tempest/resources/examples/testfiles/pomdp/simple.prism

pomdp

observable "start" = s<3;
observable "end" = s>4;

const double slippery;

module main
    s : [0..6] init 0;
    [alpha] s=0 -> (1-slippery) * 0.7: (s'=1) + (1-slippery) * 0.3: (s'=2) + slippery: true;
    [alpha] s>0 & s<5 -> (1-slippery): (s'=s+2) + slippery: true;
    [beta]  s=3 -> (1-slippery): (s'=6)   + slippery: true;
    [beta]  s=4 -> (1-slippery): (s'=5) + slippery: true;
endmodule

rewards
    [alpha] s=3: 0.5;
    [beta] s=4: 0.5;
    true : s * 0.05;
endrewards


label "goal" = s=5;