TIME: 160


SCC: 28
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Global Ranking Function: nat(1*A+ -1*B)

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