./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:53:58,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:53:58,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:53:58,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:53:58,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:53:58,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:53:58,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:53:58,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:53:58,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:53:58,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:53:58,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:53:58,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:53:58,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:53:58,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:53:58,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:53:58,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:53:58,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:53:58,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:53:58,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:53:58,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:53:58,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:53:58,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:53:58,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:53:58,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:53:58,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:53:58,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:53:58,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:53:58,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:53:58,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:53:58,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:53:58,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:53:58,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:53:58,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:53:58,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:53:58,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:53:58,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:53:58,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:53:58,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:53:58,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:53:58,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:53:58,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:53:58,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 22:53:58,906 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:53:58,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:53:58,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:53:58,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:53:58,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:53:58,907 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:53:58,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:53:58,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:53:58,907 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:53:58,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:53:58,908 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:53:58,908 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 22:53:58,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:53:58,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:53:58,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:53:58,908 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 22:53:58,908 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 22:53:58,908 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 22:53:58,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:53:58,909 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 22:53:58,909 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:53:58,909 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:53:58,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:53:58,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:53:58,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:53:58,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:53:58,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:53:58,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:53:58,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:53:58,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:53:58,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:53:58,910 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_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 [2021-12-06 22:53:59,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:53:59,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:53:59,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:53:59,107 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:53:59,108 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:53:59,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2021-12-06 22:53:59,150 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/data/af70dbe10/660988cc90e2406192579d25797f9d5b/FLAGb296462be [2021-12-06 22:53:59,593 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:53:59,593 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2021-12-06 22:53:59,605 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/data/af70dbe10/660988cc90e2406192579d25797f9d5b/FLAGb296462be [2021-12-06 22:53:59,615 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/data/af70dbe10/660988cc90e2406192579d25797f9d5b [2021-12-06 22:53:59,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:53:59,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:53:59,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:53:59,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:53:59,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:53:59,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:53:59" (1/1) ... [2021-12-06 22:53:59,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@344c4154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:53:59, skipping insertion in model container [2021-12-06 22:53:59,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:53:59" (1/1) ... [2021-12-06 22:53:59,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:53:59,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:53:59,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:53:59,975 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) [2021-12-06 22:53:59,979 INFO L158 Benchmark]: Toolchain (without parser) took 360.15ms. Allocated memory is still 104.9MB. Free memory was 68.7MB in the beginning and 77.3MB in the end (delta: -8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 22:53:59,980 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 104.9MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:53:59,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 358.23ms. Allocated memory is still 104.9MB. Free memory was 68.6MB in the beginning and 77.3MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 22:53:59,983 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 104.9MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 358.23ms. Allocated memory is still 104.9MB. Free memory was 68.6MB in the beginning and 77.3MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. 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_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:54:01,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:54:01,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:54:01,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:54:01,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:54:01,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:54:01,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:54:01,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:54:01,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:54:01,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:54:01,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:54:01,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:54:01,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:54:01,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:54:01,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:54:01,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:54:01,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:54:01,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:54:01,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:54:01,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:54:01,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:54:01,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:54:01,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:54:01,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:54:01,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:54:01,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:54:01,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:54:01,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:54:01,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:54:01,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:54:01,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:54:01,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:54:01,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:54:01,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:54:01,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:54:01,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:54:01,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:54:01,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:54:01,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:54:01,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:54:01,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:54:01,439 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-06 22:54:01,457 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:54:01,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:54:01,458 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:54:01,458 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:54:01,458 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:54:01,459 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:54:01,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:54:01,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:54:01,459 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:54:01,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:54:01,460 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:54:01,460 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 22:54:01,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:54:01,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:54:01,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:54:01,460 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 22:54:01,461 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 22:54:01,461 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 22:54:01,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:54:01,461 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 22:54:01,461 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 22:54:01,461 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 22:54:01,461 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:54:01,461 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:54:01,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:54:01,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:54:01,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:54:01,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:54:01,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:54:01,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:54:01,463 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 22:54:01,463 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 22:54:01,463 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:54:01,463 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 22:54:01,463 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_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 [2021-12-06 22:54:01,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:54:01,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:54:01,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:54:01,696 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:54:01,697 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:54:01,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2021-12-06 22:54:01,747 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/data/94d57313a/6347d6d485744040a4662790e8859dd4/FLAG79b49f926 [2021-12-06 22:54:02,224 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:54:02,224 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2021-12-06 22:54:02,235 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/data/94d57313a/6347d6d485744040a4662790e8859dd4/FLAG79b49f926 [2021-12-06 22:54:02,246 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/data/94d57313a/6347d6d485744040a4662790e8859dd4 [2021-12-06 22:54:02,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:54:02,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:54:02,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:54:02,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:54:02,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:54:02,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:54:02" (1/1) ... [2021-12-06 22:54:02,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b912cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:54:02, skipping insertion in model container [2021-12-06 22:54:02,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:54:02" (1/1) ... [2021-12-06 22:54:02,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:54:02,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:54:02,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:54:02,600 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-06 22:54:02,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:54:02,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:54:02,654 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:54:02,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:54:02,744 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:54:02,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:54:02 WrapperNode [2021-12-06 22:54:02,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:54:02,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:54:02,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:54:02,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:54:02,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:54:02" (1/1) ... [2021-12-06 22:54:02,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:54:02" (1/1) ... [2021-12-06 22:54:02,790 INFO L137 Inliner]: procedures = 175, calls = 119, calls flagged for inlining = 30, calls inlined = 15, statements flattened = 195 [2021-12-06 22:54:02,790 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:54:02,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:54:02,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:54:02,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:54:02,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:54:02" (1/1) ... [2021-12-06 22:54:02,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:54:02" (1/1) ... [2021-12-06 22:54:02,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:54:02" (1/1) ... [2021-12-06 22:54:02,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:54:02" (1/1) ... [2021-12-06 22:54:02,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:54:02" (1/1) ... [2021-12-06 22:54:02,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:54:02" (1/1) ... [2021-12-06 22:54:02,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:54:02" (1/1) ... [2021-12-06 22:54:02,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:54:02,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:54:02,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:54:02,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:54:02,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:54:02" (1/1) ... [2021-12-06 22:54:02,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:54:02,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:54:02,850 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:54:02,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:54:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 22:54:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-12-06 22:54:02,888 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-12-06 22:54:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-12-06 22:54:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-12-06 22:54:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 22:54:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 22:54:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 22:54:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:54:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2021-12-06 22:54:02,890 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2021-12-06 22:54:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 22:54:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 22:54:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 22:54:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 22:54:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 22:54:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 22:54:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-12-06 22:54:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-12-06 22:54:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-06 22:54:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-06 22:54:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:54:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:54:03,002 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:54:03,004 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:54:03,516 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:54:03,524 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:54:03,525 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 22:54:03,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:54:03 BoogieIcfgContainer [2021-12-06 22:54:03,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:54:03,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:54:03,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:54:03,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:54:03,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:54:02" (1/3) ... [2021-12-06 22:54:03,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b0eedd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:54:03, skipping insertion in model container [2021-12-06 22:54:03,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:54:02" (2/3) ... [2021-12-06 22:54:03,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b0eedd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:54:03, skipping insertion in model container [2021-12-06 22:54:03,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:54:03" (3/3) ... [2021-12-06 22:54:03,535 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test23_2.i [2021-12-06 22:54:03,540 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:54:03,540 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 79 error locations. [2021-12-06 22:54:03,576 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:54:03,581 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 [2021-12-06 22:54:03,581 INFO L340 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2021-12-06 22:54:03,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 204 states, 110 states have (on average 1.8454545454545455) internal successors, (203), 189 states have internal predecessors, (203), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 22:54:03,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 22:54:03,600 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:03,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:54:03,601 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)] === [2021-12-06 22:54:03,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:03,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1281397623, now seen corresponding path program 1 times [2021-12-06 22:54:03,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:03,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762422193] [2021-12-06 22:54:03,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:03,615 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:03,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:03,616 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:03,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 22:54:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:03,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:54:03,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:03,765 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 [2021-12-06 22:54:03,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:03,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:03,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:03,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762422193] [2021-12-06 22:54:03,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762422193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:03,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:03,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:54:03,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048598617] [2021-12-06 22:54:03,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:03,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:54:03,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:03,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:54:03,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:54:03,849 INFO L87 Difference]: Start difference. First operand has 204 states, 110 states have (on average 1.8454545454545455) internal successors, (203), 189 states have internal predecessors, (203), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:54:04,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:04,548 INFO L93 Difference]: Finished difference Result 231 states and 247 transitions. [2021-12-06 22:54:04,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:54:04,550 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 [2021-12-06 22:54:04,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:04,557 INFO L225 Difference]: With dead ends: 231 [2021-12-06 22:54:04,557 INFO L226 Difference]: Without dead ends: 227 [2021-12-06 22:54:04,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:54:04,561 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 28 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:04,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 839 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 22:54:04,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-12-06 22:54:04,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 211. [2021-12-06 22:54:04,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 116 states have (on average 1.793103448275862) internal successors, (208), 194 states have internal predecessors, (208), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2021-12-06 22:54:04,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 227 