./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 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c7bb5b-a8e8-47cd-870a-b47b1bd6d282/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c7bb5b-a8e8-47cd-870a-b47b1bd6d282/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c7bb5b-a8e8-47cd-870a-b47b1bd6d282/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c7bb5b-a8e8-47cd-870a-b47b1bd6d282/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c7bb5b-a8e8-47cd-870a-b47b1bd6d282/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c7bb5b-a8e8-47cd-870a-b47b1bd6d282/bin/uautomizer-ZXIjhQolGL --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 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:25:45,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:25:45,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:25:45,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:25:45,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:25:45,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:25:45,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:25:45,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:25:45,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:25:45,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:25:45,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:25:45,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:25:45,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:25:45,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:25:45,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:25:45,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:25:45,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:25:45,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:25:45,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:25:45,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:25:45,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:25:45,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:25:45,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:25:45,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:25:45,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:25:45,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:25:45,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:25:45,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:25:45,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:25:45,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:25:45,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:25:45,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:25:45,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:25:45,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:25:45,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:25:45,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:25:45,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:25:45,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:25:45,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:25:45,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:25:45,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:25:45,408 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c7bb5b-a8e8-47cd-870a-b47b1bd6d282/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 05:25:45,464 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:25:45,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:25:45,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:25:45,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:25:45,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:25:45,467 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:25:45,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:25:45,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:25:45,469 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:25:45,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:25:45,470 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:25:45,470 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:25:45,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:25:45,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:25:45,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:25:45,471 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:25:45,472 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:25:45,472 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:25:45,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:25:45,472 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:25:45,473 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:25:45,473 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:25:45,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:25:45,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:25:45,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:25:45,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:25:45,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:25:45,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:25:45,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:25:45,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:25:45,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:25:45,475 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_c7c7bb5b-a8e8-47cd-870a-b47b1bd6d282/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c7bb5b-a8e8-47cd-870a-b47b1bd6d282/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153befabdb18c1c2f846632066e19b90cbc378dfb8679471b93a472fb2c83770 [2021-11-19 05:25:45,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:25:45,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:25:45,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:25:45,790 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:25:45,790 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:25:45,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c7bb5b-a8e8-47cd-870a-b47b1bd6d282/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c [2021-11-19 05:25:45,868 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c7bb5b-a8e8-47cd-870a-b47b1bd6d282/bin/uautomizer-ZXIjhQolGL/data/91dfa8770/3acd120ce4724828a926f3808435db8c/FLAG90578a7e6 [2021-11-19 05:25:46,415 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:25:46,416 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c7bb5b-a8e8-47cd-870a-b47b1bd6d282/sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c [2021-11-19 05:25:46,426 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c7bb5b-a8e8-47cd-870a-b47b1bd6d282/bin/uautomizer-ZXIjhQolGL/data/91dfa8770/3acd120ce4724828a926f3808435db8c/FLAG90578a7e6 [2021-11-19 05:25:46,784 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c7bb5b-a8e8-47cd-870a-b47b1bd6d282/bin/uautomizer-ZXIjhQolGL/data/91dfa8770/3acd120ce4724828a926f3808435db8c [2021-11-19 05:25:46,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:25:46,788 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:25:46,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:25:46,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:25:46,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:25:46,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:25:46" (1/1) ... [2021-11-19 05:25:46,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a36e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:46, skipping insertion in model container [2021-11-19 