./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF --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 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:21:26,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:21:26,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:21:26,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:21:26,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:21:26,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:21:26,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:21:26,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:21:26,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:21:26,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:21:26,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:21:26,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:21:26,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:21:26,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:21:26,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:21:26,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:21:26,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:21:26,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:21:26,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:21:26,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:21:26,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:21:26,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:21:26,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:21:26,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:21:26,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:21:26,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:21:26,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:21:26,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:21:26,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:21:26,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:21:26,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:21:26,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:21:26,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:21:26,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:21:26,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:21:26,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:21:26,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:21:26,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:21:26,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:21:26,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:21:26,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:21:26,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 06:21:26,977 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:21:26,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:21:26,986 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:21:26,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:21:26,992 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:21:26,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:21:26,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:21:26,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:21:26,994 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:21:26,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:21:26,996 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:21:26,996 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:21:26,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:21:26,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:21:26,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:21:26,997 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 06:21:26,998 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 06:21:26,998 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 06:21:26,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:21:26,999 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:21:26,999 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:21:27,000 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:21:27,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:21:27,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:21:27,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:21:27,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:21:27,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:21:27,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:21:27,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:21:27,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:21:27,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:21:27,005 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_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 [2021-11-20 06:21:27,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:21:27,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:21:27,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:21:27,352 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:21:27,352 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:21:27,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2021-11-20 06:21:27,427 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/data/50c311c3d/598035f656464514a9cb5acb7e43d393/FLAGc08dd09d7 [2021-11-20 06:21:28,100 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:21:28,100 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2021-11-20 06:21:28,130 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/data/50c311c3d/598035f656464514a9cb5acb7e43d393/FLAGc08dd09d7 [2021-11-20 06:21:28,343 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/data/50c311c3d/598035f656464514a9cb5acb7e43d393 [2021-11-20 06:21:28,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:21:28,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:21:28,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:21:28,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:21:28,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:21:28,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:21:28" (1/1) ... [2021-11-20 06:21:28,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b08bcce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:28, skipping insertion in model container [2021-11-20 06:21:28,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:21:28" (1/1) ... [2021-11-20 06:21:28,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:21:28,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:21:28,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:21:28,921 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:805) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.PostProcessor.postProcess(PostProcessor.java:211) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:622) 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) [2021-11-20 06:21:28,934 INFO L158 Benchmark]: Toolchain (without parser) took 583.52ms. Allocated memory is still 83.9MB. Free memory was 52.6MB in the beginning and 38.7MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 06:21:28,935 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory is still 50.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:21:28,937 INFO L158 Benchmark]: CACSL2BoogieTranslator took 580.95ms. Allocated memory is still 83.9MB. Free memory was 52.3MB in the beginning and 38.7MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 06:21:28,940 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory is still 50.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 580.95ms. Allocated memory is still 83.9MB. Free memory was 52.3MB in the beginning and 38.7MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF --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 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:21:31,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:21:31,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:21:31,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:21:31,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:21:31,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:21:31,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:21:31,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:21:31,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:21:31,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:21:31,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:21:31,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:21:31,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:21:31,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:21:31,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:21:31,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:21:31,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:21:31,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:21:31,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:21:31,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:21:31,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:21:31,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:21:31,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:21:31,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:21:31,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:21:31,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:21:31,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:21:31,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:21:31,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:21:31,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:21:31,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:21:31,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:21:31,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:21:31,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:21:31,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:21:31,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:21:31,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:21:31,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:21:31,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:21:31,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:21:31,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:21:31,717 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 06:21:31,765 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:21:31,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:21:31,766 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:21:31,766 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:21:31,767 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:21:31,767 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:21:31,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:21:31,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:21:31,770 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:21:31,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:21:31,771 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:21:31,772 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:21:31,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:21:31,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:21:31,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:21:31,773 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 06:21:31,773 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 06:21:31,773 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 06:21:31,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:21:31,774 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:21:31,774 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 06:21:31,774 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 06:21:31,774 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:21:31,775 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:21:31,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:21:31,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:21:31,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:21:31,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:21:31,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:21:31,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:21:31,776 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 06:21:31,777 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 06:21:31,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:21:31,777 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 06:21:31,778 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_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 [2021-11-20 06:21:32,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:21:32,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:21:32,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:21:32,264 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:21:32,265 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:21:32,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2021-11-20 06:21:32,350 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/data/d920e4bb4/2fa0c5e066fd4a7b98b8db808bca7fe9/FLAG14997b248 [2021-11-20 06:21:33,096 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:21:33,097 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2021-11-20 06:21:33,126 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/data/d920e4bb4/2fa0c5e066fd4a7b98b8db808bca7fe9/FLAG14997b248 [2021-11-20 06:21:33,266 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/data/d920e4bb4/2fa0c5e066fd4a7b98b8db808bca7fe9 [2021-11-20 06:21:33,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:21:33,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:21:33,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:21:33,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:21:33,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:21:33,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:21:33" (1/1) ... [2021-11-20 06:21:33,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74acbc4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:33, skipping insertion in model container [2021-11-20 06:21:33,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:21:33" (1/1) ... [2021-11-20 