unknown

Initial ITS

Start location: l4
Program variables: result_4^0 x_5^0
   0: l0 -> l1 : result_4^0'=result_4^post1, x_5^0'=x_5^post1, (x_5^0-x_5^post1 == 0 /\ -result_4^post1+result_4^0 == 0), cost: 1
   1: l1 -> l2 : result_4^0'=result_4^post2, x_5^0'=x_5^post2, (-x_5^post2 <= 0 /\ result_4^0-result_4^post2 == 0 /\ 1+x_5^post2-x_5^0 == 0), cost: 1
   3: l1 -> l3 : result_4^0'=result_4^post4, x_5^0'=x_5^post4, (0 == 0 /\ 1+x_5^post4 <= 0 /\ 1-x_5^0+x_5^post4 == 0), cost: 1
   2: l2 -> l1 : result_4^0'=result_4^post3, x_5^0'=x_5^post3, (-result_4^post3+result_4^0 == 0 /\ x_5^0-x_5^post3 == 0), cost: 1
   4: l4 -> l0 : result_4^0'=result_4^post5, x_5^0'=x_5^post5, (result_4^0-result_4^post5 == 0 /\ -x_5^post5+x_5^0 == 0), cost: 1

Chained Linear Paths

Start location: l4
Program variables: result_4^0 x_5^0
   3: l1 -> l3 : result_4^0'=result_4^post4, x_5^0'=x_5^post4, (0 == 0 /\ 1+x_5^post4 <= 0 /\ 1-x_5^0+x_5^post4 == 0), cost: 1
   6: l1 -> l1 : result_4^0'=result_4^post3, x_5^0'=x_5^post3, (-x_5^post2 <= 0 /\ -result_4^post3+result_4^post2 == 0 /\ result_4^0-result_4^post2 == 0 /\ x_5^post2-x_5^post3 == 0 /\ 1+x_5^post2-x_5^0 == 0), cost: 1
   5: l4 -> l1 : result_4^0'=result_4^post1, x_5^0'=x_5^post1, (x_5^post5-x_5^post1 == 0 /\ result_4^0-result_4^post5 == 0 /\ -result_4^post1+result_4^post5 == 0 /\ -x_5^post5+x_5^0 == 0), cost: 1

	Eliminating location l0 by chaining:

	Applied chaining

	First rule:
	l4 -> l0 : result_4^0'=result_4^post5, x_5^0'=x_5^post5, (result_4^0-result_4^post5 == 0 /\ -x_5^post5+x_5^0 == 0), cost: 1
	Second rule:
	l0 -> l1 : result_4^0'=result_4^post1, x_5^0'=x_5^post1, (x_5^0-x_5^post1 == 0 /\ -result_4^post1+result_4^0 == 0), cost: 1
	New rule:
	l4 -> l1 : result_4^0'=result_4^post1, x_5^0'=x_5^post1, (x_5^post5-x_5^post1 == 0 /\ result_4^0-result_4^post5 == 0 /\ -result_4^post1+result_4^post5 == 0 /\ -x_5^post5+x_5^0 == 0), cost: 1
	
	Applied deletion

	Removed the following rules: 0 4
	
	Eliminating location l2 by chaining:

	Applied chaining

	First rule:
	l1 -> l2 : result_4^0'=result_4^post2, x_5^0'=x_5^post2, (-x_5^post2 <= 0 /\ result_4^0-result_4^post2 == 0 /\ 1+x_5^post2-x_5^0 == 0), cost: 1
	Second rule:
	l2 -> l1 : result_4^0'=result_4^post3, x_5^0'=x_5^post3, (-result_4^post3+result_4^0 == 0 /\ x_5^0-x_5^post3 == 0), cost: 1
	New rule:
	l1 -> l1 : result_4^0'=result_4^post3, x_5^0'=x_5^post3, (-x_5^post2 <= 0 /\ -result_4^post3+result_4^post2 == 0 /\ result_4^0-result_4^post2 == 0 /\ x_5^post2-x_5^post3 == 0 /\ 1+x_5^post2-x_5^0 == 0), cost: 1
	