05:25:46,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:25:46" (1/1) ... [2021-11-19 05:25:46,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:25:46,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:25:47,014 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:25:47,023 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:25:47,039 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:25:47,053 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:25:47,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:47 WrapperNode [2021-11-19 05:25:47,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:25:47,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:25:47,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:25:47,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:25:47,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:47" (1/1) ... [2021-11-19 05:25:47,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:47" (1/1) ... [2021-11-19 05:25:47,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:47" (1/1) ... [2021-11-19 05:25:47,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:47" (1/1) ... [2021-11-19 05:25:47,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:47" (1/1) ... [2021-11-19 05:25:47,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:47" (1/1) ... [2021-11-19 05:25:47,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:47" (1/1) ... [2021-11-19 05:25:47,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:25:47,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:25:47,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:25:47,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:25:47,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:47" (1/1) ... [2021-11-19 05:25:47,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:25:47,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c7bb5b-a8e8-47cd-870a-b47b1bd6d282/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:25:47,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c7bb5b-a8e8-47cd-870a-b47b1bd6d282/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:25:47,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c7bb5b-a8e8-47cd-870a-b47b1bd6d282/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:25:47,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 05:25:47,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:25:47,186 INFO L138 BoogieDeclarations]: Found implementation of procedure SelectionSort [2021-11-19 05:25:47,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 05:25:47,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-19 05:25:47,188 INFO L130 BoogieDeclarations]: Found specification of procedure SelectionSort [2021-11-19 05:25:47,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 05:25:47,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 05:25:47,188 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 05:25:47,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 05:25:47,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:25:47,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:25:47,255 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:25:47,257 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:25:47,430 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:25:47,449 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:25:47,450 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 05:25:47,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:25:47 BoogieIcfgContainer [2021-11-19 05:25:47,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:25:47,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:25:47,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:25:47,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:25:47,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:25:46" (1/3) ... [2021-11-19 05:25:47,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff1b0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:25:47, skipping insertion in model container [2021-11-19 05:25:47,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:47" (2/3) ... [2021-11-19 05:25:47,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff1b0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:25:47, skipping insertion in model container [2021-11-19 05:25:47,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:25:47" (3/3) ... [2021-11-19 05:25:47,462 INFO L111 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe.c [2021-11-19 05:25:47,468 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:25:47,468 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-11-19 05:25:47,538 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:25:47,546 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 [2021-11-19 05:25:47,547 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-11-19 05:25:47,572 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) [2021-11-19 05:25:47,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 05:25:47,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:25:47,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:25:47,582 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting SelectionSortErr4REQUIRES_VIOLATION === [SelectionSortErr0REQUIRES_VIOLATION, SelectionSortErr1REQUIRES_VIOLATION, SelectionSortErr2REQUIRES_VIOLATION, SelectionSortErr3REQUIRES_VIOLATION (and 9 more)] === [2021-11-19 05:25:47,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:25:47,587 INFO L85 PathProgramCache]: Analyzing trace with hash 229154885, now seen corresponding path program 1 times [2021-11-19 05:25:47,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:25:47,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908970603] [2021-11-19 05:25:47,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:25:47,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:25:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:25:47,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:25:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:25:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:25:47,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:25:47,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908970603] [2021-11-19 05:25:47,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908970603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:25:47,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:25:47,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:25:47,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980638820] [2021-11-19 05:25:47,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:25:47,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:25:47,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:25:47,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:25:47,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:25:47,896 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) [2021-11-19 05:25:48,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:25:48,066 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-11-19 05:25:48,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:25:48,069 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 [2021-11-19 05:25:48,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:25:48,077 INFO L225 Difference]: With dead ends: 41 [2021-11-19 05:25:48,078 INFO L226 Difference]: Without dead ends: 34 [2021-11-19 05:25:48,080 INFO L932 