mdp formula AgentCannotMoveNorth = (xAgent=2&yAgent=1) | (xAgent=3&yAgent=1) | (xAgent=4&yAgent=1) | (xAgent=5&yAgent=1) | (xAgent=6&yAgent=1) | (xAgent=1&yAgent=1); formula AgentCannotMoveEast = (xAgent=6&yAgent=1) | (xAgent=6&yAgent=2) | (xAgent=6&yAgent=3) | (xAgent=6&yAgent=4) | (xAgent=6&yAgent=5); formula AgentCannotMoveSouth = (xAgent=1&yAgent=5) | (xAgent=2&yAgent=5) | (xAgent=3&yAgent=5) | (xAgent=4&yAgent=5) | (xAgent=5&yAgent=5) | (xAgent=6&yAgent=5); formula AgentCannotMoveWest = (xAgent=1&yAgent=2) | (xAgent=1&yAgent=3) | (xAgent=1&yAgent=4) | (xAgent=1&yAgent=5) | (xAgent=1&yAgent=1); formula AgentIsOnSlippery = false; formula AgentIsInLava = (xAgent=2&yAgent=2) | (xAgent=3&yAgent=2) | (xAgent=2&yAgent=3) | (xAgent=3&yAgent=3) | (xAgent=2&yAgent=4) | (xAgent=3&yAgent=4); formula AgentIsInLavaAndNotDone = AgentIsInLava & !AgentDone; label "AgentIsInLavaAndNotDone" = AgentIsInLava & !AgentDone; formula AgentIsInGoal = (xAgent=6&yAgent=5); formula AgentIsInGoalAndNotDone = AgentIsInGoal & !AgentDone; label "AgentIsInGoalAndNotDone" = AgentIsInGoal & !AgentDone; module Agent xAgent : [1..6] init 1; yAgent : [1..7] init 1; AgentDone : bool init false; viewAgent : [0..3] init 0; [Agent_turn_right] !AgentIsInGoal & !AgentIsInLava & !AgentIsOnSlippery -> (viewAgent'=mod(viewAgent + 1, 4)) ; [Agent_turn_left] !AgentIsInGoal & !AgentIsInLava & !AgentIsOnSlippery & viewAgent>0 -> (viewAgent'=viewAgent - 1) ; [Agent_turn_left] !AgentIsInGoal & !AgentIsInLava & !AgentIsOnSlippery & viewAgent=0 -> (viewAgent'=3) ; [Agent_move_north] viewAgent=3 & !AgentIsOnSlippery & !AgentIsInLava &!AgentIsInGoal & !AgentCannotMoveNorth -> (yAgent'=yAgent-1); [Agent_move_east] viewAgent=0 & !AgentIsOnSlippery & !AgentIsInLava &!AgentIsInGoal & !AgentCannotMoveEast -> (xAgent'=xAgent+1); [Agent_move_south] viewAgent=1 & !AgentIsOnSlippery & !AgentIsInLava &!AgentIsInGoal & !AgentCannotMoveSouth -> (yAgent'=yAgent+1); [Agent_move_west] viewAgent=2 & !AgentIsOnSlippery & !AgentIsInLava &!AgentIsInGoal & !AgentCannotMoveWest -> (xAgent'=xAgent-1); [Agent_done] AgentIsInGoal | AgentIsInLava -> (AgentDone'=true); endmodule