./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc --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 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:10:47,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:10:47,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:10:47,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:10:47,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:10:47,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:10:47,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:10:47,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:10:47,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:10:47,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:10:47,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:10:47,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:10:47,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:10:47,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:10:47,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:10:47,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:10:47,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:10:47,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:10:47,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:10:47,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:10:47,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:10:47,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:10:47,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:10:47,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:10:47,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:10:47,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:10:47,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:10:47,189 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:10:47,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:10:47,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:10:47,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:10:47,193 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:10:47,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:10:47,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:10:47,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:10:47,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:10:47,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:10:47,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:10:47,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:10:47,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:10:47,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:10:47,203 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-02 21:10:47,247 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:10:47,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:10:47,252 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:10:47,252 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:10:47,253 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:10:47,253 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:10:47,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:10:47,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:10:47,255 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:10:47,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:10:47,256 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:10:47,256 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:10:47,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:10:47,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:10:47,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:10:47,257 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 21:10:47,258 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 21:10:47,258 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 21:10:47,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:10:47,258 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:10:47,258 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:10:47,259 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:10:47,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:10:47,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:10:47,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:10:47,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:10:47,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:10:47,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:10:47,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:10:47,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:10:47,261 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_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 [2022-11-02 21:10:47,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:10:47,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:10:47,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:10:47,668 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:10:47,669 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:10:47,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2022-11-02 21:10:47,750 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/data/004c95cfd/f7dc9d6461884f219196cb8386ccb1ea/FLAG8cc99724e [2022-11-02 21:10:48,412 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:10:48,413 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2022-11-02 21:10:48,448 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/data/004c95cfd/f7dc9d6461884f219196cb8386ccb1ea/FLAG8cc99724e [2022-11-02 21:10:48,695 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/data/004c95cfd/f7dc9d6461884f219196cb8386ccb1ea [2022-11-02 21:10:48,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:10:48,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:10:48,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:10:48,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:10:48,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:10:48,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:10:48" (1/1) ... [2022-11-02 21:10:48,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b33d93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:48, skipping insertion in model container [2022-11-02 21:10:48,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:10:48" (1/1) ... [2022-11-02 21:10:48,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:10:48,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:10:49,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:10:49,472 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.IllegalArgumentException: This array type is incomplete! Cannot extract actual dimensions. at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CTranslationUtil.getConstantFirstDimensionOfArray(CTranslationUtil.java:210) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.InitializationHandler.constructIndexToInitInfo(InitializationHandler.java:1272) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.InitializationHandler.constructInitializerInfo(InitializationHandler.java:1228) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.InitializationHandler.initialize(InitializationHandler.java:236) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.InitializationHandler.initialize(InitializationHandler.java:207) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.PostProcessor.createUltimateInitProcedure(PostProcessor.java:806) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.PostProcessor.postProcess(PostProcessor.java:212) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:628) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-02 21:10:49,483 INFO L158 Benchmark]: Toolchain (without parser) took 781.54ms. Allocated memory is still 107.0MB. Free memory was 62.6MB in the beginning and 75.7MB in the end (delta: -13.1MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2022-11-02 21:10:49,485 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 107.0MB. Free memory is still 80.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:10:49,487 INFO L158 Benchmark]: CACSL2BoogieTranslator took 778.27ms. Allocated memory is still 107.0MB. Free memory was 62.3MB in the beginning and 75.7MB in the end (delta: -13.3MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2022-11-02 21:10:49,490 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 107.0MB. Free memory is still 80.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 778.27ms. Allocated memory is still 107.0MB. Free memory was 62.3MB in the beginning and 75.7MB in the end (delta: -13.3MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: IllegalArgumentException: This array type is incomplete! Cannot extract actual dimensions. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: IllegalArgumentException: This array type is incomplete! Cannot extract actual dimensions.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CTranslationUtil.getConstantFirstDimensionOfArray(CTranslationUtil.java:210) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc --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 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:10:51,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:10:51,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:10:52,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:10:52,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:10:52,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:10:52,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:10:52,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:10:52,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:10:52,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:10:52,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:10:52,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:10:52,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:10:52,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:10:52,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:10:52,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:10:52,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:10:52,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:10:52,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:10:52,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:10:52,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:10:52,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:10:52,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:10:52,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:10:52,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:10:52,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:10:52,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:10:52,077 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:10:52,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:10:52,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:10:52,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:10:52,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:10:52,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:10:52,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:10:52,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:10:52,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:10:52,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:10:52,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:10:52,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:10:52,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:10:52,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:10:52,096 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-02 21:10:52,126 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:10:52,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:10:52,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:10:52,132 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:10:52,134 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:10:52,134 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:10:52,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:10:52,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:10:52,137 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:10:52,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:10:52,139 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:10:52,139 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:10:52,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:10:52,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:10:52,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:10:52,140 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 21:10:52,140 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 21:10:52,141 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 21:10:52,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:10:52,141 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:10:52,141 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:10:52,142 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:10:52,142 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:10:52,142 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:10:52,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:10:52,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:10:52,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:10:52,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:10:52,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:10:52,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:10:52,144 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:10:52,144 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:10:52,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:10:52,145 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 [2022-11-02 21:10:52,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:10:52,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:10:52,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:10:52,568 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:10:52,569 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:10:52,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2022-11-02 21:10:52,662 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/data/802233ede/9c4531966d3f4fd396b43e206185ec88/FLAGee9eebc8b [2022-11-02 21:10:53,481 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:10:53,482 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2022-11-02 21:10:53,501 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/data/802233ede/9c4531966d3f4fd396b43e206185ec88/FLAGee9eebc8b [2022-11-02 21:10:53,684 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/data/802233ede/9c4531966d3f4fd396b43e206185ec88 [2022-11-02 21:10:53,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:10:53,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:10:53,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:10:53,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:10:53,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:10:53,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:10:53" (1/1) ... [2022-11-02 21:10:53,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e139a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:53, skipping insertion in model container [2022-11-02 21:10:53,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:10:53" (1/1) ... [2022-11-02 21:10:53,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:10:53,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:10:54,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:10:54,391 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-02 21:10:54,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:10:54,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:10:54,530 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:10:54,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:10:54,706 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:10:54,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:54 WrapperNode [2022-11-02 21:10:54,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:10:54,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:10:54,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:10:54,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:10:54,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:54" (1/1) ... [2022-11-02 21:10:54,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:54" (1/1) ... [2022-11-02 21:10:54,839 INFO L138 Inliner]: procedures = 175, calls = 119, calls flagged for inlining = 30, calls inlined = 15, statements flattened = 195 [2022-11-02 21:10:54,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:10:54,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:10:54,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:10:54,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:10:54,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:54" (1/1) ... [2022-11-02 21:10:54,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:54" (1/1) ... [2022-11-02 21:10:54,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:54" (1/1) ... [2022-11-02 21:10:54,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:54" (1/1) ... [2022-11-02 21:10:54,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:54" (1/1) ... [2022-11-02 21:10:54,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:54" (1/1) ... [2022-11-02 21:10:54,882 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:54" (1/1) ... [2022-11-02 21:10:54,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:54" (1/1) ... [2022-11-02 21:10:54,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:10:54,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:10:54,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:10:54,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:10:54,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:54" (1/1) ... [2022-11-02 21:10:54,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:10:54,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:54,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:10:54,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:10:54,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-02 21:10:54,997 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2022-11-02 21:10:54,997 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2022-11-02 21:10:54,997 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-11-02 21:10:54,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-11-02 21:10:54,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-02 21:10:54,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-02 21:10:55,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 21:10:55,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:10:55,002 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2022-11-02 21:10:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2022-11-02 21:10:55,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:10:55,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 21:10:55,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 21:10:55,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-02 21:10:55,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:10:55,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 21:10:55,003 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2022-11-02 21:10:55,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2022-11-02 21:10:55,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-02 21:10:55,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-02 21:10:55,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:10:55,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:10:55,245 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:10:55,260 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:10:56,467 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:10:56,482 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:10:56,486 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 21:10:56,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:56 BoogieIcfgContainer [2022-11-02 21:10:56,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:10:56,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:10:56,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:10:56,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:10:56,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:10:53" (1/3) ... [2022-11-02 21:10:56,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779355a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:10:56, skipping insertion in model container [2022-11-02 21:10:56,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:54" (2/3) ... [2022-11-02 21:10:56,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779355a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:10:56, skipping insertion in model container [2022-11-02 21:10:56,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:56" (3/3) ... [2022-11-02 21:10:56,503 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test23_2.i [2022-11-02 21:10:56,524 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:10:56,525 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 79 error locations. [2022-11-02 21:10:56,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:10:56,624 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@38f12e31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:10:56,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2022-11-02 21:10:56,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 204 states, 110 states have (on average 1.8454545454545455) internal successors, (203), 189 states have internal predecessors, (203), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 21:10:56,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:10:56,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:56,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:56,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:10:56,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:56,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1281397623, now seen corresponding path program 1 times [2022-11-02 21:10:56,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:56,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087491560] [2022-11-02 21:10:56,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:56,662 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:56,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:56,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:56,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:10:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:56,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:10:56,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:56,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-02 21:10:57,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:57,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:10:57,059 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:57,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087491560] [2022-11-02 21:10:57,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087491560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:57,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:57,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:10:57,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905250481] [2022-11-02 