transitions. [2021-12-06 22:54:04,598 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 227 transitions. Word has length 12 [2021-12-06 22:54:04,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:04,598 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 227 transitions. [2021-12-06 22:54:04,598 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) [2021-12-06 22:54:04,598 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 227 transitions. [2021-12-06 22:54:04,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 22:54:04,599 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:04,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:54:04,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:54:04,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:04,801 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)] === [2021-12-06 22:54:04,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:04,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1281397624, now seen corresponding path program 1 times [2021-12-06 22:54:04,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:04,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621706816] [2021-12-06 22:54:04,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:04,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:04,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:04,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:04,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 22:54:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:04,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 22:54:04,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:04,907 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 [2021-12-06 22:54:04,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:04,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:04,987 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:04,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621706816] [2021-12-06 22:54:04,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621706816] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:04,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:04,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:54:04,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125486820] [2021-12-06 22:54:04,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:04,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:54:04,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:04,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:54:04,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:54:04,990 INFO L87 Difference]: Start difference. First operand 211 states and 227 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:54:05,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:05,694 INFO L93 Difference]: Finished difference Result 236 states and 251 transitions. [2021-12-06 22:54:05,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:54:05,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-06 22:54:05,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:05,696 INFO L225 Difference]: With dead ends: 236 [2021-12-06 22:54:05,696 INFO L226 Difference]: Without dead ends: 236 [2021-12-06 22:54:05,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:54:05,697 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 35 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:05,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 1153 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:54:05,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-12-06 22:54:05,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 211. [2021-12-06 22:54:05,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 116 states have (on average 1.7758620689655173) internal successors, (206), 194 states have internal predecessors, (206), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2021-12-06 22:54:05,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 225 transitions. [2021-12-06 22:54:05,710 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 225 transitions. Word has length 12 [2021-12-06 22:54:05,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:05,710 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 225 transitions. [2021-12-06 22:54:05,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:54:05,710 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 225 transitions. [2021-12-06 22:54:05,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 22:54:05,711 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:05,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:54:05,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 22:54:05,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:05,912 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)] === [2021-12-06 22:54:05,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:05,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1270759338, now seen corresponding path program 1 times [2021-12-06 22:54:05,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:05,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012836760] [2021-12-06 22:54:05,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:05,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:05,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:05,919 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:05,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 22:54:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:05,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:54:05,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:06,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:06,035 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:06,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012836760] [2021-12-06 22:54:06,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012836760] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:06,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:06,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:54:06,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327744182] [2021-12-06 22:54:06,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:06,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:54:06,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:06,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:54:06,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:54:06,036 INFO L87 Difference]: Start difference. First operand 211 states and 225 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:54:06,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:06,060 INFO L93 Difference]: Finished difference Result 223 states and 237 transitions. [2021-12-06 22:54:06,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:54:06,061 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 [2021-12-06 22:54:06,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:06,062 INFO L225 Difference]: With dead ends: 223 [2021-12-06 22:54:06,062 INFO L226 Difference]: Without dead ends: 223 [2021-12-06 22:54:06,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:54:06,063 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 20 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 838 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 [2021-12-06 22:54:06,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 838 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:54:06,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-12-06 22:54:06,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 202. [2021-12-06 22:54:06,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 112 states have (on average 1.7678571428571428) internal successors, (198), 186 states have internal predecessors, (198), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-06 22:54:06,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 215 transitions. [2021-12-06 22:54:06,073 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 215 transitions. Word has length 12 [2021-12-06 22:54:06,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:06,074 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 215 transitions. [2021-12-06 22:54:06,074 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) [2021-12-06 22:54:06,074 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 215 transitions. [2021-12-06 22:54:06,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 22:54:06,074 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:06,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:54:06,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 22:54:06,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:06,276 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:06,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:06,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1281312215, now seen corresponding path program 1 times [2021-12-06 22:54:06,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:06,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064617560] [2021-12-06 22:54:06,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:06,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:06,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:06,282 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:06,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 22:54:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:06,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:54:06,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:06,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:06,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:06,416 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:06,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064617560] [2021-12-06 22:54:06,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064617560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:06,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:06,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:54:06,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546746050] [2021-12-06 22:54:06,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:06,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:54:06,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:06,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:54:06,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:54:06,417 INFO L87 Difference]: Start difference. First operand 202 states and 215 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:54:06,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:06,449 INFO L93 Difference]: Finished difference Result 223 states and 236 transitions. [2021-12-06 22:54:06,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:54:06,449 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 [2021-12-06 22:54:06,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:06,451 INFO L225 Difference]: With dead ends: 223 [2021-12-06 22:54:06,451 INFO L226 Difference]: Without dead ends: 223 [2021-12-06 22:54:06,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:54:06,452 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 127 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 772 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 [2021-12-06 22:54:06,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 772 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:54:06,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-12-06 22:54:06,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 202. [2021-12-06 22:54:06,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 112 states have (on average 1.7589285714285714) internal successors, (197), 186 states have internal predecessors, (197), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-06 22:54:06,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 214 transitions. [2021-12-06 22:54:06,460 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 214 transitions. Word has length 12 [2021-12-06 22:54:06,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:06,460 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 214 transitions. [2021-12-06 22:54:06,461 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) [2021-12-06 22:54:06,461 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 214 transitions. [2021-12-06 22:54:06,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 22:54:06,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:06,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:54:06,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 22:54:06,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:06,662 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:06,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:06,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1270844746, now seen corresponding path program 1 times [2021-12-06 22:54:06,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:06,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800914987] [2021-12-06 22:54:06,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:06,664 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:06,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:06,670 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:06,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 22:54:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:06,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:54:06,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:06,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:06,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:06,780 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:06,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1800914987] [2021-12-06 22:54:06,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1800914987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:06,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:06,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:54:06,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297460430] [2021-12-06 22:54:06,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:06,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:54:06,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:06,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:54:06,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:54:06,781 INFO L87 Difference]: Start difference. First operand 202 states and 214 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:54:06,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:06,813 INFO L93 Difference]: Finished difference Result 207 states and 218 transitions. [2021-12-06 22:54:06,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:54:06,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-06 22:54:06,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:06,815 INFO L225 Difference]: With dead ends: 207 [2021-12-06 22:54:06,815 INFO L226 Difference]: Without dead ends: 207 [2021-12-06 22:54:06,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:54:06,816 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 110 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:06,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 720 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:54:06,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-06 22:54:06,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 204. [2021-12-06 22:54:06,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 114 states have (on average 1.7456140350877194) internal successors, (199), 188 states have internal predecessors, (199), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-06 22:54:06,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 216 transitions. [2021-12-06 22:54:06,826 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 216 transitions. Word has length 12 [2021-12-06 22:54:06,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:06,826 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 216 transitions. [2021-12-06 22:54:06,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:54:06,826 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 216 transitions. [2021-12-06 22:54:06,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 22:54:06,827 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:06,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:54:06,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-06 22:54:07,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:07,029 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)] === [2021-12-06 22:54:07,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:07,030 INFO L85 PathProgramCache]: Analyzing trace with hash -741461350, now seen corresponding path program 1 times [2021-12-06 22:54:07,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:07,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005023695] [2021-12-06 22:54:07,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:07,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:07,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:07,031 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:07,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 22:54:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:07,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:54:07,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:07,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:07,097 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:07,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005023695] [2021-12-06 22:54:07,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005023695] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:07,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:07,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:54:07,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501540165] [2021-12-06 22:54:07,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:07,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:54:07,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:07,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:54:07,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:54:07,098 INFO L87 Difference]: Start difference. First operand 204 states and 216 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:54:07,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:07,373 INFO L93 Difference]: Finished difference Result 216 states and 230 transitions. [2021-12-06 22:54:07,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:54:07,373 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 [2021-12-06 22:54:07,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:07,375 INFO L225 Difference]: With dead ends: 216 [2021-12-06 22:54:07,375 INFO L226 Difference]: Without dead ends: 208 [2021-12-06 22:54:07,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:54:07,376 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 51 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:07,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 396 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:54:07,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-12-06 22:54:07,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 198. [2021-12-06 22:54:07,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 109 states have (on average 1.7706422018348624) internal successors, (193), 183 states have internal predecessors, (193), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 22:54:07,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 209 transitions. [2021-12-06 22:54:07,384 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 209 transitions. Word has length 13 [2021-12-06 22:54:07,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:07,384 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 209 transitions. [2021-12-06 22:54:07,385 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) [2021-12-06 22:54:07,385 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 209 transitions. [2021-12-06 22:54:07,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 22:54:07,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:07,385 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:54:07,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 22:54:07,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:07,587 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:07,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:07,588 INFO L85 PathProgramCache]: Analyzing trace with hash 980413121, now seen corresponding path program 1 times [2021-12-06 22:54:07,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:07,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686254895] [2021-12-06 22:54:07,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:07,590 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:07,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:07,592 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:07,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 22:54:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:07,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 22:54:07,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:07,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 22:54:07,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:07,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:07,888 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:07,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686254895] [2021-12-06 22:54:07,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686254895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:07,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:07,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:54:07,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913650679] [2021-12-06 22:54:07,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:07,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:54:07,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:07,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:54:07,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:54:07,890 INFO L87 Difference]: Start difference. First operand 198 states and 209 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:54:10,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:10,687 INFO L93 Difference]: Finished difference Result 208 states and 222 transitions. [2021-12-06 22:54:10,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:54:10,687 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2021-12-06 22:54:10,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:10,688 INFO L225 Difference]: With dead ends: 208 [2021-12-06 22:54:10,688 INFO L226 Difference]: Without dead ends: 208 [2021-12-06 22:54:10,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=38, Invalid=93, Unknown=1, NotChecked=0, Total=132 [2021-12-06 22:54:10,689 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 58 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:10,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 576 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 490 Invalid, 0 Unknown, 113 Unchecked, 0.7s Time] [2021-12-06 22:54:10,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-12-06 22:54:10,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 197. [2021-12-06 22:54:10,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 