some fixes in init mdp

velocity_safety_no_formulas.prism

@@ -30,8 +30,8 @@ formula Hit_Gate = Gate_1 | Gate_2 | Gate_3 | Gate_4 | Gate_5;
 global move : [0..3];
 
 module skier
-  ski_position : [1..8] ;
-  //done : bool ;
+  ski_position : [1..8] init 4;
+  done : bool init false;
 
 
   [left]  !Safe & !Unsafe & !Hit_Gate & !Hit_Tree & move=0 & ski_position>1 -> (ski_position'=ski_position-1) & (move'=1);
@@ -39,7 +39,7 @@ module skier
   [noop]  !Safe & !Unsafe & !Hit_Gate & !Hit_Tree & move=0 -> (move'=1);
 
 
-  [done] Safe | Unsafe | Hit_Tree | Hit_Gate -> true;
+  [done] move=0 & (Safe | Unsafe | Hit_Tree | Hit_Gate) -> (done'=true);
 endmodule
 
 module updateY
@@ -58,7 +58,7 @@ module updateY
 endmodule
 
 module updateX
-  x : [minX..maxX] ;
+  x : [minX..maxX] init initX;
 
   [update_x]  move=3 & standstill>=8                                       -> (move'=0);
   [update_x]  move=3 & standstill<8 & (ski_position=4 | ski_position=5)    -> (move'=0);
@@ -74,8 +74,8 @@ module updateX
 endmodule
 
 rewards
-  Hit_Tree : -100;
-  Hit_Gate : -100;
-  Unsafe : -100;
+  !done & Hit_Tree : -100;
+  !done & Hit_Gate : -100;
+  !done & Unsafe : -100;
 endrewards