21:10:57,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:57,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:10:57,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:57,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:10:57,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:10:57,118 INFO L87 Difference]: Start difference. First operand has 204 states, 110 states have (on average 1.8454545454545455) internal successors, (203), 189 states have internal predecessors, (203), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:10:58,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:58,190 INFO L93 Difference]: Finished difference Result 231 states and 247 transitions. [2022-11-02 21:10:58,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:10:58,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-02 21:10:58,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:58,208 INFO L225 Difference]: With dead ends: 231 [2022-11-02 21:10:58,208 INFO L226 Difference]: Without dead ends: 227 [2022-11-02 21:10:58,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:10:58,219 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 28 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:58,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 839 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 21:10:58,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-02 21:10:58,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 211. [2022-11-02 21:10:58,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 116 states have (on average 1.793103448275862) internal successors, (208), 194 states have internal predecessors, (208), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-02 21:10:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 227 transitions. [2022-11-02 21:10:58,310 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 227 transitions. Word has length 12 [2022-11-02 21:10:58,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:58,311 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 227 transitions. [2022-11-02 21:10:58,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:10:58,311 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 227 transitions. [2022-11-02 21:10:58,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:10:58,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:58,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:58,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:58,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:58,523 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:10:58,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:58,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1281397624, now seen corresponding path program 1 times [2022-11-02 21:10:58,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:58,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510952769] [2022-11-02 21:10:58,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:58,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:58,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:58,526 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:58,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:10:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:58,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:10:58,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:58,697 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 21:10:58,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:58,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:10:58,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:58,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510952769] [2022-11-02 21:10:58,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510952769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:58,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:58,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:10:58,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200213384] [2022-11-02 21:10:58,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:58,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:10:58,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:58,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:10:58,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:10:58,886 INFO L87 Difference]: Start difference. First operand 211 states and 227 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:11:00,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:00,123 INFO L93 Difference]: Finished difference Result 236 states and 251 transitions. [2022-11-02 21:11:00,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:11:00,125 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-02 21:11:00,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:00,126 INFO L225 Difference]: With dead ends: 236 [2022-11-02 21:11:00,127 INFO L226 Difference]: Without dead ends: 236 [2022-11-02 21:11:00,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:11:00,128 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 35 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:00,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1152 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 21:11:00,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-02 21:11:00,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 211. [2022-11-02 21:11:00,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 116 states have (on average 1.7758620689655173) internal successors, (206), 194 states have internal predecessors, (206), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-02 21:11:00,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 225 transitions. [2022-11-02 21:11:00,142 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 225 transitions. Word has length 12 [2022-11-02 21:11:00,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:00,143 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 225 transitions. [2022-11-02 21:11:00,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:11:00,143 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 225 transitions. [2022-11-02 21:11:00,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:11:00,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:00,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:00,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:00,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:00,357 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:00,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:00,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1270759338, now seen corresponding path program 1 times [2022-11-02 21:11:00,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:00,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786632186] [2022-11-02 21:11:00,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:00,360 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:00,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:00,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:00,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:11:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:00,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:11:00,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:00,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:00,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:00,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:00,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786632186] [2022-11-02 21:11:00,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786632186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:00,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:00,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:11:00,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117620834] [2022-11-02 21:11:00,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:00,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:11:00,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:00,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:11:00,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:11:00,524 INFO L87 Difference]: Start difference. First operand 211 states and 225 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:11:00,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:00,570 INFO L93 Difference]: Finished difference Result 223 states and 237 transitions. [2022-11-02 21:11:00,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:11:00,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-02 21:11:00,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:00,572 INFO L225 Difference]: With dead ends: 223 [2022-11-02 21:11:00,572 INFO L226 Difference]: Without dead ends: 223 [2022-11-02 21:11:00,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:11:00,574 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 20 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:00,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 836 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:11:00,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-02 21:11:00,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 202. [2022-11-02 21:11:00,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 112 states have (on average 1.7678571428571428) internal successors, (198), 186 states have internal predecessors, (198), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-02 21:11:00,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 215 transitions. [2022-11-02 21:11:00,585 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 215 transitions. Word has length 12 [2022-11-02 21:11:00,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:00,585 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 215 transitions. [2022-11-02 21:11:00,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:11:00,586 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 215 transitions. [2022-11-02 21:11:00,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:11:00,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:00,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:00,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:00,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:00,810 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:00,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:00,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1281312215, now seen corresponding path program 1 times [2022-11-02 21:11:00,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:00,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692548536] [2022-11-02 21:11:00,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:00,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:00,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:00,813 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:00,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:11:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:00,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:11:00,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:00,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:00,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:00,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:00,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692548536] [2022-11-02 21:11:00,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692548536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:00,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:00,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:11:00,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791011929] [2022-11-02 21:11:00,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:00,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:11:00,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:00,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:11:00,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:11:00,963 INFO L87 Difference]: Start difference. First operand 202 states and 215 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:11:01,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:01,021 INFO L93 Difference]: Finished difference Result 223 states and 236 transitions. [2022-11-02 21:11:01,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:11:01,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-02 21:11:01,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:01,023 INFO L225 Difference]: With dead ends: 223 [2022-11-02 21:11:01,023 INFO L226 Difference]: Without dead ends: 223 [2022-11-02 21:11:01,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:11:01,028 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 127 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:01,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 768 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:11:01,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-02 21:11:01,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 202. [2022-11-02 21:11:01,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 112 states have (on average 1.7589285714285714) internal successors, (197), 186 states have internal predecessors, (197), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-02 21:11:01,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 214 transitions. [2022-11-02 21:11:01,067 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 214 transitions. Word has length 12 [2022-11-02 21:11:01,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:01,067 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 214 transitions. [2022-11-02 21:11:01,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:11:01,067 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 214 transitions. [2022-11-02 21:11:01,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:11:01,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:01,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:01,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:01,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:01,272 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:01,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:01,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1270844746, now seen corresponding path program 1 times [2022-11-02 21:11:01,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:01,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691056866] [2022-11-02 21:11:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:01,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:01,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:01,275 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:01,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:11:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:01,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:11:01,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:01,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:01,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:01,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:01,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691056866] [2022-11-02 21:11:01,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691056866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:01,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:01,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:11:01,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707942335] [2022-11-02 21:11:01,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:01,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:11:01,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:01,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:11:01,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:11:01,399 INFO L87 Difference]: Start difference. First operand 202 states and 214 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:11:01,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:01,466 INFO L93 Difference]: Finished difference Result 207 states and 218 transitions. [2022-11-02 21:11:01,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:11:01,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-02 21:11:01,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:01,468 INFO L225 Difference]: With dead ends: 207 [2022-11-02 21:11:01,469 INFO L226 Difference]: Without dead ends: 207 [2022-11-02 21:11:01,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:11:01,470 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 110 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:01,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 720 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:11:01,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-02 21:11:01,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 204. [2022-11-02 21:11:01,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 114 states have (on average 1.7456140350877194) internal successors, (199), 188 states have internal predecessors, (199), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-02 21:11:01,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 216 transitions. [2022-11-02 21:11:01,482 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 216 transitions. Word has length 12 [2022-11-02 21:11:01,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:01,483 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 216 transitions. [2022-11-02 21:11:01,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:11:01,483 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 216 transitions. [2022-11-02 21:11:01,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:11:01,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:01,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:01,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:01,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:01,698 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:01,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:01,698 INFO L85 PathProgramCache]: Analyzing trace with hash -741461350, now seen corresponding path program 1 times [2022-11-02 21:11:01,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:01,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625730405] [2022-11-02 21:11:01,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:01,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:01,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:01,701 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:01,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:11:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:01,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:11:01,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:01,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:01,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:01,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:01,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625730405] [2022-11-02 21:11:01,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625730405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:01,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:01,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:11:01,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451689066] [2022-11-02 21:11:01,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:01,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:11:01,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:01,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:11:01,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:11:01,842 INFO L87 Difference]: Start difference. First operand 204 states and 216 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:11:02,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:02,366 INFO L93 Difference]: Finished difference Result 216 states and 230 transitions. [2022-11-02 21:11:02,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:11:02,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-02 21:11:02,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:02,369 INFO L225 Difference]: With dead ends: 216 [2022-11-02 21:11:02,369 INFO L226 Difference]: Without dead ends: 208 [2022-11-02 21:11:02,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:11:02,371 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 51 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:02,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 396 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:11:02,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-02 21:11:02,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 198. [2022-11-02 21:11:02,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 109 states have (on average 1.7706422018348624) internal successors, (193), 183 states have internal predecessors, (193), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 21:11:02,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 209 transitions. [2022-11-02 21:11:02,380 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 209 transitions. Word has length 13 [2022-11-02 21:11:02,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:02,380 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 209 transitions. [2022-11-02 21:11:02,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:11:02,381 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 209 transitions. [2022-11-02 21:11:02,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 21:11:02,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:02,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:02,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:02,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:02,606 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:02,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:02,606 INFO L85 PathProgramCache]: Analyzing trace with hash 980413121, now seen corresponding path program 1 times [2022-11-02 21:11:02,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:02,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038953836] [2022-11-02 21:11:02,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:02,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:02,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:02,608 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:02,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:11:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:02,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 21:11:02,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:04,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:04,935 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 21:11:05,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:05,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:05,034 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:05,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038953836] [2022-11-02 21:11:05,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038953836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:05,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:05,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:11:05,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414652885] [2022-11-02 