06:21:33,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:21:33,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:21:33,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:21:33,914 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 06:21:33,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:21:34,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:21:34,087 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:21:34,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:21:34,238 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:21:34,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:34 WrapperNode [2021-11-20 06:21:34,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:21:34,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:21:34,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:21:34,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:21:34,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:34" (1/1) ... [2021-11-20 06:21:34,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:34" (1/1) ... [2021-11-20 06:21:34,356 INFO L137 Inliner]: procedures = 175, calls = 119, calls flagged for inlining = 30, calls inlined = 15, statements flattened = 198 [2021-11-20 06:21:34,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:21:34,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:21:34,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:21:34,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:21:34,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:34" (1/1) ... [2021-11-20 06:21:34,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:34" (1/1) ... [2021-11-20 06:21:34,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:34" (1/1) ... [2021-11-20 06:21:34,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:34" (1/1) ... [2021-11-20 06:21:34,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:34" (1/1) ... [2021-11-20 06:21:34,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:34" (1/1) ... [2021-11-20 06:21:34,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:34" (1/1) ... [2021-11-20 06:21:34,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:21:34,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:21:34,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:21:34,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:21:34,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:34" (1/1) ... [2021-11-20 06:21:34,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:21:34,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:21:34,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:21:34,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:21:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 06:21:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-11-20 06:21:34,551 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-11-20 06:21:34,551 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-11-20 06:21:34,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-11-20 06:21:34,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 06:21:34,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 06:21:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:21:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:21:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2021-11-20 06:21:34,552 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2021-11-20 06:21:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:21:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:21:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:21:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 06:21:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:21:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 06:21:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-11-20 06:21:34,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-11-20 06:21:34,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-20 06:21:34,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-20 06:21:34,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:21:34,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:21:34,833 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:21:34,835 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:21:35,810 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:21:35,821 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:21:35,821 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 06:21:35,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:21:35 BoogieIcfgContainer [2021-11-20 06:21:35,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:21:35,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:21:35,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:21:35,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:21:35,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:21:33" (1/3) ... [2021-11-20 06:21:35,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1626afba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:21:35, skipping insertion in model container [2021-11-20 06:21:35,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:34" (2/3) ... [2021-11-20 06:21:35,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1626afba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:21:35, skipping insertion in model container [2021-11-20 06:21:35,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:21:35" (3/3) ... [2021-11-20 06:21:35,835 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test23_1.i [2021-11-20 06:21:35,843 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:21:35,843 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 79 error locations. [2021-11-20 06:21:35,893 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:21:35,900 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:21:35,901 INFO L340 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2021-11-20 06:21:35,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 111 states have (on average 1.8468468468468469) internal successors, (205), 190 states have internal predecessors, (205), 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) [2021-11-20 06:21:35,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:21:35,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:35,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:35,932 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:21:35,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:35,938 INFO L85 PathProgramCache]: Analyzing trace with hash 441980658, now seen corresponding path program 1 times [2021-11-20 06:21:35,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:21:35,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195798705] [2021-11-20 06:21:35,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:35,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:21:35,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:21:35,961 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:21:35,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 06:21:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:36,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:21:36,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:36,163 INFO L388 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 [2021-11-20 06:21:36,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:36,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:36,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:36,351 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:21:36,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195798705] [2021-11-20 06:21:36,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195798705] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:36,352 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:36,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-20 06:21:36,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150672297] [2021-11-20 06:21:36,355 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:36,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:21:36,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:21:36,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:21:36,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:21:36,396 INFO L87 Difference]: Start difference. First operand has 205 states, 111 states have (on average 1.8468468468468469) internal successors, (205), 190 states have internal predecessors, (205), 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) [2021-11-20 06:21:37,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:37,564 INFO L93 Difference]: Finished difference Result 232 states and 249 transitions. [2021-11-20 06:21:37,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:21:37,568 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 [2021-11-20 06:21:37,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:37,589 INFO L225 Difference]: With dead ends: 232 [2021-11-20 06:21:37,589 INFO L226 Difference]: Without dead ends: 228 [2021-11-20 06:21:37,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:21:37,599 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 28 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:37,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 851 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 06:21:37,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-20 06:21:37,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 212. [2021-11-20 06:21:37,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 117 states have (on average 1.794871794871795) internal successors, (210), 195 states have internal predecessors, (210), 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) [2021-11-20 06:21:37,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 229 transitions. [2021-11-20 06:21:37,681 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 229 transitions. Word has length 12 [2021-11-20 06:21:37,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:37,682 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 229 transitions. [2021-11-20 06:21:37,682 INFO L471 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) [2021-11-20 06:21:37,683 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 229 transitions. [2021-11-20 06:21:37,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:21:37,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:37,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:37,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-20 06:21:37,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:21:37,896 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:21:37,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:37,897 INFO L85 PathProgramCache]: Analyzing trace with hash 441980659, now seen corresponding path program 1 times [2021-11-20 06:21:37,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:21:37,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128260414] [2021-11-20 06:21:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:37,899 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:21:37,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:21:37,911 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:21:37,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 06:21:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:38,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 06:21:38,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:38,042 INFO L388 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 [2021-11-20 06:21:38,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:38,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:38,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:38,910 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:21:38,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128260414] [2021-11-20 06:21:38,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1128260414] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:38,911 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:38,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-20 06:21:38,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622093271] [2021-11-20 06:21:38,911 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:38,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:21:38,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:21:38,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:21:38,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:21:38,914 INFO L87 Difference]: Start difference. First operand 212 states and 229 transitions. Second operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:21:41,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:41,407 INFO L93 Difference]: Finished difference Result 238 states and 255 transitions. [2021-11-20 06:21:41,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:21:41,413 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 12 [2021-11-20 06:21:41,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:41,416 INFO L225 Difference]: With dead ends: 238 [2021-11-20 06:21:41,416 INFO L226 Difference]: Without dead ends: 238 [2021-11-20 06:21:41,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:21:41,419 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 42 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:41,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 1569 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 06:21:41,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-11-20 06:21:41,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 212. [2021-11-20 06:21:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 117 states have (on average 1.7777777777777777) internal successors, (208), 195 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) [2021-11-20 06:21:41,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 227 transitions. [2021-11-20 06:21:41,441 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 227 transitions. Word has length 12 [2021-11-20 06:21:41,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:41,442 