TIME: 160


SCC: 13
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Global Ranking Function: nat(1*A+ -1*B)

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