const int k;

Pmin=? [ F (s1=1&s2=1&s3=1&s4=1) & ( 8*agree1 + 4*agree2 + 2*agree3 + 1*agree4  = k) {"init"&pay>0}{min} ]
Pmax=? [ F (s1=1&s2=1&s3=1&s4=1) & ( 8*agree1 + 4*agree2 + 2*agree3 + 1*agree4  = k) {"init"&pay>0}{max} ]