109 states have (on average 1.761467889908257) internal successors, (192), 182 states have internal predecessors, (192), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 22:54:10,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 208 transitions. [2021-12-06 22:54:10,694 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 208 transitions. Word has length 16 [2021-12-06 22:54:10,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:10,694 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 208 transitions. [2021-12-06 22:54:10,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:54:10,694 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 208 transitions. [2021-12-06 22:54:10,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 22:54:10,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:10,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:54:10,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 22:54:10,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:10,896 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:10,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:10,896 INFO L85 PathProgramCache]: Analyzing trace with hash 980413120, now seen corresponding path program 1 times [2021-12-06 22:54:10,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:10,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654738977] [2021-12-06 22:54:10,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:10,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:10,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:10,897 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:10,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 22:54:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:10,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 22:54:10,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:11,031 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 22:54:11,031 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 [2021-12-06 22:54:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:11,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:11,070 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:11,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654738977] [2021-12-06 22:54:11,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654738977] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:11,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:11,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:54:11,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575826250] [2021-12-06 22:54:11,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:11,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:54:11,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:11,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:54:11,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:54:11,071 INFO L87 Difference]: Start difference. First operand 197 states and 208 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:54:11,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:11,595 INFO L93 Difference]: Finished difference Result 249 states and 263 transitions. [2021-12-06 22:54:11,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:54:11,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-12-06 22:54:11,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:11,597 INFO L225 Difference]: With dead ends: 249 [2021-12-06 22:54:11,598 INFO L226 Difference]: Without dead ends: 249 [2021-12-06 22:54:11,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:54:11,599 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 199 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:11,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 538 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 366 Invalid, 0 Unknown, 114 Unchecked, 0.5s Time] [2021-12-06 22:54:11,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-12-06 22:54:11,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 207. [2021-12-06 22:54:11,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 118 states have (on average 1.7457627118644068) internal successors, (206), 191 states have internal predecessors, (206), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-06 22:54:11,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 224 transitions. [2021-12-06 22:54:11,608 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 224 transitions. Word has length 16 [2021-12-06 22:54:11,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:11,608 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 224 transitions. [2021-12-06 22:54:11,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:54:11,608 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 224 transitions. [2021-12-06 22:54:11,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 22:54:11,609 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:11,609 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] [2021-12-06 22:54:11,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 22:54:11,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:11,810 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:11,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:11,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1929045948, now seen corresponding path program 1 times [2021-12-06 22:54:11,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:11,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237211114] [2021-12-06 22:54:11,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:11,813 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:11,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:11,816 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:11,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 22:54:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:11,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:54:11,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:11,912 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 [2021-12-06 22:54:11,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:11,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:11,938 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:11,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237211114] [2021-12-06 22:54:11,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237211114] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:11,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:11,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:54:11,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214765761] [2021-12-06 22:54:11,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:11,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:54:11,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:11,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:54:11,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:54:11,939 INFO L87 Difference]: Start difference. First operand 207 states and 224 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:54:12,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:12,442 INFO L93 Difference]: Finished difference Result 262 states and 286 transitions. [2021-12-06 22:54:12,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:54:12,443 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 [2021-12-06 22:54:12,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:12,444 INFO L225 Difference]: With dead ends: 262 [2021-12-06 22:54:12,444 INFO L226 Difference]: Without dead ends: 262 [2021-12-06 22:54:12,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:54:12,445 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 69 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:12,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 643 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:54:12,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-12-06 22:54:12,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 234. [2021-12-06 22:54:12,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 147 states have (on average 1.7687074829931972) internal successors, (260), 218 states have internal predecessors, (260), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-06 22:54:12,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 278 transitions. [2021-12-06 22:54:12,451 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 278 transitions. Word has length 25 [2021-12-06 22:54:12,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:12,451 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 278 transitions. [2021-12-06 22:54:12,452 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) [2021-12-06 22:54:12,452 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 278 transitions. [2021-12-06 22:54:12,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 22:54:12,452 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:12,452 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] [2021-12-06 22:54:12,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 22:54:12,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:12,654 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:12,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:12,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1929045947, now seen corresponding path program 1 times [2021-12-06 22:54:12,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:12,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134389576] [2021-12-06 22:54:12,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:12,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:12,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:12,658 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:12,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 22:54:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:12,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 22:54:12,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:12,776 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 [2021-12-06 22:54:12,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:12,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:12,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:12,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134389576] [2021-12-06 22:54:12,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134389576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:12,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:12,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:54:12,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513549781] [2021-12-06 22:54:12,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:12,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:54:12,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:12,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:54:12,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:54:12,828 INFO L87 Difference]: Start difference. First operand 234 states and 278 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:54:13,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:13,517 INFO L93 Difference]: Finished difference Result 294 states and 321 transitions. [2021-12-06 22:54:13,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:54:13,517 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 [2021-12-06 22:54:13,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:13,519 INFO L225 Difference]: With dead ends: 294 [2021-12-06 22:54:13,519 INFO L226 Difference]: Without dead ends: 294 [2021-12-06 22:54:13,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:54:13,520 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 103 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:13,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 641 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:54:13,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-12-06 22:54:13,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 236. [2021-12-06 22:54:13,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 150 states have (on average 1.7466666666666666) internal successors, (262), 219 states have internal predecessors, (262), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 22:54:13,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 283 transitions. [2021-12-06 22:54:13,526 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 283 transitions. Word has length 25 [2021-12-06 22:54:13,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:13,526 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 283 transitions. [2021-12-06 22:54:13,526 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) [2021-12-06 22:54:13,527 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 283 transitions. [2021-12-06 22:54:13,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 22:54:13,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:13,527 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] [2021-12-06 22:54:13,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-06 22:54:13,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:13,729 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)] === [2021-12-06 22:54:13,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:13,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1612783879, now seen corresponding path program 1 times [2021-12-06 22:54:13,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:13,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878457049] [2021-12-06 22:54:13,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:13,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:13,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:13,735 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:13,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 22:54:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:13,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 22:54:13,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:13,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:13,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:13,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:13,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878457049] [2021-12-06 22:54:13,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878457049] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:13,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:13,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:54:13,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615606012] [2021-12-06 22:54:13,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:13,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:54:13,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:13,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:54:13,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:54:13,883 INFO L87 Difference]: Start difference. First operand 236 states and 283 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:54:13,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:13,950 INFO L93 Difference]: Finished difference Result 236 states and 282 transitions. [2021-12-06 22:54:13,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:54:13,951 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 [2021-12-06 22:54:13,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:13,952 INFO L225 Difference]: With dead ends: 236 [2021-12-06 22:54:13,952 INFO L226 Difference]: Without dead ends: 236 [2021-12-06 22:54:13,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:54:13,953 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 118 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 826 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 [2021-12-06 22:54:13,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 826 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:54:13,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-12-06 22:54:13,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2021-12-06 22:54:13,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 150 states have (on average 1.74) internal successors, (261), 219 states have internal predecessors, (261), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 22:54:13,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 282 transitions. [2021-12-06 22:54:13,959 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 282 transitions. Word has length 27 [2021-12-06 22:54:13,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:13,959 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 282 transitions. [2021-12-06 22:54:13,959 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) [2021-12-06 22:54:13,959 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 282 transitions. [2021-12-06 22:54:13,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 22:54:13,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:13,960 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] [2021-12-06 22:54:13,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-06 22:54:14,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:14,161 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:14,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:14,161 INFO L85 PathProgramCache]: Analyzing trace with hash -405984592, now seen corresponding path program 1 times [2021-12-06 22:54:14,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:14,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40391125] [2021-12-06 22:54:14,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:14,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:14,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:14,162 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:14,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 22:54:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:14,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 22:54:14,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:14,296 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 [2021-12-06 22:54:14,362 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 22:54:14,362 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 [2021-12-06 22:54:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:14,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:14,399 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:14,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40391125] [2021-12-06 22:54:14,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40391125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:14,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:14,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:54:14,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016922460] [2021-12-06 22:54:14,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:14,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:54:14,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:14,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:54:14,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:54:14,401 INFO L87 Difference]: Start difference. First operand 236 states and 282 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:54:14,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:14,919 INFO L93 Difference]: Finished difference Result 330 states and 383 transitions. [2021-12-06 22:54:14,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:54:14,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2021-12-06 22:54:14,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:14,922 INFO L225 Difference]: With dead ends: 330 [2021-12-06 22:54:14,922 INFO L226 Difference]: Without dead ends: 330 [2021-12-06 22:54:14,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:54:14,923 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 224 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 132 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:14,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 517 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 320 Invalid, 0 Unknown, 132 Unchecked, 0.5s Time] [2021-12-06 22:54:14,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-12-06 22:54:14,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 249. [2021-12-06 22:54:14,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 166 states have (on average 1.6686746987951808) internal successors, (277), 232 states have internal predecessors, (277), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 22:54:14,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 298 transitions. [2021-12-06 22:54:14,932 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 298 transitions. Word has length 33 [2021-12-06 22:54:14,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:14,932 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 298 transitions. [2021-12-06 22:54:14,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:54:14,932 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 298 transitions. [2021-12-06 22:54:14,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 22:54:14,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:14,933 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] [2021-12-06 22:54:14,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-06 22:54:15,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:15,134 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:15,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:15,135 INFO L85 PathProgramCache]: Analyzing trace with hash -405984591, now seen corresponding path program 1 times [2021-12-06 22:54:15,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:15,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090853251] [2021-12-06 22:54:15,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:15,138 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:15,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:15,140 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:15,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 22:54:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:15,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 22:54:15,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:15,317 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 [2021-12-06 22:54:15,323 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 [2021-12-06 22:54:15,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:15,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 22:54:15,407 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:54:15,407 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 21 treesize of output 21 [2021-12-06 22:54:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:15,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:15,473 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:15,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090853251] [2021-12-06 22:54:15,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090853251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:15,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:15,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:54:15,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075906368] [2021-12-06 22:54:15,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:15,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:54:15,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:15,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:54:15,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:54:15,474 