TIME: 159


SCC: 7
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Global Ranking Function: nat(1*A+1*B)

  5_loop(A,B) :- 5_loop(C,D) [1*B+ -1*D=1,1*A+ -1*C=0,1*A+1*D>=0,-1*A>=0]
  5_loop(A,B) :- 5_loop(C,D) [1*A+ -1*C=1,1*B+ -1*D=0,1*A>=1,1*A+1*B>=1]
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