./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 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.2.2-?-6c24879 [2022-07-12 18:26:53,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 18:26:53,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 18:26:53,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 18:26:53,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 18:26:53,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 18:26:53,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 18:26:53,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 18:26:53,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 18:26:53,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 18:26:53,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 18:26:53,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 18:26:53,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 18:26:53,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 18:26:53,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 18:26:53,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 18:26:53,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 18:26:53,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 18:26:53,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 18:26:53,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 18:26:53,500 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 18:26:53,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 18:26:53,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 18:26:53,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 18:26:53,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 18:26:53,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 18:26:53,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 18:26:53,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 18:26:53,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 18:26:53,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 18:26:53,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 18:26:53,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 18:26:53,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 18:26:53,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 18:26:53,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 18:26:53,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 18:26:53,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 18:26:53,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 18:26:53,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 18:26:53,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 18:26:53,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 18:26:53,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 18:26:53,512 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-12 18:26:53,525 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 18:26:53,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 18:26:53,526 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 18:26:53,526 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 18:26:53,526 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 18:26:53,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 18:26:53,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 18:26:53,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 18:26:53,528 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 18:26:53,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 18:26:53,528 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 18:26:53,528 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-12 18:26:53,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 18:26:53,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 18:26:53,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 18:26:53,529 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-12 18:26:53,529 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-12 18:26:53,530 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-12 18:26:53,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 18:26:53,530 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 18:26:53,530 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 18:26:53,530 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 18:26:53,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 18:26:53,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 18:26:53,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 18:26:53,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 18:26:53,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 18:26:53,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 18:26:53,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 18:26:53,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 18:26:53,532 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153befabdb18c1c2f846632066e19b90cbc378dfb8679471b93a472fb2c83770 [2022-07-12 18:26:53,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 18:26:53,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 18:26:53,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 18:26:53,708 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 18:26:53,709 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 18:26:53,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c [2022-07-12 18:26:53,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78d6d2808/cb0f062fbef4459690910c95c95ccd6f/FLAG357e274f7 [2022-07-12 18:26:54,086 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 18:26:54,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c [2022-07-12 18:26:54,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78d6d2808/cb0f062fbef4459690910c95c95ccd6f/FLAG357e274f7 [2022-07-12 18:26:54,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78d6d2808/cb0f062fbef4459690910c95c95ccd6f [2022-07-12 18:26:54,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 18:26:54,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 18:26:54,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 18:26:54,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 18:26:54,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 18:26:54,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:26:54" (1/1) ... [2022-07-12 18:26:54,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57e445fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:26:54, skipping insertion in model container [2022-07-12 18:26:54,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:26:54" (1/1) ... [2022-07-12 18:26:54,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 18:26:54,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 18:26:54,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 18:26:54,693 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 18:26:54,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 18:26:54,710 INFO L208 MainTranslator]: Completed translation [2022-07-12 18:26:54,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:26:54 WrapperNode [2022-07-12 18:26:54,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 18:26:54,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 18:26:54,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 18:26:54,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 18:26:54,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:26:54" (1/1) ... [2022-07-12 18:26:54,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:26:54" (1/1) ... [2022-07-12 18:26:54,743 INFO L137 Inliner]: procedures = 8, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2022-07-12 18:26:54,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 18:26:54,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 18:26:54,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 18:26:54,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 18:26:54,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:26:54" (1/1) ... [2022-07-12 18:26:54,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:26:54" (1/1) ... [2022-07-12 18:26:54,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:26:54" (1/1) ... [2022-07-12 18:26:54,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:26:54" (1/1) ... [2022-07-12 18:26:54,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:26:54" (1/1) ... [2022-07-12 18:26:54,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:26:54" (1/1) ... [2022-07-12 18:26:54,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:26:54" (1/1) ... [2022-07-12 18:26:54,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 18:26:54,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 18:26:54,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 18:26:54,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 18:26:54,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:26:54" (1/1) ... [2022-07-12 18:26:54,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 18:26:54,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 18:26:54,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 18:26:54,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 18:26:54,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 18:26:54,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 