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 227 transitions. [2021-11-20 06:21:41,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:21:41,443 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 227 transitions. [2021-11-20 06:21:41,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:21:41,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:41,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:41,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:21:41,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:21:41,651 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:21:41,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:41,652 INFO L85 PathProgramCache]: Analyzing trace with hash -2110176303, now seen corresponding path program 1 times [2021-11-20 06:21:41,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:21:41,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713394057] [2021-11-20 06:21:41,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:41,653 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:21:41,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:21:41,655 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:21:41,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 06:21:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:41,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:21:41,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:41,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:41,939 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:21:41,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713394057] [2021-11-20 06:21:41,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713394057] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:41,939 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:41,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 06:21:41,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585108799] [2021-11-20 06:21:41,940 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:41,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:21:41,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:21:41,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:21:41,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:21:41,942 INFO L87 Difference]: Start difference. First operand 212 states and 227 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) [2021-11-20 06:21:41,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:41,989 INFO L93 Difference]: Finished difference Result 224 states and 239 transitions. [2021-11-20 06:21:41,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:21:41,990 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 [2021-11-20 06:21:41,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:41,992 INFO L225 Difference]: With dead ends: 224 [2021-11-20 06:21:41,992 INFO L226 Difference]: Without dead ends: 224 [2021-11-20 06:21:41,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:21:41,994 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 20 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:41,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 846 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:21:41,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-11-20 06:21:42,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 203. [2021-11-20 06:21:42,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 113 states have (on average 1.7699115044247788) internal successors, (200), 187 states have internal predecessors, (200), 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) [2021-11-20 06:21:42,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 217 transitions. [2021-11-20 06:21:42,013 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 217 transitions. Word has length 12 [2021-11-20 06:21:42,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:42,013 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 217 transitions. [2021-11-20 06:21:42,014 INFO L471 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) [2021-11-20 06:21:42,014 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 217 transitions. [2021-11-20 06:21:42,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:21:42,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:42,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:42,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:21:42,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:21:42,219 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:21:42,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:42,220 INFO L85 PathProgramCache]: Analyzing trace with hash 441895411, now seen corresponding path program 1 times [2021-11-20 06:21:42,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:21:42,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984009828] [2021-11-20 06:21:42,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:42,221 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:21:42,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:21:42,223 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:21:42,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 06:21:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:42,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:21:42,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:42,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:42,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:42,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:42,440 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:21:42,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984009828] [2021-11-20 06:21:42,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984009828] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:42,441 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:42,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 06:21:42,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069187956] [2021-11-20 06:21:42,442 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:42,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:21:42,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:21:42,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:21:42,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:21:42,443 INFO L87 Difference]: Start difference. First operand 203 states and 217 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) [2021-11-20 06:21:42,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:42,493 INFO L93 Difference]: Finished difference Result 224 states and 238 transitions. [2021-11-20 06:21:42,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:21:42,494 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 [2021-11-20 06:21:42,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:42,496 INFO L225 Difference]: With dead ends: 224 [2021-11-20 06:21:42,497 INFO L226 Difference]: Without dead ends: 224 [2021-11-20 06:21:42,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:21:42,499 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 129 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:42,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 778 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:21:42,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-11-20 06:21:42,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 203. [2021-11-20 06:21:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 113 states have (on average 1.761061946902655) internal successors, (199), 187 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) [2021-11-20 06:21:42,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 216 transitions. [2021-11-20 06:21:42,515 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 216 transitions. Word has length 12 [2021-11-20 06:21:42,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:42,515 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 216 transitions. [2021-11-20 06:21:42,516 INFO L471 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) [2021-11-20 06:21:42,516 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 216 transitions. [2021-11-20 06:21:42,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:21:42,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:42,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:42,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:21:42,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:21:42,731 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:21:42,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:42,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2110261550, now seen corresponding path program 1 times [2021-11-20 06:21:42,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:21:42,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164143789] [2021-11-20 06:21:42,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:42,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:21:42,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:21:42,734 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:21:42,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 06:21:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:42,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:21:42,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:42,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:42,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:42,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:42,961 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:21:42,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164143789] [2021-11-20 06:21:42,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164143789] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:42,963 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:42,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 06:21:42,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353451854] [2021-11-20 06:21:42,963 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:42,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:21:42,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:21:42,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:21:42,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:21:42,965 INFO L87 Difference]: Start difference. First operand 203 states and 216 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:21:43,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:43,081 INFO L93 Difference]: Finished difference Result 216 states and 226 transitions. [2021-11-20 06:21:43,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:21:43,087 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2021-11-20 06:21:43,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:43,090 INFO L225 Difference]: With dead ends: 216 [2021-11-20 06:21:43,090 INFO L226 Difference]: Without dead ends: 216 [2021-11-20 06:21:43,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:21:43,093 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 233 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:43,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 1145 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:21:43,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-20 06:21:43,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 205. [2021-11-20 06:21:43,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 115 states have (on average 1.7478260869565216) internal successors, (201), 189 states have internal predecessors, (201), 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) [2021-11-20 06:21:43,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 218 transitions. [2021-11-20 06:21:43,119 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 218 transitions. Word has length 12 [2021-11-20 06:21:43,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:43,119 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 218 transitions. [2021-11-20 06:21:43,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:21:43,120 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 218 transitions. [2021-11-20 06:21:43,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 06:21:43,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:43,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:43,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:21:43,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:21:43,335 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:21:43,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:43,337 INFO L85 PathProgramCache]: Analyzing trace with hash -993578524, now seen corresponding path program 1 times [2021-11-20 06:21:43,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:21:43,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510165979] [2021-11-20 06:21:43,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:43,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:21:43,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:21:43,341 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:21:43,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 06:21:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:43,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:21:43,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:43,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:43,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:43,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:21:43,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510165979] [2021-11-20 06:21:43,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510165979] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:43,526 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:43,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 06:21:43,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929318587] [2021-11-20 06:21:43,526 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:43,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:21:43,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:21:43,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:21:43,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:21:43,529 