	Applied deletion

	Removed the following rules: 1 2

Simplified Transitions

Start location: l4
Program variables: result_4^0 x_5^0
   7: l1 -> l3 : result_4^0'=result_4^post4, x_5^0'=-1+x_5^0, x_5^0 <= 0, cost: 1
   9: l1 -> l1 : x_5^0'=-1+x_5^0, 1-x_5^0 <= 0, cost: 1
   8: l4 -> l1 : T, cost: 1

	Propagated Equalities

	Original rule:
	l1 -> l3 : result_4^0'=result_4^post4, x_5^0'=x_5^post4, (0 == 0 /\ 1+x_5^post4 <= 0 /\ 1-x_5^0+x_5^post4 == 0), cost: 1
	New rule:
	l1 -> l3 : result_4^0'=result_4^post4, x_5^0'=-1+x_5^0, (0 == 0 /\ x_5^0 <= 0), cost: 1
	
		propagated equality x_5^post4 = -1+x_5^0
		
	Simplified Guard

	Original rule:
	l1 -> l3 : result_4^0'=result_4^post4, x_5^0'=-1+x_5^0, (0 == 0 /\ x_5^0 <= 0), cost: 1
	New rule:
	l1 -> l3 : result_4^0'=result_4^post4, x_5^0'=-1+x_5^0, x_5^0 <= 0, cost: 1
	
	Propagated Equalities

	Original rule:
	l4 -> l1 : result_4^0'=result_4^post1, x_5^0'=x_5^post1, (x_5^post5-x_5^post1 == 0 /\ result_4^0-result_4^post5 == 0 /\ -result_4^post1+result_4^post5 == 0 /\ -x_5^post5+x_5^0 == 0), cost: 1
	New rule:
	l4 -> l1 : result_4^0'=result_4^post5, x_5^0'=x_5^post5, (0 == 0 /\ result_4^0-result_4^post5 == 0 /\ -x_5^post5+x_5^0 == 0), cost: 1
	
		propagated equality x_5^post1 = x_5^post5
		
		propagated equality result_4^post1 = result_4^post5
		
	Propagated Equalities

	Original rule:
	l4 -> l1 : result_4^0'=result_4^post5, x_5^0'=x_5^post5, (0 == 0 /\ result_4^0-result_4^post5 == 0 /\ -x_5^post5+x_5^0 == 0), cost: 1
	New rule:
	l4 -> l1 : result_4^0'=result_4^0, x_5^0'=x_5^0, 0 == 0, cost: 1
	
		propagated equality result_4^post5 = result_4^0
		
		propagated equality x_5^post5 = x_5^0
		
	Simplified Guard

	Original rule:
	l4 -> l1 : result_4^0'=result_4^0, x_5^0'=x_5^0, 0 == 0, cost: 1
	New rule:
	l4 -> l1 : result_4^0'=result_4^0, x_5^0'=x_5^0, T, cost: 1
	
	Removed Trivial Updates

	Original rule:
	l4 -> l1 : result_4^0'=result_4^0, x_5^0'=x_5^0, T, cost: 1
	New rule:
	l4 -> l1 : T, cost: 1
	
	Propagated Equalities

	Original rule:
	l1 -> l1 : result_4^0'=result_4^post3, x_5^0'=x_5^post3, (-x_5^post2 <= 0 /\ -result_4^post3+result_4^post2 == 0 /\ result_4^0-result_4^post2 == 0 /\ x_5^post2-x_5^post3 == 0 /\ 1+x_5^post2-x_5^0 == 0), cost: 1
	New rule:
	l1 -> l1 : result_4^0'=result_4^post2, x_5^0'=x_5^post2, (0 == 0 /\ -x_5^post2 <= 0 /\ result_4^0-result_4^post2 == 0 /\ 1+x_5^post2-x_5^0 == 0), cost: 1
	
