Start: l0
Program_Vars: X₀, X₁, X₂, X₃
Temp_Vars: E
Locations: l0, l1, l2, l3, l4, l5
Transitions:
t₆: l0(X₀, X₁, X₂, X₃) → l1(E, 0, X₂, 0)
t₀: l1(X₀, X₁, X₂, X₃) → l2(X₀, 0, E, X₃) :|: X₀ ≤ 0
t₅: l1(X₀, X₁, X₂, X₃) → l3(X₀, X₁, X₂, X₃) :|: 1 ≤ X₀
t₄: l2(X₀, X₁, X₂, X₃) → l1(E, X₁, X₂, 0) :|: X₂ ≤ 0
t₁: l2(X₀, X₁, X₂, X₃) → l2(X₀, X₁, X₂-1, X₃) :|: 1 ≤ X₂
t₂: l3(X₀, X₁, X₂, X₃) → l3(X₀, X₁, X₂, X₃)
t₃: l5(X₀, X₁, X₂, X₃) → l4(X₀, X₁, X₂, X₃)
Cut unreachable locations [l4; l5] from the program graph
Eliminate variables {X₁,X₃} that do not contribute to the problem
Found invariant X₀ ≤ 0 for location l2
Found invariant 1 ≤ X₀ for location l3
Start: l0
Program_Vars: X₀, X₂
Temp_Vars: E
Locations: l0, l1, l2, l3
Transitions:
t₁₅: l0(X₀, X₂) → l1(E, X₂)
t₁₆: l1(X₀, X₂) → l2(X₀, E) :|: X₀ ≤ 0
t₁₇: l1(X₀, X₂) → l3(X₀, X₂) :|: 1 ≤ X₀
t₁₉: l2(X₀, X₂) → l1(E, X₂) :|: X₂ ≤ 0 ∧ X₀ ≤ 0
t₁₈: l2(X₀, X₂) → l2(X₀, X₂-1) :|: 1 ≤ X₂ ∧ X₀ ≤ 0
t₂₀: l3(X₀, X₂) → l3(X₀, X₂) :|: 1 ≤ X₀
Found invariant X₂ ≤ 0 for location n_l1___2
Found invariant 0 ≤ X₂ ∧ X₀ ≤ X₂ ∧ X₀ ≤ 0 for location n_l2___1
Found invariant X₀ ≤ 0 for location n_l2___3
Found invariant 1 ≤ X₀ for location l3
Found invariant X₀ ≤ 0 for location l2
Found invariant 1 ≤ X₀ for location l3
Overall timebound:inf {Infinity}
t₁₅: 1 {O(1)}
t₁₆: inf {Infinity}
t₁₇: 1 {O(1)}
t₁₈: inf {Infinity}
t₁₉: inf {Infinity}
t₂₀: inf {Infinity}
Overall costbound: inf {Infinity}
t₁₅: 1 {O(1)}
t₁₆: inf {Infinity}
t₁₇: 1 {O(1)}
t₁₈: inf {Infinity}
t₁₉: inf {Infinity}
t₂₀: inf {Infinity}
t₁₅, X₂: X₂ {O(n)}