INFO L87 Difference]: Start difference. First operand 205 states and 218 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) [2021-11-20 06:21:44,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:44,042 INFO L93 Difference]: Finished difference Result 219 states and 234 transitions. [2021-11-20 06:21:44,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:21:44,043 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 [2021-11-20 06:21:44,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:44,045 INFO L225 Difference]: With dead ends: 219 [2021-11-20 06:21:44,045 INFO L226 Difference]: Without dead ends: 211 [2021-11-20 06:21:44,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:21:44,046 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 51 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 402 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 [2021-11-20 06:21:44,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 402 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:21:44,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-20 06:21:44,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 201. [2021-11-20 06:21:44,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 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), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 06:21:44,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 213 transitions. [2021-11-20 06:21:44,056 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 213 transitions. Word has length 13 [2021-11-20 06:21:44,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:44,057 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 213 transitions. [2021-11-20 06:21:44,057 INFO L471 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) [2021-11-20 06:21:44,057 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 213 transitions. [2021-11-20 06:21:44,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 06:21:44,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:44,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:44,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:21:44,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:21:44,274 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:21:44,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:44,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1907571031, now seen corresponding path program 1 times [2021-11-20 06:21:44,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:21:44,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26846452] [2021-11-20 06:21:44,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:44,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:21:44,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:21:44,277 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:21:44,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 06:21:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:44,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 06:21:44,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:46,638 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:21:46,639 INFO L388 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 30 treesize of output 32 [2021-11-20 06:21:46,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:46,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:57,787 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_probe_23_~dev#1.base_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_probe_23_~dev#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ldv_malloc_#res.base_29| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ldv_malloc_#res.base_29|))) (exists ((|v_ldv_malloc_#res.base_28| (_ BitVec 32))) (and (or (exists ((v_ldv_malloc_~size_25 (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_probe_23_~dev#1.offset_BEFORE_CALL_4| (_ bv4 32)) (select (store |c_old(#length)| |v_ldv_malloc_#res.base_28| v_ldv_malloc_~size_25) |v_ULTIMATE.start_probe_23_~dev#1.base_BEFORE_CALL_4|)))) (not (bvule |v_ULTIMATE.start_probe_23_~dev#1.offset_BEFORE_CALL_4| (bvadd |v_ULTIMATE.start_probe_23_~dev#1.offset_BEFORE_CALL_4| (_ bv4 32))))) (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_ldv_malloc_#res.base_28|))))) (and (forall ((ldv_malloc_~size (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_probe_23_~dev#1.offset_BEFORE_CALL_4| (_ bv4 32)) (select (store |c_#length| |v_ldv_malloc_#res.base_29| ldv_malloc_~size) |v_ULTIMATE.start_probe_23_~dev#1.base_BEFORE_CALL_4|))) (bvule |v_ULTIMATE.start_probe_23_~dev#1.offset_BEFORE_CALL_4| (bvadd |v_ULTIMATE.start_probe_23_~dev#1.offset_BEFORE_CALL_4| (_ bv4 32)))))) is different from false [2021-11-20 06:21:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:59,124 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:21:59,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26846452] [2021-11-20 06:21:59,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26846452] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:59,124 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:59,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-20 06:21:59,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419327922] [2021-11-20 06:21:59,125 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:59,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 06:21:59,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:21:59,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 06:21:59,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=99, Unknown=5, NotChecked=20, Total=156 [2021-11-20 06:21:59,126 INFO L87 Difference]: Start difference. First operand 201 states and 213 transitions. Second operand has 13 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:22:04,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:04,956 INFO L93 Difference]: Finished difference Result 211 states and 226 transitions. [2021-11-20 06:22:04,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:22:04,958 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 16 [2021-11-20 06:22:04,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:04,960 INFO L225 Difference]: With dead ends: 211 [2021-11-20 06:22:04,960 INFO L226 Difference]: Without dead ends: 211 [2021-11-20 06:22:04,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=59, Invalid=179, Unknown=6, NotChecked=28, Total=272 [2021-11-20 06:22:04,962 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 63 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 543 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:04,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 784 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 342 Invalid, 0 Unknown, 543 Unchecked, 1.5s Time] [2021-11-20 06:22:04,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-20 06:22:04,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 200. [2021-11-20 06:22:04,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 112 states have (on average 1.75) internal successors, (196), 185 states have internal predecessors, (196), 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) [2021-11-20 06:22:04,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 212 transitions. [2021-11-20 06:22:04,974 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 212 transitions. Word has length 16 [2021-11-20 06:22:04,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:04,974 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 212 transitions. [2021-11-20 06:22:04,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:22:04,975 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 212 transitions. [2021-11-20 06:22:04,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 06:22:04,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:04,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:22:04,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:05,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:05,189 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:22:05,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:05,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1907571030, now seen corresponding path program 1 times [2021-11-20 06:22:05,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:05,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443926545] [2021-11-20 06:22:05,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:05,192 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:05,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:05,193 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:05,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 06:22:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:05,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:22:05,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:05,465 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 06:22:05,465 INFO L388 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 27 treesize of output 34 [2021-11-20 06:22:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:05,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:12,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:12,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:12,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443926545] [2021-11-20 06:22:12,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443926545] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:12,461 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:12,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-20 06:22:12,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048220412] [2021-11-20 06:22:12,461 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:12,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 06:22:12,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:12,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 06:22:12,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=118, Unknown=3, NotChecked=0, Total=156 [2021-11-20 06:22:12,463 INFO L87 Difference]: Start difference. First operand 200 states and 212 transitions. Second operand has 13 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:22:13,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:13,117 INFO L93 Difference]: Finished difference Result 209 states and 224 transitions. [2021-11-20 06:22:13,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:22:13,118 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 16 [2021-11-20 06:22:13,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:13,120 INFO L225 Difference]: With dead ends: 209 [2021-11-20 06:22:13,120 INFO L226 Difference]: Without dead ends: 209 [2021-11-20 06:22:13,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=42, Invalid=137, Unknown=3, NotChecked=0, Total=182 [2021-11-20 06:22:13,121 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 54 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 447 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:13,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 815 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 176 Invalid, 0 Unknown, 447 Unchecked, 0.6s Time] [2021-11-20 06:22:13,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-20 06:22:13,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 199. [2021-11-20 06:22:13,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 112 states have (on average 1.7410714285714286) internal successors, (195), 184 states have internal predecessors, (195), 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) [2021-11-20 06:22:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 211 transitions. [2021-11-20 06:22:13,132 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 211 transitions. Word has length 16 [2021-11-20 06:22:13,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:13,132 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 211 transitions. [2021-11-20 06:22:13,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:22:13,133 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 211 transitions. [2021-11-20 06:22:13,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 06:22:13,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:13,134 INFO L514 BasicCegarLoop]: 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] [2021-11-20 06:22:13,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:13,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:13,347 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:22:13,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:13,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1544157348, now seen corresponding path program 1 times [2021-11-20 06:22:13,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:13,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792070856] [2021-11-20 06:22:13,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:13,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:13,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:13,350 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:13,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 06:22:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:13,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:22:13,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:13,507 INFO L388 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 [2021-11-20 06:22:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:13,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:13,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:13,705 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:13,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792070856] [2021-11-20 06:22:13,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792070856] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:13,705 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:13,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 