./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for memory safety (deref-memtrack)
Using default analysis
Version b2eff8ba
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a6b6d5-d48e-4c29-a329-32630d7fdd0a/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a6b6d5-d48e-4c29-a329-32630d7fdd0a/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a6b6d5-d48e-4c29-a329-32630d7fdd0a/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a6b6d5-d48e-4c29-a329-32630d7fdd0a/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a6b6d5-d48e-4c29-a329-32630d7fdd0a/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a6b6d5-d48e-4c29-a329-32630d7fdd0a/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 153befabdb18c1c2f846632066e19b90cbc378dfb8679471b93a472fb2c83770
...........................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE(valid-deref)
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-b2eff8b
[2021-10-28 23:00:41,353 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-10-28 23:00:41,357 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-10-28 23:00:41,431 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-10-28 23:00:41,432 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-10-28 23:00:41,438 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-10-28 23:00:41,440 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-10-28 23:00:41,445 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-10-28 23:00:41,449 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-10-28 23:00:41,456 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-10-28 23:00:41,458 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-10-28 23:00:41,461 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-10-28 23:00:41,461 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-10-28 23:00:41,465 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-10-28 23:00:41,468 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-10-28 23:00:41,474 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-10-28 23:00:41,476 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-10-28 23:00:41,478 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-10-28 23:00:41,481 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-10-28 23:00:41,490 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-10-28 23:00:41,493 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-10-28 23:00:41,494 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-10-28 23:00:41,498 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-10-28 23:00:41,500 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-10-28 23:00:41,511 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-10-28 23:00:41,511 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-10-28 23:00:41,512 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-10-28 23:00:41,515 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-10-28 23:00:41,516 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-10-28 23:00:41,518 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-10-28 23:00:41,519 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-10-28 23:00:41,520 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-10-28 23:00:41,523 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-10-28 23:00:41,525 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-10-28 23:00:41,527 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-10-28 23:00:41,527 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-10-28 23:00:41,528 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-10-28 23:00:41,529 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-10-28 23:00:41,529 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-10-28 23:00:41,530 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-10-28 23:00:41,531 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-10-28 23:00:41,533 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a6b6d5-d48e-4c29-a329-32630d7fdd0a/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2021-10-28 23:00:41,587 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-10-28 23:00:41,588 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-10-28 23:00:41,589 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-10-28 23:00:41,597 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-10-28 23:00:41,599 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-10-28 23:00:41,600 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-10-28 23:00:41,600 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-10-28 23:00:41,600 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-10-28 23:00:41,601 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-10-28 23:00:41,601 INFO  L138        SettingsManager]:  * Check unreachability of error function in SV-COMP mode=false
[2021-10-28 23:00:41,602 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-10-28 23:00:41,603 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-10-28 23:00:41,603 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-10-28 23:00:41,603 INFO  L138        SettingsManager]:  * Check for the main procedure if all allocated memory was freed=true
[2021-10-28 23:00:41,603 INFO  L138        SettingsManager]:  * Bitprecise bitfields=true
[2021-10-28 23:00:41,603 INFO  L138        SettingsManager]:  * SV-COMP memtrack compatibility mode=true
[2021-10-28 23:00:41,604 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-10-28 23:00:41,604 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2021-10-28 23:00:41,604 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-10-28 23:00:41,604 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-10-28 23:00:41,604 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-10-28 23:00:41,604 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-10-28 23:00:41,605 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-10-28 23:00:41,605 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-28 23:00:41,605 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-10-28 23:00:41,605 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-10-28 23:00:41,605 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-10-28 23:00:41,605 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-10-28 23:00:41,606 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-10-28 23:00:41,606 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a6b6d5-d48e-4c29-a329-32630d7fdd0a/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a6b6d5-d48e-4c29-a329-32630d7fdd0a/bin/uautomizer-GMMbpWq8iD
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153befabdb18c1c2f846632066e19b90cbc378dfb8679471b93a472fb2c83770
[2021-10-28 23:00:41,907 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-10-28 23:00:41,930 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-10-28 23:00:41,933 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-10-28 23:00:41,935 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-10-28 23:00:41,936 INFO  L275        PluginConnector]: CDTParser initialized
[2021-10-28 23:00:41,937 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a6b6d5-d48e-4c29-a329-32630d7fdd0a/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c
[2021-10-28 23:00:42,035 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a6b6d5-d48e-4c29-a329-32630d7fdd0a/bin/uautomizer-GMMbpWq8iD/data/9a9c7db11/463c8dc337b7400582ee1f75c01f5810/FLAG7614594a4
[2021-10-28 23:00:42,569 INFO  L306              CDTParser]: Found 1 translation units.
