Initial Problem

Start: l0
Program_Vars: X₀, X₁, X₂, X₃, X₄
Temp_Vars: nondef.0, nondef.1
Locations: l0, l1, l10, l11, l12, l13, l2, l3, l4, l5, l6, l7, l8, l9
Transitions:
t₀: l0(X₀, X₁, X₂, X₃, X₄) → l11(X₀, X₁, X₂, X₃, X₄)
t₇: l1(X₀, X₁, X₂, X₃, X₄) → l4(X₀, X₁, X₂, X₂-1, X₄)
t₃: l10(X₀, X₁, X₂, X₃, X₄) → l12(X₀, X₁, X₂, X₃, X₄) :|: X₄ ≤ X₂
t₂: l10(X₀, X₁, X₂, X₃, X₄) → l2(X₀, X₁, X₂, X₃, X₄) :|: X₂ < X₄
t₁: l11(X₀, X₁, X₂, X₃, X₄) → l10(X₀, X₁, 1, X₃, X₄)
t₁₇: l12(X₀, X₁, X₂, X₃, X₄) → l13(X₀, X₁, X₂, X₃, X₄)
t₄: l2(X₀, X₁, X₂, X₃, X₄) → l3(X₀, X₁, X₂, X₃, X₄)
t₆: l3(X₀, X₁, X₂, X₃, X₄) → l1(nondef.0, X₁, X₂, X₃, X₄)
t₈: l4(X₀, X₁, X₂, X₃, X₄) → l6(X₀, X₁, X₂, X₃, X₄) :|: 0 ≤ X₃
t₉: l4(X₀, X₁, X₂, X₃, X₄) → l9(X₀, X₁, X₂, X₃, X₄) :|: X₃ < 0
t₁₃: l5(X₀, X₁, X₂, X₃, X₄) → l8(X₀, X₁, X₂, X₃, X₄) :|: X₀ < X₁
t₁₄: l5(X₀, X₁, X₂, X₃, X₄) → l9(X₀, X₁, X₂, X₃, X₄) :|: X₁ ≤ X₀
t₁₀: l6(X₀, X₁, X₂, X₃, X₄) → l7(X₀, X₁, X₂, X₃, X₄)
t₁₂: l7(X₀, X₁, X₂, X₃, X₄) → l5(X₀, nondef.1, X₂, X₃, X₄)
t₁₅: l8(X₀, X₁, X₂, X₃, X₄) → l4(X₀, X₁, X₂, X₃-1, X₄)
t₁₆: l9(X₀, X₁, X₂, X₃, X₄) → l10(X₀, X₁, X₂+1, X₃, X₄)

Preprocessing

Found invariant 2 ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1 ≤ X₂ for location l2

Found invariant 2 ≤ X₄ ∧ 2 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ X₂ ∧ 0 ≤ X₃ ∧ 1 ≤ X₂+X₃ ∧ 1 ≤ X₂ for location l6

Found invariant X₄ ≤ X₂ ∧ 1 ≤ X₂ for location l12

Found invariant 2 ≤ X₄ ∧ 2 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ X₂ ∧ 0 ≤ X₃ ∧ 1 ≤ X₂+X₃ ∧ 1 ≤ X₂ for location l7

Found invariant 2 ≤ X₄ ∧ 2 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ X₂ ∧ 0 ≤ X₃ ∧ 1 ≤ X₂+X₃ ∧ 1 ≤ X₂ for location l5

Found invariant X₄ ≤ X₂ ∧ 1 ≤ X₂ for location l13

Found invariant 2 ≤ X₄ ∧ 2 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ X₂ ∧ 0 ≤ X₃ ∧ 1 ≤ X₂+X₃ ∧ 1 ≤ X₂ ∧ 1+X₀ ≤ X₁ for location l8

Found invariant 2 ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1 ≤ X₂ for location l1

Found invariant 1 ≤ X₂ for location l10

Found invariant 2 ≤ X₄ ∧ 1 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ X₂ ∧ 0 ≤ 1+X₃ ∧ 0 ≤ X₂+X₃ ∧ 1 ≤ X₂ for location l4

Found invariant 2 ≤ X₄ ∧ 1 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ X₂ ∧ 0 ≤ 1+X₃ ∧ 0 ≤ X₂+X₃ ∧ 1 ≤ X₂ for location l9

Found invariant 2 ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1 ≤ X₂ for location l3

