NO

Solver Timeout: 4
Global Timeout: 300
Maximum number of concurrent processes: 900
*******************************************************************************************
*********************** UNPROCESSED TRANSITION SYSTEMS PER FUNCTION ***********************
*******************************************************************************************


List of LLVMGraphs + assumeNodes + staticAssertNodes [1] :

+++++++++++++++++++++++++++++++ main +++++++++++++++++++++++++++++++
+                                                                  +
Init Location: 0
Transitions:
<l0, l1, true, seq{main__func_return_ -> 0, main_a -> ¿functionCall(__VERIFIER_nondet_int), main_b -> ¿functionCall(__VERIFIER_nondet_int)}>
<l1, l2, true>
<l2, l5, not((main_b > 0))>
<l2, l3, (main_b > 0)>
<l3, l4, true, seq{main_r -> ¿functionCall(__VERIFIER_nondet_int), main_b -> ((main_a - 1) - main_r), main_a -> ((main_a - 1) - main_r)}>
<l4, l2, true>
<l5, l6, true, seq{main__func_return_ -> 0}>

Fresh variables:

Undef variables:

Abstraction variables:

Exit nodes:

Accepting locations:

Asserts:

+ Assume Nodes [0]: ++++++++++++++++++++++++++++++++++++++++++++++++
       
+ Static Assert Nodes [0]: +++++++++++++++++++++++++++++++++++++++++
       
+ After preprocess (paralelization): ++++++++++++++++++++++++++++++

Init Location: 0
Transitions:
<l0, l7, true, seq{main__func_return_ -> 0}>
<l7, l8, true, seq{varCall_1 -> ¿functionCall(__VERIFIER_nondet_int)}>
<l8, l9, true, seq{main_a -> varCall_1}>
<l9, l10, true, seq{varCall_2 -> ¿functionCall(__VERIFIER_nondet_int)}>
<l10, l1, true, seq{main_b -> varCall_2}>
<l1, l2, true>
<l2, l3, (main_b > 0)>
<l2, l5, not((main_b > 0))>
<l3, l11, true, seq{varCall_3 -> ¿functionCall(__VERIFIER_nondet_int)}>
<l11, l4, true, seq{main_r -> varCall_3, main_b -> ((main_a - 1) - main_r), main_a -> ((main_a - 1) - main_r)}>
<l4, l2, true>
<l5, l6, true, seq{main__func_return_ -> 0}>

Fresh variables:

Undef variables:

Abstraction variables:

Exit nodes:
6, 
Accepting locations:

Asserts:

+                                                                  +
+++++++++++++++++++++++++++++++ main +++++++++++++++++++++++++++++++


Function Return and Parameters Information [2 functions]:
    function name: __VERIFIER_nondet_int [1 return + 0 parameters]        demangled: __VERIFIER_nondet_int
        __VERIFIER_nondet_int__func_return_      [function result] : int
    function name: main [1 return + 0 parameters]        demangled: main
        main__func_return_      [function result] : int


AST Ident Scanner Information [5 idents]:
__VERIFIER_nondet_int | function | [integer, ()] | <line: 3, col: 1> | <line: 9, col: 9> <line: 10, col: 9> <line: 13, col: 14>
main | function | [integer, ()] | <line: 5, col: 1>
a | local variable | integer | <line: 6, col: 5> | <line: 9, col: 5> <line: 14, col: 13> <line: 15, col: 9> <line: 15, col: 13>
b | local variable | integer | <line: 7, col: 5> | <line: 10, col: 5> <line: 12, col: 12> <line: 14, col: 9>
r | local variable | integer | <line: 8, col: 5> | <line: 13, col: 9> <line: 14, col: 21> <line: 15, col: 21>

Main function: main
Preprocessed LLVMGraph
Init Location: 0
Transitions:
<l0, l2, (main_a = undef4) /\ (main_b = undef5)>
<l2, l2, (main_b > 0), par{main_a -> ((main_a - 1) - undef6), main_b -> ((main_a - 1) - undef6)}>
<l2, l6, not((main_b > 0))>