INFO L87 Difference]: Start difference. First operand 249 states and 298 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:54:16,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:16,327 INFO L93 Difference]: Finished difference Result 326 states and 363 transitions. [2021-12-06 22:54:16,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:54:16,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2021-12-06 22:54:16,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:16,329 INFO L225 Difference]: With dead ends: 326 [2021-12-06 22:54:16,330 INFO L226 Difference]: Without dead ends: 326 [2021-12-06 22:54:16,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:54:16,330 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 208 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:16,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 564 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 508 Invalid, 0 Unknown, 169 Unchecked, 0.8s Time] [2021-12-06 22:54:16,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-12-06 22:54:16,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 249. [2021-12-06 22:54:16,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 166 states have (on average 1.6385542168674698) internal successors, (272), 232 states have internal predecessors, (272), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 22:54:16,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 293 transitions. [2021-12-06 22:54:16,339 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 293 transitions. Word has length 33 [2021-12-06 22:54:16,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:16,340 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 293 transitions. [2021-12-06 22:54:16,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:54:16,340 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 293 transitions. [2021-12-06 22:54:16,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 22:54:16,341 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:16,341 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] [2021-12-06 22:54:16,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-12-06 22:54:16,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:16,541 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:16,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:16,542 INFO L85 PathProgramCache]: Analyzing trace with hash -60324907, now seen corresponding path program 1 times [2021-12-06 22:54:16,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:16,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138674759] [2021-12-06 22:54:16,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:16,542 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:16,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:16,543 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:16,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 22:54:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:16,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:54:16,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:16,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:16,980 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:16,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138674759] [2021-12-06 22:54:16,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138674759] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:16,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:16,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:54:16,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936734682] [2021-12-06 22:54:16,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:16,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:54:16,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:16,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:54:16,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:54:16,981 INFO L87 Difference]: Start difference. First operand 249 states and 293 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:54:16,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:16,990 INFO L93 Difference]: Finished difference Result 269 states and 314 transitions. [2021-12-06 22:54:16,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:54:16,991 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-12-06 22:54:16,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:16,993 INFO L225 Difference]: With dead ends: 269 [2021-12-06 22:54:16,993 INFO L226 Difference]: Without dead ends: 269 [2021-12-06 22:54:16,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:54:16,994 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 42 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:16,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 605 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2021-12-06 22:54:16,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-12-06 22:54:17,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 266. [2021-12-06 22:54:17,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 182 states have (on average 1.5934065934065933) internal successors, (290), 248 states have internal predecessors, (290), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 22:54:17,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 311 transitions. [2021-12-06 22:54:17,002 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 311 transitions. Word has length 36 [2021-12-06 22:54:17,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:17,003 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 311 transitions. [2021-12-06 22:54:17,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:54:17,003 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 311 transitions. [2021-12-06 22:54:17,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 22:54:17,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:17,004 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] [2021-12-06 22:54:17,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-06 22:54:17,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:17,205 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONARRAY_INDEX === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:17,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:17,206 INFO L85 PathProgramCache]: Analyzing trace with hash -60324935, now seen corresponding path program 1 times [2021-12-06 22:54:17,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:17,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281391794] [2021-12-06 22:54:17,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:17,208 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:17,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:17,210 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:17,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 22:54:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:17,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:54:17,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:17,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:17,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:17,397 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:17,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281391794] [2021-12-06 22:54:17,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281391794] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:17,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:17,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:54:17,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097561103] [2021-12-06 22:54:17,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:17,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:54:17,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:17,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:54:17,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:54:17,398 INFO L87 Difference]: Start difference. First operand 266 states and 311 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:54:17,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:17,416 INFO L93 Difference]: Finished difference Result 314 states and 363 transitions. [2021-12-06 22:54:17,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:54:17,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2021-12-06 22:54:17,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:17,418 INFO L225 Difference]: With dead ends: 314 [2021-12-06 22:54:17,419 INFO L226 Difference]: Without dead ends: 314 [2021-12-06 22:54:17,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:54:17,419 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 36 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 589 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 [2021-12-06 22:54:17,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 589 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:54:17,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-12-06 22:54:17,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 272. [2021-12-06 22:54:17,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 188 states have (on average 1.574468085106383) internal successors, (296), 254 states have internal predecessors, (296), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 22:54:17,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 317 transitions. [2021-12-06 22:54:17,425 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 317 transitions. Word has length 36 [2021-12-06 22:54:17,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:17,426 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 317 transitions. [2021-12-06 22:54:17,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:54:17,426 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 317 transitions. [2021-12-06 22:54:17,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 22:54:17,426 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:17,426 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] [2021-12-06 22:54:17,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-06 22:54:17,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:17,627 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:17,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:17,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1290023480, now seen corresponding path program 1 times [2021-12-06 22:54:17,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:17,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334467471] [2021-12-06 22:54:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:17,628 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:17,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:17,628 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:17,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 22:54:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:17,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:54:17,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:17,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:17,739 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:17,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334467471] [2021-12-06 22:54:17,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334467471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:17,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:17,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:54:17,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227335892] [2021-12-06 22:54:17,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:17,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:54:17,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:17,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:54:17,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:54:17,740 INFO L87 Difference]: Start difference. First operand 272 states and 317 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:54:17,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:17,757 INFO L93 Difference]: Finished difference Result 295 states and 342 transitions. [2021-12-06 22:54:17,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:54:17,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-12-06 22:54:17,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:17,759 INFO L225 Difference]: With dead ends: 295 [2021-12-06 22:54:17,759 INFO L226 Difference]: Without dead ends: 295 [2021-12-06 22:54:17,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:54:17,759 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 43 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:17,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 587 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:54:17,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-12-06 22:54:17,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 274. [2021-12-06 22:54:17,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 190 states have (on average 1.568421052631579) internal successors, (298), 256 states have internal predecessors, (298), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 22:54:17,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 319 transitions. [2021-12-06 22:54:17,765 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 319 transitions. Word has length 40 [2021-12-06 22:54:17,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:17,765 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 319 transitions. [2021-12-06 22:54:17,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:54:17,766 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 319 transitions. [2021-12-06 22:54:17,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 22:54:17,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:17,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:54:17,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-06 22:54:17,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:17,967 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:17,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:17,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1533058511, now seen corresponding path program 1 times [2021-12-06 22:54:17,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:17,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437360416] [2021-12-06 22:54:17,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:17,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:17,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:17,968 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:17,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-06 22:54:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:18,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 22:54:18,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:18,172 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:54:18,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-12-06 22:54:18,372 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-06 22:54:18,372 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 15 treesize of output 24 [2021-12-06 22:54:18,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2021-12-06 22:54:18,554 INFO L354 Elim1Store]: treesize reduction 4, result has 85.7 percent of original size [2021-12-06 22:54:18,554 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 31 treesize of output 49 [2021-12-06 22:54:21,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:21,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:21,662 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-06 22:54:21,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 33 [2021-12-06 22:54:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:22,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:22,040 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:22,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437360416] [2021-12-06 22:54:22,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437360416] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:22,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:22,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 22:54:22,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167158499] [2021-12-06 22:54:22,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:22,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 22:54:22,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:22,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 22:54:22,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:54:22,041 INFO L87 Difference]: Start difference. First operand 274 states and 319 transitions. Second operand has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:54:22,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:22,314 INFO L93 Difference]: Finished difference Result 284 states and 331 transitions. [2021-12-06 22:54:22,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 22:54:22,315 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2021-12-06 22:54:22,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:22,316 INFO L225 Difference]: With dead ends: 284 [2021-12-06 22:54:22,316 INFO L226 Difference]: Without dead ends: 284 [2021-12-06 22:54:22,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:54:22,317 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 27 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 414 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:22,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 1272 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 414 Unchecked, 0.2s Time] [2021-12-06 22:54:22,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-12-06 22:54:22,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 282. [2021-12-06 22:54:22,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 198 states have (on average 1.5555555555555556) internal successors, (308), 264 states have internal predecessors, (308), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 22:54:22,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 329 transitions. [2021-12-06 22:54:22,322 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 329 transitions. Word has length 42 [2021-12-06 22:54:22,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:22,322 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 329 transitions. [2021-12-06 22:54:22,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:54:22,322 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 329 transitions. [2021-12-06 22:54:22,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 22:54:22,323 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:22,323 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] [2021-12-06 22:54:22,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-06 22:54:22,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:22,523 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:22,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:22,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1533058512, now seen corresponding path program 1 times [2021-12-06 22:54:22,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:22,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119954885] [2021-12-06 22:54:22,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:22,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:22,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:22,525 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:22,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-06 22:54:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:22,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-06 22:54:22,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:22,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:22,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 22:54:22,774 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-06 22:54:22,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 23 [2021-12-06 22:54:22,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:22,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 22:54:23,063 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:54:23,063 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 12 treesize of output 14 [2021-12-06 22:54:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:23,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:23,201 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:23,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119954885] [2021-12-06 22:54:23,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119954885] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:23,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:23,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:54:23,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359578079] [2021-12-06 22:54:23,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:23,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:54:23,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:23,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:54:23,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:54:23,202 INFO L87 Difference]: Start difference. First operand 282 states and 329 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:54:24,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:24,271 INFO L93 Difference]: Finished difference Result 290 states and 336 transitions. [2021-12-06 22:54:24,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:54:24,271 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2021-12-06 22:54:24,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:24,273 INFO L225 Difference]: With dead ends: 290 [2021-12-06 22:54:24,273 INFO L226 Difference]: Without dead ends: 290 [2021-12-06 22:54:24,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:54:24,273 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 293 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 252 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:24,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 746 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 674 Invalid, 0 Unknown, 252 Unchecked, 0.9s Time] [2021-12-06 22:54:24,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-12-06 22:54:24,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 280. [2021-12-06 22:54:24,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 198 states have (on average 1.5404040404040404) internal successors, (305), 262 states have internal predecessors, (305), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 22:54:24,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 326 transitions. [2021-12-06 22:54:24,279 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 326 transitions. Word has length 42 [2021-12-06 22:54:24,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:24,279 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 326 transitions. [2021-12-06 22:54:24,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:54:24,279 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 326 transitions. [2021-12-06 22:54:24,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 22:54:24,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:24,279 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] [2021-12-06 22:54:24,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-06 22:54:24,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:24,480 