unknown Initial ITS Start location: __init Program variables: arg1 arg2 0: f1_0_main_Load -> f48_0_up_GE : arg1'=arg1p1, arg2'=arg2p1, (-arg1p1+arg2 == 0 /\ 1+arg2 > 0 /\ arg1 > 0), cost: 1 1: f48_0_up_GE -> f48_0_up_GE\' : arg1'=arg1p2, arg2'=arg2p2, (arg1-arg1p2 == 0 /\ -15+arg1 < 0), cost: 1 2: f48_0_up_GE\' -> f48_0_up_GE : arg1'=arg1p3, arg2'=arg2p3, (-9-10*x4+arg1 < 0 /\ 1-10*x4+arg1 >= 0 /\ -15+arg1 < 0 /\ 1-10*x4+arg1-arg1p3 == 0), cost: 1 3: __init -> f1_0_main_Load : arg1'=arg1p4, arg2'=arg2p4, T, cost: 1 Chained Linear Paths Start location: __init Program variables: arg1 arg2 5: f48_0_up_GE -> f48_0_up_GE : arg1'=arg1p3, arg2'=arg2p3, (-15+arg1p2 < 0 /\ arg1-arg1p2 == 0 /\ 1-10*x4-arg1p3+arg1p2 == 0 /\ 1-10*x4+arg1p2 >= 0 /\ -15+arg1 < 0 /\ -9-10*x4+arg1p2 < 0), cost: 1 4: __init -> f48_0_up_GE : arg1'=arg1p1, arg2'=arg2p1, (1+arg2p4 > 0 /\ arg1p4 > 0 /\ -arg1p1+arg2p4 == 0), cost: 1 Eliminating location f1_0_main_Load by chaining: Applied chaining First rule: __init -> f1_0_main_Load : arg1'=arg1p4, arg2'=arg2p4, T, cost: 1 Second rule: f1_0_main_Load -> f48_0_up_GE : arg1'=arg1p1, arg2'=arg2p1, (-arg1p1+arg2 == 0 /\ 1+arg2 > 0 /\ arg1 > 0), cost: 1 New rule: __init -> f48_0_up_GE : arg1'=arg1p1, arg2'=arg2p1, (1+arg2p4 > 0 /\ arg1p4 > 0 /\ -arg1p1+arg2p4 == 0), cost: 1 Applied deletion Removed the following rules: 0 3 Eliminating location f48_0_up_GE\' by chaining: Applied chaining First rule: f48_0_up_GE -> f48_0_up_GE\' : arg1'=arg1p2, arg2'=arg2p2, (arg1-arg1p2 == 0 /\ -15+arg1 < 0), cost: 1 Second rule: f48_0_up_GE\' -> f48_0_up_GE : arg1'=arg1p3, arg2'=arg2p3, (-9-10*x4+arg1 < 0 /\ 1-10*x4+arg1 >= 0 /\ -15+arg1 < 0 /\ 1-10*x4+arg1-arg1p3 == 0), cost: 1 New rule: f48_0_up_GE -> f48_0_up_GE : arg1'=arg1p3, arg2'=arg2p3, (-15+arg1p2 < 0 /\ arg1-arg1p2 == 0 /\ 1-10*x4-arg1p3+arg1p2 == 0 /\ 1-10*x4+arg1p2 >= 0 /\ -15+arg1 < 0 /\ -9-10*x4+arg1p2 < 0), cost: 1 Applied deletion Removed the following rules: 1 2 Simplified Transitions Start location: __init Program variables: arg1 arg2 7: f48_0_up_GE -> f48_0_up_GE : arg1'=1-10*x4+arg1, arg2'=arg2p3, (-9-10*x4+arg1 < 0 /\ 1-10*x4+arg1 >= 0 /\ -15+arg1 < 0), cost: 1 6: __init -> f48_0_up_GE : arg1'=arg2p4, arg2'=arg2p1, (1+arg2p4 > 0), cost: 1 Propagated Equalities Original rule: __init -> f48_0_up_GE : arg1'=arg1p1, arg2'=arg2p1, (1+arg2p4 > 0 /\ arg1p4 > 0 /\ -arg1p1+arg2p4 == 0), cost: 1 New rule: __init -> f48_0_up_GE : arg1'=arg2p4, arg2'=arg2p1, (0 == 0 /\ 1+arg2p4 > 0 /\ arg1p4 > 0), cost: 1 propagated equality arg1p1 = arg2p4 Simplified Guard Original rule: __init -> f48_0_up_GE : arg1'=arg2p4, arg2'=arg2p1, (0 == 0 /\ 1+arg2p4 > 0 /\ arg1p4 > 0), cost: 1 New rule: __init -> f48_0_up_GE : arg1'=arg2p4, arg2'=arg2p1, (1+arg2p4 > 0 /\ arg1p4 > 0), cost: 1 Eliminated Temporary Variables via Transitive Closure Original rule: __init -> f48_0_up_GE : arg1'=arg2p4, arg2'=arg2p1, (1+arg2p4 > 0 /\ arg1p4 > 0), cost: 1 New rule: __init -> f48_0_up_GE : arg1'=arg2p4, arg2'=arg2p1, (1+arg2p4 > 0), cost: 1 Propagated Equalities Original rule: f48_0_up_GE -> f48_0_up_GE : arg1'=arg1p3, arg2'=arg2p3, (-15+arg1p2 < 0 /\ arg1-arg1p2 == 0 /\ 1-10*x4-arg1p3+arg1p2 == 0 /\ 1-10*x4+arg1p2 >= 0 /\ -15+arg1 < 0 /\ -9-10*x4+arg1p2 < 0), cost: 1 New rule: f48_0_up_GE -> f48_0_up_GE : arg1'=1-10*x4+arg1p2, arg2'=arg2p3, (0 == 0 /\ -15+arg1p2 < 0 /\ arg1-arg1p2 == 0 /\ 1-10*x4+arg1p2 >= 0 /\ -15+arg1 < 0 /\ -9-10*x4+arg1p2 < 0), cost: 1 propagated equality arg1p3 = 1-10*x4+arg1p2 Propagated Equalities Original rule: f48_0_up_GE -> f48_0_up_GE : arg1'=1-10*x4+arg1p2, arg2'=arg2p3, (0 == 0 /\ -15+arg1p2 < 0 /\ arg1-arg1p2 == 0 /\ 1-10*x4+arg1p2 >= 0 /\ -15+arg1 < 0 /\ -9-10*x4+arg1p2 < 0), cost: 1 New rule: f48_0_up_GE -> f48_0_up_GE : arg1'=1-10*x4+arg1, arg2'=arg2p3, (0 == 0 /\ -9-10*x4+arg1 < 0 /\ 1-10*x4+arg1 >= 0 /\ -15+arg1 < 0), cost: 1 propagated equality arg1p2 = arg1 Simplified Guard Original rule: f48_0_up_GE -> f48_0_up_GE : arg1'=1-10*x4+arg1, arg2'=arg2p3, (0 == 0 /\ -9-10*x4+arg1 < 0 /\ 1-10*x4+arg1 >= 0 /\ -15+arg1 < 0), cost: 1 New rule: f48_0_up_GE -> f48_0_up_GE : arg1'=1-10*x4+arg1, arg2'=arg2p3, (-9-10*x4+arg1 < 0 /\ 1-10*x4+arg1 >= 0 /\ -15+arg1 < 0), cost: 1 Step with 6 Trace 6[(1+arg2p4 > 0)] Blocked [{}, {}] Step with 7 Trace 6[(1+arg2p4 > 0)], 7[(-9-10*x4+arg1 < 0 /\ 1-10*x4+arg1 >= 0 /\ -15+arg1 < 