06:22:13,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048708266] [2021-11-20 06:22:13,706 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:13,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:22:13,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:13,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:22:13,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:22:13,707 INFO L87 Difference]: Start difference. First operand 199 states and 211 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) [2021-11-20 06:22:14,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:14,747 INFO L93 Difference]: Finished difference Result 255 states and 274 transitions. [2021-11-20 06:22:14,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:22:14,748 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 [2021-11-20 06:22:14,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:14,751 INFO L225 Difference]: With dead ends: 255 [2021-11-20 06:22:14,751 INFO L226 Difference]: Without dead ends: 255 [2021-11-20 06:22:14,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:22:14,752 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 71 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:14,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 653 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 06:22:14,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-20 06:22:14,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 227. [2021-11-20 06:22:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 142 states have (on average 1.767605633802817) internal successors, (251), 212 states have internal predecessors, (251), 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) [2021-11-20 06:22:14,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 267 transitions. [2021-11-20 06:22:14,764 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 267 transitions. Word has length 25 [2021-11-20 06:22:14,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:14,764 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 267 transitions. [2021-11-20 06:22:14,765 INFO L471 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) [2021-11-20 06:22:14,765 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 267 transitions. [2021-11-20 06:22:14,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 06:22:14,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:14,766 INFO L514 BasicCegarLoop]: 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] [2021-11-20 06:22:14,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:14,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:14,982 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:22:14,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:14,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1544157349, now seen corresponding path program 1 times [2021-11-20 06:22:14,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:14,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647141779] [2021-11-20 06:22:14,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:14,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:14,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:14,985 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:15,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 06:22:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:15,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:22:15,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:15,168 INFO L388 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 [2021-11-20 06:22:15,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:15,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:15,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:15,895 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:15,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647141779] [2021-11-20 06:22:15,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647141779] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:15,896 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:15,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-20 06:22:15,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508599753] [2021-11-20 06:22:15,896 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:15,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:22:15,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:15,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:22:15,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:22:15,898 INFO L87 Difference]: Start difference. First operand 227 states and 267 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 06:22:18,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:18,659 INFO L93 Difference]: Finished difference Result 289 states and 310 transitions. [2021-11-20 06:22:18,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:22:18,661 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 25 [2021-11-20 06:22:18,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:18,663 INFO L225 Difference]: With dead ends: 289 [2021-11-20 06:22:18,663 INFO L226 Difference]: Without dead ends: 289 [2021-11-20 06:22:18,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:22:18,665 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 105 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:18,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 1014 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-20 06:22:18,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-20 06:22:18,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 229. [2021-11-20 06:22:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 145 states have (on average 1.7448275862068965) internal successors, (253), 213 states have internal predecessors, (253), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 06:22:18,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 271 transitions. [2021-11-20 06:22:18,692 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 271 transitions. Word has length 25 [2021-11-20 06:22:18,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:18,693 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 271 transitions. [2021-11-20 06:22:18,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 06:22:18,694 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 271 transitions. [2021-11-20 06:22:18,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 06:22:18,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:18,695 INFO L514 BasicCegarLoop]: 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] [2021-11-20 06:22:18,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:18,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:18,910 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:22:18,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:18,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2123399988, now seen corresponding path program 1 times [2021-11-20 06:22:18,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:18,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923138145] [2021-11-20 06:22:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:18,912 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:18,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:18,913 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:18,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 06:22:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:19,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:22:19,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:19,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:19,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:19,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:19,216 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:19,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923138145] [2021-11-20 06:22:19,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923138145] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:19,217 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:19,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-20 06:22:19,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798311189] [2021-11-20 06:22:19,217 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:19,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:22:19,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:19,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:22:19,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:22:19,219 INFO L87 Difference]: Start difference. First operand 229 states and 271 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) [2021-11-20 06:22:19,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:19,348 INFO L93 Difference]: Finished difference Result 229 states and 270 transitions. [2021-11-20 06:22:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:22:19,349 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 [2021-11-20 06:22:19,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:19,351 INFO L225 Difference]: With dead ends: 229 [2021-11-20 06:22:19,351 INFO L226 Difference]: Without dead ends: 229 [2021-11-20 06:22:19,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:22:19,353 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 120 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:19,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 834 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:22:19,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-20 06:22:19,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2021-11-20 06:22:19,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 145 states have (on average 1.7379310344827585) internal successors, (252), 213 states have internal predecessors, (252), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 06:22:19,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 270 transitions. [2021-11-20 06:22:19,363 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 270 transitions. Word has length 27 [2021-11-20 06:22:19,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:19,364 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 270 transitions. [2021-11-20 06:22:19,364 INFO L471 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) [2021-11-20 06:22:19,364 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 270 transitions. [2021-11-20 06:22:19,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 06:22:19,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:19,366 INFO L514 BasicCegarLoop]: 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] [2021-11-20 06:22:19,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:19,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:19,580 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:22:19,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:19,580 INFO L85 PathProgramCache]: Analyzing trace with hash -308565232, now seen corresponding path program 1 times [2021-11-20 06:22:19,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:19,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413881852] [2021-11-20 06:22:19,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:19,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:19,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:19,582 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:19,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 06:22:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:19,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:22:19,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:19,761 INFO L388 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 [2021-11-20 06:22:19,865 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 06:22:19,866 INFO L388 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 23 treesize of output 30 [2021-11-20 06:22:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:20,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:26,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:26,967 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:26,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413881852] [2021-11-20 06:22:26,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413881852] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:26,967 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:26,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-20 06:22:26,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635354495] [2021-11-20 06:22:26,968 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:26,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:22:26,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:26,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:22:26,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=80, Unknown=3, NotChecked=0, Total=110 [2021-11-20 06:22:26,970 INFO L87 Difference]: Start difference. First operand 229 states and 270 transitions. Second operand has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 06:22:27,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:27,277 INFO L93 Difference]: Finished difference Result 250 states and 299 transitions. [2021-11-20 06:22:27,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:22:27,277 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2021-11-20 06:22:27,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:27,280 INFO L225 Difference]: With dead ends: 250 [2021-11-20 06:22:27,280 INFO L226 Difference]: Without dead ends: 250 [2021-11-20 06:22:27,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=27, Invalid=80, Unknown=3, NotChecked=0, Total=110 [2021-11-20 06:22:27,281 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 71 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 407 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:27,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 744 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 77 Invalid, 0 Unknown, 407 Unchecked, 0.3s Time] [2021-11-20 06:22:27,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-20 