21:11:05,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:05,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:11:05,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:05,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:11:05,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=38, Unknown=1, NotChecked=0, Total=56 [2022-11-02 21:11:05,037 INFO L87 Difference]: Start difference. First operand 198 states and 209 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:11:08,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:08,459 INFO L93 Difference]: Finished difference Result 208 states and 222 transitions. [2022-11-02 21:11:08,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:11:08,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-02 21:11:08,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:08,476 INFO L225 Difference]: With dead ends: 208 [2022-11-02 21:11:08,476 INFO L226 Difference]: Without dead ends: 208 [2022-11-02 21:11:08,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=38, Invalid=92, Unknown=2, NotChecked=0, Total=132 [2022-11-02 21:11:08,477 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 58 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:08,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 576 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 490 Invalid, 0 Unknown, 113 Unchecked, 1.3s Time] [2022-11-02 21:11:08,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-02 21:11:08,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 197. [2022-11-02 21:11:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 109 states have (on average 1.761467889908257) internal successors, (192), 182 states have internal predecessors, (192), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 21:11:08,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 208 transitions. [2022-11-02 21:11:08,485 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 208 transitions. Word has length 16 [2022-11-02 21:11:08,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:08,485 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 208 transitions. [2022-11-02 21:11:08,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:11:08,486 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 208 transitions. [2022-11-02 21:11:08,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 21:11:08,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:08,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:08,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:08,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:08,700 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:08,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:08,700 INFO L85 PathProgramCache]: Analyzing trace with hash 980413120, now seen corresponding path program 1 times [2022-11-02 21:11:08,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:08,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786155733] [2022-11-02 21:11:08,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:08,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:08,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:08,706 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:08,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:11:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:08,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:11:08,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:09,025 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 21:11:09,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 21:11:09,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:09,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:09,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:09,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786155733] [2022-11-02 21:11:09,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786155733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:09,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:09,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:11:09,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184753976] [2022-11-02 21:11:09,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:09,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:11:09,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:09,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:11:09,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:11:09,099 INFO L87 Difference]: Start difference. First operand 197 states and 208 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:11:10,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:10,099 INFO L93 Difference]: Finished difference Result 249 states and 263 transitions. [2022-11-02 21:11:10,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:11:10,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2022-11-02 21:11:10,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:10,102 INFO L225 Difference]: With dead ends: 249 [2022-11-02 21:11:10,103 INFO L226 Difference]: Without dead ends: 249 [2022-11-02 21:11:10,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:11:10,104 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 199 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:10,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 538 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 366 Invalid, 0 Unknown, 114 Unchecked, 0.9s Time] [2022-11-02 21:11:10,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-11-02 21:11:10,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 207. [2022-11-02 21:11:10,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 118 states have (on average 1.7457627118644068) internal successors, (206), 191 states have internal predecessors, (206), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-02 21:11:10,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 224 transitions. [2022-11-02 21:11:10,118 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 224 transitions. Word has length 16 [2022-11-02 21:11:10,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:10,118 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 224 transitions. [2022-11-02 21:11:10,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:11:10,125 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 224 transitions. [2022-11-02 21:11:10,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 21:11:10,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:10,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:10,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:10,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:10,335 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:10,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:10,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1929045948, now seen corresponding path program 1 times [2022-11-02 21:11:10,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:10,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950592707] [2022-11-02 21:11:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:10,337 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:10,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:10,338 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:10,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:11:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:10,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:11:10,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:10,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-02 21:11:10,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:10,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:10,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:10,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950592707] [2022-11-02 21:11:10,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950592707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:10,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:10,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:11:10,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298062350] [2022-11-02 21:11:10,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:10,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:11:10,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:10,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:11:10,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:11:10,542 INFO L87 Difference]: Start difference. First operand 207 states and 224 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:11:11,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:11,511 INFO L93 Difference]: Finished difference Result 262 states and 286 transitions. [2022-11-02 21:11:11,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:11:11,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-11-02 21:11:11,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:11,514 INFO L225 Difference]: With dead ends: 262 [2022-11-02 21:11:11,514 INFO L226 Difference]: Without dead ends: 262 [2022-11-02 21:11:11,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:11:11,515 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 69 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:11,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 643 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 21:11:11,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-11-02 21:11:11,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 234. [2022-11-02 21:11:11,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 147 states have (on average 1.7687074829931972) internal successors, (260), 218 states have internal predecessors, (260), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-02 21:11:11,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 278 transitions. [2022-11-02 21:11:11,540 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 278 transitions. Word has length 25 [2022-11-02 21:11:11,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:11,541 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 278 transitions. [2022-11-02 21:11:11,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:11:11,542 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 278 transitions. [2022-11-02 21:11:11,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 21:11:11,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:11,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:11,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:11,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:11,745 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:11,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:11,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1929045947, now seen corresponding path program 1 times [2022-11-02 21:11:11,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:11,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802302372] [2022-11-02 21:11:11,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:11,747 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:11,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:11,748 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:11,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:11:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:11,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:11:11,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:11,985 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 21:11:12,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:12,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:12,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:12,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802302372] [2022-11-02 21:11:12,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802302372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:12,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:12,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:11:12,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085705901] [2022-11-02 21:11:12,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:12,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:11:12,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:12,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:11:12,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:11:12,120 INFO L87 Difference]: Start difference. First operand 234 states and 278 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:11:13,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:13,242 INFO L93 Difference]: Finished difference Result 294 states and 321 transitions. [2022-11-02 21:11:13,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:11:13,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-11-02 21:11:13,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:13,247 INFO L225 Difference]: With dead ends: 294 [2022-11-02 21:11:13,247 INFO L226 Difference]: Without dead ends: 294 [2022-11-02 21:11:13,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:11:13,248 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 103 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:13,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 641 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 21:11:13,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-11-02 21:11:13,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 236. [2022-11-02 21:11:13,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 150 states have (on average 1.7466666666666666) internal successors, (262), 219 states have internal predecessors, (262), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 21:11:13,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 283 transitions. [2022-11-02 21:11:13,260 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 283 transitions. Word has length 25 [2022-11-02 21:11:13,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:13,260 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 283 transitions. [2022-11-02 21:11:13,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:11:13,261 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 283 transitions. [2022-11-02 21:11:13,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 21:11:13,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:13,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:13,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:13,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:13,477 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:13,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:13,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1612783879, now seen corresponding path program 1 times [2022-11-02 21:11:13,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:13,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597130351] [2022-11-02 21:11:13,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:13,478 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:13,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:13,479 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:13,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:11:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:13,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:11:13,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:13,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:13,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:13,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:13,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597130351] [2022-11-02 21:11:13,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597130351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:13,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:13,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:11:13,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869995139] [2022-11-02 21:11:13,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:13,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:11:13,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:13,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:11:13,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:11:13,664 INFO L87 Difference]: Start difference. First operand 236 states and 283 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:11:13,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:13,800 INFO L93 Difference]: Finished difference Result 236 states and 282 transitions. [2022-11-02 21:11:13,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:11:13,801 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-11-02 21:11:13,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:13,802 INFO L225 Difference]: With dead ends: 236 [2022-11-02 21:11:13,803 INFO L226 Difference]: Without dead ends: 236 [2022-11-02 21:11:13,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:11:13,803 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 118 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:13,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 824 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:11:13,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-02 21:11:13,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-11-02 21:11:13,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 150 states have (on average 1.74) internal successors, (261), 219 states have internal predecessors, (261), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 21:11:13,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 282 transitions. [2022-11-02 21:11:13,813 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 282 transitions. Word has length 27 [2022-11-02 21:11:13,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:13,813 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 282 transitions. [2022-11-02 21:11:13,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:11:13,814 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 282 transitions. [2022-11-02 21:11:13,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 21:11:13,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:13,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:13,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-02 21:11:14,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:14,028 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:14,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:14,028 INFO L85 PathProgramCache]: Analyzing trace with hash -405984592, now seen corresponding path program 1 times [2022-11-02 21:11:14,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:14,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862255207] [2022-11-02 21:11:14,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:14,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:14,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:14,030 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:14,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:11:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:14,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:11:14,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:14,297 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-02 21:11:14,363 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 21:11:14,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 21:11:14,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:14,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:14,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:14,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862255207] [2022-11-02 21:11:14,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862255207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:14,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:14,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:11:14,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735923153] [2022-11-02 21:11:14,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:14,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:11:14,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:14,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:11:14,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:11:14,441 INFO L87 Difference]: Start difference. First operand 236 states and 282 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 21:11:15,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:15,705 INFO L93 Difference]: Finished difference Result 248 states and 290 transitions. [2022-11-02 21:11:15,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:11:15,727 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-11-02 21:11:15,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:15,728 INFO L225 Difference]: With dead ends: 248 [2022-11-02 21:11:15,729 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 21:11:15,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:11:15,729 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 197 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:15,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 542 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 21:11:15,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 21:11:15,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 231. [2022-11-02 21:11:15,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 150 states have (on average 1.6733333333333333) internal successors, (251), 214 states have internal predecessors, (251), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 21:11:15,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 272 transitions. [2022-11-02 21:11:15,746 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 272 transitions. Word has length 33 [2022-11-02 21:11:15,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:15,747 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 272 transitions. [2022-11-02 21:11:15,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 21:11:15,747 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 272 transitions. [2022-11-02 21:11:15,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 21:11:15,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:15,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:15,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:15,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:15,965 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:15,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:15,965 INFO L85 PathProgramCache]: Analyzing trace with hash -405984591, now seen corresponding path program 1 times [2022-11-02 21:11:15,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:15,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982615408] [2022-11-02 21:11:15,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:15,966 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:15,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:15,967 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:15,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 21:11:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:16,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:11:16,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:16,197 