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONARRAY_INDEX === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:24,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:24,482 INFO L85 PathProgramCache]: Analyzing trace with hash -974113632, now seen corresponding path program 1 times [2021-12-06 22:54:24,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:24,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700262469] [2021-12-06 22:54:24,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:24,484 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:24,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:24,486 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:24,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-06 22:54:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:24,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 22:54:24,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:24,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,795 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 27 treesize of output 36 [2021-12-06 22:54:24,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 50 [2021-12-06 22:54:24,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:24,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 50 [2021-12-06 22:54:24,930 INFO L354 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2021-12-06 22:54:24,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 50 [2021-12-06 22:54:24,947 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-12-06 22:54:24,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 14 [2021-12-06 22:54:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:24,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:24,970 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:24,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700262469] [2021-12-06 22:54:24,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700262469] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:24,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:24,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:54:24,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642000384] [2021-12-06 22:54:24,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:24,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:54:24,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:24,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:54:24,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:54:24,971 INFO L87 Difference]: Start difference. First operand 280 states and 326 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:54:25,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:25,233 INFO L93 Difference]: Finished difference Result 288 states and 334 transitions. [2021-12-06 22:54:25,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:54:25,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2021-12-06 22:54:25,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:25,235 INFO L225 Difference]: With dead ends: 288 [2021-12-06 22:54:25,235 INFO L226 Difference]: Without dead ends: 288 [2021-12-06 22:54:25,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:54:25,236 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 30 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:25,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 863 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 16 Unchecked, 0.2s Time] [2021-12-06 22:54:25,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-12-06 22:54:25,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 279. [2021-12-06 22:54:25,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 198 states have (on average 1.5303030303030303) internal successors, (303), 261 states have internal predecessors, (303), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 22:54:25,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 324 transitions. [2021-12-06 22:54:25,241 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 324 transitions. Word has length 43 [2021-12-06 22:54:25,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:25,242 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 324 transitions. [2021-12-06 22:54:25,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:54:25,242 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 324 transitions. [2021-12-06 22:54:25,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 22:54:25,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:25,242 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] [2021-12-06 22:54:25,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-12-06 22:54:25,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:25,443 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:25,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:25,444 INFO L85 PathProgramCache]: Analyzing trace with hash 280193697, now seen corresponding path program 1 times [2021-12-06 22:54:25,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:25,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882500716] [2021-12-06 22:54:25,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:25,446 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:25,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:25,448 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:25,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-06 22:54:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:25,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:54:25,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:25,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:25,572 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:25,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882500716] [2021-12-06 22:54:25,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882500716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:25,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:25,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:54:25,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026681386] [2021-12-06 22:54:25,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:25,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:54:25,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:25,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:54:25,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:54:25,573 INFO L87 Difference]: Start difference. First operand 279 states and 324 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:54:25,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:25,588 INFO L93 Difference]: Finished difference Result 301 states and 345 transitions. [2021-12-06 22:54:25,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:54:25,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2021-12-06 22:54:25,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:25,589 INFO L225 Difference]: With dead ends: 301 [2021-12-06 22:54:25,589 INFO L226 Difference]: Without dead ends: 301 [2021-12-06 22:54:25,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:54:25,590 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 48 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:25,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 567 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:54:25,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-12-06 22:54:25,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 281. [2021-12-06 22:54:25,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 200 states have (on average 1.52) internal successors, (304), 263 states have internal predecessors, (304), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 22:54:25,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 325 transitions. [2021-12-06 22:54:25,595 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 325 transitions. Word has length 43 [2021-12-06 22:54:25,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:25,595 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 325 transitions. [2021-12-06 22:54:25,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:54:25,596 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 325 transitions. [2021-12-06 22:54:25,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 22:54:25,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:25,596 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, 1] [2021-12-06 22:54:25,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-12-06 22:54:25,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:25,797 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:25,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:25,798 INFO L85 PathProgramCache]: Analyzing trace with hash -132751331, now seen corresponding path program 1 times [2021-12-06 22:54:25,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:25,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338632807] [2021-12-06 22:54:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:25,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:25,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:25,803 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:25,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-06 22:54:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:25,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 22:54:25,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:25,973 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 [2021-12-06 22:54:26,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:26,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:26,027 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:26,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338632807] [2021-12-06 22:54:26,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338632807] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:26,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:26,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:54:26,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676749834] [2021-12-06 22:54:26,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:26,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:54:26,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:26,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:54:26,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:54:26,028 INFO L87 Difference]: Start difference. First operand 281 states and 325 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:54:26,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:26,719 INFO L93 Difference]: Finished difference Result 313 states and 342 transitions. [2021-12-06 22:54:26,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:54:26,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2021-12-06 22:54:26,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:26,721 INFO L225 Difference]: With dead ends: 313 [2021-12-06 22:54:26,721 INFO L226 Difference]: Without dead ends: 313 [2021-12-06 22:54:26,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:54:26,722 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 126 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:26,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 820 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:54:26,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-12-06 22:54:26,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 280. [2021-12-06 22:54:26,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 200 states have (on average 1.505) internal successors, (301), 262 states have internal predecessors, (301), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 22:54:26,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 322 transitions. [2021-12-06 22:54:26,727 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 322 transitions. Word has length 44 [2021-12-06 22:54:26,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:26,727 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 322 transitions. [2021-12-06 22:54:26,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:54:26,728 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 322 transitions. [2021-12-06 22:54:26,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 22:54:26,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:26,728 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, 1] [2021-12-06 22:54:26,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-12-06 22:54:26,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:26,929 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:26,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:26,929 INFO L85 PathProgramCache]: Analyzing trace with hash -132751330, now seen corresponding path program 1 times [2021-12-06 22:54:26,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:26,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996862826] [2021-12-06 22:54:26,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:26,930 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:26,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:26,930 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:26,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-06 22:54:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:27,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 22:54:27,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:27,090 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 [2021-12-06 22:54:27,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:27,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:27,217 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:27,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996862826] [2021-12-06 22:54:27,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996862826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:27,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:27,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:54:27,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917987643] [2021-12-06 22:54:27,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:27,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:54:27,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:27,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:54:27,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:54:27,218 INFO L87 Difference]: Start difference. First operand 280 states and 322 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:54:28,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:28,090 INFO L93 Difference]: Finished difference Result 349 states and 385 transitions. [2021-12-06 22:54:28,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:54:28,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2021-12-06 22:54:28,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:28,092 INFO L225 Difference]: With dead ends: 349 [2021-12-06 22:54:28,092 INFO L226 Difference]: Without dead ends: 349 [2021-12-06 22:54:28,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:54:28,092 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 142 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:28,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 852 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:54:28,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-12-06 22:54:28,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 280. [2021-12-06 22:54:28,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 200 states have (on average 1.495) internal successors, (299), 262 states have internal predecessors, (299), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 22:54:28,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 320 transitions. [2021-12-06 22:54:28,098 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 320 transitions. Word has length 44 [2021-12-06 22:54:28,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:28,098 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 320 transitions. [2021-12-06 22:54:28,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:54:28,098 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 320 transitions. [2021-12-06 22:54:28,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 22:54:28,099 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:28,099 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, 1, 1] [2021-12-06 22:54:28,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-12-06 22:54:28,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:28,300 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting free_reportsErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:28,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:28,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1335876523, now seen corresponding path program 1 times [2021-12-06 22:54:28,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:28,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505548292] [2021-12-06 22:54:28,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:28,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:28,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:28,305 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:28,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-06 22:54:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:28,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-06 22:54:28,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:28,503 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 [2021-12-06 22:54:28,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:54:28,654 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-12-06 22:54:28,654 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 35 treesize of output 56 [2021-12-06 22:54:28,716 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 22:54:28,716 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 17 [2021-12-06 22:54:28,992 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-12-06 22:54:28,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 59 [2021-12-06 22:54:29,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2021-12-06 22:54:29,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2021-12-06 22:54:30,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:30,664 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 22:54:30,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 49 [2021-12-06 22:54:30,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-12-06 22:54:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:30,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:30,961 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:30,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505548292] [2021-12-06 22:54:30,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505548292] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:30,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:30,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-06 22:54:30,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335588974] [2021-12-06 22:54:30,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:30,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 22:54:30,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:30,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 22:54:30,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-12-06 22:54:30,963 INFO L87 Difference]: Start difference. First operand 280 states and 320 transitions. Second operand has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:54:31,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:31,709 INFO L93 Difference]: Finished difference Result 300 states and 343 transitions. [2021-12-06 22:54:31,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 22:54:31,710 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2021-12-06 22:54:31,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:31,711 INFO L225 Difference]: With dead ends: 300 [2021-12-06 22:54:31,711 INFO L226 Difference]: Without dead ends: 300 [2021-12-06 22:54:31,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:54:31,712 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 69 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 457 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:31,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 1350 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 415 Invalid, 0 Unknown, 457 Unchecked, 0.5s Time] [2021-12-06 22:54:31,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-12-06 22:54:31,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 289. [2021-12-06 22:54:31,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 207 states have (on average 1.497584541062802) internal successors, (310), 270 states have internal predecessors, (310), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 22:54:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 334 transitions. [2021-12-06 22:54:31,717 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 334 transitions. Word has length 45 [2021-12-06 22:54:31,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:31,717 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 334 transitions. [2021-12-06 22:54:31,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:54:31,717 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 334 transitions. [2021-12-06 22:54:31,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 22:54:31,717 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:31,717 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, 1, 1] [2021-12-06 22:54:31,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-12-06 22:54:31,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:31,918 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting free_reportsErr1REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:31,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:31,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1335876522, now seen corresponding path program 1 times [2021-12-06 22:54:31,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:31,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142417605] [2021-12-06 22:54:31,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:31,921 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:31,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:31,923 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:31,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-06 22:54:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:32,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 67 conjunts are in the unsatisfiable core [2021-12-06 22:54:32,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:32,176 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 [2021-12-06 22:54:32,184 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 [2021-12-06 22:54:32,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:54:32,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:54:32,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:32,581 INFO L354 Elim1Store]: treesize reduction 27, result has 32.5 percent of original size [2021-12-06 22:54:32,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 43 [2021-12-06 22:54:32,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:32,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 22:54:32,687 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 22:54:32,687 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 23 treesize of output 15 [2021-12-06 