Fresh variables:
undef4, undef5, undef6, 

Undef variables:
undef4, undef5, undef6, 

Abstraction variables:

Exit nodes:
6, 
Accepting locations:

Asserts:

*************************************************************
*******************************************************************************************
***********************       WORKING TRANSITION SYSTEM (DAG)       ***********************
*******************************************************************************************

Init Location: 0
Graph 0:
Transitions:
Variables:

Graph 1:
Transitions:
<l2, l2, 1 <= main_b, {main_a -> -1 + main_a - undef6, main_b -> -1 + main_a - undef6, rest remain the same}>
Variables:
main_a, main_b

Graph 2:
Transitions:
Variables:

Precedence: 
Graph 0

Graph 1
<l0, l2, main_a = undef4 /\ main_b = undef5, {all remain the same}>

Graph 2
<l2, l6, main_b <= 0, {all remain the same}>

Map Locations to Subgraph:
( 0 , 0 )
( 2 , 1 )
( 6 , 2 )

*******************************************************************************************
********************************    CHECKING ASSERTIONS    ********************************
*******************************************************************************************

Proving termination of subgraph 0
Proving termination of subgraph 1
Checking unfeasibility...
Time used: 0.001627

Checking conditional termination of SCC {l2}...

LOG: CALL solveLinear

LOG: RETURN solveLinear - Elapsed time: 0.000483s

LOG: CALL solveLinear

LOG: RETURN solveLinear - Elapsed time: 0.001377s
[22960 : 22962]
[22960 : 22963]
Successful child: 22962
[ Invariant Graph ]
Strengthening and disabling transitions...

LOG: CALL solverLinear in Graph for feasibility

LOG: RETURN solveLinear in Graph for feasibility
It's unfeasible. Removing transition: 
<l2, l2, 1 <= main_b, {main_a -> -1 + main_a - undef6, main_b -> -1 + main_a - undef6, rest remain the same}>
[ Termination Graph ]
Strengthening and disabling transitions...

LOG: CALL solverLinear in Graph for feasibility

LOG: RETURN solveLinear in Graph for feasibility
It's unfeasible. Removing transition: 
<l2, l2, 1 <= main_b, {main_a -> -1 + main_a - undef6, main_b -> -1 + main_a - undef6, rest remain the same}>
New Graphs: 

LOG: CALL check - Post:main_b <= 0 - Process 1
* Exit transition: <l0, l2, main_a = undef4 /\ main_b = undef5, {all remain the same}>
* Postcondition  : main_b <= 0

LOG: CALL solveLinear

LOG: RETURN solveLinear - Elapsed time: 0.000285s
> Postcondition is not implied!

LOG: RETURN check - Elapsed time: 0.000333s
INVARIANTS: 
2: 
Quasi-INVARIANTS to narrow Graph: 
2: main_b <= 0 , 
Narrowing transition: 
<l2, l2, 1 <= main_b, {main_a -> -1 + main_a - undef6, main_b -> -1 + main_a - undef6, rest remain the same}>

LOG: Narrow transition size 1
invGraph after Narrowing: 
Transitions:
<l2, l2, 1 <= main_b, {main_a -> -1 + main_a - undef6, main_b -> -1 + main_a - undef6, rest remain the same}>
Variables:
main_a, main_b
Checking conditional termination of SCC {l2}...

LOG: CALL solveLinear

LOG: RETURN solveLinear - Elapsed time: 0.000342s

LOG: CALL solveLinear

LOG: RETURN solveLinear - Elapsed time: 0.001115s
[22960 : 22967]
[22960 : 22968]
Solving with 1 template(s).

LOG: CALL solveNonLinearGetFirstSolution

LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.011263s
Time used: 0.010856

[22960 : 22974]
[22960 : 22978]
Successful child: 22978

Program does NOT terminate