unknown

Initial ITS

Start location: [1]
Program variables: x y
   0: [1] -> [2] : x'=nondet, T, cost: 1
   1: [2] -> [3] : y'=nondet1, T, cost: 1
   2: [3] -> [4] : y+x > 0, cost: 1
   6: [3] -> [7] : y+x <= 0, cost: 1
   3: [4] -> [5] : x'=-1+x, T, cost: 1
   4: [5] -> [6] : y'=-2*y, T, cost: 1
   5: [6] -> [3] : T, cost: 1

Chained Linear Paths

Start location: [1]
Program variables: x y
   7: [1] -> [3] : x'=nondet, y'=nondet1, T, cost: 1
   6: [3] -> [7] : y+x <= 0, cost: 1
  10: [3] -> [3] : x'=-1+x, y'=-2*y, y+x > 0, cost: 1

	Eliminating location [2] by chaining:

	Applied chaining

	First rule:
	[1] -> [2] : x'=nondet, T, cost: 1
	Second rule:
	[2] -> [3] : y'=nondet1, T, cost: 1
	New rule:
	[1] -> [3] : x'=nondet, y'=nondet1, T, cost: 1
	
	Applied deletion

	Removed the following rules: 0 1
	
	Eliminating location [4] by chaining:

	Applied chaining

	First rule:
	[3] -> [4] : y+x > 0, cost: 1
	Second rule:
	[4] -> [5] : x'=-1+x, T, cost: 1
	New rule:
	[3] -> [5] : x'=-1+x, y+x > 0, cost: 1
	
	Applied deletion

	Removed the following rules: 2 3
	
	Eliminating location [5] by chaining:

	Applied chaining

	First rule:
	[3] -> [5] : x'=-1+x, y+x > 0, cost: 1
	Second rule:
	[5] -> [6] : y'=-2*y, T, cost: 1
	New rule:
	[3] -> [6] : x'=-1+x, y'=-2*y, y+x > 0, cost: 1
	
	Applied deletion

	Removed the following rules: 4 8
	
	Eliminating location [6] by chaining:

	Applied chaining

	First rule:
	[3] -> [6] : x'=-1+x, y'=-2*y, y+x > 0, cost: 1
	Second rule:
	[6] -> [3] : T, cost: 1
	New rule:
	[3] -> [3] : x'=-1+x, y'=-2*y, y+x > 0, cost: 1
	
	Applied deletion

	Removed the following rules: 5 9

Unrolled Loops

Start location: [1]
Program variables: x y
   7: [1] -> [3] : x'=nondet, y'=nondet1, T, cost: 1
   6: [3] -> [7] : y+x <= 0, cost: 1
  10: [3] -> [3] : x'=-1+x, y'=-2*y, y+x > 0, cost: 1
  11: [3] -> [3] : x'=-2+x, y'=4*y, (-1-2*y+x > 0 /\ y+x > 0), cost: 1

	Unrolling

	Original rule:
	[3] -> [3] : x'=-1+x, y'=-2*y, y+x > 0, cost: 1
	New rule:
	[3] -> [3] : x'=-2+x, y'=4*y, (-1-2*y+x > 0 /\ y+x > 0), cost: 1

Step with 7

	Trace

	7[T]
	
	Blocked

	[{}, {}]

Step with 6

	Trace

	7[T], 6[(y+x <= 0)]
	
	Blocked

	[{}, {}, {}]

Backtrack

	Trace

	7[T]
	
	Blocked

	[{}, {6[T]}]

Step with 10

	Trace

	7[T], 10[(y+x > 0)]
	
	Blocked

	[{}, {6[T]}, {}]

Acceleration Failed

marked recursive suffix as redundant

Step with 10

	Trace

	7[T], 10[(y+x > 0)], 10[(y+x > 0)]
	
	Blocked

	[{}, {6[T]}, {}, {}]

Covered

	Trace

	7[T], 10[(y+x > 0)]
	
	Blocked

	[{}, {6[T]}, {10[T]}]

Step with 11

	Trace

	7[T], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)]
	
	Blocked

	[{}, {6[T]}, {10[T]}, {}]

Acceleration Failed

marked recursive suffix as redundant

Acceleration Failed

marked recursive suffix as redundant

Step with 11

	Trace

	7[T], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)]
	
	Blocked

	[{}, {6[T]}, {10[T]}, {}, {}]

Covered

	Trace

	7[T], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)]
	
	Blocked

	[{}, {6[T]}, {10[T]}, {11[T]}]

Step with 6

	Trace

	7[T], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)], 6[(y+x <= 0)]
	
	Blocked

	[{}, {6[T]}, {10[T]}, {11[T]}, {}]

Backtrack

	Trace

	7[T], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)]
	
	Blocked

	[{}, {6[T]}, {10[T]}, {6[T], 11[T]}]

Step with 10

	Trace

	7[T], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)]
	
	Blocked

	[{}, {6[T]}, {10[T]}, {6[T], 11[T]}, {}]

Acceleration Failed

marked recursive suffix as redundant

Acceleration Failed

marked recursive suffix as redundant

Step with 10

	Trace

	7[T], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)], 10[(y+x > 0)]
	
	Blocked

	[{}, {6[T]}, {10[T]}, {6[T], 11[T]}, {}, {}]

Covered

	Trace

	7[T], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)]
	
	Blocked

	[{}, {6[T]}, {10[T]}, {6[T], 11[T]}, {10[T]}]

Step with 11

	Trace

	7[T], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)]
	
	Blocked

	[{}, {6[T]}, {10[T]}, {6[T], 11[T]}, {10[T]}, {}]