[2021-10-28 23:00:42,569 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a6b6d5-d48e-4c29-a329-32630d7fdd0a/sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c
[2021-10-28 23:00:42,576 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a6b6d5-d48e-4c29-a329-32630d7fdd0a/bin/uautomizer-GMMbpWq8iD/data/9a9c7db11/463c8dc337b7400582ee1f75c01f5810/FLAG7614594a4
[2021-10-28 23:00:42,934 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a6b6d5-d48e-4c29-a329-32630d7fdd0a/bin/uautomizer-GMMbpWq8iD/data/9a9c7db11/463c8dc337b7400582ee1f75c01f5810
[2021-10-28 23:00:42,939 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-10-28 23:00:42,940 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2021-10-28 23:00:42,943 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-10-28 23:00:42,943 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-10-28 23:00:42,947 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-10-28 23:00:42,948 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:00:42" (1/1) ...
[2021-10-28 23:00:42,950 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ec9bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:42, skipping insertion in model container
[2021-10-28 23:00:42,950 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:00:42" (1/1) ...
[2021-10-28 23:00:42,960 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-10-28 23:00:42,975 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-10-28 23:00:43,212 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-10-28 23:00:43,225 INFO  L203         MainTranslator]: Completed pre-run
[2021-10-28 23:00:43,244 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-10-28 23:00:43,258 INFO  L208         MainTranslator]: Completed translation
[2021-10-28 23:00:43,259 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:43 WrapperNode
[2021-10-28 23:00:43,259 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-10-28 23:00:43,268 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-10-28 23:00:43,268 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-10-28 23:00:43,268 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-10-28 23:00:43,284 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:43" (1/1) ...
[2021-10-28 23:00:43,287 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:43" (1/1) ...
[2021-10-28 23:00:43,297 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:43" (1/1) ...
[2021-10-28 23:00:43,297 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:43" (1/1) ...
[2021-10-28 23:00:43,322 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:43" (1/1) ...
[2021-10-28 23:00:43,326 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:43" (1/1) ...
[2021-10-28 23:00:43,328 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:43" (1/1) ...
[2021-10-28 23:00:43,330 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-10-28 23:00:43,331 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-10-28 23:00:43,331 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-10-28 23:00:43,331 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-10-28 23:00:43,334 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:43" (1/1) ...
[2021-10-28 23:00:43,344 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-28 23:00:43,359 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a6b6d5-d48e-4c29-a329-32630d7fdd0a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:00:43,382 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a6b6d5-d48e-4c29-a329-32630d7fdd0a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-10-28 23:00:43,400 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a6b6d5-d48e-4c29-a329-32630d7fdd0a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-10-28 23:00:43,440 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-10-28 23:00:43,441 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-10-28 23:00:43,441 INFO  L138     BoogieDeclarations]: Found implementation of procedure SelectionSort
[2021-10-28 23:00:43,441 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2021-10-28 23:00:43,441 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-10-28 23:00:43,441 INFO  L130     BoogieDeclarations]: Found specification of procedure SelectionSort
[2021-10-28 23:00:43,442 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2021-10-28 23:00:43,443 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2021-10-28 23:00:43,443 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2021-10-28 23:00:43,443 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-10-28 23:00:43,443 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-10-28 23:00:43,444 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-10-28 23:00:43,772 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-10-28 23:00:43,773 INFO  L299             CfgBuilder]: Removed 2 assume(true) statements.
[2021-10-28 23:00:43,775 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:00:43 BoogieIcfgContainer
[2021-10-28 23:00:43,776 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-10-28 23:00:43,778 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-10-28 23:00:43,778 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-10-28 23:00:43,791 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-10-28 23:00:43,791 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:00:42" (1/3) ...
[2021-10-28 23:00:43,793 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d9499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:00:43, skipping insertion in model container
[2021-10-28 23:00:43,793 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:43" (2/3) ...
[2021-10-28 23:00:43,793 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d9499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:00:43, skipping insertion in model container
[2021-10-28 23:00:43,794 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:00:43" (3/3) ...
[2021-10-28 23:00:43,795 INFO  L111   eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe.c
[2021-10-28 23:00:43,802 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-10-28 23:00:43,816 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations.
[2021-10-28 23:00:43,921 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-10-28 23:00:43,930 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-10-28 23:00:43,930 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 13 error locations.