22:54:32,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-06 22:54:33,032 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-06 22:54:33,032 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 26 [2021-12-06 22:54:33,057 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-12-06 22:54:33,057 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 32 treesize of output 34 [2021-12-06 22:54:33,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 22:54:33,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-06 22:54:33,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 22:54:33,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-06 22:54:34,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:54:34,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-12-06 22:54:34,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:34,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:34,539 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:34,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142417605] [2021-12-06 22:54:34,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142417605] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:34,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:34,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-06 22:54:34,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418927187] [2021-12-06 22:54:34,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:34,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 22:54:34,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:34,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 22:54:34,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-12-06 22:54:34,540 INFO L87 Difference]: Start difference. First operand 289 states and 334 transitions. Second operand has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:54:35,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:35,106 INFO L93 Difference]: Finished difference Result 290 states and 334 transitions. [2021-12-06 22:54:35,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 22:54:35,106 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2021-12-06 22:54:35,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:35,108 INFO L225 Difference]: With dead ends: 290 [2021-12-06 22:54:35,108 INFO L226 Difference]: Without dead ends: 290 [2021-12-06 22:54:35,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:54:35,108 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 33 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 434 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:35,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 1120 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 139 Invalid, 0 Unknown, 434 Unchecked, 0.3s Time] [2021-12-06 22:54:35,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-12-06 22:54:35,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 289. [2021-12-06 22:54:35,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 207 states have (on average 1.4927536231884058) internal successors, (309), 270 states have internal predecessors, (309), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 22:54:35,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 333 transitions. [2021-12-06 22:54:35,113 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 333 transitions. Word has length 45 [2021-12-06 22:54:35,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:35,114 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 333 transitions. [2021-12-06 22:54:35,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:54:35,114 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 333 transitions. [2021-12-06 22:54:35,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 22:54:35,114 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:35,114 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, 1, 1, 1, 1] [2021-12-06 22:54:35,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-12-06 22:54:35,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:35,315 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting free_reportsErr2REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:35,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:35,317 INFO L85 PathProgramCache]: Analyzing trace with hash 417882070, now seen corresponding path program 1 times [2021-12-06 22:54:35,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:35,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341816847] [2021-12-06 22:54:35,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:35,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:35,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:35,321 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:35,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-06 22:54:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:35,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-06 22:54:35,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:35,709 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-06 22:54:35,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-12-06 22:54:36,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:54:36,408 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-06 22:54:36,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:54:36,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 22:54:36,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:54:36,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:36,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:36,995 INFO L354 Elim1Store]: treesize reduction 27, result has 32.5 percent of original size [2021-12-06 22:54:36,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 61 [2021-12-06 22:54:37,161 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:54:37,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2021-12-06 22:54:37,608 INFO L354 Elim1Store]: treesize reduction 13, result has 68.3 percent of original size [2021-12-06 22:54:37,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 61 [2021-12-06 22:54:38,042 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:54:38,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 45 [2021-12-06 22:54:38,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 22:54:38,176 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:54:38,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 45 [2021-12-06 22:54:38,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 22:54:38,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:54:39,392 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:54:39,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 30 [2021-12-06 22:54:39,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:39,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:39,646 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:39,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341816847] [2021-12-06 22:54:39,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341816847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:39,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:39,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-06 22:54:39,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705677128] [2021-12-06 22:54:39,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:39,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 22:54:39,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:39,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 22:54:39,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-12-06 22:54:39,648 INFO L87 Difference]: Start difference. First operand 289 states and 333 transitions. Second operand has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:54:40,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:40,064 INFO L93 Difference]: Finished difference Result 289 states and 332 transitions. [2021-12-06 22:54:40,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 22:54:40,065 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2021-12-06 22:54:40,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:40,066 INFO L225 Difference]: With dead ends: 289 [2021-12-06 22:54:40,066 INFO L226 Difference]: Without dead ends: 289 [2021-12-06 22:54:40,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2021-12-06 22:54:40,067 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 11 mSDsluCounter, 2234 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 875 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:40,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 2405 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 192 Invalid, 0 Unknown, 875 Unchecked, 0.3s Time] [2021-12-06 22:54:40,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-12-06 22:54:40,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-12-06 22:54:40,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 207 states have (on average 1.4879227053140096) internal successors, (308), 270 states have internal predecessors, (308), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 22:54:40,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 332 transitions. [2021-12-06 22:54:40,072 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 332 transitions. Word has length 47 [2021-12-06 22:54:40,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:40,072 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 332 transitions. [2021-12-06 22:54:40,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:54:40,072 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 332 transitions. [2021-12-06 22:54:40,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 22:54:40,072 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:40,073 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, 1, 1, 1, 1] [2021-12-06 22:54:40,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-12-06 22:54:40,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:40,273 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting free_reportsErr3REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:40,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:40,273 INFO L85 PathProgramCache]: Analyzing trace with hash 417882071, now seen corresponding path program 1 times [2021-12-06 22:54:40,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:40,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417004339] [2021-12-06 22:54:40,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:40,274 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:40,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:40,275 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:40,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-06 22:54:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:40,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 86 conjunts are in the unsatisfiable core [2021-12-06 22:54:40,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:40,557 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 [2021-12-06 22:54:40,657 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 22:54:40,657 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 26 treesize of output 33 [2021-12-06 22:54:40,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:54:40,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:54:41,039 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-06 22:54:41,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:54:41,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:41,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:54:41,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 22:54:41,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 22:54:41,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:41,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 22:54:41,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:41,494 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 22:54:41,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 44 [2021-12-06 22:54:41,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-06 22:54:41,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-12-06 22:54:42,124 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-06 22:54:42,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2021-12-06 22:54:42,177 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-06 22:54:42,177 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 34 treesize of output 36 [2021-12-06 22:54:42,911 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:54:42,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 61 [2021-12-06 22:54:42,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2021-12-06 22:54:43,822 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:54:43,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 61 [2021-12-06 22:54:43,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2021-12-06 22:54:45,171 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 22:54:45,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 31 [2021-12-06 22:54:45,177 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:54:45,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 26 [2021-12-06 22:54:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:45,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:45,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:45,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417004339] [2021-12-06 22:54:45,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417004339] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:45,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:45,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-06 22:54:45,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154542675] [2021-12-06 22:54:45,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:45,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 22:54:45,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:45,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 22:54:45,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2021-12-06 22:54:45,466 INFO L87 Difference]: Start difference. First operand 289 states and 332 transitions. Second operand has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:54:46,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:46,087 INFO L93 Difference]: Finished difference Result 289 states and 331 transitions. [2021-12-06 22:54:46,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 22:54:46,088 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2021-12-06 22:54:46,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:46,089 INFO L225 Difference]: With dead ends: 289 [2021-12-06 22:54:46,089 INFO L226 Difference]: Without dead ends: 289 [2021-12-06 22:54:46,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2021-12-06 22:54:46,090 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 12 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1114 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:46,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1960 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 268 Invalid, 0 Unknown, 1114 Unchecked, 0.4s Time] [2021-12-06 22:54:46,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-12-06 22:54:46,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-12-06 22:54:46,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 207 states have (on average 1.4830917874396135) internal successors, (307), 270 states have internal predecessors, (307), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 22:54:46,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 331 transitions. [2021-12-06 22:54:46,095 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 331 transitions. Word has length 47 [2021-12-06 22:54:46,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:46,095 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 331 transitions. [2021-12-06 22:54:46,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:54:46,095 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 331 transitions. [2021-12-06 22:54:46,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 22:54:46,095 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:46,095 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, 1, 1, 1, 1] [2021-12-06 22:54:46,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-12-06 22:54:46,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:46,296 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:46,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:46,296 INFO L85 PathProgramCache]: Analyzing trace with hash 870106982, now seen corresponding path program 1 times [2021-12-06 22:54:46,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:46,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953366920] [2021-12-06 22:54:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:46,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:46,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:46,297 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:46,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-12-06 22:54:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:46,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-06 22:54:46,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:46,665 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:54:46,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 20 [2021-12-06 22:54:46,810 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 22:54:46,810 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 14 treesize of output 19 [2021-12-06 22:54:46,946 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-12-06 22:54:46,946 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 32 treesize of output 49 [2021-12-06 22:54:47,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:54:47,565 INFO L354 Elim1Store]: treesize reduction 288, result has 10.8 percent of original size [2021-12-06 22:54:47,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 22:54:47,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 22:54:47,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 22:54:47,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 22:54:48,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 22:54:48,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:54:48,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:48,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:48,868 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:48,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953366920] [2021-12-06 22:54:48,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953366920] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:48,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:48,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-06 22:54:48,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381263215] [2021-12-06 22:54:48,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:48,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 22:54:48,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:48,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 22:54:48,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:54:48,869 INFO L87 Difference]: Start difference. First operand 289 states and 331 transitions. Second operand has 20 states, 17 states have (on average 2.411764705882353) internal successors, (41), 18 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:54:49,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:49,205 INFO L93 Difference]: Finished difference Result 302 states and 346 transitions. [2021-12-06 22:54:49,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 22:54:49,205 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.411764705882353) internal successors, (41), 18 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2021-12-06 22:54:49,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:49,206 INFO L225 Difference]: With dead ends: 302 [2021-12-06 22:54:49,206 INFO L226 Difference]: Without dead ends: 302 [2021-12-06 22:54:49,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2021-12-06 22:54:49,207 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 67 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 898 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:49,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 1596 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 213 Invalid, 0 Unknown, 898 Unchecked, 0.3s Time] [2021-12-06 22:54:49,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-12-06 22:54:49,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 295. [2021-12-06 22:54:49,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 213 states have (on average 1.4741784037558685) internal successors, (314), 276 states have internal predecessors, (314), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 22:54:49,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 338 transitions. [2021-12-06 22:54:49,214 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 338 transitions. Word has length 47 [2021-12-06 22:54:49,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:49,214 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 338 transitions. [2021-12-06 22:54:49,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.411764705882353) internal successors, (41), 18 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:54:49,214 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 338 transitions. [2021-12-06 22:54:49,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 22:54:49,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:49,215 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, 1, 1, 1, 1] [2021-12-06 22:54:49,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-12-06 22:54:49,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:49,416 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:49,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:49,417 INFO L85 PathProgramCache]: Analyzing trace with hash 870106983, now seen corresponding path program 1 times [2021-12-06 22:54:49,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:49,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101069604] [2021-12-06 22:54:49,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:49,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:49,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:49,420 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:49,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-12-06 22:54:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:50,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 74 conjunts are in the unsatisfiable core [2021-12-06 22:54:50,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:50,046 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 [2021-12-06 22:54:50,076 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 22:54:50,076 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 14 treesize of output 19 [2021-12-06 22:54:50,199 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:54:50,199 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 14 treesize of output 20 [2021-12-06 22:54:50,224 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 22:54:50,224 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 17 treesize of output 22 [2021-12-06 22:54:50,292 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 22:54:50,292 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 