Acceleration Failed

marked recursive suffix as redundant

Covered

	Trace

	7[T], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)]
	
	Blocked

	[{}, {6[T]}, {10[T]}, {6[T], 11[T]}, {10[T], 11[T]}]

Step with 6

	Trace

	7[T], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)], 6[(y+x <= 0)]
	
	Blocked

	[{}, {6[T]}, {10[T]}, {6[T], 11[T]}, {10[T], 11[T]}, {}]

Backtrack

	Trace

	7[T], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)]
	
	Blocked

	[{}, {6[T]}, {10[T]}, {6[T], 11[T]}, {6[T], 10[T], 11[T]}]

Backtrack

	Trace

	7[T], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)]
	
	Blocked

	[{}, {6[T]}, {10[T]}, {6[T], 10[T], 11[T]}]

Backtrack

	Trace

	7[T], 10[(y+x > 0)]
	
	Blocked

	[{}, {6[T]}, {10[T], 11[T]}]

Step with 6

	Trace

	7[T], 10[(y+x > 0)], 6[(y+x <= 0)]
	
	Blocked

	[{}, {6[T]}, {10[T], 11[T]}, {}]

Backtrack

	Trace

	7[T], 10[(y+x > 0)]
	
	Blocked

	[{}, {6[T]}, {6[T], 10[T], 11[T]}]

Backtrack

	Trace

	7[T]
	
	Blocked

	[{}, {6[T], 10[T]}]

Step with 11

	Trace

	7[T], 11[(-1-2*y+x > 0 /\ y+x > 0)]
	
	Blocked

	[{}, {6[T], 10[T]}, {}]

Step with 11

	Trace

	7[T], 11[(-1-2*y+x > 0 /\ y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)]
	
	Blocked

	[{}, {6[T], 10[T]}, {}, {}]

Covered

	Trace

	7[T], 11[(-1-2*y+x > 0 /\ y+x > 0)]
	
	Blocked

	[{}, {6[T], 10[T]}, {11[T]}]

Step with 6

	Trace

	7[T], 11[(-1-2*y+x > 0 /\ y+x > 0)], 6[(y+x <= 0)]
	
	Blocked

	[{}, {6[T], 10[T]}, {11[T]}, {}]

Backtrack

	Trace

	7[T], 11[(-1-2*y+x > 0 /\ y+x > 0)]
	
	Blocked

	[{}, {6[T], 10[T]}, {6[T], 11[T]}]

Step with 10

	Trace

	7[T], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)]
	
	Blocked

	[{}, {6[T], 10[T]}, {6[T], 11[T]}, {}]

Step with 10

	Trace

	7[T], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)], 10[(y+x > 0)]
	
	Blocked

	[{}, {6[T], 10[T]}, {6[T], 11[T]}, {}, {}]

Covered

	Trace

	7[T], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)]
	
	Blocked

	[{}, {6[T], 10[T]}, {6[T], 11[T]}, {10[T]}]

Step with 11

	Trace

	7[T], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)]
	
	Blocked

	[{}, {6[T], 10[T]}, {6[T], 11[T]}, {10[T]}, {}]

Step with 11

	Trace

	7[T], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)]
	
	Blocked

	[{}, {6[T], 10[T]}, {6[T], 11[T]}, {10[T]}, {}, {}]

Covered

	Trace

	7[T], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)]
	
	Blocked

	[{}, {6[T], 10[T]}, {6[T], 11[T]}, {10[T]}, {11[T]}]

Step with 6

	Trace

	7[T], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)], 6[(y+x <= 0)]
	
	Blocked

	[{}, {6[T], 10[T]}, {6[T], 11[T]}, {10[T]}, {11[T]}, {}]

Backtrack

	Trace

	7[T], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)]
	
	Blocked

	[{}, {6[T], 10[T]}, {6[T], 11[T]}, {10[T]}, {6[T], 11[T]}]

Step with 10

	Trace

	7[T], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)]
	
	Blocked

	[{}, {6[T], 10[T]}, {6[T], 11[T]}, {10[T]}, {6[T], 11[T]}, {}]

Covered

	Trace

	7[T], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)], 11[(-1-2*y+x > 0 /\ y+x > 0)]
	
	Blocked

	[{}, {6[T], 10[T]}, {6[T], 11[T]}, {10[T]}, {6[T], 10[T], 11[T]}]

Backtrack

	Trace

	7[T], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)]
	
	Blocked

	[{}, {6[T], 10[T]}, {6[T], 11[T]}, {10[T], 11[T]}]

Step with 6

	Trace

	7[T], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)], 6[(y+x <= 0)]
	
	Blocked

	[{}, {6[T], 10[T]}, {6[T], 11[T]}, {10[T], 11[T]}, {}]

Backtrack

	Trace

	7[T], 11[(-1-2*y+x > 0 /\ y+x > 0)], 10[(y+x > 0)]
	
	Blocked

	[{}, {6[T], 10[T]}, {6[T], 11[T]}, {6[T], 10[T], 11[T]}]

Backtrack

	Trace

	7[T], 11[(-1-2*y+x > 0 /\ y+x > 0)]
	
	Blocked

	[{}, {6[T], 10[T]}, {6[T], 10[T], 11[T]}]

Backtrack

	Trace

	7[T]
	
	Blocked

	[{}, {6[T], 10[T], 11[T]}]

Backtrack

	Trace

	Blocked

	[{7[T]}]

Accept

unknown

Build SHA: a05f16bf13df659c382799650051f91bf6828c7b