[2021-10-28 23:00:43,951 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 41 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 34 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2021-10-28 23:00:43,960 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-10-28 23:00:43,960 INFO  L505         BasicCegarLoop]: Found error trace
[2021-10-28 23:00:43,961 INFO  L513         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:00:43,962 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting SelectionSortErr4REQUIRES_VIOLATION === [SelectionSortErr0REQUIRES_VIOLATION, SelectionSortErr1REQUIRES_VIOLATION, SelectionSortErr2REQUIRES_VIOLATION, SelectionSortErr3REQUIRES_VIOLATION (and 9 more)] ===
[2021-10-28 23:00:43,969 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:00:43,970 INFO  L85        PathProgramCache]: Analyzing trace with hash 229154885, now seen corresponding path program 1 times
[2021-10-28 23:00:43,982 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:00:43,983 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394549511]
[2021-10-28 23:00:43,983 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:00:43,986 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:00:44,157 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:00:44,306 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-10-28 23:00:44,309 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:00:44,322 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:00:44,323 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:00:44,324 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394549511]
[2021-10-28 23:00:44,325 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394549511] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:00:44,326 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 23:00:44,327 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-10-28 23:00:44,334 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201094528]
[2021-10-28 23:00:44,339 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-10-28 23:00:44,349 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:00:44,364 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-10-28 23:00:44,365 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-10-28 23:00:44,367 INFO  L87              Difference]: Start difference. First operand  has 41 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 34 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand  has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:00:44,546 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:00:44,547 INFO  L93              Difference]: Finished difference Result 41 states and 43 transitions.
[2021-10-28 23:00:44,548 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-10-28 23:00:44,549 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2021-10-28 23:00:44,550 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:00:44,576 INFO  L225             Difference]: With dead ends: 41
[2021-10-28 23:00:44,576 INFO  L226             Difference]: Without dead ends: 34
[2021-10-28 23:00:44,579 INFO  L786         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-10-28 23:00:44,594 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2021-10-28 23:00:44,611 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34.
[2021-10-28 23:00:44,613 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 34 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 29 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:00:44,615 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions.
[2021-10-28 23:00:44,617 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 11
[2021-10-28 23:00:44,618 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:00:44,618 INFO  L470      AbstractCegarLoop]: Abstraction has 34 states and 36 transitions.
[2021-10-28 23:00:44,619 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:00:44,619 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions.
[2021-10-28 23:00:44,619 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-10-28 23:00:44,620 INFO  L505         BasicCegarLoop]: Found error trace
[2021-10-28 23:00:44,620 INFO  L513         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:00:44,620 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-10-28 23:00:44,620 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting SelectionSortErr0REQUIRES_VIOLATION === [SelectionSortErr0REQUIRES_VIOLATION, SelectionSortErr1REQUIRES_VIOLATION, SelectionSortErr2REQUIRES_VIOLATION, SelectionSortErr3REQUIRES_VIOLATION (and 9 more)] ===
[2021-10-28 23:00:44,621 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:00:44,621 INFO  L85        PathProgramCache]: Analyzing trace with hash 229154931, now seen corresponding path program 1 times
[2021-10-28 23:00:44,622 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:00:44,622 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543679091]
[2021-10-28 23:00:44,623 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:00:44,623 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:00:44,658 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-28 23:00:44,659 INFO  L355             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-10-28 23:00:44,679 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-28 23:00:44,707 INFO  L133   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-10-28 23:00:44,707 INFO  L627         BasicCegarLoop]: Counterexample is feasible
[2021-10-28 23:00:44,710 INFO  L764   garLoopResultBuilder]: Registering result UNSAFE for location SelectionSortErr0REQUIRES_VIOLATION
[2021-10-28 23:00:44,713 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr1REQUIRES_VIOLATION
[2021-10-28 23:00:44,713 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr2REQUIRES_VIOLATION
[2021-10-28 23:00:44,713 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr3REQUIRES_VIOLATION
[2021-10-28 23:00:44,714 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr4REQUIRES_VIOLATION
[2021-10-28 23:00:44,714 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr5REQUIRES_VIOLATION
[2021-10-28 23:00:44,714 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr6REQUIRES_VIOLATION
[2021-10-28 23:00:44,714 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr7REQUIRES_VIOLATION
[2021-10-28 23:00:44,715 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr8REQUIRES_VIOLATION
[2021-10-28 23:00:44,715 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr9REQUIRES_VIOLATION
[2021-10-28 23:00:44,716 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr10REQUIRES_VIOLATION
[2021-10-28 23:00:44,716 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr11REQUIRES_VIOLATION
[2021-10-28 23:00:44,716 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK
[2021-10-28 23:00:44,717 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-10-28 23:00:44,721 INFO  L731         BasicCegarLoop]: Path program histogram: [1, 1]
[2021-10-28 23:00:44,726 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2021-10-28 23:00:44,753 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:00:44 BoogieIcfgContainer
[2021-10-28 23:00:44,753 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-10-28 23:00:44,755 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2021-10-28 23:00:44,756 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2021-10-28 23:00:44,756 INFO  L275        PluginConnector]: Witness Printer initialized
[2021-10-28 23:00:44,757 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:00:43" (3/4) ...