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-02 21:11:16,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 21:11:16,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:16,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 21:11:16,372 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 21:11:16,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-02 21:11:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:16,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:16,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:16,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982615408] [2022-11-02 21:11:16,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [982615408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:16,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:16,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:11:16,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421564016] [2022-11-02 21:11:16,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:16,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:11:16,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:16,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:11:16,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:11:16,508 INFO L87 Difference]: Start difference. First operand 231 states and 272 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 21:11:18,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:18,044 INFO L93 Difference]: Finished difference Result 308 states and 337 transitions. [2022-11-02 21:11:18,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:11:18,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-11-02 21:11:18,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:18,047 INFO L225 Difference]: With dead ends: 308 [2022-11-02 21:11:18,047 INFO L226 Difference]: Without dead ends: 308 [2022-11-02 21:11:18,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:11:18,048 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 208 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:18,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 548 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 502 Invalid, 0 Unknown, 150 Unchecked, 1.5s Time] [2022-11-02 21:11:18,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-02 21:11:18,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 231. [2022-11-02 21:11:18,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 150 states have (on average 1.64) internal successors, (246), 214 states have internal predecessors, (246), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 21:11:18,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 267 transitions. [2022-11-02 21:11:18,059 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 267 transitions. Word has length 33 [2022-11-02 21:11:18,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:18,060 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 267 transitions. [2022-11-02 21:11:18,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 21:11:18,060 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 267 transitions. [2022-11-02 21:11:18,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 21:11:18,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:18,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:18,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-11-02 21:11:18,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:18,277 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:18,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:18,278 INFO L85 PathProgramCache]: Analyzing trace with hash -60324907, now seen corresponding path program 1 times [2022-11-02 21:11:18,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:18,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978151186] [2022-11-02 21:11:18,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:18,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:18,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:18,281 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:18,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:11:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:18,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:11:18,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:19,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:19,068 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:19,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978151186] [2022-11-02 21:11:19,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978151186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:19,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:19,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:11:19,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014794902] [2022-11-02 21:11:19,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:19,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:11:19,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:19,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:11:19,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:11:19,070 INFO L87 Difference]: Start difference. First operand 231 states and 267 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 21:11:19,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:19,113 INFO L93 Difference]: Finished difference Result 315 states and 355 transitions. [2022-11-02 21:11:19,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:11:19,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-11-02 21:11:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:19,115 INFO L225 Difference]: With dead ends: 315 [2022-11-02 21:11:19,115 INFO L226 Difference]: Without dead ends: 315 [2022-11-02 21:11:19,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:11:19,116 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 142 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:19,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 553 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 37 Unchecked, 0.0s Time] [2022-11-02 21:11:19,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-02 21:11:19,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 248. [2022-11-02 21:11:19,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 166 states have (on average 1.5903614457831325) internal successors, (264), 230 states have internal predecessors, (264), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 21:11:19,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 285 transitions. [2022-11-02 21:11:19,132 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 285 transitions. Word has length 36 [2022-11-02 21:11:19,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:19,132 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 285 transitions. [2022-11-02 21:11:19,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 21:11:19,133 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 285 transitions. [2022-11-02 21:11:19,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 21:11:19,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:19,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:19,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:19,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:19,350 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONARRAY_INDEX === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:19,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:19,351 INFO L85 PathProgramCache]: Analyzing trace with hash -60324935, now seen corresponding path program 1 times [2022-11-02 21:11:19,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:19,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288708507] [2022-11-02 21:11:19,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:19,351 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:19,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:19,352 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:19,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:11:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:19,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:11:19,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:19,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:19,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:19,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288708507] [2022-11-02 21:11:19,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288708507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:19,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:19,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:11:19,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598205101] [2022-11-02 21:11:19,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:19,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:11:19,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:19,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:11:19,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:11:19,562 INFO L87 Difference]: Start difference. First operand 248 states and 285 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:11:19,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:19,599 INFO L93 Difference]: Finished difference Result 294 states and 335 transitions. [2022-11-02 21:11:19,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:11:19,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-11-02 21:11:19,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:19,601 INFO L225 Difference]: With dead ends: 294 [2022-11-02 21:11:19,602 INFO L226 Difference]: Without dead ends: 294 [2022-11-02 21:11:19,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:11:19,603 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 36 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:19,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 583 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:11:19,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-11-02 21:11:19,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 254. [2022-11-02 21:11:19,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 172 states have (on average 1.569767441860465) internal successors, (270), 236 states have internal predecessors, (270), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 21:11:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 291 transitions. [2022-11-02 21:11:19,613 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 291 transitions. Word has length 36 [2022-11-02 21:11:19,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:19,614 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 291 transitions. [2022-11-02 21:11:19,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:11:19,614 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 291 transitions. [2022-11-02 21:11:19,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 21:11:19,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:19,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:19,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:19,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:19,833 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:19,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:19,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1290023480, now seen corresponding path program 1 times [2022-11-02 21:11:19,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:19,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379041105] [2022-11-02 21:11:19,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:19,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:19,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:19,836 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:19,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 21:11:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:20,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:11:20,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:20,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:20,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:20,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:20,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379041105] [2022-11-02 21:11:20,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379041105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:20,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:20,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:11:20,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844032724] [2022-11-02 21:11:20,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:20,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:11:20,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:20,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:11:20,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:11:20,061 INFO L87 Difference]: Start difference. First operand 254 states and 291 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:11:20,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:20,100 INFO L93 Difference]: Finished difference Result 277 states and 316 transitions. [2022-11-02 21:11:20,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:11:20,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-02 21:11:20,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:20,104 INFO L225 Difference]: With dead ends: 277 [2022-11-02 21:11:20,105 INFO L226 Difference]: Without dead ends: 277 [2022-11-02 21:11:20,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:11:20,106 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 43 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:20,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 581 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:11:20,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-02 21:11:20,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 256. [2022-11-02 21:11:20,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 174 states have (on average 1.5632183908045978) internal successors, (272), 238 states have internal predecessors, (272), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 21:11:20,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 293 transitions. [2022-11-02 21:11:20,116 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 293 transitions. Word has length 40 [2022-11-02 21:11:20,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:20,118 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 293 transitions. [2022-11-02 21:11:20,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:11:20,118 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 293 transitions. [2022-11-02 21:11:20,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 21:11:20,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:20,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:20,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:20,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:20,335 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:20,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:20,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1533058511, now seen corresponding path program 1 times [2022-11-02 21:11:20,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:20,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521394173] [2022-11-02 21:11:20,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:20,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:20,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:20,339 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:20,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 21:11:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:20,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 21:11:20,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:20,765 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 21:11:20,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-02 21:11:21,136 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 21:11:21,136 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-02 21:11:21,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-02 21:11:21,436 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 21:11:21,437 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 21:11:22,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:22,139 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 21:11:22,139 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 31 [2022-11-02 21:11:22,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:22,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:22,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:22,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521394173] [2022-11-02 21:11:22,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521394173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:22,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:22,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-02 21:11:22,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135478617] [2022-11-02 21:11:22,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:22,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:11:22,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:22,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:11:22,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:11:22,258 INFO L87 Difference]: Start difference. First operand 256 states and 293 transitions. Second operand has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:11:23,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:23,034 INFO L93 Difference]: Finished difference Result 268 states and 308 transitions. [2022-11-02 21:11:23,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 21:11:23,035 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-11-02 21:11:23,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:23,037 INFO L225 Difference]: With dead ends: 268 [2022-11-02 21:11:23,037 INFO L226 Difference]: Without dead ends: 268 [2022-11-02 21:11:23,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:11:23,038 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 19 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 526 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:23,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1553 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 277 Invalid, 0 Unknown, 526 Unchecked, 0.7s Time] [2022-11-02 21:11:23,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-02 21:11:23,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 264. [2022-11-02 21:11:23,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 182 states have (on average 1.5494505494505495) internal successors, (282), 246 states have internal predecessors, (282), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 21:11:23,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 303 transitions. [2022-11-02 21:11:23,047 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 303 transitions. Word has length 42 [2022-11-02 21:11:23,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:23,047 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 303 transitions. [2022-11-02 21:11:23,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:11:23,048 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 303 transitions. [2022-11-02 21:11:23,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 21:11:23,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:23,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:23,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:23,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:23,265 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:23,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:23,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1533058512, now seen corresponding path program 1 times [2022-11-02 21:11:23,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:23,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605060650] [2022-11-02 21:11:23,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:23,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:23,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:23,268 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:23,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 21:11:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:23,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-02 21:11:23,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:23,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:23,736 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 21:11:23,767 INFO L356 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-02 21:11:23,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-02 21:11:24,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:24,121 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 21:11:24,352 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 21:11:24,353 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 21:11:24,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:24,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:24,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:24,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605060650] [2022-11-02 21:11:24,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605060650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:24,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:24,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:11:24,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130161903] [2022-11-02 21:11:24,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:24,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:11:24,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:24,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:11:24,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:11:24,667 INFO L87 Difference]: Start difference. First operand 264 states and 303 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:11:26,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:26,591 INFO L93 Difference]: Finished difference Result 272 states and 310 transitions. [2022-11-02 21:11:26,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:11:26,592 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-11-02 21:11:26,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:26,594 INFO L225 Difference]: With dead ends: 272 [2022-11-02 21:11:26,594 INFO L226 Difference]: Without dead ends: 272 [2022-11-02 21:11:26,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:11:26,596 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 293 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 276 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:26,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 730 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 670 Invalid, 0 Unknown, 276 Unchecked, 1.7s Time] [2022-11-02 21:11:26,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-02 21:11:26,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 262. [2022-11-02 21:11:26,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 182 