Problem after Preprocessing

Start: l0
Program_Vars: X₀, X₁, X₂, X₃, X₄
Temp_Vars: nondef.0, nondef.1
Locations: l0, l1, l10, l11, l12, l13, l2, l3, l4, l5, l6, l7, l8, l9
Transitions:
t₀: l0(X₀, X₁, X₂, X₃, X₄) → l11(X₀, X₁, X₂, X₃, X₄)
t₇: l1(X₀, X₁, X₂, X₃, X₄) → l4(X₀, X₁, X₂, X₂-1, X₄) :|: 2 ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1 ≤ X₂
t₃: l10(X₀, X₁, X₂, X₃, X₄) → l12(X₀, X₁, X₂, X₃, X₄) :|: X₄ ≤ X₂ ∧ 1 ≤ X₂
t₂: l10(X₀, X₁, X₂, X₃, X₄) → l2(X₀, X₁, X₂, X₃, X₄) :|: X₂ < X₄ ∧ 1 ≤ X₂
t₁: l11(X₀, X₁, X₂, X₃, X₄) → l10(X₀, X₁, 1, X₃, X₄)
t₁₇: l12(X₀, X₁, X₂, X₃, X₄) → l13(X₀, X₁, X₂, X₃, X₄) :|: X₄ ≤ X₂ ∧ 1 ≤ X₂
t₄: l2(X₀, X₁, X₂, X₃, X₄) → l3(X₀, X₁, X₂, X₃, X₄) :|: 2 ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1 ≤ X₂
t₆: l3(X₀, X₁, X₂, X₃, X₄) → l1(nondef.0, X₁, X₂, X₃, X₄) :|: 2 ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1 ≤ X₂
t₈: l4(X₀, X₁, X₂, X₃, X₄) → l6(X₀, X₁, X₂, X₃, X₄) :|: 0 ≤ X₃ ∧ 2 ≤ X₄ ∧ 1 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ X₂ ∧ 0 ≤ 1+X₃ ∧ 0 ≤ X₂+X₃ ∧ 1 ≤ X₂
t₉: l4(X₀, X₁, X₂, X₃, X₄) → l9(X₀, X₁, X₂, X₃, X₄) :|: X₃ < 0 ∧ 2 ≤ X₄ ∧ 1 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ X₂ ∧ 0 ≤ 1+X₃ ∧ 0 ≤ X₂+X₃ ∧ 1 ≤ X₂
t₁₃: l5(X₀, X₁, X₂, X₃, X₄) → l8(X₀, X₁, X₂, X₃, X₄) :|: X₀ < X₁ ∧ 2 ≤ X₄ ∧ 2 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ X₂ ∧ 0 ≤ X₃ ∧ 1 ≤ X₂+X₃ ∧ 1 ≤ X₂
t₁₄: l5(X₀, X₁, X₂, X₃, X₄) → l9(X₀, X₁, X₂, X₃, X₄) :|: X₁ ≤ X₀ ∧ 2 ≤ X₄ ∧ 2 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ X₂ ∧ 0 ≤ X₃ ∧ 1 ≤ X₂+X₃ ∧ 1 ≤ X₂
t₁₀: l6(X₀, X₁, X₂, X₃, X₄) → l7(X₀, X₁, X₂, X₃, X₄) :|: 2 ≤ X₄ ∧ 2 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ X₂ ∧ 0 ≤ X₃ ∧ 1 ≤ X₂+X₃ ∧ 1 ≤ X₂
t₁₂: l7(X₀, X₁, X₂, X₃, X₄) → l5(X₀, nondef.1, X₂, X₃, X₄) :|: 2 ≤ X₄ ∧ 2 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ X₂ ∧ 0 ≤ X₃ ∧ 1 ≤ X₂+X₃ ∧ 1 ≤ X₂
t₁₅: l8(X₀, X₁, X₂, X₃, X₄) → l4(X₀, X₁, X₂, X₃-1, X₄) :|: 2 ≤ X₄ ∧ 2 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ X₂ ∧ 0 ≤ X₃ ∧ 1 ≤ X₂+X₃ ∧ 1 ≤ X₂ ∧ 1+X₀ ≤ X₁
t₁₆: l9(X₀, X₁, X₂, X₃, X₄) → l10(X₀, X₁, X₂+1, X₃, X₄) :|: 2 ≤ X₄ ∧ 1 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ X₂ ∧ 0 ≤ 1+X₃ ∧ 0 ≤ X₂+X₃ ∧ 1 ≤ X₂

Analysing control-flow refined program

Found invariant 2 ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ X₂ ≤ 1 ∧ 1 ≤ X₂ for location n_l2___20