20 treesize of output 16 [2021-12-06 22:54:50,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-06 22:54:50,438 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:54:50,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2021-12-06 22:54:50,479 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 22:54:50,479 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 3 case distinctions, treesize of input 32 treesize of output 34 [2021-12-06 22:54:50,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:54:50,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:54:50,934 INFO L354 Elim1Store]: treesize reduction 288, result has 10.8 percent of original size [2021-12-06 22:54:50,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 22:54:50,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:50,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:50,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:50,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:50,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:50,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:50,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:50,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:50,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:50,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:50,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 22:54:51,115 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:54:51,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 22:54:51,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 22:54:51,146 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:54:51,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 22:54:51,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 22:54:51,295 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:54:51,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 22:54:51,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 22:54:51,323 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:54:51,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 22:54:51,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 22:54:51,505 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:54:51,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 22:54:51,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 22:54:51,539 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:54:51,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 22:54:51,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 22:54:51,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:51,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 22:54:51,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:51,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 22:54:52,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:54:52,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:54:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:52,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:52,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:52,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101069604] [2021-12-06 22:54:52,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101069604] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:52,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:52,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-12-06 22:54:52,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549355401] [2021-12-06 22:54:52,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:52,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 22:54:52,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:52,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 22:54:52,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2021-12-06 22:54:52,238 INFO L87 Difference]: Start difference. First operand 295 states and 338 transitions. Second operand has 22 states, 20 states have (on average 2.05) internal successors, (41), 18 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:54:53,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:53,170 INFO L93 Difference]: Finished difference Result 302 states and 345 transitions. [2021-12-06 22:54:53,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 22:54:53,171 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.05) internal successors, (41), 18 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2021-12-06 22:54:53,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:53,172 INFO L225 Difference]: With dead ends: 302 [2021-12-06 22:54:53,172 INFO L226 Difference]: Without dead ends: 302 [2021-12-06 22:54:53,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2021-12-06 22:54:53,173 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 76 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 614 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:53,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 1256 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 470 Invalid, 0 Unknown, 614 Unchecked, 0.6s Time] [2021-12-06 22:54:53,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-12-06 22:54:53,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 295. [2021-12-06 22:54:53,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 213 states have (on average 1.4694835680751173) internal successors, (313), 276 states have internal predecessors, (313), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 22:54:53,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 337 transitions. [2021-12-06 22:54:53,179 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 337 transitions. Word has length 47 [2021-12-06 22:54:53,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:53,180 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 337 transitions. [2021-12-06 22:54:53,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.05) internal successors, (41), 18 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:54:53,180 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 337 transitions. [2021-12-06 22:54:53,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 22:54:53,180 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:53,180 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, 1, 1, 1, 1, 1, 1] [2021-12-06 22:54:53,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-12-06 22:54:53,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:53,381 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:53,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:53,383 INFO L85 PathProgramCache]: Analyzing trace with hash -479935114, now seen corresponding path program 1 times [2021-12-06 22:54:53,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:53,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557487729] [2021-12-06 22:54:53,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:53,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:53,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:53,387 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:53,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-12-06 22:54:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:53,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:54:53,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:54:53,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:53,591 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:54:53,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557487729] [2021-12-06 22:54:53,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557487729] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:53,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:53,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:54:53,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637722979] [2021-12-06 22:54:53,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:53,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:54:53,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:54:53,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:54:53,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:54:53,592 INFO L87 Difference]: Start difference. First operand 295 states and 337 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:54:53,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:53,606 INFO L93 Difference]: Finished difference Result 312 states and 351 transitions. [2021-12-06 22:54:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:54:53,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2021-12-06 22:54:53,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:53,608 INFO L225 Difference]: With dead ends: 312 [2021-12-06 22:54:53,608 INFO L226 Difference]: Without dead ends: 312 [2021-12-06 22:54:53,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:54:53,609 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 78 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:53,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 559 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:54:53,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-12-06 22:54:53,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 293. [2021-12-06 22:54:53,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 211 states have (on average 1.4549763033175356) internal successors, (307), 274 states have internal predecessors, (307), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 22:54:53,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 331 transitions. [2021-12-06 22:54:53,613 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 331 transitions. Word has length 49 [2021-12-06 22:54:53,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:53,614 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 331 transitions. [2021-12-06 22:54:53,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:54:53,614 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 331 transitions. [2021-12-06 22:54:53,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 22:54:53,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:53,614 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, 1, 1, 1, 1, 1, 1] [2021-12-06 22:54:53,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-12-06 22:54:53,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:54:53,815 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:54:53,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:53,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1345808633, now seen corresponding path program 1 times [2021-12-06 22:54:53,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:54:53,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229683843] [2021-12-06 22:54:53,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:53,818 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:54:53,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:54:53,820 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:54:53,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-12-06 22:54:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:54,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 76 conjunts are in the unsatisfiable core [2021-12-06 22:54:54,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:54,482 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-06 22:54:54,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 50 [2021-12-06 22:54:54,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:54:54,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:54,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:54,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:54,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 60 [2021-12-06 22:54:55,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:55,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:55,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:55,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2021-12-06 22:54:55,426 INFO L354 Elim1Store]: treesize reduction 100, result has 36.3 percent of original size [2021-12-06 22:54:55,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 80 treesize of output 121 [2021-12-06 22:54:56,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 46 [2021-12-06 22:54:56,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:54:56,548 INFO L354 Elim1Store]: treesize reduction 288, result has 10.8 percent of original size [2021-12-06 22:54:56,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 22:54:56,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:56,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:56,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:56,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:56,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:56,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:56,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:56,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:56,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:56,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:56,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 89 [2021-12-06 22:54:57,137 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:54:57,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 22:54:57,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 22:54:57,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:57,170 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:54:57,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 68 [2021-12-06 22:54:57,452 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:54:57,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 22:54:57,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 22:54:57,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:57,503 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:54:57,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 66 [2021-12-06 22:54:57,819 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:54:57,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 22:54:57,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 22:54:57,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:57,884 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:54:57,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 68 [2021-12-06 22:54:58,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:58,211 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:54:58,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 68 [2021-12-06 22:54:58,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:58,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 22:54:59,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:55:00,262 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-12-06 22:55:00,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 48 [2021-12-06 22:55:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:55:00,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:55:00,830 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:55:00,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229683843] [2021-12-06 22:55:00,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229683843] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:55:00,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:55:00,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-12-06 22:55:00,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815990964] [2021-12-06 22:55:00,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:55:00,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 22:55:00,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:55:00,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 22:55:00,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:55:00,831 INFO L87 Difference]: Start difference. First operand 293 states and 331 transitions. Second operand has 24 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:55:01,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:55:01,275 INFO L93 Difference]: Finished difference Result 295 states and 334 transitions. [2021-12-06 22:55:01,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 22:55:01,275 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2021-12-06 22:55:01,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:55:01,276 INFO L225 Difference]: With dead ends: 295 [2021-12-06 22:55:01,276 INFO L226 Difference]: Without dead ends: 295 [2021-12-06 22:55:01,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2021-12-06 22:55:01,277 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 16 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1048 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:55:01,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 2009 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 213 Invalid, 0 Unknown, 1048 Unchecked, 0.3s Time] [2021-12-06 22:55:01,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-12-06 22:55:01,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2021-12-06 22:55:01,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 213 states have (on average 1.4553990610328638) internal successors, (310), 276 states have internal predecessors, (310), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 22:55:01,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 334 transitions. [2021-12-06 22:55:01,282 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 334 transitions. Word has length 49 [2021-12-06 22:55:01,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:55:01,282 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 334 transitions. [2021-12-06 22:55:01,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:55:01,282 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 334 transitions. [2021-12-06 22:55:01,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 22:55:01,282 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:55:01,282 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, 1, 1, 1, 1, 1, 1] [2021-12-06 22:55:01,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-12-06 22:55:01,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:55:01,483 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:55:01,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:55:01,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1345808632, now seen corresponding path program 1 times [2021-12-06 22:55:01,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:55:01,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334170427] [2021-12-06 22:55:01,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:55:01,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:55:01,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:55:01,489 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:55:01,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-12-06 22:55:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:02,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 108 conjunts are in the unsatisfiable core [2021-12-06 22:55:02,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:55:02,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:55:02,438 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-06 22:55:02,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 51 [2021-12-06 22:55:02,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:55:02,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:55:02,967 INFO L354 Elim1Store]: treesize reduction 57, result has 44.1 percent of original size [2021-12-06 22:55:02,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 86 [2021-12-06 22:55:03,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 22:55:03,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-06 22:55:03,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:03,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:03,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:03,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-12-06 22:55:03,481 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-06 22:55:03,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2021-12-06 22:55:03,516 INFO L354 Elim1Store]: treesize reduction 44, result has 32.3 percent of original size [2021-12-06 22:55:03,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2021-12-06 22:55:03,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 22:55:03,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 39 [2021-12-06 22:55:04,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,601 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 22:55:04,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 57 [2021-12-06 22:55:04,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,620 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 22:55:04,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 78 [2021-12-06 22:55:04,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:04,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2021-12-06 22:55:05,212 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:55:05,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2021-12-06 22:55:05,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:05,251 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:55:05,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2021-12-06 22:55:05,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-12-06 22:55:05,453 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-12-06 22:55:05,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2021-12-06 22:55:05,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-12-06 22:55:05,501 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:55:05,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2021-12-06 22:55:05,750 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-12-06 22:55:05,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2021-12-06 22:55:05,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-12-06 22:55:05,792 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:55:05,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2021-12-06 22:55:06,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:06,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:55:06,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:55:06,074 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:55:06,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2021-12-06 22:55:06,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-12-06 22:55:10,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2021-12-06 22:55:11,394 INFO L354 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2021-12-06 22:55:11,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 52 [2021-12-06 22:55:11,414 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 22:55:11,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-12-06 22:55:11,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:55:11,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:55:11,726 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:55:11,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334170427] [2021-12-06 22:55:11,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334170427] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:55:11,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:55:11,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-12-06 22:55:11,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520433943] [2021-12-06 22:55:11,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:55:11,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 