18:26:54,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 18:26:54,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 18:26:54,868 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 18:26:54,869 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 18:26:54,971 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 18:26:54,975 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 18:26:54,975 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 18:26:54,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:26:54 BoogieIcfgContainer [2022-07-12 18:26:54,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 18:26:54,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 18:26:54,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 18:26:54,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 18:26:54,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:26:54" (1/3) ... [2022-07-12 18:26:54,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516b9f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:26:54, skipping insertion in model container [2022-07-12 18:26:54,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:26:54" (2/3) ... [2022-07-12 18:26:54,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516b9f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:26:54, skipping insertion in model container [2022-07-12 18:26:54,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:26:54" (3/3) ... [2022-07-12 18:26:54,988 INFO L111 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe.c [2022-07-12 18:26:54,998 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 18:26:54,999 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-07-12 18:26:55,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 18:26:55,046 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7ddd8ad7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7d51632f [2022-07-12 18:26:55,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-07-12 18:26:55,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 2.0) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 18:26:55,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-12 18:26:55,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:26:55,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-12 18:26:55,059 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-07-12 18:26:55,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:26:55,065 INFO L85 PathProgramCache]: Analyzing trace with hash 28740435, now seen corresponding path program 1 times [2022-07-12 18:26:55,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 18:26:55,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568736712] [2022-07-12 18:26:55,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:26:55,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 18:26:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:26:55,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:26:55,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 18:26:55,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568736712] [2022-07-12 18:26:55,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568736712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:26:55,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:26:55,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 18:26:55,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750286007] [2022-07-12 18:26:55,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:26:55,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 18:26:55,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 18:26:55,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 18:26:55,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 18:26:55,198 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 2.0) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 18:26:55,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:26:55,208 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2022-07-12 18:26:55,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 18:26:55,210 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-12 18:26:55,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:26:55,215 INFO L225 Difference]: With dead ends: 32 [2022-07-12 18:26:55,215 INFO L226 Difference]: Without dead ends: 30 [2022-07-12 18:26:55,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 18:26:55,220 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 18:26:55,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 18:26:55,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-12 18:26:55,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-07-12 18:26:55,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 18:26:55,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2022-07-12 18:26:55,247 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 5 [2022-07-12 18:26:55,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:26:55,248 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2022-07-12 18:26:55,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 18:26:55,248 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-07-12 18:26:55,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-12 18:26:55,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:26:55,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-12 18:26:55,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 18:26:55,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-07-12 18:26:55,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:26:55,251 INFO L85 PathProgramCache]: Analyzing trace with hash 28698151, now seen corresponding path program 1 times [2022-07-12 18:26:55,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 18:26:55,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209613215] [2022-07-12 18:26:55,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:26:55,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 18:26:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:26:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:26:55,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 18:26:55,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209613215] [2022-07-12 18:26:55,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209613215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:26:55,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:26:55,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 18:26:55,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851877785] [2022-07-12 18:26:55,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:26:55,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 18:26:55,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 18:26:55,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 18:26:55,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 18:26:55,315 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 18:26:55,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:26:55,335 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-07-12 18:26:55,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 18:26:55,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-12 18:26:55,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:26:55,336 INFO L225 Difference]: With dead ends: 29 [2022-07-12 18:26:55,336 INFO L226 Difference]: Without dead ends: 27 [2022-07-12 18:26:55,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 18:26:55,338 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 18:26:55,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 19 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 18:26:55,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-12 18:26:55,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-12 18:26:55,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 18:26:55,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-07-12 18:26:55,341 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 5 [2022-07-12 18:26:55,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:26:55,341 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-07-12 18:26:55,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 18:26:55,342 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-07-12 18:26:55,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-12 18:26:55,342 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:26:55,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-12 18:26:55,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 18:26:55,343 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-07-12 18:26:55,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:26:55,343 INFO L85 PathProgramCache]: Analyzing trace with hash 28698875, now seen corresponding path program 1 times [2022-07-12 18:26:55,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 18:26:55,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012445488] [2022-07-12 18:26:55,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:26:55,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 18:26:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:26:55,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:26:55,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 