add lab3 exercises

lab3/examples/txt/evader.txt

@@ -0,0 +1,16 @@
+20 10 
+
+20 10 
+30 9 
+30 22 
+20 10 
+
+30 22 
+30 9 
+40 8 
+40 34 
+30 22 
+
+40 8 
+40 34 
+

lab3/examples/txt/evader_regions.txt

@@ -0,0 +1,4 @@
+region = evader.{
+ClkW & (x == 2 & p == 10 & e == 20 | e == 5*x + 20 & 6*e >= 5*p + 70 & e + 10*p >= 120 & e <= 30 | e == 5*x + 30 & e + 10*p >= 120 & 30 <= e <= 40 & 6*e >= 5*p + 70),
+Rescued & x == 2 & e == 40 & 8 <= p <= 34
+};