		propagated equality result_4^post3 = result_4^post2
		
		propagated equality x_5^post3 = x_5^post2
		
	Propagated Equalities

	Original rule:
	l1 -> l1 : result_4^0'=result_4^post2, x_5^0'=x_5^post2, (0 == 0 /\ -x_5^post2 <= 0 /\ result_4^0-result_4^post2 == 0 /\ 1+x_5^post2-x_5^0 == 0), cost: 1
	New rule:
	l1 -> l1 : result_4^0'=result_4^0, x_5^0'=-1+x_5^0, (0 == 0 /\ 1-x_5^0 <= 0), cost: 1
	
		propagated equality result_4^post2 = result_4^0
		
		propagated equality x_5^post2 = -1+x_5^0
		
	Simplified Guard

	Original rule:
	l1 -> l1 : result_4^0'=result_4^0, x_5^0'=-1+x_5^0, (0 == 0 /\ 1-x_5^0 <= 0), cost: 1
	New rule:
	l1 -> l1 : result_4^0'=result_4^0, x_5^0'=-1+x_5^0, 1-x_5^0 <= 0, cost: 1
	
	Removed Trivial Updates

	Original rule:
	l1 -> l1 : result_4^0'=result_4^0, x_5^0'=-1+x_5^0, 1-x_5^0 <= 0, cost: 1
	New rule:
	l1 -> l1 : x_5^0'=-1+x_5^0, 1-x_5^0 <= 0, cost: 1

Step with 8

	Trace

	8[T]
	
	Blocked

	[{}, {}]

Step with 7

	Trace

	8[T], 7[(x_5^0 <= 0)]
	
	Blocked

	[{}, {}, {}]

Backtrack

	Trace

	8[T]
	
	Blocked

	[{}, {7[T]}]

Step with 9

	Trace

	8[T], 9[(1-x_5^0 <= 0)]
	
	Blocked

	[{}, {7[T]}, {}]

Accelerate

Start location: l4
Program variables: result_4^0 x_5^0
   7: l1 -> l3 : result_4^0'=result_4^post4, x_5^0'=-1+x_5^0, x_5^0 <= 0, cost: 1
   9: l1 -> l1 : x_5^0'=-1+x_5^0, 1-x_5^0 <= 0, cost: 1
  10: l1 -> l1 : x_5^0'=x_5^0-n, (-1+n >= 0 /\ x_5^0-n >= 0), cost: 1
   8: l4 -> l1 : T, cost: 1

	Loop Acceleration

	Original rule:
	l1 -> l1 : x_5^0'=-1+x_5^0, (1-x_5^0 <= 0), cost: 1
	New rule:
	l1 -> l1 : x_5^0'=x_5^0-n, (-1+n >= 0 /\ x_5^0-n >= 0), cost: 1

		-1+x_5^0 >= 0 [0]: montonic decrease yields x_5^0-n >= 0
		
		-1+x_5^0 >= 0 [1]: eventual increase yields (1 <= 0 /\ -1+x_5^0 >= 0)
		
		Replacement map: {-1+x_5^0 >= 0 -> x_5^0-n >= 0}

	Trace

	8[T], 10[(-1+n >= 0 /\ x_5^0-n >= 0)]
	
	Blocked

	[{}, {7[T]}, {9[T], 10[T]}]

Step with 7

	Trace

	8[T], 10[(-1+n >= 0 /\ x_5^0-n >= 0)], 7[(x_5^0 <= 0)]
	
	Blocked

	[{}, {7[T]}, {9[T], 10[T]}, {}]

Backtrack

	Trace

	8[T], 10[(-1+n >= 0 /\ x_5^0-n >= 0)]
	
	Blocked

	[{}, {7[T]}, {7[T], 9[T], 10[T]}]

Backtrack

	Trace

	8[T]
	
	Blocked

	[{}, {7[T], 10[T]}]

Step with 9

	Trace

	8[T], 9[(1-x_5^0 <= 0)]
	
	Blocked

	[{}, {7[T], 10[T]}, {}]

Covered

	Trace

	8[T]
	
	Blocked

	[{}, {7[T], 9[T], 10[T]}]

Backtrack

	Trace

	Blocked

	[{8[T]}]

Accept

unknown

Build SHA: a05f16bf13df659c382799650051f91bf6828c7b