unknown Initial ITS Start location: __init Program variables: arg1 arg2 0: f1_0_main_Load -> f161_0_main_LT : arg1'=arg1p1, arg2'=arg2p1, (arg1 > 0 /\ 1+arg2 > 0 /\ 1+arg1p1 > 0), cost: 1 1: f161_0_main_LT -> f212_0_main_LE : arg1'=arg1p2, arg2'=arg2p2, (1-arg2p2 == 0 /\ 1+arg1 > 0 /\ arg1-arg1p2 == 0), cost: 1 2: f212_0_main_LE -> f161_0_main_LT : arg1'=arg1p3, arg2'=arg2p3, (-arg1+arg2 >= 0 /\ -1+arg1-arg1p3 == 0), cost: 1 3: f212_0_main_LE -> f212_0_main_LE : arg1'=arg1p4, arg2'=arg2p4, (-arg1+arg2 < 0 /\ -arg2p4+2*arg2 == 0 /\ arg2 > 0 /\ -arg1p4+arg1 == 0), cost: 1 4: __init -> f1_0_main_Load : arg1'=arg1p5, arg2'=arg2p5, T, cost: 1 Chained Linear Paths Start location: __init Program variables: arg1 arg2 1: f161_0_main_LT -> f212_0_main_LE : arg1'=arg1p2, arg2'=arg2p2, (1-arg2p2 == 0 /\ 1+arg1 > 0 /\ arg1-arg1p2 == 0), cost: 1 2: f212_0_main_LE -> f161_0_main_LT : arg1'=arg1p3, arg2'=arg2p3, (-arg1+arg2 >= 0 /\ -1+arg1-arg1p3 == 0), cost: 1 3: f212_0_main_LE -> f212_0_main_LE : arg1'=arg1p4, arg2'=arg2p4, (-arg1+arg2 < 0 /\ -arg2p4+2*arg2 == 0 /\ arg2 > 0 /\ -arg1p4+arg1 == 0), cost: 1 5: __init -> f161_0_main_LT : arg1'=arg1p1, arg2'=arg2p1, (1+arg1p1 > 0 /\ arg1p5 > 0 /\ 1+arg2p5 > 0), cost: 1 Eliminating location f1_0_main_Load by chaining: Applied chaining First rule: __init -> f1_0_main_Load : arg1'=arg1p5, arg2'=arg2p5, T, cost: 1 Second rule: f1_0_main_Load -> f161_0_main_LT : arg1'=arg1p1, arg2'=arg2p1, (arg1 > 0 /\ 1+arg2 > 0 /\ 1+arg1p1 > 0), cost: 1 New rule: __init -> f161_0_main_LT : arg1'=arg1p1, arg2'=arg2p1, (1+arg1p1 > 0 /\ arg1p5 > 0 /\ 1+arg2p5 > 0), cost: 1 Applied deletion Removed the following rules: 0 4 Simplified Transitions Start location: __init Program variables: arg1 arg2 6: f161_0_main_LT -> f212_0_main_LE : arg2'=1, 1+arg1 > 0, cost: 1 7: f212_0_main_LE -> f161_0_main_LT : arg1'=-1+arg1, arg2'=arg2p3, -arg1+arg2 >= 0, cost: 1 8: f212_0_main_LE -> f212_0_main_LE : arg2'=2*arg2, (-arg1+arg2 < 0 /\ arg2 > 0), cost: 1 9: __init -> f161_0_main_LT : arg1'=arg1p1, arg2'=arg2p1, (1+arg1p1 > 0), cost: 1 Propagated Equalities Original rule: f161_0_main_LT -> f212_0_main_LE : arg1'=arg1p2, arg2'=arg2p2, (1-arg2p2 == 0 /\ 1+arg1 > 0 /\ arg1-arg1p2 == 0), cost: 1 New rule: f161_0_main_LT -> f212_0_main_LE : arg1'=arg1, arg2'=1, (0 == 0 /\ 1+arg1 > 0), cost: 1 propagated equality arg2p2 = 1 propagated equality arg1p2 = arg1 Simplified Guard Original rule: f161_0_main_LT -> f212_0_main_LE : arg1'=arg1, arg2'=1, (0 == 0 /\ 1+arg1 > 0), cost: 1 New rule: f161_0_main_LT -> f212_0_main_LE : arg1'=arg1, arg2'=1, 1+arg1 > 0, cost: 1 Removed Trivial Updates Original rule: f161_0_main_LT -> f212_0_main_LE : arg1'=arg1, arg2'=1, 1+arg1 > 0, cost: 1 New rule: f161_0_main_LT -> f212_0_main_LE : arg2'=1, 1+arg1 > 0, cost: 1 Propagated Equalities Original rule: f212_0_main_LE -> f161_0_main_LT : arg1'=arg1p3, arg2'=arg2p3, (-arg1+arg2 >= 0 /\ -1+arg1-arg1p3 == 0), cost: 1 New rule: f212_0_main_LE -> f161_0_main_LT : arg1'=-1+arg1, arg2'=arg2p3, (0 == 0 /\ -arg1+arg2 >= 0), cost: 1 propagated equality arg1p3 = -1+arg1 Simplified Guard Original rule: f212_0_main_LE -> f161_0_main_LT : arg1'=-1+arg1, arg2'=arg2p3, (0 == 0 /\ -arg1+arg2 >= 0), cost: 1 New rule: f212_0_main_LE -> f161_0_main_LT : arg1'=-1+arg1, arg2'=arg2p3, -arg1+arg2 >= 0, cost: 1 Propagated Equalities Original rule: f212_0_main_LE -> f212_0_main_LE : arg1'=arg1p4, arg2'=arg2p4, (-arg1+arg2 < 0 /\ -arg2p4+2*arg2 == 0 /\ arg2 > 0 /\ -arg1p4+arg1 == 0), cost: 1 New rule: f212_0_main_LE -> f212_0_main_LE : arg1'=arg1, arg2'=2*arg2, (0 == 0 /\ -arg1+arg2 < 0 /\ arg2 > 0), cost: 1 propagated equality arg2p4 = 2*arg2 propagated equality arg1p4 = arg1 Simplified Guard Original rule: f212_0_main_LE -> f212_0_main_LE : arg1'=arg1, arg2'=2*arg2, (0 == 0 /\ -arg1+arg2 < 0 /\ arg2 > 0), cost: 1 New rule: f212_0_main_LE -> f212_0_main_LE : arg1'=arg1, arg2'=2*arg2, (-arg1+arg2 < 0 /\ arg2 > 0), cost: 1 Removed Trivial Updates Original rule: f212_0_main_LE -> f212_0_main_LE : arg1'=arg1, arg2'=2*arg2, (-arg1+arg2 < 0 /\ arg2 > 0), cost: 1 New rule: f212_0_main_LE -> f212_0_main_LE : arg2'=2*arg2, (-arg1+arg2 < 0 /\ arg2 > 0), cost: 1 Eliminated Temporary Variables via Transitive Closure Original rule: __init -> f161_0_main_LT : arg1'=arg1p1, arg2'=arg2p1, (1+arg1p1 > 0 /\ arg1p5 > 0 /\ 1+arg2p5 > 0), cost: 1 New rule: __init -> f161_0_main_LT : arg1'=arg1p1, arg2'=arg2p1, (1+arg1p1 > 0), cost: 1 Step with 9 Trace 9[(1+arg1p1 > 0)] Blocked [{}, {}] Step with 6 Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)] Blocked [{}, {}, {}] Step with 7 Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 7[(-arg1+arg2 >= 0)] Blocked [{}, {}, {}, {}] Accelerate Start location: __init Program variables: arg1 arg2 6: f161_0_main_LT -> f212_0_main_LE : arg2'=1, 1+arg1 > 0, cost: 1 10: f161_0_main_LT -> f161_0_main_LT : arg1'=-n+arg1, arg2'=arg2p3, (-1+n >= 0 /\ 2-n+arg1 > 0 /\ 1-arg1 >= 0), cost: 1 7: f212_0_main_LE -> f161_0_main_LT : arg1'=-1+arg1, arg2'=arg2p3, -arg1+arg2 >= 0, cost: 1 8: f212_0_main_LE -> f212_0_main_LE : arg2'=2*arg2, (-arg1+arg2 < 0 /\ arg2 > 0), cost: 