/export/starexec/sandbox/solver/bin/starexec_run_ttt2-1.17+nonreach /export/starexec/sandbox/benchmark/theBenchmark.xml /export/starexec/sandbox/output/output_files


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YES

Problem:
 strict:
  a(a(x1)) -> a(b(a(x1)))
 weak:
  b(x1) -> b(b(x1))

Proof:
 Arctic Interpretation Processor:
  dimension: 2
  interpretation:
             [0  -&]  
   [b](x0) = [-& -&]x0,
   
             [0 0]  
   [a](x0) = [1 4]x0
  orientation:
              [1 4]      [0 0]                
   a(a(x1)) = [5 8]x1 >= [1 1]x1 = a(b(a(x1)))
   
           [0  -&]      [0  -&]             
   b(x1) = [-& -&]x1 >= [-& -&]x1 = b(b(x1))
  problem:
   strict:
    
   weak:
    b(x1) -> b(b(x1))
  Qed