B, a] [a, b] [b, A] [A, B] [B, a] , [B, A] [A, a] [a, a] -> [B, a] , [B, B] [B, b] [b, a] -> [B, a] , [B, B] [B, a] [a, B] -> [B, a] [a, b] [b, A] [A, B] [B, B] , [B, A] [A, a] [a, B] -> [B, B] } The dependency pairs transformation was applied. Remains to prove termination of the 72-rule system { ([A, A],true) ([A, b],false) ([b, A],false) -> ([a, B],true) ([B, A],false) ([A, A],false) , ([A, A],true) ([A, b],false) ([b, A],false) -> ([B, A],true) ([A, A],false) , ([A, A],true) ([A, b],false) ([b, A],false) -> ([A, A],true) , ([A, B],true) ([B, b],false) ([b, A],false) -> ([A, A],true) , ([A, A],true) ([A, b],false) ([b, b],false) -> ([a, B],true) ([B, A],false) ([A, b],false) , ([A, A],true) ([A, b],false) ([b, b],false) -> ([B, A],true) ([A, b],false) , ([A, B],true) ([B, a],false) ([a, b],false) -> ([b, A],true) ([A, B],false) ([B, b],false) , ([A, B],true) ([B, a],false) ([a, b],false) -> ([A, B],true) ([B, b],false) , ([A, A],true) ([A, b],false) ([b, a],false) -> ([a, B],true) ([B, A],false) ([A, a],false) , ([A, A],true) ([A, b],false) ([b, a],false) -> ([B, A],true) ([A, a],false) , ([A, B],true) ([B, a],false) ([a, a],false) -> ([b, A],true) ([A, B],false) ([B, a],false) , ([A, B],true) ([B, a],false) ([a, a],false) -> ([A, B],true) ([B, a],false) , ([A, B],true) ([B, a],false) ([a, B],false) -> ([b, A],true) ([A, B],false) ([B, B],false) , ([A, B],true) ([B, a],false) ([a, B],false) -> ([A, B],true) ([B, B],false) , ([A, B],true) ([B, a],false) ([a, B],false) -> ([B, B],true) , ([b, A],true) ([A, b],false) ([b, A],false) -> ([a, B],true) ([B, A],false) ([A, A],false) , ([b, A],true) ([A, b],false) ([b, A],false) -> ([B, A],true) ([A, A],false) , ([b, A],true) ([A, b],false) ([b, A],false) -> ([A, A],true) , ([b, A],true) ([A, b],false) ([b, b],false) -> ([a, B],true) ([B, A],false) ([A, b],false) , ([b, A],true) ([A, b],false) ([b, b],false) -> ([B, A],true) ([A, b],false) , ([b, A],true) ([A, b],false) ([b, a],false) -> ([a, B],true) ([B, A],false) ([A, a],false) , ([b, A],true) ([A, b],false) ([b, a],false) -> ([B, A],true) ([A, a],false) , ([a, B],true) ([B, a],false) ([a, b],false) -> ([b, A],true) ([A, B],false) ([B, b],false) , ([a, B],true) ([B, a],false) ([a, b],false) -> ([A, B],true) ([B, b],false) , ([a, B],true) ([B, a],false) ([a, a],false) -> ([b, A],true) ([A, B],false) ([B, a],false) , ([a, B],true) ([B, a],false) ([a, a],false) -> ([A, B],true) ([B, a],false) , ([a, B],true) ([B, a],false) ([a, B],false) -> ([b, A],true) ([A, B],false) ([B, B],false) , ([a, B],true) ([B, a],false) ([a, B],false) -> ([A, B],true) ([B, B],false) , ([a, B],true) ([B, a],false) ([a, B],false) -> ([B, B],true) , ([B, A],true) ([A, b],false) ([b, A],false) -> ([a, B],true) ([B, A],false) ([A, A],false) , ([B, A],true) ([A, b],false) ([b, A],false) -> ([B, A],true) ([A, A],false) , ([B, A],true) ([A, b],false) ([b, A],false) -> ([A, A],true) , ([B, A],true) ([A, b],false) ([b, b],false) -> ([a, B],true) ([B, A],false) ([A, b],false) , ([B, A],true) ([A, b],false) ([b, b],false) -> ([B, A],true) ([A, b],false) , ([B, B],true) ([B, a],false) ([a, b],false) -> ([b, A],true) ([A, B],false) ([B, b],false) , ([B, B],true) ([B, a],false) ([a, b],false) -> ([A, B],true) ([B, b],false) , ([B, A],true) ([A, b],false) ([b, a],false) -> ([a, B],true) ([B, A],false) ([A, a],false) , ([B, A],true) ([A, b],false) ([b, a],false) -> ([B, A],true) ([A, a],false) , ([B, B],true) ([B, a],false) ([a, a],false) -> ([b, A],true) ([A, B],false) ([B, a],false) , ([B, B],true) ([B, a],false) ([a, a],false) -> ([A, B],true) ([B, a],false) , ([B, B],true) ([B, a],false) ([a, B],false) -> ([b, A],true) ([A, B],false) ([B, B],false) , ([B, B],true) ([B, a],false) ([a, B],false) -> ([A, B],true) ([B, B],false) , ([B, B],true) ([B, a],false) ([a, B],false) -> ([B, B],true) , ([B, A],true) ([A, a],false) ([a, B],false) -> ([B, B],true) , ([A, A],false) ([A, b],false) ([b, A],false) ->= ([A, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, A],false) , ([A, B],false) ([B, b],false