TIME: 159


SCC: 5
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Global Ranking Function: nat(1*A+ -1*C+1)

  7_loop(A,B,C) :- 7_loop(D,E,F) [1*A+ -1*D=0,1*B+ -1*E=0,1*B+1*C+ -1*F=0,1*A+1*B+ -1*F>=0]
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