06:22:27,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 232. [2021-11-20 06:22:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 148 states have (on average 1.7364864864864864) internal successors, (257), 216 states have internal predecessors, (257), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 06:22:27,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 275 transitions. [2021-11-20 06:22:27,292 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 275 transitions. Word has length 33 [2021-11-20 06:22:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:27,293 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 275 transitions. [2021-11-20 06:22:27,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 06:22:27,293 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 275 transitions. [2021-11-20 06:22:27,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 06:22:27,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:27,295 INFO L514 BasicCegarLoop]: 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] [2021-11-20 06:22:27,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-20 06:22:27,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:27,513 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:22:27,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:27,514 INFO L85 PathProgramCache]: Analyzing trace with hash -308565231, now seen corresponding path program 1 times [2021-11-20 06:22:27,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:27,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502559274] [2021-11-20 06:22:27,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:27,515 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:27,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:27,516 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:27,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 06:22:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:27,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 06:22:27,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:27,720 INFO L388 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 [2021-11-20 06:22:27,726 INFO L388 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 [2021-11-20 06:22:29,883 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:22:29,883 INFO L388 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 28 treesize of output 30 [2021-11-20 06:22:29,920 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:22:29,920 INFO L388 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 22 treesize of output 22 [2021-11-20 06:22:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:30,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:41,343 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:41,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502559274] [2021-11-20 06:22:41,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502559274] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:41,343 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:41,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-20 06:22:41,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591352663] [2021-11-20 06:22:41,344 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:41,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:22:41,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:41,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:22:41,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=99, Unknown=5, NotChecked=0, Total=132 [2021-11-20 06:22:41,345 INFO L87 Difference]: Start difference. First operand 232 states and 275 transitions. Second operand has 12 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 06:22:44,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:44,294 INFO L93 Difference]: Finished difference Result 441 states and 483 transitions. [2021-11-20 06:22:44,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 06:22:44,297 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2021-11-20 06:22:44,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:44,300 INFO L225 Difference]: With dead ends: 441 [2021-11-20 06:22:44,301 INFO L226 Difference]: Without dead ends: 441 [2021-11-20 06:22:44,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=49, Invalid=156, Unknown=5, NotChecked=0, Total=210 [2021-11-20 06:22:44,302 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 448 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 619 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:44,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 1040 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 661 Invalid, 0 Unknown, 619 Unchecked, 2.7s Time] [2021-11-20 06:22:44,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-11-20 06:22:44,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 257. [2021-11-20 06:22:44,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 173 states have (on average 1.6820809248554913) internal successors, (291), 241 states have internal predecessors, (291), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 06:22:44,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 309 transitions. [2021-11-20 06:22:44,324 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 309 transitions. Word has length 33 [2021-11-20 06:22:44,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:44,325 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 309 transitions. [2021-11-20 06:22:44,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 06:22:44,325 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 309 transitions. [2021-11-20 06:22:44,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 06:22:44,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:44,332 INFO L514 BasicCegarLoop]: 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] [2021-11-20 06:22:44,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:44,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:44,551 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:22:44,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:44,551 INFO L85 PathProgramCache]: Analyzing trace with hash -975587497, now seen corresponding path program 1 times [2021-11-20 06:22:44,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:44,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886626550] [2021-11-20 06:22:44,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:44,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:44,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:44,554 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:44,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 06:22:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:44,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:22:44,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:44,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:44,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:44,849 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:44,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886626550] [2021-11-20 06:22:44,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886626550] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:44,850 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:44,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 06:22:44,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334541048] [2021-11-20 06:22:44,851 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:44,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:22:44,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:44,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:22:44,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:22:44,852 INFO L87 Difference]: Start difference. First operand 257 states and 309 transitions. Second operand has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-11-20 06:22:45,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:45,228 INFO L93 Difference]: Finished difference Result 327 states and 399 transitions. [2021-11-20 06:22:45,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:22:45,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 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 34 [2021-11-20 06:22:45,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:45,231 INFO L225 Difference]: With dead ends: 327 [2021-11-20 06:22:45,232 INFO L226 Difference]: Without dead ends: 327 [2021-11-20 06:22:45,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:22:45,233 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 52 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:45,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 351 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:22:45,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-11-20 06:22:45,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 254. [2021-11-20 06:22:45,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 173 states have (on average 1.6127167630057804) internal successors, (279), 238 states have internal predecessors, (279), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 06:22:45,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 297 transitions. [2021-11-20 06:22:45,246 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 297 transitions. Word has length 34 [2021-11-20 06:22:45,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:45,247 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 297 transitions. [2021-11-20 06:22:45,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-11-20 06:22:45,247 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 297 transitions. [2021-11-20 06:22:45,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-20 06:22:45,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:45,248 INFO L514 BasicCegarLoop]: 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] [2021-11-20 06:22:45,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:45,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:45,462 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:22:45,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:45,462 INFO L85 PathProgramCache]: Analyzing trace with hash -178484861, now seen corresponding path program 1 times [2021-11-20 06:22:45,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:45,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593139388] [2021-11-20 06:22:45,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:45,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:45,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:45,465 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:45,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 06:22:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:45,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:22:45,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:45,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:45,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:45,776 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:45,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593139388] [2021-11-20 06:22:45,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593139388] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:45,776 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:45,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 06:22:45,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162379518] [2021-11-20 06:22:45,777 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:45,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:22:45,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:45,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:22:45,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:22:45,779 INFO L87 Difference]: Start difference. First operand 254 states and 297 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2021-11-20 06:22:45,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:45,805 INFO L93 Difference]: Finished difference Result 302 states and 348 transitions. [2021-11-20 06:22:45,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:22:45,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 35 [2021-11-20 06:22:45,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:45,808 INFO L225 Difference]: With dead ends: 302 [2021-11-20 06:22:45,808 INFO L226 Difference]: Without dead ends: 302 [2021-11-20 06:22:45,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:22:45,811 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 36 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 595 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 [2021-11-20 06:22:45,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 595 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:22:45,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-20 06:22:45,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 258. [2021-11-20 06:22:45,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 177 states have (on average 1.5988700564971752) internal successors, (283), 242 states have internal predecessors, (283), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 06:22:45,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 301 transitions. [2021-11-20 06:22:45,824 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 301 transitions. Word has length 35 [2021-11-20 06:22:45,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:45,825 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 301 transitions. [2021-11-20 06:22:45,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2021-11-20 06:22:45,825 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 301 transitions. [2021-11-20 06:22:45,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 06:22:45,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:45,827 INFO L514 BasicCegarLoop]: 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] [2021-11-20 06:22:45,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:46,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:46,049 