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 [2021-11-19 05:25:48,086 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 42 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:25:48,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 47 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:25:48,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-19 05:25:48,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-19 05:25:48,125 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) [2021-11-19 05:25:48,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2021-11-19 05:25:48,128 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 11 [2021-11-19 05:25:48,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:25:48,129 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2021-11-19 05:25:48,130 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) [2021-11-19 05:25:48,130 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2021-11-19 05:25:48,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 05:25:48,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:25:48,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:25:48,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:25:48,132 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting SelectionSortErr0REQUIRES_VIOLATION === [SelectionSortErr0REQUIRES_VIOLATION, SelectionSortErr1REQUIRES_VIOLATION, SelectionSortErr2REQUIRES_VIOLATION, SelectionSortErr3REQUIRES_VIOLATION (and 9 more)] === [2021-11-19 05:25:48,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:25:48,133 INFO L85 PathProgramCache]: Analyzing trace with hash 229154931, now seen corresponding path program 1 times [2021-11-19 05:25:48,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:25:48,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489555324] [2021-11-19 05:25:48,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:25:48,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:25:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:25:48,150 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:25:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:25:48,181 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:25:48,181 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 05:25:48,183 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location SelectionSortErr0REQUIRES_VIOLATION (12 of 13 remaining) [2021-11-19 05:25:48,185 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr1REQUIRES_VIOLATION (11 of 13 remaining) [2021-11-19 05:25:48,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr2REQUIRES_VIOLATION (10 of 13 remaining) [2021-11-19 05:25:48,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr3REQUIRES_VIOLATION (9 of 13 remaining) [2021-11-19 05:25:48,187 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr4REQUIRES_VIOLATION (8 of 13 remaining) [2021-11-19 05:25:48,187 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr5REQUIRES_VIOLATION (7 of 13 remaining) [2021-11-19 05:25:48,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr6REQUIRES_VIOLATION (6 of 13 remaining) [2021-11-19 05:25:48,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr7REQUIRES_VIOLATION (5 of 13 remaining) [2021-11-19 05:25:48,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr8REQUIRES_VIOLATION (4 of 13 remaining) [2021-11-19 05:25:48,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr9REQUIRES_VIOLATION (3 of 13 remaining) [2021-11-19 05:25:48,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr10REQUIRES_VIOLATION (2 of 13 remaining) [2021-11-19 05:25:48,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr11REQUIRES_VIOLATION (1 of 13 remaining) [2021-11-19 05:25:48,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2021-11-19 05:25:48,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:25:48,194 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-19 05:25:48,198 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:25:48,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:25:48 BoogieIcfgContainer [2021-11-19 05:25:48,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:25:48,218 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:25:48,218 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:25:48,219 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:25:48,219 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:25:47" (3/4) ... [2021-11-19 05:25:48,222 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 05:25:48,256 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c7bb5b-a8e8-47cd-870a-b47b1bd6d282/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 05:25:48,257 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:25:48,258 INFO L158 Benchmark]: Toolchain (without parser) took 1469.61ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 69.8MB in the beginning and 80.2MB in the end (delta: -10.3MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2021-11-19 05:25:48,258 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 98.6MB. Free memory is still 69.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:25:48,259 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.67ms. Allocated memory is still 98.6MB. Free memory was 69.7MB in the beginning and 60.5MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:25:48,260 INFO L158 Benchmark]: Boogie Preprocessor took 36.84ms. Allocated memory is still 98.6MB. Free memory was 60.5MB in the beginning and 59.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:25:48,260 INFO L158 Benchmark]: RCFGBuilder took 359.08ms. Allocated memory is still 98.6MB. Free memory was 58.9MB in the beginning and 48.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:25:48,261 INFO L158 Benchmark]: TraceAbstraction took 763.56ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 47.8MB in the beginning and 82.3MB in the end (delta: -34.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:25:48,261 INFO L158 Benchmark]: Witness Printer took 38.74ms. Allocated memory is still 127.9MB. Free memory was 82.3MB in the beginning and 80.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:25:48,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 98.6MB. Free memory is still 69.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.67ms. Allocated memory is still 98.6MB. Free memory was 69.7MB in the beginning and 60.5MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.84ms. Allocated memory is still 98.6MB. Free memory was 60.5MB in the beginning and 59.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 359.08ms. Allocated memory is still 98.6MB. Free memory was 58.9MB in the beginning and 48.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 763.56ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 47.8MB in the beginning and 82.3MB in the end (delta: -34.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 38.74ms. Allocated memory is still 127.9MB. Free memory was 82.3MB in the beginning and 80.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 0.7s, 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: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 36 mSDtfsCounter, 32 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 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! [2021-11-19 05:25:48,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c7bb5b-a8e8-47cd-870a-b47b1bd6d282/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)