Found invariant 2 ≤ X₄ ∧ 2 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ X₂ ∧ 0 ≤ X₃ ∧ 1 ≤ X₂+X₃ ∧ X₂ ≤ 1+X₃ ∧ 1 ≤ X₂ for location n_l4___17

Found invariant 2 ≤ X₄ ∧ 2 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ X₂ ∧ 0 ≤ X₃ ∧ 1 ≤ X₂+X₃ ∧ X₂ ≤ 1+X₃ ∧ 1 ≤ X₂ for location n_l7___15

Found invariant 2 ≤ X₄ ∧ 2 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ X₂ ∧ 0 ≤ X₃ ∧ 1 ≤ X₂+X₃ ∧ X₂ ≤ 1+X₃ ∧ 1 ≤ X₂ ∧ 1+X₀ ≤ X₁ for location n_l8___13

Found invariant 2 ≤ X₄ ∧ 1 ≤ X₃+X₄ ∧ 3+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ 0 ∧ 2+X₃ ≤ X₂ ∧ 0 ≤ 1+X₃ ∧ 0 ≤ X₂+X₃ ∧ 1 ≤ X₂ ∧ 1+X₀ ≤ X₁ for location n_l9___9

Found invariant 2 ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ X₂ ≤ 1 ∧ 1 ≤ X₂ for location n_l1___18

Found invariant 2 ≤ X₄ ∧ 1 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 4 ≤ X₂+X₄ ∧ X₂ ≤ X₄ ∧ 2+X₃ ≤ X₂ ∧ 0 ≤ 1+X₃ ∧ 1 ≤ X₂+X₃ ∧ 2 ≤ X₂ for location n_l10___4

Found invariant 2 ≤ X₄ ∧ 2 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ X₂ ∧ 0 ≤ X₃ ∧ 1 ≤ X₂+X₃ ∧ X₂ ≤ 1+X₃ ∧ 1 ≤ X₂ for location n_l6___16

Found invariant 2 ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ X₂ ≤ 1 ∧ 1 ≤ X₂ for location n_l3___19

Found invariant 3 ≤ X₄ ∧ 3 ≤ X₃+X₄ ∧ 3+X₃ ≤ X₄ ∧ 5 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 2+X₃ ≤ X₂ ∧ 0 ≤ X₃ ∧ 2 ≤ X₂+X₃ ∧ 2 ≤ X₂ ∧ 1+X₀ ≤ X₁ for location n_l6___10

Found invariant 3 ≤ X₄ ∧ 3 ≤ X₃+X₄ ∧ 3+X₃ ≤ X₄ ∧ 5 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 2+X₃ ≤ X₂ ∧ 0 ≤ X₃ ∧ 2 ≤ X₂+X₃ ∧ 2 ≤ X₂ ∧ 1+X₀ ≤ X₁ for location n_l8___6

Found invariant 2 ≤ X₄ ∧ 2 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ X₂ ∧ 0 ≤ X₃ ∧ 1 ≤ X₂+X₃ ∧ X₂ ≤ 1+X₃ ∧ 1 ≤ X₂ for location n_l5___14

Found invariant X₄ ≤ X₂ ∧ 1 ≤ X₂ for location l12

Found invariant 3 ≤ X₄ ∧ 2 ≤ X₃+X₄ ∧ 3+X₃ ≤ X₄ ∧ 5 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 2+X₃ ≤ X₂ ∧ 0 ≤ 1+X₃ ∧ 1 ≤ X₂+X₃ ∧ 2 ≤ X₂ for location n_l2___3

Found invariant 3 ≤ X₄ ∧ 3 ≤ X₃+X₄ ∧ 3+X₃ ≤ X₄ ∧ 5 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 2+X₃ ≤ X₂ ∧ 0 ≤ X₃ ∧ 2 ≤ X₂+X₃ ∧ 2 ≤ X₂ ∧ 1+X₀ ≤ X₁ for location n_l7___8

Found invariant X₄ ≤ X₂ ∧ 1 ≤ X₂ for location l13

Found invariant 3 ≤ X₄ ∧ 2 ≤ X₃+X₄ ∧ 3+X₃ ≤ X₄ ∧ 5 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 2+X₃ ≤ X₂ ∧ 0 ≤ 1+X₃ ∧ 1 ≤ X₂+X₃ ∧ 2 ≤ X₂ for location n_l3___2