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:22:46,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:46,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1238063083, now seen corresponding path program 1 times [2021-11-20 06:22:46,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:46,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566951448] [2021-11-20 06:22:46,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:46,051 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:46,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:46,053 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:46,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 06:22:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:46,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:22:46,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:46,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:47,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:47,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566951448] [2021-11-20 06:22:47,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566951448] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:47,053 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:47,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 11 [2021-11-20 06:22:47,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649546599] [2021-11-20 06:22:47,054 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:47,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:22:47,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:47,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:22:47,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:22:47,056 INFO L87 Difference]: Start difference. First operand 258 states and 301 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 06:22:47,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:47,363 INFO L93 Difference]: Finished difference Result 369 states and 410 transitions. [2021-11-20 06:22:47,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:22:47,364 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 36 [2021-11-20 06:22:47,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:47,367 INFO L225 Difference]: With dead ends: 369 [2021-11-20 06:22:47,367 INFO L226 Difference]: Without dead ends: 369 [2021-11-20 06:22:47,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:22:47,368 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 217 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:47,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 1407 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 136 Invalid, 0 Unknown, 105 Unchecked, 0.3s Time] [2021-11-20 06:22:47,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-11-20 06:22:47,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 266. [2021-11-20 06:22:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 184 states have (on average 1.576086956521739) internal successors, (290), 249 states have internal predecessors, (290), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 06:22:47,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 308 transitions. [2021-11-20 06:22:47,384 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 308 transitions. Word has length 36 [2021-11-20 06:22:47,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:47,386 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 308 transitions. [2021-11-20 06:22:47,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 06:22:47,386 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 308 transitions. [2021-11-20 06:22:47,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 06:22:47,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:47,388 INFO L514 BasicCegarLoop]: 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] [2021-11-20 06:22:47,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:47,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:47,611 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:22:47,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:47,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1119933624, now seen corresponding path program 1 times [2021-11-20 06:22:47,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:47,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740408942] [2021-11-20 06:22:47,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:47,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:47,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:47,614 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:47,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 06:22:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:47,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:22:47,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:47,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:47,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:47,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:47,956 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:47,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740408942] [2021-11-20 06:22:47,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740408942] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:47,956 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:47,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 06:22:47,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600734484] [2021-11-20 06:22:47,957 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:47,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:22:47,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:47,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:22:47,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:22:47,958 INFO L87 Difference]: Start difference. First operand 266 states and 308 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) 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) [2021-11-20 06:22:48,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:48,043 INFO L93 Difference]: Finished difference Result 292 states and 334 transitions. [2021-11-20 06:22:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:22:48,044 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) 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 40 [2021-11-20 06:22:48,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:48,046 INFO L225 Difference]: With dead ends: 292 [2021-11-20 06:22:48,046 INFO L226 Difference]: Without dead ends: 292 [2021-11-20 06:22:48,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:22:48,047 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 153 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:48,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 865 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:22:48,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-20 06:22:48,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 268. [2021-11-20 06:22:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 186 states have (on average 1.5698924731182795) internal successors, (292), 251 states have internal predecessors, (292), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 06:22:48,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 310 transitions. [2021-11-20 06:22:48,073 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 310 transitions. Word has length 40 [2021-11-20 06:22:48,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:48,074 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 310 transitions. [2021-11-20 06:22:48,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) 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) [2021-11-20 06:22:48,074 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 310 transitions. [2021-11-20 06:22:48,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 06:22:48,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:48,075 INFO L514 BasicCegarLoop]: 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] [2021-11-20 06:22:48,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:48,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:48,289 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:22:48,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:48,290 INFO L85 PathProgramCache]: Analyzing trace with hash 217228028, now seen corresponding path program 1 times [2021-11-20 06:22:48,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:48,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234607484] [2021-11-20 06:22:48,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:48,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:48,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:48,293 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:48,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 06:22:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:48,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:22:48,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:48,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:48,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:48,654 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 06:22:48,655 INFO L388 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 18 [2021-11-20 06:22:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:48,738 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:48,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234607484] [2021-11-20 06:22:48,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234607484] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:48,739 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:48,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 06:22:48,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913618975] [2021-11-20 06:22:48,739 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:48,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:22:48,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:48,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:22:48,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:22:48,740 INFO L87 Difference]: Start difference. First operand 268 states and 310 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-11-20 06:22:49,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:49,068 INFO L93 Difference]: Finished difference Result 282 states and 321 transitions. [2021-11-20 06:22:49,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:22:49,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 42 [2021-11-20 06:22:49,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:49,071 INFO L225 Difference]: With dead ends: 282 [2021-11-20 06:22:49,071 INFO L226 Difference]: Without dead ends: 282 [2021-11-20 06:22:49,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:22:49,073 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 126 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:49,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 400 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:22:49,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-20 06:22:49,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 266. [2021-11-20 06:22:49,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 185 states have (on average 1.545945945945946) internal successors, (286), 249 states have internal predecessors, (286), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 06:22:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 304 transitions. [2021-11-20 06:22:49,085 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 304 transitions. Word has length 42 [2021-11-20 06:22:49,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:49,086 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 304 transitions. [2021-11-20 06:22:49,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-11-20 06:22:49,086 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 304 transitions. [2021-11-20 06:22:49,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 06:22:49,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:49,087 INFO L514 BasicCegarLoop]: 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] [2021-11-20 06:22:49,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:49,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:49,307 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:22:49,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:49,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1780653040, now seen corresponding path program 1 times [2021-11-20 06:22:49,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:49,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584342511] [2021-11-20 06:22:49,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:49,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:49,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:49,309 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:49,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 06:22:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:49,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-20 06:22:49,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:49,776 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:22:49,777 INFO L388 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 41 treesize of output 43 [2021-11-20 06:22:49,808 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-20 06:22:49,808 INFO L388 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 35 treesize of output 37 [2021-11-20 06:22:50,334 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:22:50,335 INFO L388 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 30 treesize of output 32 [2021-11-20 06:22:50,773 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-20 06:22:50,773 INFO L388 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 3 case distinctions, treesize of input 35 treesize of output 44 [2021-11-20 06:22:59,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:59,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:23:35,499 