states have (on average 1.532967032967033) internal successors, (279), 244 states have internal predecessors, (279), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 21:11:26,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 300 transitions. [2022-11-02 21:11:26,605 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 300 transitions. Word has length 42 [2022-11-02 21:11:26,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:26,605 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 300 transitions. [2022-11-02 21:11:26,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:11:26,606 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 300 transitions. [2022-11-02 21:11:26,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 21:11:26,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:26,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:26,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:26,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:26,822 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONARRAY_INDEX === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:26,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:26,823 INFO L85 PathProgramCache]: Analyzing trace with hash -974113632, now seen corresponding path program 1 times [2022-11-02 21:11:26,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:26,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356299038] [2022-11-02 21:11:26,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:26,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:26,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:26,825 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:26,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 21:11:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:27,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 21:11:27,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:27,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:27,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:27,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:27,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 36 [2022-11-02 21:11:27,325 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 50 [2022-11-02 21:11:27,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 50 [2022-11-02 21:11:27,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 50 [2022-11-02 21:11:27,451 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:11:27,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 14 [2022-11-02 21:11:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:27,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:27,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:27,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356299038] [2022-11-02 21:11:27,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356299038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:27,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:27,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:11:27,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794504130] [2022-11-02 21:11:27,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:27,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:11:27,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:27,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:11:27,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:11:27,486 INFO L87 Difference]: Start difference. First operand 262 states and 300 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:11:27,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:27,883 INFO L93 Difference]: Finished difference Result 270 states and 308 transitions. [2022-11-02 21:11:27,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:11:27,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-11-02 21:11:27,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:27,886 INFO L225 Difference]: With dead ends: 270 [2022-11-02 21:11:27,886 INFO L226 Difference]: Without dead ends: 270 [2022-11-02 21:11:27,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:11:27,887 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 28 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:27,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 863 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 15 Unchecked, 0.4s Time] [2022-11-02 21:11:27,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-02 21:11:27,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 261. [2022-11-02 21:11:27,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 182 states have (on average 1.521978021978022) internal successors, (277), 243 states have internal predecessors, (277), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 21:11:27,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 298 transitions. [2022-11-02 21:11:27,896 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 298 transitions. Word has length 43 [2022-11-02 21:11:27,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:27,897 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 298 transitions. [2022-11-02 21:11:27,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:11:27,897 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 298 transitions. [2022-11-02 21:11:27,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 21:11:27,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:27,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:27,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-11-02 21:11:28,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:28,114 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:28,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:28,115 INFO L85 PathProgramCache]: Analyzing trace with hash 280193697, now seen corresponding path program 1 times [2022-11-02 21:11:28,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:28,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794346477] [2022-11-02 21:11:28,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:28,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:28,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:28,117 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:28,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 21:11:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:28,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:11:28,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:28,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:28,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:28,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:28,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794346477] [2022-11-02 21:11:28,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794346477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:28,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:28,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:11:28,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485996218] [2022-11-02 21:11:28,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:28,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:11:28,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:28,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:11:28,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:11:28,342 INFO L87 Difference]: Start difference. First operand 261 states and 298 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:11:28,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:28,373 INFO L93 Difference]: Finished difference Result 283 states and 319 transitions. [2022-11-02 21:11:28,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:11:28,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-11-02 21:11:28,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:28,377 INFO L225 Difference]: With dead ends: 283 [2022-11-02 21:11:28,377 INFO L226 Difference]: Without dead ends: 283 [2022-11-02 21:11:28,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:11:28,379 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 48 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:28,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 561 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:11:28,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-11-02 21:11:28,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 263. [2022-11-02 21:11:28,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 184 states have (on average 1.5108695652173914) internal successors, (278), 245 states have internal predecessors, (278), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 21:11:28,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 299 transitions. [2022-11-02 21:11:28,397 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 299 transitions. Word has length 43 [2022-11-02 21:11:28,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:28,398 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 299 transitions. [2022-11-02 21:11:28,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:11:28,399 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 299 transitions. [2022-11-02 21:11:28,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-02 21:11:28,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:28,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:28,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:28,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:28,616 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:28,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:28,618 INFO L85 PathProgramCache]: Analyzing trace with hash -132751331, now seen corresponding path program 1 times [2022-11-02 21:11:28,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:28,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158573550] [2022-11-02 21:11:28,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:28,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:28,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:28,620 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:28,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 21:11:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:28,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:11:28,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:28,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-02 21:11:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:29,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:29,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:29,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158573550] [2022-11-02 21:11:29,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158573550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:29,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:29,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:11:29,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598430858] [2022-11-02 21:11:29,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:29,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:11:29,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:29,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:11:29,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:11:29,034 INFO L87 Difference]: Start difference. First operand 263 states and 299 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:11:30,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:30,214 INFO L93 Difference]: Finished difference Result 311 states and 340 transitions. [2022-11-02 21:11:30,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:11:30,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-11-02 21:11:30,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:30,216 INFO L225 Difference]: With dead ends: 311 [2022-11-02 21:11:30,217 INFO L226 Difference]: Without dead ends: 311 [2022-11-02 21:11:30,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:11:30,217 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 126 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:30,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 818 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 21:11:30,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-02 21:11:30,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 262. [2022-11-02 21:11:30,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 184 states have (on average 1.4945652173913044) internal successors, (275), 244 states have internal predecessors, (275), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 21:11:30,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 296 transitions. [2022-11-02 21:11:30,229 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 296 transitions. Word has length 44 [2022-11-02 21:11:30,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:30,231 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 296 transitions. [2022-11-02 21:11:30,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:11:30,231 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 296 transitions. [2022-11-02 21:11:30,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-02 21:11:30,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:30,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:30,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:30,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:30,446 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:30,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:30,446 INFO L85 PathProgramCache]: Analyzing trace with hash -132751330, now seen corresponding path program 1 times [2022-11-02 21:11:30,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:30,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84383606] [2022-11-02 21:11:30,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:30,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:30,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:30,448 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:30,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 21:11:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:30,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 21:11:30,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:30,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 21:11:30,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:30,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:30,975 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:30,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84383606] [2022-11-02 21:11:30,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84383606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:30,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:30,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:11:30,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51134807] [2022-11-02 21:11:30,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:30,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:11:30,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:30,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:11:30,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:11:30,977 INFO L87 Difference]: Start difference. First operand 262 states and 296 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:11:32,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:32,468 INFO L93 Difference]: Finished difference Result 331 states and 359 transitions. [2022-11-02 21:11:32,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:11:32,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-11-02 21:11:32,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:32,471 INFO L225 Difference]: With dead ends: 331 [2022-11-02 21:11:32,471 INFO L226 Difference]: Without dead ends: 331 [2022-11-02 21:11:32,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:11:32,472 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 142 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:32,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 840 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 21:11:32,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-02 21:11:32,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 262. [2022-11-02 21:11:32,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 184 states have (on average 1.483695652173913) internal successors, (273), 244 states have internal predecessors, (273), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 21:11:32,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 294 transitions. [2022-11-02 21:11:32,481 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 294 transitions. Word has length 44 [2022-11-02 21:11:32,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:32,482 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 294 transitions. [2022-11-02 21:11:32,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:11:32,482 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 294 transitions. [2022-11-02 21:11:32,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-02 21:11:32,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:32,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:32,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:32,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:32,699 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:32,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:32,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1335876523, now seen corresponding path program 1 times [2022-11-02 21:11:32,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:32,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861868860] [2022-11-02 21:11:32,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:32,700 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:32,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:32,701 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:32,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 21:11:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:32,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-02 21:11:32,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:33,092 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 21:11:33,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 21:11:33,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:11:33,379 INFO L356 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-02 21:11:33,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-02 21:11:33,466 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-02 21:11:33,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-11-02 21:11:33,952 INFO L356 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-02 21:11:33,953 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-02 21:11:34,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-11-02 21:11:34,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-11-02 21:11:35,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,326 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-02 21:11:35,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 43 [2022-11-02 21:11:35,561 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-02 21:11:35,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:35,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:35,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:35,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861868860] [2022-11-02 21:11:35,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861868860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:35,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:35,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-02 21:11:35,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135059465] [2022-11-02 21:11:35,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:35,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:11:35,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:35,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:11:35,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:11:35,723 INFO L87 Difference]: Start difference. First operand 262 states and 294 transitions. Second operand has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:11:37,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:37,786 INFO L93 Difference]: Finished difference Result 307 states and 341 transitions. [2022-11-02 21:11:37,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 21:11:37,787 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-02 21:11:37,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:37,789 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:11:37,789 INFO L226 Difference]: Without dead ends: 307 [2022-11-02 21:11:37,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2022-11-02 21:11:37,790 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 131 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 468 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:37,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1243 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 775 Invalid, 0 Unknown, 468 Unchecked, 1.4s Time] [2022-11-02 21:11:37,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-02 21:11:37,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 271. [2022-11-02 21:11:37,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 191 states have (on average 1.486910994764398) internal successors, (284), 252 states have internal predecessors, (284), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-02 21:11:37,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 308 transitions. [2022-11-02 21:11:37,799 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 308 transitions. Word has length 45 [2022-11-02 21:11:37,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:37,799 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 308 transitions. [2022-11-02 21:11:37,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:11:37,800 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 308 transitions. [2022-11-02 21:11:37,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-02 21:11:37,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:37,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:37,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:38,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:38,016 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:38,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:38,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1335876522, now seen corresponding path program 1 times [2022-11-02 21:11:38,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:38,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406858064] [2022-11-02 21:11:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:38,017 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:38,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:38,018 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:38,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 21:11:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:38,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-02 21:11:38,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:38,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 