LTS Termination Proof

by AProVE

Input

Integer Transition System

Proof

1 Switch to Cooperation Termination Proof

We consider the following cutpoint-transitions:
f2907_0_createMap_LE f2907_0_createMap_LE f2907_0_createMap_LE: x1 = x1x2 = x2x3 = x3x4 = x4x5 = x5x6 = x6x7 = x7x8 = x8x9 = x9x10 = x10x11 = x11x12 = x12x13 = x13
f3374_0_put_NULL f3374_0_put_NULL f3374_0_put_NULL: x1 = x1x2 = x2x3 = x3x4 = x4x5 = x5x6 = x6x7 = x7x8 = x8x9 = x9x10 = x10x11 = x11x12 = x12x13 = x13
f3898_0_transfer_GE f3898_0_transfer_GE f3898_0_transfer_GE: x1 = x1x2 = x2x3 = x3x4 = x4x5 = x5x6 = x6x7 = x7x8 = x8x9 = x9x10 = x10x11 = x11x12 = x12x13 = x13
f3452_0_put_EQ f3452_0_put_EQ f3452_0_put_EQ: x1 = x1x2 = x2x3 = x3x4 = x4x5 = x5x6 = x6x7 = x7x8 = x8x9 = x9x10 = x10x11 = x11x12 = x12x13 = x13
f1_0_main_Load f1_0_main_Load f1_0_main_Load: x1 = x1x2 = x2x3 = x3x4 = x4x5 = x5x6 = x6x7 = x7x8 = x8x9 = x9x10 = x10x11 = x11x12 = x12x13 = x13
f3993_0_transfer_ArrayAccess f3993_0_transfer_ArrayAccess f3993_0_transfer_ArrayAccess: x1 = x1x2 = x2x3 = x3x4 = x4x5 = x5x6 = x6x7 = x7x8 = x8x9 = x9x10 = x10x11 = x11x12 = x12x13 = x13
__init __init __init: x1 = x1x2 = x2x3 = x3x4 = x4x5 = x5x6 = x6x7 = x7x8 = x8x9 = x9x10 = x10x11 = x11x12 = x12x13 = x13
and for every transition t, a duplicate t is considered.

2 SCC Decomposition

We consider subproblems for each of the 3 SCC(s) of the program graph.

2.1 SCC Subproblem 1/3

Here we consider the SCC { f2907_0_createMap_LE }.

2.1.1 Transition Removal

We remove transition 2 using the following ranking functions, which are bounded by 0.

f2907_0_createMap_LE: x2

2.1.2 Trivial Cooperation Program

There are no more "sharp" transitions in the cooperation program. Hence the cooperation termination is proved.

2.2 SCC Subproblem 2/3

Here we consider the SCC { f3374_0_put_NULL, f3452_0_put_EQ }.

2.2.1 Transition Removal

We remove transitions 4, 6, 7, 8, 9, 10, 5 using the following ranking functions, which are bounded by 0.

f3374_0_put_NULL: 1 + x4
f3452_0_put_EQ: x3

2.2.2 Trivial Cooperation Program

There are no more "sharp" transitions in the cooperation program. Hence the cooperation termination is proved.

2.3 SCC Subproblem 3/3

Here we consider the SCC { f3898_0_transfer_GE, f3993_0_transfer_ArrayAccess }.

2.3.1 Transition Removal

We remove transition 15 using the following ranking functions, which are bounded by 0.

f3898_0_transfer_GE: −1 − x4 + 2⋅x8
f3993_0_transfer_ArrayAccess: −1 − x3 + 2⋅x10

2.3.2 Transition Removal

We remove transition 13 using the following ranking functions, which are bounded by 0.

f3898_0_transfer_GE: −1 − x4 + x7 + x8
f3993_0_transfer_ArrayAccess: −2 − x3 + x10 + x13

2.3.3 Transition Removal

We remove transitions 16, 14 using the following ranking functions, which are bounded by 0.

f3993_0_transfer_ArrayAccess: x4
f3898_0_transfer_GE: −1

2.3.4 Trivial Cooperation Program

There are no more "sharp" transitions in the cooperation program. Hence the cooperation termination is proved.

Tool configuration

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