) ([b, A],false) ->= ([A, A],false) , ([A, A],false) ([A, b],false) ([b, b],false) ->= ([A, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, b],false) , ([A, B],false) ([B, a],false) ([a, b],false) ->= ([A, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, b],false) , ([A, A],false) ([A, a],false) ([a, b],false) ->= ([A, b],false) , ([A, B],false) ([B, b],false) ([b, b],false) ->= ([A, b],false) , ([A, A],false) ([A, b],false) ([b, a],false) ->= ([A, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, a],false) , ([A, B],false) ([B, a],false) ([a, a],false) ->= ([A, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, a],false) , ([A, B],false) ([B, b],false) ([b, a],false) ->= ([A, a],false) , ([A, B],false) ([B, a],false) ([a, B],false) ->= ([A, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, B],false) , ([b, A],false) ([A, b],false) ([b, A],false) ->= ([b, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, A],false) , ([b, A],false) ([A, b],false) ([b, b],false) ->= ([b, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, b],false) , ([b, A],false) ([A, a],false) ([a, b],false) ->= ([b, b],false) , ([b, A],false) ([A, b],false) ([b, a],false) ->= ([b, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, a],false) , ([a, B],false) ([B, a],false) ([a, b],false) ->= ([a, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, b],false) , ([a, B],false) ([B, a],false) ([a, a],false) ->= ([a, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, a],false) , ([a, B],false) ([B, b],false) ([b, a],false) ->= ([a, a],false) , ([a, B],false) ([B, a],false) ([a, B],false) ->= ([a, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, B],false) , ([B, A],false) ([A, b],false) ([b, A],false) ->= ([B, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, A],false) , ([B, A],false) ([A, b],false) ([b, b],false) ->= ([B, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, b],false) , ([B, B],false) ([B, a],false) ([a, b],false) ->= ([B, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, b],false) , ([B, A],false) ([A, a],false) ([a, b],false) ->= ([B, b],false) , ([B, A],false) ([A, b],false) ([b, a],false) ->= ([B, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, a],false) , ([B, B],false) ([B, a],false) ([a, a],false) ->= ([B, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, a],false) , ([B, A],false) ([A, a],false) ([a, a],false) ->= ([B, a],false) , ([B, B],false) ([B, b],false) ([b, a],false) ->= ([B, a],false) , ([B, B],false) ([B, a],false) ([a, B],false) ->= ([B, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, B],false) , ([B, A],false) ([A, a],false) ([a, B],false) ->= ([B, B],false) } The system was filtered by the following matrix interpretation of type E_J with J = {1,...,2} and dimension 2: ([A, A],true) is interpreted by / \ | 1 1 | | 0 1 | \ / ([A, b],false) is interpreted by / \ | 1 1 | | 0 1 | \ / ([b, A],false) is interpreted by / \ | 1 1 | | 0 1 | \ / ([a, B],true) is interpreted by / \ | 1 1 | | 0 1 | \ / ([B, A],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([A, A],false) is interpreted by / \ | 1 1 | | 0 1 | \ / ([B, A],true) is interpreted by / \ | 1 0 | | 0 1 | \ / ([A, B],true) is interpreted by / \ | 1 1 | | 0 1 | \ / ([B, b],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([b, b],false) is interpreted by / \ | 1 1 | | 0 1 | \ / ([B, a],false) is interpreted by / \ | 1 1 | | 0 1 | \ / ([a, b],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([b, A],true) is interpreted by / \ | 1 0 | | 0 1 | \ / ([A, B],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([b, a],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([A, a],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([a, a],false) is interpreted by / \ | 1 1 | | 0 1 | \ / ([a, B],false) is interpreted by / \ | 1 1 | | 0 1 | \ / ([B, B],false) is interpreted by / \ | 1 1 | | 0 1 | \ / ([B, B],true) is interpreted by / \ | 1 1 | | 0 1 | \ / Remains to prove termination of the 35-rule system { ([b, A],true) ([A, b],false) ([b, A],false) -> ([a, B],true) ([B, A],false) ([A, A],false) , ([b, A],true) ([A, b],false) ([b, b],false) -> ([a, B],true) ([B, A],false) ([A, b],false) , ([b, A],true) ([A, b],false) ([b, a],false) -> ([a, B],true) ([B, A],false) ([A, a],false) , ([B, A],true) ([A, b],false) ([b, A],false) -> ([a, B],true) ([B, A],false) ([A, A],false) , ([B, A],true) ([A, b],false) ([b, b],false) -> ([a, B],true) ([B, A],false) ([A, b],false) , ([B, A],true) ([A, b],false) ([b, a],false) -> ([a, B],true) ([B, A],false) ([A, a],false) , ([B, A],true) ([A, a],false) ([a, B],false) -> ([B, B],true) , ([A, A],false) ([A, b],false) ([b, A],false) ->= ([A, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, A],false) , ([A, B],false) ([B, b],false) ([b, A],false) ->= ([A, A],false) , ([A, A],false) ([A, b],false) ([b, b],false) ->= ([A, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, b],false) , ([A, B],false) ([B, a],false) ([a, b],false) ->= ([A, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, b],false) , ([A, A],false) ([A, a],false) ([a, b],false) ->= ([A, b],false) , ([A, B],false) ([B, b],false) ([b, b],false) ->= ([A, b],false) , ([A, A],false) ([A, b],false) ([b, a],false) ->= ([A, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, a],false) , ([A, B],false) ([B, a],false) ([a, a],false) ->= ([A, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, a],false) , ([A, B],false) ([B, b],false) ([b, a],false) ->= ([A, a],false) , ([A, B],false) ([B, a],false) ([a, B],false) ->= ([A, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, B],false) , ([b, A],false) ([A, b],false) ([b, A],false) ->= ([b, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, A],false) , ([b, A],false) ([A, b],false) ([b, b],false) ->= ([b, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, b],false) , ([b, A],false) ([A, a],false) ([a, b],false) ->= ([b, b],false) , ([b, A],false) ([A, b],false) ([b, a],false) ->= ([b, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, a],false) , ([a, B],false) ([B, a],false) ([a, b],false) ->= ([a, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, b],false) , ([a, B],false) ([B, a],false) ([a, a],false) ->= ([a, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, a],false) , ([a, B],false) ([B, b],false) ([b, a],false) ->= ([a, a],false) , ([a, B],false) ([B, a],false) ([a, B],false) ->= ([a, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, B],false) , ([B, A],false) ([A, b],false) ([b, A],false) ->= ([B, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, A],false) , ([B, A],false) ([A, b],false) ([b, b],false) ->= ([B, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, b],false) , ([B, B],false) ([B, a],false) ([a, b],false) ->= ([B, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, b],false) , ([B, A],false) ([A, a],false) ([a, b],false) ->= ([B, b],false) , ([B, A],false) ([A, b],false) ([b, a],false) ->= ([B, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, a],false) , ([B, B],false) ([B, a],false) ([a, a],false) ->= ([B, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, a],false) , ([B, A],false) ([A, a],false) ([a, a],false) ->= ([B, a],false) , ([B, B],false) ([B, b],false) ([b, a],false) ->= ([B, a],false) , ([B, B],false) ([B, a],false) ([a, B],false) ->= ([B, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, B],false) , ([B, A],false) ([A, a],false) ([a, B],false) ->= ([B, B],false) } The system was filtered by the following matrix interpretation of type E_J with J = {1,...,2} and dimension 2: ([A, A],true) is interpreted by / \ | 1 0 | | 0 1 | \ / ([A, b],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([b, A],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([a, B],true) is interpreted by / \ | 1 0 | | 0 1 | \ / ([B, A],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([A, A],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([B, A],true) is interpreted by / \ | 1 1 | | 0 1 | \ / ([A, B],true) is interpreted by / \ | 1 0 | | 0 1 | \ / ([B, b],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([b, b],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([B, a],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([a, b],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([b, A],true) is interpreted by / \ | 1 0 | | 0 1 | \ / ([A, B],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([b, a],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([A, a],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([a, a],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([a, B],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([B, B],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([B, B],true) is interpreted by / \ | 1 0 | | 0 1 | \ / Remains to prove termination of the 31-rule system { ([b, A],true) ([A, b],false) ([b, A],false) -> ([a, B],true) ([B, A],false) ([A, A],false) , ([b, A],true) ([A, b],false) ([b, b],false) -> ([a, B],true) ([B, A],false) ([A, b],false) , ([b, A],true) ([A, b],false) ([b, a],false) -> ([a, B],true) ([B, A],false) ([A, a],false) , ([A, A],false) ([A, b],false) ([b, A],false) ->= ([A, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, A],false) , ([A, B],false) ([B, b],false) ([b, A],false) ->= ([A, A],false) , ([A, A],false) ([A, b],false) ([b, b],false) ->= ([A, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, b],false) , ([A, B],false) ([B, a],false) ([a, b],false) ->= ([A, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, b],false) , ([A, A],false) ([A, a],false) ([a, b],false) ->= ([A, b],false) , ([A, B],false) ([B, b],false) ([b, b],false) ->= ([A, b],false) , ([A, A],false) ([A, b],false) ([b, a],false) ->= ([A, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, a],false) , ([A, B],false) ([B, a],false) ([a, a],false) ->= ([A, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, a],false) , ([A, B],false) ([B, b],false) ([b, a],false) ->= ([A, a],false) , ([A, B],false) ([B, a],false) ([a, B],false) ->= ([A, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, B],false) , ([b, A],false) ([A, b],false) ([b, A],false) ->= ([b, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, A],false) , ([b, A],false) ([A, b],false) ([b, b],false) ->= ([b, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, b],false) , ([b, A],false) ([A, a],false) ([a, b],false) ->= ([b, b],false) , ([b, A],false) ([A, b],false) ([b, a],false) ->= ([b, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, a],false) , ([a, B],false) ([B, a],false) ([a, b],false) ->= ([a, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, b],false) , ([a, B],false) ([B, a],false) ([a, a],false) ->= ([a, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, a],false) , ([a, B],false) ([B, b],false) ([b, a],false) ->= ([a, a],false) , ([a, B],false) ([B, a],false) ([a, B],false) ->= ([a, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, B],false) , ([B, A],false) ([A, b],false) ([b, A],false) ->= ([B, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, A],false) , ([B, A],false) ([A, b],false) ([b, b],false) ->= ([B, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, b],false) , ([B, B],false) ([B, a],false) ([a, b],false) ->= ([B, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, b],false) , ([B, A],false) ([A, a],false) ([a, b],false) ->= ([B, b],false) , ([B, A],false) ([A, b],false) ([b, a],false) ->= ([B, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, a],false) , ([B, B],false) ([B, a],false) ([a, a],false) ->= ([B, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, a],false) , ([B, A],false) ([A, a],false) ([a, a],false) ->= ([B, a],false) , ([B, B],false) ([B, b],false) ([b, a],false) ->= ([B, a],false) , ([B, B],false) ([B, a],false) ([a, B],false) ->= ([B, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, B],false) , ([B, A],false) ([A, a],false) ([a, B],false) ->= ([B, B],false) } The system was filtered by the following matrix interpretation of type E_J with J = {1,...,2} and dimension 2: ([A, A],true) is interpreted by / \ | 1 0 | | 0 1 | \ / ([A, b],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([b, A],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([a, B],true) is interpreted by / \ | 1 0 | | 0 1 | \ / ([B, A],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([A, A],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([B, A],true) is interpreted by / \ | 1 0 | | 0 1 | \ / ([A, B],true) is interpreted by / \ | 1 0 | | 0 1 | \ / ([B, b],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([b, b],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([B, a],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([a, b],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([b, A],true) is interpreted by / \ | 1 1 | | 0 1 | \ / ([A, B],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([b, a],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([A, a],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([a, a],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([a, B],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([B, B],false) is interpreted by / \ | 1 0 | | 0 1 | \ / ([B, B],true) is interpreted by / \ | 1 0 | | 0 1 | \ / Remains to prove termination of the 28-rule system { ([A, A],false) ([A, b],false) ([b, A],false) ->= ([A, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, A],false) , ([A, B],false) ([B, b],false) ([b, A],false) ->= ([A, A],false) , ([A, A],false) ([A, b],false) ([b, b],false) ->= ([A, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, b],false) , ([A, B],false) ([B, a],false) ([a, b],false) ->= ([A, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, b],false) , ([A, A],false) ([A, a],false) ([a, b],false) ->= ([A, b],false) , ([A, B],false) ([B, b],false) ([b, b],false) ->= ([A, b],false) , ([A, A],false) ([A, b],false) ([b, a],false) ->= ([A, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, a],false) , ([A, B],false) ([B, a],false) ([a, a],false) ->= ([A, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, a],false) , ([A, B],false) ([B, b],false) ([b, a],false) ->= ([A, a],false) , ([A, B],false) ([B, a],false) ([a, B],false) ->= ([A, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, B],false) , ([b, A],false) ([A, b],false) ([b, A],false) ->= ([b, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, A],false) , ([b, A],false) ([A, b],false) ([b, b],false) ->= ([b, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, b],false) , ([b, A],false) ([A, a],false) ([a, b],false) ->= ([b, b],false) , ([b, A],false) ([A, b],false) ([b, a],false) ->= ([b, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, a],false) , ([a, B],false) ([B, a],false) ([a, b],false) ->= ([a, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, b],false) , ([a, B],false) ([B, a],false) ([a, a],false) ->= ([a, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, a],false) , ([a, B],false) ([B, b],false) ([b, a],false) ->= ([a, a],false) , ([a, B],false) ([B, a],false) ([a, B],false) ->= ([a, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, B],false) , ([B, A],false) ([A, b],false) ([b, A],false) ->= ([B, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, A],false) , ([B, A],false) ([A, b],false) ([b, b],false) ->= ([B, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, b],false) , ([B, B],false) ([B, a],false) ([a, b],false) ->= ([B, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, b],false) , ([B, A],false) ([A, a],false) ([a, b],false) ->= ([B, b],false) , ([B, A],false) ([A, b],false) ([b, a],false) ->= ([B, b],false) ([b, a],false) ([a, B],false) ([B, A],false) ([A, a],false) , ([B, B],false) ([B, a],false) ([a, a],false) ->= ([B, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, a],false) , ([B, A],false) ([A, a],false) ([a, a],false) ->= ([B, a],false) , ([B, B],false) ([B, b],false) ([b, a],false) ->= ([B, a],false) , ([B, B],false) ([B, a],false) ([a, B],false) ->= ([B, a],false) ([a, b],false) ([b, A],false) ([A, B],false) ([B, B],false) , ([B, A],false) ([A, a],false) ([a, B],false) ->= ([B, B],false) } The system is trivially terminating.