21:11:38,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-02 21:11:38,831 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:11:38,842 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:11:38,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:38,934 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 21:11:38,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:38,977 INFO L356 Elim1Store]: treesize reduction 36, result has 25.0 percent of original size [2022-11-02 21:11:38,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 43 [2022-11-02 21:11:39,118 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-02 21:11:39,118 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-11-02 21:11:39,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-02 21:11:39,707 INFO L356 Elim1Store]: treesize reduction 26, result has 33.3 percent of original size [2022-11-02 21:11:39,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 26 [2022-11-02 21:11:39,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 21:11:40,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 21:11:40,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-02 21:11:40,347 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 21:11:40,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-02 21:11:41,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 21:11:41,097 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-02 21:11:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:41,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:41,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:41,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406858064] [2022-11-02 21:11:41,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406858064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:41,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:41,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:11:41,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032725400] [2022-11-02 21:11:41,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:41,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 21:11:41,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:41,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 21:11:41,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:11:41,445 INFO L87 Difference]: Start difference. First operand 271 states and 308 transitions. Second operand has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:11:42,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:42,449 INFO L93 Difference]: Finished difference Result 272 states and 308 transitions. [2022-11-02 21:11:42,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:11:42,450 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-02 21:11:42,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:42,451 INFO L225 Difference]: With dead ends: 272 [2022-11-02 21:11:42,451 INFO L226 Difference]: Without dead ends: 272 [2022-11-02 21:11:42,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:11:42,452 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 31 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 339 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:42,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1177 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 311 Invalid, 0 Unknown, 339 Unchecked, 0.9s Time] [2022-11-02 21:11:42,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-02 21:11:42,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 271. [2022-11-02 21:11:42,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 191 states have (on average 1.4816753926701571) internal successors, (283), 252 states have internal predecessors, (283), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-02 21:11:42,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 307 transitions. [2022-11-02 21:11:42,460 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 307 transitions. Word has length 45 [2022-11-02 21:11:42,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:42,460 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 307 transitions. [2022-11-02 21:11:42,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:11:42,460 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 307 transitions. [2022-11-02 21:11:42,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 21:11:42,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:42,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:42,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:42,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:42,675 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:42,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:42,676 INFO L85 PathProgramCache]: Analyzing trace with hash 417882070, now seen corresponding path program 1 times [2022-11-02 21:11:42,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:42,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545349716] [2022-11-02 21:11:42,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:42,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:42,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:42,677 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:42,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 21:11:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:42,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-02 21:11:42,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:43,180 INFO L356 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-02 21:11:43,180 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 41 [2022-11-02 21:11:43,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:11:43,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 21:11:44,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-02 21:11:44,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:11:44,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,316 INFO L356 Elim1Store]: treesize reduction 36, result has 25.0 percent of original size [2022-11-02 21:11:44,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2022-11-02 21:11:44,557 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:11:44,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 36 [2022-11-02 21:11:45,194 INFO L356 Elim1Store]: treesize reduction 22, result has 55.1 percent of original size [2022-11-02 21:11:45,194 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2022-11-02 21:11:45,678 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 21:11:45,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 45 [2022-11-02 21:11:45,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 21:11:45,915 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 21:11:45,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 45 [2022-11-02 21:11:45,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 21:11:46,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 21:11:47,400 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:11:47,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 28 [2022-11-02 21:11:47,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:47,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:47,748 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:47,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545349716] [2022-11-02 21:11:47,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545349716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:47,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:47,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-02 21:11:47,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246724534] [2022-11-02 21:11:47,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:47,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-02 21:11:47,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:47,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-02 21:11:47,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-11-02 21:11:47,750 INFO L87 Difference]: Start difference. First operand 271 states and 307 transitions. Second operand has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:11:49,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:49,763 INFO L93 Difference]: Finished difference Result 271 states and 306 transitions. [2022-11-02 21:11:49,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 21:11:49,767 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-02 21:11:49,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:49,768 INFO L225 Difference]: With dead ends: 271 [2022-11-02 21:11:49,768 INFO L226 Difference]: Without dead ends: 271 [2022-11-02 21:11:49,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=118, Invalid=1072, Unknown=0, NotChecked=0, Total=1190 [2022-11-02 21:11:49,770 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 16 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 417 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:49,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1652 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 279 Invalid, 0 Unknown, 417 Unchecked, 0.8s Time] [2022-11-02 21:11:49,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-02 21:11:49,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2022-11-02 21:11:49,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 191 states have (on average 1.4764397905759161) internal successors, (282), 252 states have internal predecessors, (282), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-02 21:11:49,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 306 transitions. [2022-11-02 21:11:49,778 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 306 transitions. Word has length 47 [2022-11-02 21:11:49,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:49,779 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 306 transitions. [2022-11-02 21:11:49,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:11:49,779 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 306 transitions. [2022-11-02 21:11:49,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 21:11:49,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:49,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:49,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:49,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:49,994 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:49,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:49,995 INFO L85 PathProgramCache]: Analyzing trace with hash 417882071, now seen corresponding path program 1 times [2022-11-02 21:11:49,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:49,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279554560] [2022-11-02 21:11:49,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:49,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:49,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:49,996 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:49,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 21:11:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:50,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-02 21:11:50,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:50,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 21:11:50,569 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 21:11:50,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 21:11:50,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:11:50,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:11:51,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 21:11:51,106 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 21:11:51,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-02 21:11:51,610 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-02 21:11:51,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:51,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 21:11:51,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:51,873 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 21:11:51,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 43 [2022-11-02 21:11:52,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-02 21:11:52,101 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-02 21:11:52,852 INFO L356 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-02 21:11:52,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-02 21:11:52,925 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-02 21:11:52,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-02 21:11:53,788 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 21:11:53,789 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 61 [2022-11-02 21:11:53,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-02 21:11:55,341 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 21:11:55,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 61 [2022-11-02 21:11:55,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-02 21:11:57,210 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-02 21:11:57,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 31 [2022-11-02 21:11:57,229 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:11:57,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 26 [2022-11-02 21:11:57,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:57,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:57,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:57,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279554560] [2022-11-02 21:11:57,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279554560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:57,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:57,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-02 21:11:57,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557917361] [2022-11-02 21:11:57,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:57,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-02 21:11:57,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:57,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-02 21:11:57,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:11:57,620 INFO L87 Difference]: Start difference. First operand 271 states and 306 transitions. Second operand has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:11:58,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:58,210 INFO L93 Difference]: Finished difference Result 271 states and 305 transitions. [2022-11-02 21:11:58,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 21:11:58,211 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-02 21:11:58,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:58,213 INFO L225 Difference]: With dead ends: 271 [2022-11-02 21:11:58,213 INFO L226 Difference]: Without dead ends: 271 [2022-11-02 21:11:58,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:11:58,214 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 8 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1045 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:58,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1743 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 1045 Unchecked, 0.6s Time] [2022-11-02 21:11:58,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-02 21:11:58,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2022-11-02 21:11:58,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 191 states have (on average 1.4712041884816753) internal successors, (281), 252 states have internal predecessors, (281), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-02 21:11:58,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 305 transitions. [2022-11-02 21:11:58,223 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 305 transitions. Word has length 47 [2022-11-02 21:11:58,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:58,223 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 305 transitions. [2022-11-02 21:11:58,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:11:58,224 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 305 transitions. [2022-11-02 21:11:58,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 21:11:58,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:58,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:58,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:58,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:58,442 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:11:58,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:58,442 INFO L85 PathProgramCache]: Analyzing trace with hash 870106982, now seen corresponding path program 1 times [2022-11-02 21:11:58,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:58,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507580506] [2022-11-02 21:11:58,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:58,443 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:58,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:58,444 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:58,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 21:11:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:58,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-02 21:11:58,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:59,084 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 21:11:59,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 37 [2022-11-02 21:11:59,470 INFO L356 Elim1Store]: treesize reduction 44, result has 37.1 percent of original size [2022-11-02 21:11:59,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 46 [2022-11-02 21:11:59,798 INFO L356 Elim1Store]: treesize reduction 118, result has 27.6 percent of original size [2022-11-02 21:11:59,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 38 treesize of output 73 [2022-11-02 21:12:00,229 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:12:00,626 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 21:12:01,030 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 21:12:01,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 21:12:01,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 21:12:01,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 21:12:02,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 21:12:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:02,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:02,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:02,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507580506] [2022-11-02 21:12:02,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507580506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:02,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:02,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 21:12:02,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145618575] [2022-11-02 21:12:02,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:02,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:12:02,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:02,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:12:02,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:12:02,754 INFO L87 Difference]: Start difference. First operand 271 states and 305 transitions. Second operand has 20 states, 17 states have (on average 2.411764705882353) internal successors, (41), 18 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:12:03,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:03,709 INFO L93 Difference]: Finished difference Result 284 states and 320 transitions. [2022-11-02 21:12:03,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:12:03,709 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.411764705882353) internal successors, (41), 18 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-02 21:12:03,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:03,711 INFO L225 Difference]: With dead ends: 284 [2022-11-02 21:12:03,711 INFO L226 Difference]: Without dead ends: 284 [2022-11-02 21:12:03,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:12:03,712 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 70 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 809 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:03,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1462 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 371 Invalid, 0 Unknown, 809 Unchecked, 0.7s Time] [2022-11-02 21:12:03,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-02 21:12:03,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 277. [2022-11-02 21:12:03,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 197 states have (on average 1.4619289340101522) internal successors, (288), 258 states have internal predecessors, (288), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-02 21:12:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 312 transitions. [2022-11-02 21:12:03,727 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 312 transitions. Word has length 47 [2022-11-02 21:12:03,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:03,728 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 312 transitions. [2022-11-02 21:12:03,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.411764705882353) internal successors, (41), 18 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:12:03,728 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 312 transitions. [2022-11-02 21:12:03,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 21:12:03,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:03,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:03,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:03,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:03,946 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:12:03,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:03,947 INFO L85 PathProgramCache]: Analyzing trace with hash 870106983, now seen corresponding path program 1 times [2022-11-02 21:12:03,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:03,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689003978] [2022-11-02 21:12:03,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:03,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:03,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:03,949 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:03,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 21:12:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:04,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-02 21:12:04,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:04,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 21:12:04,572 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 21:12:04,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 21:12:04,776 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 21:12:04,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 21:12:04,814 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 21:12:04,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 21:12:04,909 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-02 21:12:04,910 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 21:12:04,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-02 21:12:05,170 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 21:12:05,171 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-11-02 