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mdp | 
				
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const int WIDTH = 5; | 
				
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const int HEIGHT = 5; | 
				
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const int XINIT = 3; | 
				
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const int YINIT = 1; | 
				
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 | 
				
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const int GOLD_TO_COLLECT; // Set to 0 to avoid unfolding | 
				
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const int GEM_TO_COLLECT; // Set to 0 to avoid unfolding | 
				
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const int B; | 
				
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const double pAttack = 1/10; | 
				
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formula left_of_gold = x=2 & y=5; | 
				
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formula right_of_gold = x=4 & y=5; | 
				
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formula below_of_gold = (x=3 & y=4); | 
				
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formula above_of_gold = false; | 
				
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formula left_of_gem = (x=4 & y=4); | 
				
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formula right_of_gem = false; | 
				
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formula below_of_gem = (x=5 & y=3); | 
				
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formula above_of_gem = (x=5 & y=5); | 
				
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formula left_of_home = x=2 & y=1; | 
				
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formula right_of_home = x=4 & y=1; | 
				
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formula above_of_home = x=3 & y=2; | 
				
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formula below_of_home = false; | 
				
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formula left_of_enemy = (x=3 & y=5) | (x=2 & y=4); | 
				
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formula right_of_enemy = (x=5 & y=5) | (x=4 & y=4); | 
				
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formula above_of_enemy = x=3 & y=5; | 
				
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formula below_of_enemy = (x=3 & y=3) | (x=4 & y=4); | 
				
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module robot | 
				
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	gold : bool init false; | 
				
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	gem : bool init false; | 
				
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	attacked : bool init false; | 
				
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	x : [1..WIDTH] init XINIT; | 
				
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	y : [1..HEIGHT] init YINIT; | 
				
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	[right] !left_of_enemy & x<WIDTH ->  (attacked'=false) & (x'=x+1) & (gold' = (gold & !left_of_home) | left_of_gold)   &  (gem' =  (gem & !left_of_home) | left_of_gem); | 
				
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	[left] !right_of_enemy & x>1 ->      (attacked'=false) & (x'=x-1) & (gold' = (gold & !right_of_home) | right_of_gold) & (gem' =  (gem & !right_of_home) | right_of_gem); | 
				
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	[top] !below_of_enemy & y<HEIGHT ->  (attacked'=false) & (y'=y+1) & (gold' = (gold & !below_of_home) | below_of_gold) & (gem' =  (gem & !below_of_home) | below_of_gem); | 
				
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	[down] !above_of_enemy & y>1 ->      (attacked'=false) & (y'=y-1) & (gold' = (gold & !above_of_home) | above_of_gold) & (gem' =  (gem & !above_of_home) | above_of_gem); | 
				
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 | 
				
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	[right] left_of_enemy & x<WIDTH -> pAttack : (attacked'=true) & (x'=XINIT) & (y'=YINIT) & (gold'=false) & (gem'=false) + (1-pAttack) : (attacked'=false) & (x'=x+1) & (gold' = (gold & !left_of_home) | left_of_gold) & (gem' =  (gem & !left_of_home) | left_of_gem); | 
				
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	[left] right_of_enemy & x>1 ->     pAttack : (attacked'=true) & (x'=XINIT) & (y'=YINIT) & (gold'=false) & (gem'=false) + (1-pAttack) : (attacked'=false) & (x'=x-1) & (gold' = (gold & !right_of_home) | right_of_gold) & (gem' =  (gem & !right_of_home) | right_of_gem); | 
				
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	[top] below_of_enemy & y<HEIGHT -> pAttack : (attacked'=true) & (x'=XINIT) & (y'=YINIT) & (gold'=false) & (gem'=false) + (1-pAttack) : (attacked'=false) & (y'=y+1) & (gold' = (gold & !below_of_home) | below_of_gold) & (gem' =  (gem & !below_of_home) | below_of_gem); | 
				
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	[down] above_of_enemy & y>1 ->     pAttack : (attacked'=true) & (x'=XINIT) & (y'=YINIT) & (gold'=false) & (gem'=false) + (1-pAttack) : (attacked'=false) & (y'=y-1) & (gold' = (gold & !above_of_home) | above_of_gold) & (gem' =  (gem & !above_of_home) | above_of_gem); | 
				
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endmodule | 
				
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 | 
				
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rewards "attacks" | 
				
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	attacked : 1; | 
				
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endrewards | 
				
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rewards "rew_gold" | 
				
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	[right] left_of_home & gold : 1; | 
				
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	[left] right_of_home & gold : 1; | 
				
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	[top] below_of_home & gold : 1; | 
				
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	[down] above_of_home & gold : 1; | 
				
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endrewards | 
				
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 | 
				
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rewards "rew_gem" | 
				
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	[right] left_of_home & gem : 1; | 
				
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	[left] right_of_home & gem : 1; | 
				
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	[top] below_of_home & gem : 1; | 
				
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	[down] above_of_home & gem: 1; | 
				
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endrewards | 
				
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 | 
				
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module goldcounter | 
				
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 | 
				
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	required_gold : [0..GOLD_TO_COLLECT] init GOLD_TO_COLLECT; | 
				
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	 | 
				
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	[right] true -> (required_gold'=max(0, required_gold - (left_of_home & gold  ? 1: 0))); | 
				
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	[left] true -> (required_gold'=max(0, required_gold - (right_of_home & gold ? 1 : 0))); | 
				
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	[top] true -> (required_gold'=max(0, required_gold - (below_of_home & gold ? 1 : 0))); | 
				
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	[down] true -> (required_gold'=max(0, required_gold - (above_of_home & gold ? 1 : 0))); | 
				
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endmodule | 
				
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module gemcounter | 
				
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	required_gem : [0..GEM_TO_COLLECT] init GEM_TO_COLLECT; | 
				
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	[right] true -> (required_gem'=max(0, required_gem - (left_of_home & gem  ? 1: 0))); | 
				
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	[left] true -> (required_gem'=max(0, required_gem - (right_of_home & gem ? 1 : 0))); | 
				
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	[top] true -> (required_gem'=max(0, required_gem - (below_of_home & gem ? 1 : 0))); | 
				
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	[down] true -> (required_gem'=max(0, required_gem - (above_of_home & gem ? 1 : 0))); | 
				
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endmodule | 
				
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 | 
				
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label "success" = required_gold=0 & required_gem=0; | 
				
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