18:26:55,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012445488] [2022-07-12 18:26:55,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012445488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:26:55,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:26:55,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 18:26:55,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874926256] [2022-07-12 18:26:55,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:26:55,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 18:26:55,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 18:26:55,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 18:26:55,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 18:26:55,366 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 18:26:55,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:26:55,379 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-07-12 18:26:55,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 18:26:55,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-12 18:26:55,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:26:55,380 INFO L225 Difference]: With dead ends: 28 [2022-07-12 18:26:55,380 INFO L226 Difference]: Without dead ends: 28 [2022-07-12 18:26:55,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 18:26:55,382 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 18:26:55,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 40 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 18:26:55,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-12 18:26:55,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-07-12 18:26:55,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.875) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 18:26:55,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2022-07-12 18:26:55,386 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 5 [2022-07-12 18:26:55,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:26:55,386 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2022-07-12 18:26:55,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 18:26:55,386 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2022-07-12 18:26:55,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-12 18:26:55,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:26:55,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-12 18:26:55,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 18:26:55,387 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-07-12 18:26:55,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:26:55,388 INFO L85 PathProgramCache]: Analyzing trace with hash 28698921, now seen corresponding path program 1 times [2022-07-12 18:26:55,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 18:26:55,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860339798] [2022-07-12 18:26:55,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:26:55,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 18:26:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 18:26:55,396 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 18:26:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 18:26:55,413 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 18:26:55,413 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 18:26:55,414 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 13 remaining) [2022-07-12 18:26:55,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2022-07-12 18:26:55,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2022-07-12 18:26:55,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2022-07-12 18:26:55,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2022-07-12 18:26:55,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2022-07-12 18:26:55,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2022-07-12 18:26:55,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2022-07-12 18:26:55,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2022-07-12 18:26:55,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2022-07-12 18:26:55,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2022-07-12 18:26:55,418 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2022-07-12 18:26:55,418 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2022-07-12 18:26:55,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 18:26:55,421 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-07-12 18:26:55,424 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 18:26:55,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 06:26:55 BoogieIcfgContainer [2022-07-12 18:26:55,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 18:26:55,445 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 18:26:55,445 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 18:26:55,445 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 18:26:55,446 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:26:54" (3/4) ... [2022-07-12 18:26:55,447 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 18:26:55,477 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 18:26:55,478 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 18:26:55,478 INFO L158 Benchmark]: Toolchain (without parser) took 947.10ms. Allocated memory was 98.6MB in the beginning and 132.1MB in the end (delta: 33.6MB). Free memory was 39.4MB in the beginning and 58.9MB in the end (delta: -19.5MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2022-07-12 18:26:55,479 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 98.6MB. Free memory was 55.5MB in the beginning and 55.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 18:26:55,479 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.12ms. Allocated memory was 98.6MB in the beginning and 132.1MB in the end (delta: 33.6MB). Free memory was 39.2MB in the beginning and 106.7MB in the end (delta: -67.6MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2022-07-12 18:26:55,480 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.05ms. Allocated memory is still 132.1MB. Free memory was 106.7MB in the beginning and 105.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 18:26:55,480 INFO L158 Benchmark]: Boogie Preprocessor took 22.25ms. Allocated memory is still 132.1MB. Free memory was 105.1MB in the beginning and 104.2MB in the end (delta: 992.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 18:26:55,480 INFO L158 Benchmark]: RCFGBuilder took 209.31ms. Allocated memory is still 132.1MB. Free memory was 104.2MB in the beginning and 92.6MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 18:26:55,481 INFO L158 Benchmark]: TraceAbstraction took 466.37ms. Allocated memory is still 132.1MB. Free memory was 92.1MB in the beginning and 60.6MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-07-12 18:26:55,481 INFO L158 Benchmark]: Witness Printer took 32.79ms. Allocated memory is still 132.1MB. Free memory was 60.6MB in the beginning and 58.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 18:26:55,483 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 98.6MB. Free memory was 55.5MB in the beginning and 55.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.12ms. Allocated memory was 98.6MB in the beginning and 132.1MB in the end (delta: 33.6MB). Free memory was 39.2MB in the beginning and 106.7MB in the end (delta: -67.6MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.05ms. Allocated memory is still 132.1MB. Free memory was 106.7MB in the beginning and 105.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.25ms. Allocated memory is still 132.1MB. Free memory was 105.1MB in the beginning and 104.2MB in the end (delta: 992.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 209.31ms. Allocated memory is still 132.1MB. Free memory was 104.2MB in the beginning and 92.6MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 466.37ms. Allocated memory is still 132.1MB. Free memory was 92.1MB in the beginning and 60.6MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 32.79ms. Allocated memory is still 132.1MB. Free memory was 60.6MB in the beginning and 58.9MB in the end (delta: 1.7MB). 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: -1]: 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) [L5] int i; [L6] i = 0 VAL [\old(array_size)=2, a={4:3}, a={4:3}, 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={4:3}, a={4:3}, array_size=2, i=0, j=1, min=0] [L10] COND TRUE j < array_size VAL [\old(array_size)=2, a={4:3}, a={4:3}, array_size=2, i=0, j=1, min=0] [L12] a[j] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: 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 1 procedures, 32 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 93 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21 IncrementalHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 77 mSDtfsCounter, 21 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 8, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2022-07-12 18:26:55,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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)