21:12:05,252 INFO L356 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-02 21:12:05,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-02 21:12:05,635 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:12:05,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:12:05,957 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 21:12:05,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 21:12:06,298 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 21:12:06,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 21:12:06,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 21:12:06,369 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 21:12:06,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 21:12:06,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 21:12:06,592 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 21:12:06,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 21:12:06,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 21:12:06,668 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 21:12:06,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 21:12:06,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 21:12:06,892 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 21:12:06,892 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 21:12:06,899 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 21:12:06,939 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 21:12:06,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 21:12:06,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 21:12:07,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:07,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 21:12:07,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:07,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 21:12:07,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 21:12:07,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 21:12:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:08,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:08,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:08,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689003978] [2022-11-02 21:12:08,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689003978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:08,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:08,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:12:08,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055224176] [2022-11-02 21:12:08,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:08,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 21:12:08,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:08,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 21:12:08,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:12:08,072 INFO L87 Difference]: Start difference. First operand 277 states and 312 transitions. Second operand has 22 states, 20 states have (on average 2.05) internal successors, (41), 18 states have internal predecessors, (41), 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) [2022-11-02 21:12:10,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:10,456 INFO L93 Difference]: Finished difference Result 284 states and 319 transitions. [2022-11-02 21:12:10,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 21:12:10,457 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.05) internal successors, (41), 18 states have internal predecessors, (41), 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) Word has length 47 [2022-11-02 21:12:10,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:10,458 INFO L225 Difference]: With dead ends: 284 [2022-11-02 21:12:10,458 INFO L226 Difference]: Without dead ends: 284 [2022-11-02 21:12:10,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-11-02 21:12:10,460 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 86 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 626 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:10,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 1243 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 651 Invalid, 0 Unknown, 626 Unchecked, 1.4s Time] [2022-11-02 21:12:10,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-02 21:12:10,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 277. [2022-11-02 21:12:10,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 197 states have (on average 1.4568527918781726) internal successors, (287), 258 states have internal predecessors, (287), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-02 21:12:10,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 311 transitions. [2022-11-02 21:12:10,468 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 311 transitions. Word has length 47 [2022-11-02 21:12:10,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:10,468 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 311 transitions. [2022-11-02 21:12:10,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.05) internal successors, (41), 18 states have internal predecessors, (41), 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) [2022-11-02 21:12:10,469 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 311 transitions. [2022-11-02 21:12:10,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-02 21:12:10,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:10,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:10,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-02 21:12:10,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:10,689 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:12:10,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:10,690 INFO L85 PathProgramCache]: Analyzing trace with hash -479935114, now seen corresponding path program 1 times [2022-11-02 21:12:10,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:10,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909596647] [2022-11-02 21:12:10,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:10,690 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:10,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:10,692 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:10,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 21:12:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:10,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:12:10,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:10,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:10,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:10,998 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:10,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909596647] [2022-11-02 21:12:10,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909596647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:10,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:10,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:10,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023137057] [2022-11-02 21:12:10,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:10,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:10,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:11,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:11,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:11,001 INFO L87 Difference]: Start difference. First operand 277 states and 311 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:12:11,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:11,032 INFO L93 Difference]: Finished difference Result 294 states and 326 transitions. [2022-11-02 21:12:11,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:12:11,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2022-11-02 21:12:11,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:11,034 INFO L225 Difference]: With dead ends: 294 [2022-11-02 21:12:11,034 INFO L226 Difference]: Without dead ends: 294 [2022-11-02 21:12:11,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:11,035 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 77 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:11,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 554 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:12:11,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-11-02 21:12:11,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 275. [2022-11-02 21:12:11,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 195 states have (on average 1.4461538461538461) internal successors, (282), 256 states have internal predecessors, (282), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-02 21:12:11,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 306 transitions. [2022-11-02 21:12:11,043 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 306 transitions. Word has length 49 [2022-11-02 21:12:11,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:11,043 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 306 transitions. [2022-11-02 21:12:11,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:12:11,044 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 306 transitions. [2022-11-02 21:12:11,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-02 21:12:11,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:11,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:11,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-02 21:12:11,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:11,259 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:12:11,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:11,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1345808633, now seen corresponding path program 1 times [2022-11-02 21:12:11,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:11,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262274304] [2022-11-02 21:12:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:11,260 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:11,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:11,261 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:11,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 21:12:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:11,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-02 21:12:11,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:12,152 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 21:12:12,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 37 [2022-11-02 21:12:12,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:12:12,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:12,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:12,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:12,700 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-02 21:12:12,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 49 [2022-11-02 21:12:12,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:12,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:12,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:12,865 INFO L356 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-02 21:12:12,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27 [2022-11-02 21:12:13,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:13,329 INFO L356 Elim1Store]: treesize reduction 134, result has 28.3 percent of original size [2022-11-02 21:12:13,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 42 treesize of output 81 [2022-11-02 21:12:13,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:12:13,980 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 21:12:13,980 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 37 [2022-11-02 21:12:14,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:14,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:14,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:14,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:14,774 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 21:12:14,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 105 [2022-11-02 21:12:14,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:14,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:14,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:14,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:14,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 21:12:17,210 INFO L356 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-02 21:12:17,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 80 [2022-11-02 21:12:17,331 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 21:12:17,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 21:12:17,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 21:12:18,004 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 21:12:18,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 21:12:18,011 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 21:12:18,124 INFO L356 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-02 21:12:18,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 80 [2022-11-02 21:12:19,214 INFO L356 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-02 21:12:19,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 80 [2022-11-02 21:12:19,333 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 21:12:19,333 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 21:12:19,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 21:12:20,630 INFO L356 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-02 21:12:20,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 80 [2022-11-02 21:12:20,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:20,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 21:12:22,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 21:12:23,971 INFO L356 Elim1Store]: treesize reduction 21, result has 48.8 percent of original size [2022-11-02 21:12:23,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 191 treesize of output 158 [2022-11-02 21:12:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:25,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:25,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:25,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262274304] [2022-11-02 21:12:25,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262274304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:25,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:25,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-02 21:12:25,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148115832] [2022-11-02 21:12:25,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:25,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 21:12:25,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:25,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 21:12:25,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:12:25,742 INFO L87 Difference]: Start difference. First operand 275 states and 306 transitions. Second operand has 24 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 states have internal predecessors, (43), 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) [2022-11-02 21:12:28,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:28,829 INFO L93 Difference]: Finished difference Result 284 states and 317 transitions. [2022-11-02 21:12:28,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 21:12:28,830 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 states have internal predecessors, (43), 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) Word has length 49 [2022-11-02 21:12:28,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:28,832 INFO L225 Difference]: With dead ends: 284 [2022-11-02 21:12:28,832 INFO L226 Difference]: Without dead ends: 284 [2022-11-02 21:12:28,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2022-11-02 21:12:28,834 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 70 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 1838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 936 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:28,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1808 Invalid, 1838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 885 Invalid, 0 Unknown, 936 Unchecked, 2.1s Time] [2022-11-02 21:12:28,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-02 21:12:28,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 277. [2022-11-02 21:12:28,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 197 states have (on average 1.4467005076142132) internal successors, (285), 258 states have internal predecessors, (285), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-02 21:12:28,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 309 transitions. [2022-11-02 21:12:28,842 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 309 transitions. Word has length 49 [2022-11-02 21:12:28,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:28,842 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 309 transitions. [2022-11-02 21:12:28,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 states have internal predecessors, (43), 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) [2022-11-02 21:12:28,843 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 309 transitions. [2022-11-02 21:12:28,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-02 21:12:28,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:28,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:28,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-11-02 21:12:29,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:29,064 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:12:29,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:29,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1345808632, now seen corresponding path program 1 times [2022-11-02 21:12:29,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:29,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498528135] [2022-11-02 21:12:29,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:29,066 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:29,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:29,067 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:29,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 21:12:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:30,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 108 conjunts are in the unsatisfiable core [2022-11-02 21:12:30,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:30,307 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 21:12:30,442 INFO L356 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-02 21:12:30,443 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-11-02 21:12:31,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:12:31,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:12:31,259 INFO L356 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-02 21:12:31,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-02 21:12:31,378 INFO L356 Elim1Store]: treesize reduction 78, result has 35.0 percent of original size [2022-11-02 21:12:31,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 67 [2022-11-02 21:12:31,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:31,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:31,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:31,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-02 21:12:31,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-02 21:12:32,123 INFO L356 Elim1Store]: treesize reduction 58, result has 26.6 percent of original size [2022-11-02 21:12:32,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 38 treesize of output 44 [2022-11-02 21:12:32,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 21:12:32,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-02 21:12:32,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 39 [2022-11-02 21:12:33,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:33,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:33,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:33,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:33,859 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 21:12:33,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 57 [2022-11-02 21:12:33,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:33,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:33,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:33,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:33,895 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 21:12:33,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 78 [2022-11-02 21:12:33,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-02 21:12:34,817 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-02 21:12:34,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2022-11-02 21:12:34,863 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 21:12:34,864 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2022-11-02 21:12:34,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-02 21:12:35,175 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 21:12:35,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2022-11-02 21:12:35,217 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-02 21:12:35,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:35,273 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 21:12:35,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-02 21:12:35,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-02 21:12:35,647 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 21:12:35,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2022-11-02 21:12:35,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:35,721 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 21:12:35,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-02 21:12:36,097 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 21:12:36,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2022-11-02 21:12:36,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-02 21:12:36,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:36,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:36,164 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-02 21:12:39,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2022-11-02 21:12:40,049 INFO L356 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-11-02 21:12:40,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 52 [2022-11-02 21:12:40,093 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-02 21:12:40,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-02 21:12:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:40,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:40,535 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:40,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498528135] [2022-11-02 21:12:40,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498528135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:40,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:40,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-02 21:12:40,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126487143] [2022-11-02 21:12:40,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:40,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 