Found invariant 3 ≤ X₄ ∧ 3 ≤ X₃+X₄ ∧ 3+X₃ ≤ X₄ ∧ 5 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 2+X₃ ≤ X₂ ∧ 0 ≤ X₃ ∧ 2 ≤ X₂+X₃ ∧ 2 ≤ X₂ for location n_l5___7

Found invariant X₂ ≤ 1 ∧ 1 ≤ X₂ for location l10

Found invariant 2 ≤ X₄ ∧ 2 ≤ X₃+X₄ ∧ 2+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 1+X₃ ≤ X₂ ∧ 0 ≤ X₃ ∧ 1 ≤ X₂+X₃ ∧ X₂ ≤ 1+X₃ ∧ 1 ≤ X₂ ∧ X₁ ≤ X₀ for location n_l9___12

Found invariant 3 ≤ X₄ ∧ 2 ≤ X₃+X₄ ∧ 3+X₃ ≤ X₄ ∧ 5 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 2+X₃ ≤ X₂ ∧ 0 ≤ 1+X₃ ∧ 1 ≤ X₂+X₃ ∧ 2 ≤ X₂ for location n_l1___1

Found invariant 3 ≤ X₄ ∧ 3 ≤ X₃+X₄ ∧ 3+X₃ ≤ X₄ ∧ 5 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 2+X₃ ≤ X₂ ∧ 0 ≤ X₃ ∧ 2 ≤ X₂+X₃ ∧ 2 ≤ X₂ ∧ X₁ ≤ X₀ for location n_l9___5

Found invariant 2 ≤ X₄ ∧ 1 ≤ X₃+X₄ ∧ 3+X₃ ≤ X₄ ∧ 3 ≤ X₂+X₄ ∧ 1+X₂ ≤ X₄ ∧ 2+X₃ ≤ X₂ ∧ 0 ≤ 1+X₃ ∧ 0 ≤ X₂+X₃ ∧ 1 ≤ X₂ ∧ 1+X₀ ≤ X₁ for location n_l4___11

CFR did not improve the program. Rolling back

All Bounds

Timebounds

Overall timebound:inf {Infinity}
t₀: 1 {O(1)}
t₇: inf {Infinity}
t₂: inf {Infinity}
t₃: 1 {O(1)}
t₁: 1 {O(1)}
t₁₇: 1 {O(1)}
t₄: inf {Infinity}
t₆: inf {Infinity}
t₈: inf {Infinity}
t₉: inf {Infinity}
t₁₃: inf {Infinity}
t₁₄: inf {Infinity}
t₁₀: inf {Infinity}
t₁₂: inf {Infinity}
t₁₅: inf {Infinity}
t₁₆: inf {Infinity}

Costbounds

Overall costbound: inf {Infinity}
t₀: 1 {O(1)}
t₇: inf {Infinity}
t₂: inf {Infinity}
t₃: 1 {O(1)}
t₁: 1 {O(1)}
t₁₇: 1 {O(1)}
t₄: inf {Infinity}
t₆: inf {Infinity}
t₈: inf {Infinity}
t₉: inf {Infinity}
t₁₃: inf {Infinity}
t₁₄: inf {Infinity}
t₁₀: inf {Infinity}
t₁₂: inf {Infinity}
t₁₅: inf {Infinity}
t₁₆: inf {Infinity}

Sizebounds

t₀, X₀: X₀ {O(n)}
t₀, X₁: X₁ {O(n)}
t₀, X₂: X₂ {O(n)}
t₀, X₃: X₃ {O(n)}
t₀, X₄: X₄ {O(n)}
t₇, X₄: X₄ {O(n)}
t₂, X₄: X₄ {O(n)}
t₃, X₄: 2⋅X₄ {O(n)}
t₁, X₀: X₀ {O(n)}
t₁, X₁: X₁ {O(n)}
t₁, X₂: 1 {O(1)}
t₁, X₃: X₃ {O(n)}
t₁, X₄: X₄ {O(n)}
t₁₇, X₄: 2⋅X₄ {O(n)}
t₄, X₄: X₄ {O(n)}
t₆, X₄: X₄ {O(n)}
t₈, X₄: X₄ {O(n)}
t₉, X₃: 1 {O(1)}
t₉, X₄: X₄ {O(n)}
t₁₃, X₄: X₄ {O(n)}
t₁₄, X₄: X₄ {O(n)}
t₁₀, X₄: X₄ {O(n)}
t₁₂, X₄: X₄ {O(n)}
t₁₅, X₄: X₄ {O(n)}
t₁₆, X₄: X₄ {O(n)}