1 9: __init -> f161_0_main_LT : arg1'=arg1p1, arg2'=arg2p1, (1+arg1p1 > 0), cost: 1 Loop Acceleration Original rule: f161_0_main_LT -> f161_0_main_LT : arg1'=-1+arg1, arg2'=arg2p3, (1+arg1 > 0 /\ 1-arg1 >= 0), cost: 1 New rule: f161_0_main_LT -> f161_0_main_LT : arg1'=-n+arg1, arg2'=arg2p3, (-1+n >= 0 /\ 2-n+arg1 > 0 /\ 1-arg1 >= 0), cost: 1 1+arg1 > 0 [0]: montonic decrease yields 2-n+arg1 > 0 1+arg1 > 0 [1]: eventual increase yields (1 <= 0 /\ 1+arg1 > 0) 1-arg1 >= 0 [0]: monotonic increase yields 1-arg1 >= 0 Replacement map: {1+arg1 > 0 -> 2-n+arg1 > 0, 1-arg1 >= 0 -> 1-arg1 >= 0} Trace 9[(1+arg1p1 > 0)], 10[(-1+n >= 0 /\ 2-n+arg1 > 0 /\ 1-arg1 >= 0)] Blocked [{}, {}, {10[T]}] Step with 6 Trace 9[(1+arg1p1 > 0)], 10[(-1+n >= 0 /\ 2-n+arg1 > 0 /\ 1-arg1 >= 0)], 6[(1+arg1 > 0)] Blocked [{}, {}, {10[T]}, {}] Step with 7 Trace 9[(1+arg1p1 > 0)], 10[(-1+n >= 0 /\ 2-n+arg1 > 0 /\ 1-arg1 >= 0)], 6[(1+arg1 > 0)], 7[(-arg1+arg2 >= 0)] Blocked [{}, {}, {10[T]}, {}, {}] Covered Trace 9[(1+arg1p1 > 0)], 10[(-1+n >= 0 /\ 2-n+arg1 > 0 /\ 1-arg1 >= 0)], 6[(1+arg1 > 0)] Blocked [{}, {}, {10[T]}, {7[T]}] Backtrack Trace 9[(1+arg1p1 > 0)], 10[(-1+n >= 0 /\ 2-n+arg1 > 0 /\ 1-arg1 >= 0)] Blocked [{}, {}, {6[T], 10[T]}] Backtrack Trace 9[(1+arg1p1 > 0)] Blocked [{}, {10[T]}] Step with 6 Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)] Blocked [{}, {10[T]}, {}] Step with 7 Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 7[(-arg1+arg2 >= 0)] Blocked [{}, {10[T]}, {}, {}] Covered Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)] Blocked [{}, {10[T]}, {7[T]}] Step with 8 Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 8[(-arg1+arg2 < 0 /\ arg2 > 0)] Blocked [{}, {10[T]}, {7[T]}, {}] Acceleration Failed marked recursive suffix as redundant Step with 8 Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 8[(-arg1+arg2 < 0 /\ arg2 > 0)], 8[(-arg1+arg2 < 0 /\ arg2 > 0)] Blocked [{}, {10[T]}, {7[T]}, {}, {}] Covered Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 8[(-arg1+arg2 < 0 /\ arg2 > 0)] Blocked [{}, {10[T]}, {7[T]}, {8[T]}] Step with 7 Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 8[(-arg1+arg2 < 0 /\ arg2 > 0)], 7[(-arg1+arg2 >= 0)] Blocked [{}, {10[T]}, {7[T]}, {8[T]}, {}] Acceleration Failed marked recursive suffix as redundant Step with 6 Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 8[(-arg1+arg2 < 0 /\ arg2 > 0)], 7[(-arg1+arg2 >= 0)], 6[(1+arg1 > 0)] Blocked [{}, {10[T]}, {7[T]}, {8[T]}, {}, {}] Accelerate Start location: __init Program variables: arg1 arg2 6: f161_0_main_LT -> f212_0_main_LE : arg2'=1, 1+arg1 > 0, cost: 1 10: f161_0_main_LT -> f161_0_main_LT : arg1'=-n+arg1, arg2'=arg2p3, (-1+n >= 0 /\ 2-n+arg1 > 0 /\ 1-arg1 >= 0), cost: 1 7: f212_0_main_LE -> f161_0_main_LT : arg1'=-1+arg1, arg2'=arg2p3, -arg1+arg2 >= 0, cost: 1 8: f212_0_main_LE -> f212_0_main_LE : arg2'=2*arg2, (-arg1+arg2 < 0 /\ arg2 > 0), cost: 1 11: f212_0_main_LE -> f212_0_main_LE : arg1'=-n3+arg1, arg2'=1, (-arg1+arg2 >= 0 /\ -1+n3 >= 0 /\ -2+arg2 <= 0 /\ 1-n3+arg1 > 0), cost: 1 9: __init -> f161_0_main_LT : arg1'=arg1p1, arg2'=arg2p1, (1+arg1p1 > 0), cost: 1 Loop Acceleration Original rule: f212_0_main_LE -> f212_0_main_LE : arg1'=-1+arg1, arg2'=1, (arg1 > 0 /\ -arg1+arg2 >= 0), cost: 1 New rule: f212_0_main_LE -> f212_0_main_LE : arg1'=-n3+arg1, arg2'=1, (-arg1+arg2 >= 0 /\ -1+n3 >= 0 /\ -2+arg2 <= 0 /\ 1-n3+arg1 > 0), cost: 1 arg1 > 0 [0]: montonic decrease yields 1-n3+arg1 > 0 arg1 > 0 [1]: eventual increase yields (1 <= 0 /\ arg1 > 0) -arg1+arg2 >= 0 [0]: eventual increase yields (-arg1+arg2 >= 0 /\ -2+arg2 <= 0) Replacement map: {arg1 > 0 -> 1-n3+arg1 > 0, -arg1+arg2 >= 0 -> (-arg1+arg2 >= 0 /\ -2+arg2 <= 0)} Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 8[(-arg1+arg2 < 0 /\ arg2 > 0)], 11[(-arg1+arg2 >= 0 /\ -1+n3 >= 0 /\ -2+arg2 <= 0 /\ 1-n3+arg1 > 0)] Blocked [{}, {10[T]}, {7[T]}, {8[T]}, {11[T]}] Acceleration Failed marked recursive suffix as redundant Step with 7 Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 8[(-arg1+arg2 < 0 /\ arg2 > 0)], 11[(-arg1+arg2 >= 0 /\ -1+n3 >= 0 /\ -2+arg2 <= 0 /\ 1-n3+arg1 > 0)], 7[(-arg1+arg2 >= 0)] Blocked [{}, {10[T]}, {7[T]}, {8[T]}, {11[T]}, {}] Acceleration Failed marked recursive suffix as redundant Step with 6 Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 8[(-arg1+arg2 < 0 /\ arg2 > 0)], 11[(-arg1+arg2 >= 0 /\ -1+n3 >= 0 /\ -2+arg2 <= 0 /\ 1-n3+arg1 > 0)], 7[(-arg1+arg2 >= 0)], 6[(1+arg1 > 0)] Blocked [{}, {10[T]}, {7[T]}, {8[T]}, {11[T]}, {}, {}] Covered Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 8[(-arg1+arg2 < 0 /\ arg2 > 0)], 11[(-arg1+arg2 >= 0 /\ -1+n3 >= 0 /\ -2+arg2 <= 0 /\ 1-n3+arg1 > 0)], 7[(-arg1+arg2 >= 0)] Blocked [{}, {10[T]}, {7[T]}, {8[T]}, {11[T]}, {6[T]}] Step with 10 Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 8[(-arg1+arg2 < 0 /\ arg2 > 0)], 11[(-arg1+arg2 >= 0 /\ -1+n3 >= 0 /\ -2+arg2 <= 0 /\ 1-n3+arg1 > 0)], 7[(-arg1+arg2 >= 0)], 10[(-1+n >= 0 /\ 2-n+arg1 > 0 /\ 1-arg1 >= 0)] Blocked [{}, {10[T]}, {7[T]}, {8[T]}, {11[T]}, {6[T]}, {10[T]}] Covered Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 