21:12:40,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:40,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 21:12:40,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=743, Unknown=0, NotChecked=0, Total=812 [2022-11-02 21:12:40,537 INFO L87 Difference]: Start difference. First operand 277 states and 309 transitions. Second operand has 29 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 24 states have internal predecessors, (43), 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) [2022-11-02 21:12:42,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:42,706 INFO L93 Difference]: Finished difference Result 309 states and 343 transitions. [2022-11-02 21:12:42,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:12:42,714 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 24 states have internal predecessors, (43), 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) Word has length 49 [2022-11-02 21:12:42,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:42,717 INFO L225 Difference]: With dead ends: 309 [2022-11-02 21:12:42,717 INFO L226 Difference]: Without dead ends: 309 [2022-11-02 21:12:42,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=121, Invalid=1285, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 21:12:42,718 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 69 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1262 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:42,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1828 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 374 Invalid, 0 Unknown, 1262 Unchecked, 0.9s Time] [2022-11-02 21:12:42,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-11-02 21:12:42,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2022-11-02 21:12:42,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 219 states have (on average 1.4063926940639269) internal successors, (308), 280 states have internal predecessors, (308), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-02 21:12:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 332 transitions. [2022-11-02 21:12:42,734 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 332 transitions. Word has length 49 [2022-11-02 21:12:42,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:42,734 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 332 transitions. [2022-11-02 21:12:42,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 24 states have internal predecessors, (43), 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) [2022-11-02 21:12:42,735 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 332 transitions. [2022-11-02 21:12:42,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-02 21:12:42,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:42,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:42,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:42,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:42,959 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-02 21:12:42,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:42,959 INFO L85 PathProgramCache]: Analyzing trace with hash 459629702, now seen corresponding path program 1 times [2022-11-02 21:12:42,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:42,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707331251] [2022-11-02 21:12:42,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:42,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:42,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:42,962 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:42,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 21:12:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:12:43,697 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:12:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:12:44,392 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-02 21:12:44,393 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:12:44,394 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 79 remaining) [2022-11-02 21:12:44,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 79 remaining) [2022-11-02 21:12:44,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 79 remaining) [2022-11-02 21:12:44,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 79 remaining) [2022-11-02 21:12:44,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 79 remaining) [2022-11-02 21:12:44,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr4ASSERT_VIOLATIONMEMORY_FREE (73 of 79 remaining) [2022-11-02 21:12:44,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr5ASSERT_VIOLATIONMEMORY_FREE (72 of 79 remaining) [2022-11-02 21:12:44,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr6ASSERT_VIOLATIONMEMORY_FREE (71 of 79 remaining) [2022-11-02 21:12:44,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 79 remaining) [2022-11-02 21:12:44,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 79 remaining) [2022-11-02 21:12:44,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 79 remaining) [2022-11-02 21:12:44,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 79 remaining) [2022-11-02 21:12:44,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 79 remaining) [2022-11-02 21:12:44,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 79 remaining) [2022-11-02 21:12:44,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 79 remaining) [2022-11-02 21:12:44,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 79 remaining) [2022-11-02 21:12:44,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 79 remaining) [2022-11-02 21:12:44,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 79 remaining) [2022-11-02 21:12:44,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 79 remaining) [2022-11-02 21:12:44,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 79 remaining) [2022-11-02 21:12:44,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 79 remaining) [2022-11-02 21:12:44,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 79 remaining) [2022-11-02 21:12:44,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 79 remaining) [2022-11-02 21:12:44,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 79 remaining) [2022-11-02 21:12:44,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 79 remaining) [2022-11-02 21:12:44,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 79 remaining) [2022-11-02 21:12:44,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 79 remaining) [2022-11-02 21:12:44,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 79 remaining) [2022-11-02 21:12:44,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 79 remaining) [2022-11-02 21:12:44,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 79 remaining) [2022-11-02 21:12:44,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 79 remaining) [2022-11-02 21:12:44,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 79 remaining) [2022-11-02 21:12:44,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 79 remaining) [2022-11-02 21:12:44,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 79 remaining) [2022-11-02 21:12:44,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 79 remaining) [2022-11-02 21:12:44,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 79 remaining) [2022-11-02 21:12:44,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 79 remaining) [2022-11-02 21:12:44,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 79 remaining) [2022-11-02 21:12:44,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 79 remaining) [2022-11-02 21:12:44,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 79 remaining) [2022-11-02 21:12:44,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 79 remaining) [2022-11-02 21:12:44,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 79 remaining) [2022-11-02 21:12:44,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 79 remaining) [2022-11-02 21:12:44,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 79 remaining) [2022-11-02 21:12:44,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 79 remaining) [2022-11-02 21:12:44,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 79 remaining) [2022-11-02 21:12:44,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONARRAY_INDEX (32 of 79 remaining) [2022-11-02 21:12:44,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 79 remaining) [2022-11-02 21:12:44,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 79 remaining) [2022-11-02 21:12:44,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 79 remaining) [2022-11-02 21:12:44,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 79 remaining) [2022-11-02 21:12:44,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 79 remaining) [2022-11-02 21:12:44,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 79 remaining) [2022-11-02 21:12:44,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 79 remaining) [2022-11-02 21:12:44,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 79 remaining) [2022-11-02 21:12:44,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 79 remaining) [2022-11-02 21:12:44,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 79 remaining) [2022-11-02 21:12:44,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 79 remaining) [2022-11-02 21:12:44,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 79 remaining) [2022-11-02 21:12:44,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 79 remaining) [2022-11-02 21:12:44,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE (18 of 79 remaining) [2022-11-02 21:12:44,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE (17 of 79 remaining) [2022-11-02 21:12:44,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE (16 of 79 remaining) [2022-11-02 21:12:44,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 79 remaining) [2022-11-02 21:12:44,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 79 remaining) [2022-11-02 21:12:44,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (13 of 79 remaining) [2022-11-02 21:12:44,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE (12 of 79 remaining) [2022-11-02 21:12:44,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE (11 of 79 remaining) [2022-11-02 21:12:44,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE (10 of 79 remaining) [2022-11-02 21:12:44,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE (9 of 79 remaining) [2022-11-02 21:12:44,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE (8 of 79 remaining) [2022-11-02 21:12:44,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 79 remaining) [2022-11-02 21:12:44,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 79 remaining) [2022-11-02 21:12:44,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 79 remaining) [2022-11-02 21:12:44,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 79 remaining) [2022-11-02 21:12:44,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE (3 of 79 remaining) [2022-11-02 21:12:44,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE (2 of 79 remaining) [2022-11-02 21:12:44,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE (1 of 79 remaining) [2022-11-02 21:12:44,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK (0 of 79 remaining) [2022-11-02 21:12:44,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:44,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:44,648 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:44,653 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:12:44,664 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-02 21:12:44,665 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-02 21:12:44,666 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-02 21:12:44,666 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-02 21:12:44,667 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-02 21:12:44,667 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-02 21:12:44,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:12:44 BoogieIcfgContainer [2022-11-02 21:12:44,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:12:44,717 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:12:44,717 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:12:44,717 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:12:44,718 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:56" (3/4) ... [2022-11-02 21:12:44,720 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-02 21:12:44,734 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-02 21:12:44,735 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-02 21:12:44,735 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-02 21:12:44,735 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-02 21:12:44,736 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-02 21:12:44,736 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-02 21:12:44,833 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 21:12:44,833 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:12:44,834 INFO L158 Benchmark]: Toolchain (without parser) took 111145.63ms. Allocated memory was 60.8MB in the beginning and 151.0MB in the end (delta: 90.2MB). Free memory was 36.9MB in the beginning and 112.4MB in the end (delta: -75.5MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2022-11-02 21:12:44,834 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 60.8MB. Free memory was 41.9MB in the beginning and 41.8MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:12:44,835 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1016.82ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 36.8MB in the beginning and 53.6MB in the end (delta: -16.8MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2022-11-02 21:12:44,835 INFO L158 Benchmark]: Boogie Procedure Inliner took 132.83ms. Allocated memory is still 75.5MB. Free memory was 53.6MB in the beginning and 50.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:12:44,835 INFO L158 Benchmark]: Boogie Preprocessor took 47.22ms. Allocated memory is still 75.5MB. Free memory was 50.4MB in the beginning and 47.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:12:44,835 INFO L158 Benchmark]: RCFGBuilder took 1603.07ms. Allocated memory is still 75.5MB. Free memory was 47.5MB in the beginning and 41.3MB in the end (delta: 6.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-02 21:12:44,836 INFO L158 Benchmark]: TraceAbstraction took 108220.29ms. Allocated memory was 75.5MB in the beginning and 151.0MB in the end (delta: 75.5MB). Free memory was 40.6MB in the beginning and 118.7MB in the end (delta: -78.2MB). Peak memory consumption was 81.2MB. Max. memory is 16.1GB. [2022-11-02 21:12:44,836 INFO L158 Benchmark]: Witness Printer took 116.82ms. Allocated memory is still 151.0MB. Free memory was 118.7MB in the beginning and 112.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-02 21:12:44,848 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 60.8MB. Free memory was 41.9MB in the beginning and 41.8MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1016.82ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 36.8MB in the beginning and 53.6MB in the end (delta: -16.8MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 132.83ms. Allocated memory is still 75.5MB. Free memory was 53.6MB in the beginning and 50.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.22ms. Allocated memory is still 75.5MB. Free memory was 50.4MB in the beginning and 47.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1603.07ms. Allocated memory is still 75.5MB. Free memory was 47.5MB in the beginning and 41.3MB in the end (delta: 6.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 108220.29ms. Allocated memory was 75.5MB in the beginning and 151.0MB in the end (delta: 75.5MB). Free memory was 40.6MB in the beginning and 118.7MB in the end (delta: -78.2MB). Peak memory consumption was 81.2MB. Max. memory is 16.1GB. * Witness Printer took 116.82ms. Allocated memory is still 151.0MB. Free memory was 118.7MB in the beginning and 112.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled * 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: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L820-L823] static int (*dispatch_type[])(struct hid_parser *parser, struct hid_item *item) = { hid_parser_main }; [L859] struct hid_device dev; VAL [dev={2:0}, ldv_global_msg_list={1:0}] [L867] CALL entry_point() [L861] CALL probe_23(&dev) [L842] int ret = - -3; VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, ret=3] [L843] CALL, EXPR ldv_malloc(sizeof(struct hid_report_enum)) VAL [\old(size)=1036, dev={2:0}, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L843] RET, EXPR ldv_malloc(sizeof(struct hid_report_enum)) VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, ldv_malloc(sizeof(struct hid_report_enum))={18:0}, ret=3] [L843] struct hid_report_enum *p = (struct hid_report_enum *)ldv_malloc(sizeof(struct hid_report_enum)); [L844] COND FALSE !(p==0) VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, p={18:0}, ret=3] [L846] CALL LDV_INIT_LIST_HEAD(&p->report_list) VAL [dev={2:0}, ldv_global_msg_list={1:0}, list={18:4}] [L540] list->next = list VAL [dev={2:0}, ldv_global_msg_list={1:0}, list={18:4}, list={18:4}] [L541] list->prev = list VAL [dev={2:0}, ldv_global_msg_list={1:0}, list={18:4}, list={18:4}] [L846] RET LDV_INIT_LIST_HEAD(&p->report_list) VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, p={18:0}, ret=3] [L847] dev->report_enum = p VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, p={18:0}, ret=3] [L848] CALL hid_open_report(dev) [L812] struct hid_parser *parser; [L813] struct hid_item item; VAL [dev={2:0}, device={2:0}, device={2:0}, item={23:0}, ldv_global_msg_list={1:0}] [L814] CALL, EXPR ldv_zalloc(sizeof(struct hid_parser)) VAL [dev={2:0}, ldv_global_msg_list={1:0}] [L533] EXPR, FCALL calloc(size, 1) [L533] return calloc(size, 1); VAL [\old(size)=8, \result={3:0}, calloc(size, 1)={3:0}, dev={2:0}, ldv_global_msg_list={1:0}, size=8] [L814] RET, EXPR ldv_zalloc(sizeof(struct hid_parser)) VAL [dev={2:0}, device={2:0}, device={2:0}, item={23:0}, ldv_global_msg_list={1:0}, ldv_zalloc(sizeof(struct hid_parser))={3:0}] [L814] parser = ldv_zalloc(sizeof(struct hid_parser)) [L815] COND FALSE !(!parser) VAL [dev={2:0}, device={2:0}, device={2:0}, item={23:0}, ldv_global_msg_list={1:0}, parser={3:0}] [L818] parser->device = device VAL [dev={2:0}, device={2:0}, device={2:0}, item={23:0}, ldv_global_msg_list={1:0}, parser={3:0}] [L819] CALL, EXPR ldv_positive() [L519] int r = __VERIFIER_nondet_int(); [L520] COND TRUE r>0 [L520] return r; VAL [\result=1610612738, dev={2:0}, ldv_global_msg_list={1:0}, r=1610612738] [L819] RET, EXPR ldv_positive() [L819] parser->report_id = ldv_positive() VAL [dev={2:0}, device={2:0}, device={2:0}, item={23:0}, ldv_global_msg_list={1:0}, ldv_positive()=1610612738, parser={3:0}] [L824] CALL, EXPR fetch_item(&item) [L778] COND FALSE !(__VERIFIER_nondet_int()) [L781] item->type = 0 VAL [dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}] [L782] item->a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}] [L783] item->b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}] [L784] item->c = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}] [L785] return 0; VAL [\result=0, dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}] [L824] RET, EXPR fetch_item(&item) [L824] COND TRUE fetch_item(&item)!=-1 [L825] EXPR item.type VAL [dev={2:0}, device={2:0}, device={2:0}, item={23:0}, item.type=0, ldv_global_msg_list={1:0}, parser={3:0}] [L825] EXPR dispatch_type[item.type] [L825] CALL dispatch_type[item.type](parser, &item) [L800] EXPR parser->device VAL [dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}, parser={3:0}, parser={3:0}, parser->device={2:0}] [L800] EXPR parser->report_id VAL [dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}, parser={3:0}, parser={3:0}, parser->device={2:0}, parser->report_id=1610612738] [L800] CALL hid_register_report(parser->device, parser->report_id) [L788] EXPR device->report_enum VAL [\old(id)=1610612738, dev={2:0}, device={2:0}, device={2:0}, device->report_enum={18:0}, id=1610612738, ldv_global_msg_list={1:0}] [L788] struct hid_report_enum *report_enum = device->report_enum; [L789] struct hid_report *report; VAL [\old(id)=1610612738, dev={2:0}, device={2:0}, device={2:0}, id=1610612738, ldv_global_msg_list={1:0}, report_enum={18:0}] [L790] report_enum->report_id_hash[id] - 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: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free 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: -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: -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: -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: 825]: Unable to prove that array index is always in bounds Unable to prove that array index is always in bounds 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: -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: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free 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: 834]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that free always succeeds Unable to prove that free 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: 839]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 839]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 839]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 866]: 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 7 procedures, 204 locations, 79 error locations. Started 1 CEGAR loops. OverallTime: 108.1s, OverallIterations: 32, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 33.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2804 SdHoareTripleChecker+Valid, 23.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2758 mSDsluCounter, 28815 SdHoareTripleChecker+Invalid, 20.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 7133 IncrementalHoareTripleChecker+Unchecked, 23327 mSDsCounter, 287 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9597 IncrementalHoareTripleChecker+Invalid, 17017 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 287 mSolverCounterUnsat, 5488 mSDtfsCounter, 9597 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1106 GetRequests, 710 SyntacticMatches, 23 SemanticMatches, 373 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1519 ImplicationChecksByTransitivity, 38.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=299occurred in iteration=31, InterpolantAutomatonStates: 366, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 31 MinimizatonAttempts, 705 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 5.2s SatisfiabilityAnalysisTime, 57.9s InterpolantComputationTime, 1092 NumberOfCodeBlocks, 1092 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1012 ConstructedInterpolants, 336 QuantifiedInterpolants, 24016 SizeOfPredicates, 335 NumberOfNonLiveVariables, 6101 ConjunctsInSsa, 818 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 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! [2022-11-02 21:12:44,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90f68fc7-0d45-4978-b73e-ea7c4c31b627/bin/uautomizer-Dbtcem3rbc/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)