0)] Blocked [{}, {}, {}] Accelerate Start location: __init Program variables: arg1 arg2 7: f48_0_up_GE -> f48_0_up_GE : arg1'=1-10*x4+arg1, arg2'=arg2p3, (-9-10*x4+arg1 < 0 /\ 1-10*x4+arg1 >= 0 /\ -15+arg1 < 0), cost: 1 8: f48_0_up_GE -> f48_0_up_GE : arg1'=n+arg1-10*n*x4, arg2'=arg2p3, (15-arg1 > 0 /\ 9+10*x4-arg1 > 0 /\ -1+n >= 0 /\ 1-10*x4+arg1 >= 0 /\ 1-10*x4 <= 0 /\ -10*(-1+n)*x4+n-10*x4+arg1 >= 0), cost: 1 6: __init -> f48_0_up_GE : arg1'=arg2p4, arg2'=arg2p1, (1+arg2p4 > 0), cost: 1 Loop Acceleration Original rule: f48_0_up_GE -> f48_0_up_GE : arg1'=1-10*x4+arg1, arg2'=arg2p3, (-9-10*x4+arg1 < 0 /\ 1-10*x4+arg1 >= 0 /\ -15+arg1 < 0), cost: 1 New rule: f48_0_up_GE -> f48_0_up_GE : arg1'=n+arg1-10*n*x4, arg2'=arg2p3, (15-arg1 > 0 /\ 9+10*x4-arg1 > 0 /\ -1+n >= 0 /\ 1-10*x4+arg1 >= 0 /\ 1-10*x4 <= 0 /\ -10*(-1+n)*x4+n-10*x4+arg1 >= 0), cost: 1 15-arg1 > 0 [0]: monotonic increase yields 15-arg1 > 0, dependencies: 9+10*x4-arg1 > 0 15-arg1 > 0 [1]: eventual decrease yields (15-arg1 > 0 /\ 16+10*(-1+n)*x4-n-arg1 > 0) 15-arg1 > 0 [2]: eventual increase yields (15-arg1 > 0 /\ 1-10*x4 <= 0) 9+10*x4-arg1 > 0 [0]: montonic decrease yields 10+10*(-1+n)*x4-n+10*x4-arg1 > 0, dependencies: 15-arg1 > 0 9+10*x4-arg1 > 0 [1]: eventual increase yields (9+10*x4-arg1 > 0 /\ 1-10*x4 <= 0) 1-10*x4+arg1 >= 0 [0]: eventual decrease yields (1-10*x4+arg1 >= 0 /\ -10*(-1+n)*x4+n-10*x4+arg1 >= 0) 1-10*x4+arg1 >= 0 [1]: eventual increase yields (-1+10*x4 <= 0 /\ 1-10*x4+arg1 >= 0) Replacement map: {15-arg1 > 0 -> 15-arg1 > 0, 9+10*x4-arg1 > 0 -> (9+10*x4-arg1 > 0 /\ 1-10*x4 <= 0), 1-10*x4+arg1 >= 0 -> (1-10*x4+arg1 >= 0 /\ -10*(-1+n)*x4+n-10*x4+arg1 >= 0)} Trace 6[(1+arg2p4 > 0)], 8[(15-arg1 > 0 /\ 9+10*x4-arg1 > 0 /\ -1+n >= 0 /\ 1-10*x4+arg1 >= 0 /\ 1-10*x4 <= 0 /\ -10*(-1+n)*x4+n-10*x4+arg1 >= 0)] Blocked [{}, {}, {7[T], 8[T]}] Backtrack Trace 6[(1+arg2p4 > 0)] Blocked [{}, {8[T]}] Step with 7 Trace 6[(1+arg2p4 > 0)], 7[(-9-10*x4+arg1 < 0 /\ 1-10*x4+arg1 >= 0 /\ -15+arg1 < 0)] Blocked [{}, {8[T]}, {}] Covered Trace 6[(1+arg2p4 > 0)] Blocked [{}, {7[T], 8[T]}] Backtrack Trace Blocked [{6[T]}] Accept unknown Build SHA: a05f16bf13df659c382799650051f91bf6828c7b