8[(-arg1+arg2 < 0 /\ arg2 > 0)], 11[(-arg1+arg2 >= 0 /\ -1+n3 >= 0 /\ -2+arg2 <= 0 /\ 1-n3+arg1 > 0)], 7[(-arg1+arg2 >= 0)] Blocked [{}, {10[T]}, {7[T]}, {8[T]}, {11[T]}, {6[T], 10[T]}] Backtrack Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 8[(-arg1+arg2 < 0 /\ arg2 > 0)], 11[(-arg1+arg2 >= 0 /\ -1+n3 >= 0 /\ -2+arg2 <= 0 /\ 1-n3+arg1 > 0)] Blocked [{}, {10[T]}, {7[T]}, {8[T]}, {7[T], 11[T]}] Backtrack Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 8[(-arg1+arg2 < 0 /\ arg2 > 0)] Blocked [{}, {10[T]}, {7[T]}, {8[T], 11[T]}] Step with 7 Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 8[(-arg1+arg2 < 0 /\ arg2 > 0)], 7[(-arg1+arg2 >= 0)] Blocked [{}, {10[T]}, {7[T]}, {8[T], 11[T]}, {}] Step with 10 Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 8[(-arg1+arg2 < 0 /\ arg2 > 0)], 7[(-arg1+arg2 >= 0)], 10[(-1+n >= 0 /\ 2-n+arg1 > 0 /\ 1-arg1 >= 0)] Blocked [{}, {10[T]}, {7[T]}, {8[T], 11[T]}, {}, {10[T]}] Covered Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 8[(-arg1+arg2 < 0 /\ arg2 > 0)], 7[(-arg1+arg2 >= 0)] Blocked [{}, {10[T]}, {7[T]}, {8[T], 11[T]}, {10[T]}] Step with 6 Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 8[(-arg1+arg2 < 0 /\ arg2 > 0)], 7[(-arg1+arg2 >= 0)], 6[(1+arg1 > 0)] Blocked [{}, {10[T]}, {7[T]}, {8[T], 11[T]}, {10[T]}, {}] Covered Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 8[(-arg1+arg2 < 0 /\ arg2 > 0)], 7[(-arg1+arg2 >= 0)] Blocked [{}, {10[T]}, {7[T]}, {8[T], 11[T]}, {6[T], 10[T]}] Backtrack Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 8[(-arg1+arg2 < 0 /\ arg2 > 0)] Blocked [{}, {10[T]}, {7[T]}, {7[T], 8[T], 11[T]}] Backtrack Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)] Blocked [{}, {10[T]}, {7[T], 8[T]}] Step with 11 Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 11[(-arg1+arg2 >= 0 /\ -1+n3 >= 0 /\ -2+arg2 <= 0 /\ 1-n3+arg1 > 0)] Blocked [{}, {10[T]}, {7[T], 8[T]}, {11[T]}] Step with 7 Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 11[(-arg1+arg2 >= 0 /\ -1+n3 >= 0 /\ -2+arg2 <= 0 /\ 1-n3+arg1 > 0)], 7[(-arg1+arg2 >= 0)] Blocked [{}, {10[T]}, {7[T], 8[T]}, {11[T]}, {}] Covered Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)], 11[(-arg1+arg2 >= 0 /\ -1+n3 >= 0 /\ -2+arg2 <= 0 /\ 1-n3+arg1 > 0)] Blocked [{}, {10[T]}, {7[T], 8[T]}, {7[T], 11[T]}] Backtrack Trace 9[(1+arg1p1 > 0)], 6[(1+arg1 > 0)] Blocked [{}, {10[T]}, {7[T], 8[T], 11[T]}] Backtrack Trace 9[(1+arg1p1 > 0)] Blocked [{}, {6[T], 10[T]}] Backtrack Trace Blocked [{9[T]}] Accept unknown Build SHA: a05f16bf13df659c382799650051f91bf6828c7b