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 06:23:39,009 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|#StackHeapBarrier| (_ BitVec 32)) (|v_ldv_malloc_#res.base_66| (_ BitVec 32)) (|v_ULTIMATE.start_hid_open_report_~#item~0#1.base_19| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |v_ldv_malloc_#res.base_66|)) (not (= |v_ldv_malloc_#res.base_66| (_ bv0 32))) (or (exists ((|v_ULTIMATE.start_hid_open_report_#t~ret52#1.base_37| (_ BitVec 32)) (v_ldv_malloc_~size_63 (_ BitVec 32))) (not (bvule (bvadd (_ bv4 32) |c_~#dev~0.offset|) (select (store (store (store |c_old(#length)| |v_ldv_malloc_#res.base_66| v_ldv_malloc_~size_63) |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_19| (_ bv16 32)) |v_ULTIMATE.start_hid_open_report_#t~ret52#1.base_37| (_ bv8 32)) |c_~#dev~0.base|)))) (not (bvule |c_~#dev~0.offset| (bvadd (_ bv4 32) |c_~#dev~0.offset|)))) (bvult |v_ldv_malloc_#res.base_66| |#StackHeapBarrier|) (bvult |#StackHeapBarrier| |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_19|))) (forall ((|#StackHeapBarrier| (_ BitVec 32)) (|v_ldv_malloc_#res.base_67| (_ BitVec 32)) (|v_ULTIMATE.start_hid_open_report_~#item~0#1.base_19| (_ BitVec 32))) (or (not (bvult |#StackHeapBarrier| |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_19|)) (= |v_ldv_malloc_#res.base_67| (_ bv0 32)) (and (bvule |c_~#dev~0.offset| (bvadd (_ bv4 32) |c_~#dev~0.offset|)) (forall ((ldv_malloc_~size (_ BitVec 32)) (|v_ULTIMATE.start_hid_open_report_#t~ret52#1.base_37| (_ BitVec 32))) (bvule (bvadd (_ bv4 32) |c_~#dev~0.offset|) (select (store (store (store |c_#length| |v_ldv_malloc_#res.base_67| ldv_malloc_~size) |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_19| (_ bv16 32)) |v_ULTIMATE.start_hid_open_report_#t~ret52#1.base_37| (_ bv8 32)) |c_~#dev~0.base|)))) (not (bvult |v_ldv_malloc_#res.base_67| |#StackHeapBarrier|)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_67|))))))) is different from true [2021-11-20 06:23:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:23:40,119 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:23:40,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584342511] [2021-11-20 06:23:40,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584342511] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:23:40,119 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:23:40,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 21 [2021-11-20 06:23:40,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716582354] [2021-11-20 06:23:40,120 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:23:40,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-20 06:23:40,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:23:40,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-20 06:23:40,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=321, Unknown=10, NotChecked=38, Total=462 [2021-11-20 06:23:40,123 INFO L87 Difference]: Start difference. First operand 266 states and 304 transitions. Second operand has 22 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 06:23:49,969 WARN L227 SmtUtils]: Spent 6.14s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 06:23:51,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:23:51,348 INFO L93 Difference]: Finished difference Result 280 states and 318 transitions. [2021-11-20 06:23:51,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:23:51,350 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) Word has length 42 [2021-11-20 06:23:51,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:23:51,352 INFO L225 Difference]: With dead ends: 280 [2021-11-20 06:23:51,352 INFO L226 Difference]: Without dead ends: 280 [2021-11-20 06:23:51,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 48.9s TimeCoverageRelationStatistics Valid=115, Invalid=431, Unknown=10, NotChecked=44, Total=600 [2021-11-20 06:23:51,354 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 113 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 582 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:23:51,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 1148 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 244 Invalid, 0 Unknown, 582 Unchecked, 0.9s Time] [2021-11-20 06:23:51,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-11-20 06:23:51,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 274. [2021-11-20 06:23:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 193 states have (on average 1.5336787564766838) internal successors, (296), 257 states have internal predecessors, (296), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 06:23:51,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 314 transitions. [2021-11-20 06:23:51,365 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 314 transitions. Word has length 42 [2021-11-20 06:23:51,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:23:51,365 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 314 transitions. [2021-11-20 06:23:51,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 06:23:51,366 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 314 transitions. [2021-11-20 06:23:51,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 06:23:51,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:23:51,367 INFO L514 BasicCegarLoop]: 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] [2021-11-20 06:23:51,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-20 06:23:51,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:23:51,583 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:23:51,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:23:51,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1780653039, now seen corresponding path program 1 times [2021-11-20 06:23:51,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:23:51,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460231034] [2021-11-20 06:23:51,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:23:51,585 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:23:51,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:23:51,586 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:23:51,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 06:23:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:23:51,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 06:23:51,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:23:51,993 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:23:51,994 INFO L388 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 25 treesize of output 25 [2021-11-20 06:23:52,379 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:23:52,379 INFO L388 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 16 treesize of output 21 [2021-11-20 06:23:52,517 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 06:23:52,517 INFO L388 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 42 treesize of output 38 [2021-11-20 06:23:52,763 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-20 06:23:52,763 INFO L388 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 41 treesize of output 58 [2021-11-20 06:23:54,293 INFO L354 Elim1Store]: treesize reduction 65, result has 17.7 percent of original size [2021-11-20 06:23:54,293 INFO L388 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 6 case distinctions, treesize of input 74 treesize of output 77 [2021-11-20 06:23:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:23:55,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:24:26,430 INFO L354 Elim1Store]: treesize reduction -1, result has 104.0 percent of original size [2021-11-20 06:24:26,431 INFO L388 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 46 treesize of output 65 [2021-11-20 06:24:40,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:24:40,353 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:24:40,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460231034] [2021-11-20 06:24:40,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460231034] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:40,353 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:24:40,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 15] imperfect sequences [] total 29 [2021-11-20 06:24:40,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016357458] [2021-11-20 06:24:40,354 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:40,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-20 06:24:40,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:24:40,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-20 06:24:40,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=747, Unknown=16, NotChecked=0, Total=870 [2021-11-20 06:24:40,356 INFO L87 Difference]: Start difference. First operand 274 states and 314 transitions. Second operand has 30 states, 25 states have (on average 2.88) internal successors, (72), 27 states have internal predecessors, (72), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 06:24:42,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:42,590 INFO L93 Difference]: Finished difference Result 276 states and 315 transitions. [2021-11-20 06:24:42,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:24:42,591 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 25 states have (on average 2.88) internal successors, (72), 27 states have internal predecessors, (72), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) Word has length 42 [2021-11-20 06:24:42,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:42,594 INFO L225 Difference]: With dead ends: 276 [2021-11-20 06:24:42,594 INFO L226 Difference]: Without dead ends: 276 [2021-11-20 06:24:42,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 38.5s TimeCoverageRelationStatistics Valid=115, Invalid=799, Unknown=16, NotChecked=0, Total=930 [2021-11-20 06:24:42,596 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 36 mSDsluCounter, 2013 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 756 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:42,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 2191 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 756 Unchecked, 0.6s Time] [2021-11-20 06:24:42,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-20 06:24:42,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 274. [2021-11-20 06:24:42,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 193 states have (on average 1.528497409326425) internal successors, (295), 257 states have internal predecessors, (295), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 06:24:42,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 313 transitions. [2021-11-20 06:24:42,614 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 313 transitions. Word has length 42 [2021-11-20 06:24:42,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:42,614 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 313 transitions. [2021-11-20 06:24:42,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 25 states have (on average 2.88) internal successors, (72), 27 states have internal predecessors, (72), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 06:24:42,615 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 313 transitions. [2021-11-20 06:24:42,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-20 06:24:42,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:42,616 INFO L514 BasicCegarLoop]: 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] [2021-11-20 06:24:42,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-20 06:24:42,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:24:42,831 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONARRAY_INDEX === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-11-20 06:24:42,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:42,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1855865600, now seen corresponding path program 1 times [2021-11-20 06:24:42,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:24:42,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538538316] [2021-11-20 06:24:42,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:42,832 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:24:42,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:24:42,833 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:24:42,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0d75b3-b852-451e-85bc-d5add63b94b7/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-20 06:24:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:43,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 06:24:43,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:24:43,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:24:43,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:24:43,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:24:43,182 INFO L388 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 30 treesize of output 39 [2021-11-20 06:24:43,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:43,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 91 [2021-11-20 06:24:47,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:24:47,631 INFO L244 Elim1Store]: Index analysis took 109 ms [2021-11-20 06:24:47,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 66 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 143 [2021-11-20 06:24:57,555 INFO L354 Elim1Store]: treesize reduction 2685, result has 4.9 percent of original size [2021-11-20 06:24:57,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 81 case distinctions, treesize of input 151 treesize of output 195 [2021-11-20 06:25:09,776 WARN L227 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 93 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 06:25:10,265 INFO L354 Elim1Store]: treesize reduction 1410, result has 0.1 percent of original size [2021-11-20 06:25:10,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 190 treesize of output 74 [2021-11-20 06:25:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:25:10,298 INFO L328 TraceCheckSpWp]: Computing backward predicates...