[2021-10-28 23:00:44,759 INFO  L131         WitnessPrinter]: Generating witness for reachability counterexample
[2021-10-28 23:00:44,830 INFO  L141         WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a6b6d5-d48e-4c29-a329-32630d7fdd0a/bin/uautomizer-GMMbpWq8iD/witness.graphml
[2021-10-28 23:00:44,830 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-10-28 23:00:44,832 INFO  L168              Benchmark]: Toolchain (without parser) took 1890.71 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 57.7 MB in the beginning and 91.0 MB in the end (delta: -33.2 MB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-28 23:00:44,833 INFO  L168              Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 92.3 MB. Free memory was 61.6 MB in the beginning and 61.5 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-28 23:00:44,834 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 322.09 ms. Allocated memory is still 92.3 MB. Free memory was 57.6 MB in the beginning and 68.4 MB in the end (delta: -10.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
[2021-10-28 23:00:44,835 INFO  L168              Benchmark]: Boogie Preprocessor took 62.22 ms. Allocated memory is still 92.3 MB. Free memory was 68.4 MB in the beginning and 66.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-28 23:00:44,835 INFO  L168              Benchmark]: RCFGBuilder took 445.04 ms. Allocated memory is still 92.3 MB. Free memory was 66.8 MB in the beginning and 56.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
[2021-10-28 23:00:44,836 INFO  L168              Benchmark]: TraceAbstraction took 975.40 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 56.0 MB in the beginning and 92.5 MB in the end (delta: -36.5 MB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-28 23:00:44,837 INFO  L168              Benchmark]: Witness Printer took 75.70 ms. Allocated memory is still 123.7 MB. Free memory was 92.5 MB in the beginning and 91.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-28 23:00:44,845 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.33 ms. Allocated memory is still 92.3 MB. Free memory was 61.6 MB in the beginning and 61.5 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB.
 * CACSL2BoogieTranslator took 322.09 ms. Allocated memory is still 92.3 MB. Free memory was 57.6 MB in the beginning and 68.4 MB in the end (delta: -10.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
 * Boogie Preprocessor took 62.22 ms. Allocated memory is still 92.3 MB. Free memory was 68.4 MB in the beginning and 66.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
 * RCFGBuilder took 445.04 ms. Allocated memory is still 92.3 MB. Free memory was 66.8 MB in the beginning and 56.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
 * TraceAbstraction took 975.40 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 56.0 MB in the beginning and 92.5 MB in the end (delta: -36.5 MB). There was no memory consumed. Max. memory is 16.1 GB.
 * Witness Printer took 75.70 ms. Allocated memory is still 123.7 MB. Free memory was 92.5 MB in the beginning and 91.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - CounterExampleResult [Line: 12]: pointer dereference may fail
    pointer dereference may fail
We found a FailurePath: 
[L23]             int *a;
[L24]             int array_size = __VERIFIER_nondet_int();
[L25]  CALL       SelectionSort(a, array_size)
       VAL        [\old(array_size)=2, a={4:5}]
[L5]              int i;
[L6]              i = 0
       VAL        [\old(array_size)=2, a={4:5}, a={4:5}, array_size=2, i=0]
[L6]   COND TRUE  i < array_size - 1
[L8]              int j, min, temp;
[L9]              min = i
[L10]             j = i+1
       VAL        [\old(array_size)=2, a={4:5}, a={4:5}, array_size=2, i=0, j=1, min=0]
[L10]  COND TRUE  j < array_size
       VAL        [\old(array_size)=2, a={4:5}, a={4:5}, array_size=2, i=0, j=1, min=0]
[L12]             a[j]

  - UnprovableResult [Line: 12]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: 12]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: 12]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: 16]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: 16]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: 17]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: 17]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: 17]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: 17]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: 22]: Unable to prove that all allocated memory was freed
    Unable to prove that all allocated memory was freed
 Reason: Not analyzed. 
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 4 procedures, 41 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 42 SDslu, 10 SDs, 0 SdLazy, 45 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2021-10-28 23:00:44,912 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a6b6d5-d48e-4c29-a329-32630d7fdd0a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...