label "hungry" = ((p1>0) & (p1<8)) | ((p2>0) & (p2<8)) | ((p3>0) & (p3<8)) | ((p4>0) & (p4<8)) | ((p5>0) & (p5<8)) | ((p6>0) & (p6<8)) | ((p7>0) & (p7<8)) | ((p8>0) & (p8<8)) | ((p9>0) & (p9<8)) | ((p10>0) & (p10<8)); label "eat" = (p1=8..9) | (p2=8..9) | (p3=8..9) | (p4=8..9) | (p5=8..9) | (p6=8..9) | (p7=8..9) | (p8=8..9) | (p9=8..9) | (p10=8..9); // liveness (if a philosopher is hungry then eventually some philosopher eats) "hungry" => P>=1 [ true U "eat"]