22:55:11,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:55:11,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 22:55:11,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=743, Unknown=0, NotChecked=0, Total=812 [2021-12-06 22:55:11,727 INFO L87 Difference]: Start difference. First operand 295 states and 334 transitions. Second operand has 29 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 24 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:55:12,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:55:12,269 INFO L93 Difference]: Finished difference Result 327 states and 368 transitions. [2021-12-06 22:55:12,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-06 22:55:12,269 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 24 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2021-12-06 22:55:12,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:55:12,270 INFO L225 Difference]: With dead ends: 327 [2021-12-06 22:55:12,270 INFO L226 Difference]: Without dead ends: 327 [2021-12-06 22:55:12,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=87, Invalid=969, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 22:55:12,271 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 61 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1563 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:55:12,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 2113 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 284 Invalid, 0 Unknown, 1563 Unchecked, 0.3s Time] [2021-12-06 22:55:12,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-12-06 22:55:12,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 317. [2021-12-06 22:55:12,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 235 states have (on average 1.4170212765957446) internal successors, (333), 298 states have internal predecessors, (333), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 22:55:12,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 357 transitions. [2021-12-06 22:55:12,276 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 357 transitions. Word has length 49 [2021-12-06 22:55:12,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:55:12,276 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 357 transitions. [2021-12-06 22:55:12,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 24 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:55:12,276 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 357 transitions. [2021-12-06 22:55:12,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 22:55:12,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:55:12,276 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, 1, 1, 1, 1, 1, 1] [2021-12-06 22:55:12,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-12-06 22:55:12,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:55:12,477 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 22:55:12,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:55:12,478 INFO L85 PathProgramCache]: Analyzing trace with hash 459629702, now seen corresponding path program 1 times [2021-12-06 22:55:12,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:55:12,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030033335] [2021-12-06 22:55:12,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:55:12,480 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:55:12,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:55:12,482 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:55:12,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-12-06 22:55:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:55:13,093 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:55:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:55:13,520 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-06 22:55:13,521 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 22:55:13,521 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr24REQUIRES_VIOLATION (78 of 79 remaining) [2021-12-06 22:55:13,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr0REQUIRES_VIOLATION (77 of 79 remaining) [2021-12-06 22:55:13,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr1REQUIRES_VIOLATION (76 of 79 remaining) [2021-12-06 22:55:13,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr2REQUIRES_VIOLATION (75 of 79 remaining) [2021-12-06 22:55:13,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr3REQUIRES_VIOLATION (74 of 79 remaining) [2021-12-06 22:55:13,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr4ASSERT_VIOLATIONMEMORY_FREE (73 of 79 remaining) [2021-12-06 22:55:13,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr5ASSERT_VIOLATIONMEMORY_FREE (72 of 79 remaining) [2021-12-06 22:55:13,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr6ASSERT_VIOLATIONMEMORY_FREE (71 of 79 remaining) [2021-12-06 22:55:13,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr7REQUIRES_VIOLATION (70 of 79 remaining) [2021-12-06 22:55:13,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr8REQUIRES_VIOLATION (69 of 79 remaining) [2021-12-06 22:55:13,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (68 of 79 remaining) [2021-12-06 22:55:13,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION (67 of 79 remaining) [2021-12-06 22:55:13,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION (66 of 79 remaining) [2021-12-06 22:55:13,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION (65 of 79 remaining) [2021-12-06 22:55:13,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION (64 of 79 remaining) [2021-12-06 22:55:13,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION (63 of 79 remaining) [2021-12-06 22:55:13,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION (62 of 79 remaining) [2021-12-06 22:55:13,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION (61 of 79 remaining) [2021-12-06 22:55:13,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr4REQUIRES_VIOLATION (60 of 79 remaining) [2021-12-06 22:55:13,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr5REQUIRES_VIOLATION (59 of 79 remaining) [2021-12-06 22:55:13,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr6REQUIRES_VIOLATION (58 of 79 remaining) [2021-12-06 22:55:13,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr7REQUIRES_VIOLATION (57 of 79 remaining) [2021-12-06 22:55:13,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION (56 of 79 remaining) [2021-12-06 22:55:13,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION (55 of 79 remaining) [2021-12-06 22:55:13,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION (54 of 79 remaining) [2021-12-06 22:55:13,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION (53 of 79 remaining) [2021-12-06 22:55:13,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION (52 of 79 remaining) [2021-12-06 22:55:13,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION (51 of 79 remaining) [2021-12-06 22:55:13,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION (50 of 79 remaining) [2021-12-06 22:55:13,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION (49 of 79 remaining) [2021-12-06 22:55:13,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (48 of 79 remaining) [2021-12-06 22:55:13,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (47 of 79 remaining) [2021-12-06 22:55:13,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (46 of 79 remaining) [2021-12-06 22:55:13,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (45 of 79 remaining) [2021-12-06 22:55:13,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (44 of 79 remaining) [2021-12-06 22:55:13,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (43 of 79 remaining) [2021-12-06 22:55:13,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (42 of 79 remaining) [2021-12-06 22:55:13,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (41 of 79 remaining) [2021-12-06 22:55:13,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (40 of 79 remaining) [2021-12-06 22:55:13,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (39 of 79 remaining) [2021-12-06 22:55:13,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (38 of 79 remaining) [2021-12-06 22:55:13,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (37 of 79 remaining) [2021-12-06 22:55:13,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (36 of 79 remaining) [2021-12-06 22:55:13,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (35 of 79 remaining) [2021-12-06 22:55:13,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (34 of 79 remaining) [2021-12-06 22:55:13,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (33 of 79 remaining) [2021-12-06 22:55:13,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONARRAY_INDEX (32 of 79 remaining) [2021-12-06 22:55:13,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (31 of 79 remaining) [2021-12-06 22:55:13,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (30 of 79 remaining) [2021-12-06 22:55:13,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (29 of 79 remaining) [2021-12-06 22:55:13,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (28 of 79 remaining) [2021-12-06 22:55:13,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (27 of 79 remaining) [2021-12-06 22:55:13,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (26 of 79 remaining) [2021-12-06 22:55:13,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (25 of 79 remaining) [2021-12-06 22:55:13,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (24 of 79 remaining) [2021-12-06 22:55:13,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION (23 of 79 remaining) [2021-12-06 22:55:13,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (22 of 79 remaining) [2021-12-06 22:55:13,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (21 of 79 remaining) [2021-12-06 22:55:13,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (20 of 79 remaining) [2021-12-06 22:55:13,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION (19 of 79 remaining) [2021-12-06 22:55:13,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE (18 of 79 remaining) [2021-12-06 22:55:13,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE (17 of 79 remaining) [2021-12-06 22:55:13,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE (16 of 79 remaining) [2021-12-06 22:55:13,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION (15 of 79 remaining) [2021-12-06 22:55:13,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION (14 of 79 remaining) [2021-12-06 22:55:13,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (13 of 79 remaining) [2021-12-06 22:55:13,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE (12 of 79 remaining) [2021-12-06 22:55:13,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE (11 of 79 remaining) [2021-12-06 22:55:13,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE (10 of 79 remaining) [2021-12-06 22:55:13,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE (9 of 79 remaining) [2021-12-06 22:55:13,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE (8 of 79 remaining) [2021-12-06 22:55:13,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION (7 of 79 remaining) [2021-12-06 22:55:13,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATION (6 of 79 remaining) [2021-12-06 22:55:13,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATION (5 of 79 remaining) [2021-12-06 22:55:13,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION (4 of 79 remaining) [2021-12-06 22:55:13,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE (3 of 79 remaining) [2021-12-06 22:55:13,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE (2 of 79 remaining) [2021-12-06 22:55:13,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE (1 of 79 remaining) [2021-12-06 22:55:13,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK (0 of 79 remaining) [2021-12-06 22:55:13,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-12-06 22:55:13,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:55:13,737 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:55:13,748 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 22:55:13,771 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 22:55:13,772 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 22:55:13,772 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 22:55:13,772 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 22:55:13,773 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 22:55:13,773 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 22:55:13,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 10:55:13 BoogieIcfgContainer [2021-12-06 22:55:13,810 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 22:55:13,810 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 22:55:13,810 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 22:55:13,810 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 22:55:13,811 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:54:03" (3/4) ... [2021-12-06 22:55:13,812 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 22:55:13,815 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 22:55:13,815 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 22:55:13,815 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 22:55:13,815 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 22:55:13,815 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 22:55:13,815 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 22:55:13,849 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 22:55:13,850 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 22:55:13,850 INFO L158 Benchmark]: Toolchain (without parser) took 71600.87ms. Allocated memory was 56.6MB in the beginning and 88.1MB in the end (delta: 31.5MB). Free memory was 33.7MB in the beginning and 47.1MB in the end (delta: -13.4MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2021-12-06 22:55:13,850 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 56.6MB. Free memory is still 37.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:55:13,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 494.16ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 33.4MB in the beginning and 46.6MB in the end (delta: -13.2MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2021-12-06 22:55:13,851 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.58ms. Allocated memory is still 69.2MB. Free memory was 46.3MB in the beginning and 43.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:55:13,851 INFO L158 Benchmark]: Boogie Preprocessor took 31.55ms. Allocated memory is still 69.2MB. Free memory was 43.3MB in the beginning and 40.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:55:13,851 INFO L158 Benchmark]: RCFGBuilder took 704.20ms. Allocated memory is still 69.2MB. Free memory was 40.4MB in the beginning and 44.4MB in the end (delta: -4.0MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2021-12-06 22:55:13,851 INFO L158 Benchmark]: TraceAbstraction took 70280.96ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 43.6MB in the beginning and 53.4MB in the end (delta: -9.7MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. [2021-12-06 22:55:13,851 INFO L158 Benchmark]: Witness Printer took 39.46ms. Allocated memory is still 88.1MB. Free memory was 53.3MB in the beginning and 47.1MB in the end (delta: 6.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 22:55:13,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 56.6MB. Free memory is still 37.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 494.16ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 33.4MB in the beginning and 46.6MB in the end (delta: -13.2MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.58ms. Allocated memory is still 69.2MB. Free memory was 46.3MB in the beginning and 43.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.55ms. Allocated memory is still 69.2MB. Free memory was 43.3MB in the beginning and 40.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 704.20ms. Allocated memory is still 69.2MB. Free memory was 40.4MB in the beginning and 44.4MB in the end (delta: -4.0MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * TraceAbstraction took 70280.96ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 43.6MB in the beginning and 53.4MB in the end (delta: -9.7MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. * Witness Printer took 39.46ms. Allocated memory is still 88.1MB. Free memory was 53.3MB in the beginning and 47.1MB in the end (delta: 6.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 790]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L820-L823] static int (*dispatch_type[])(struct hid_parser *parser, struct hid_item *item) = { hid_parser_main }; [L859] struct hid_device dev; VAL [dev={2:0}, ldv_global_msg_list={1:0}] [L867] CALL entry_point() [L861] CALL probe_23(&dev) [L842] int ret = - -3; VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, ret=3] [L843] CALL, EXPR ldv_malloc(sizeof(struct hid_report_enum)) VAL [\old(size)=1036, dev={2:0}, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L843] RET, EXPR ldv_malloc(sizeof(struct hid_report_enum)) VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, ldv_malloc(sizeof(struct hid_report_enum))={18:0}, ret=3] [L843] struct hid_report_enum *p = (struct hid_report_enum *)ldv_malloc(sizeof(struct hid_report_enum)); [L844] COND FALSE !(p==0) VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, p={18:0}, ret=3] [L846] CALL LDV_INIT_LIST_HEAD(&p->report_list) VAL [dev={2:0}, ldv_global_msg_list={1:0}, list={18:4}] [L540] list->next = list VAL [dev={2:0}, ldv_global_msg_list={1:0}, list={18:4}, list={18:4}] [L541] list->prev = list VAL [dev={2:0}, ldv_global_msg_list={1:0}, list={18:4}, list={18:4}] [L846] RET LDV_INIT_LIST_HEAD(&p->report_list) VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, p={18:0}, ret=3] [L847] dev->report_enum = p VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, p={18:0}, ret=3] [L848] CALL hid_open_report(dev) [L812] struct hid_parser *parser; [L813] struct hid_item item; VAL [dev={2:0}, device={2:0}, device={2:0}, item={23:0}, ldv_global_msg_list={1:0}] [L814] CALL, EXPR ldv_zalloc(sizeof(struct hid_parser)) VAL [dev={2:0}, ldv_global_msg_list={1:0}] [L533] EXPR, FCALL calloc(size, 1) [L533] return calloc(size, 1); VAL [\old(size)=8, \result={3:0}, calloc(size, 1)={3:0}, dev={2:0}, ldv_global_msg_list={1:0}, size=8] [L814] RET, EXPR ldv_zalloc(sizeof(struct hid_parser)) VAL [dev={2:0}, device={2:0}, device={2:0}, item={23:0}, ldv_global_msg_list={1:0}, ldv_zalloc(sizeof(struct hid_parser))={3:0}] [L814] parser = ldv_zalloc(sizeof(struct hid_parser)) [L815] COND FALSE !(!parser) VAL [dev={2:0}, device={2:0}, device={2:0}, item={23:0}, ldv_global_msg_list={1:0}, parser={3:0}] [L818] parser->device = device VAL [dev={2:0}, device={2:0}, device={2:0}, item={23:0}, ldv_global_msg_list={1:0}, parser={3:0}] [L819] CALL, EXPR ldv_positive() [L519] int r = __VERIFIER_nondet_int(); [L520] COND TRUE r>0 [L520] return r; VAL [\result=1610612736, dev={2:0}, ldv_global_msg_list={1:0}, r=1610612736] [L819] RET, EXPR ldv_positive() [L819] parser->report_id = ldv_positive() VAL [dev={2:0}, device={2:0}, device={2:0}, item={23:0}, ldv_global_msg_list={1:0}, ldv_positive()=1610612736, parser={3:0}] [L824] CALL, EXPR fetch_item(&item) [L778] COND FALSE !(__VERIFIER_nondet_int()) [L781] item->type = 0 VAL [dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}] [L782] item->a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}] [L783] item->b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}] [L784] item->c = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}] [L785] return 0; VAL [\result=0, dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}] [L824] RET, EXPR fetch_item(&item) [L824] COND TRUE fetch_item(&item)!=-1 [L825] EXPR item.type VAL [dev={2:0}, device={2:0}, device={2:0}, item={23:0}, item.type=0, ldv_global_msg_list={1:0}, parser={3:0}] [L825] EXPR dispatch_type[item.type] [L825] CALL dispatch_type[item.type](parser, &item) [L800] EXPR parser->device VAL [dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}, parser={3:0}, parser={3:0}, parser->device={2:0}] [L800] EXPR parser->report_id VAL [dev={2:0}, item={23:0}, item={23:0}, ldv_global_msg_list={1:0}, parser={3:0}, parser={3:0}, parser->device={2:0}, parser->report_id=1610612736] [L800] CALL hid_register_report(parser->device, parser->report_id) [L788] EXPR device->report_enum VAL [\old(id)=1610612736, dev={2:0}, device={2:0}, device={2:0}, device->report_enum={18:0}, id=1610612736, ldv_global_msg_list={1:0}] [L788] struct hid_report_enum *report_enum = device->report_enum; [L789] struct hid_report *report; VAL [\old(id)=1610612736, dev={2:0}, device={2:0}, device={2:0}, id=1610612736, ldv_global_msg_list={1:0}, report_enum={18:0}] [L790] report_enum->report_id_hash[id] - UnprovableResult [Line: 806]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 806]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 806]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 806]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 806]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 806]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 847]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 847]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 818]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 818]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 819]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 819]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 784]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 784]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 825]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 825]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 825]: Unable to prove that array index is always in bounds Unable to prove that array index is always in bounds Reason: Not analyzed. - UnprovableResult [Line: 800]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 800]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 800]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 800]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 790]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 791]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 791]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 833]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 833]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 838]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 838]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 839]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 839]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 839]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 839]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 839]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 866]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 204 locations, 79 error locations. Started 1 CEGAR loops. OverallTime: 70.2s, OverallIterations: 32, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 15.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2607 SdHoareTripleChecker+Valid, 11.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2560 mSDsluCounter, 30292 SdHoareTripleChecker+Invalid, 9.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 8246 IncrementalHoareTripleChecker+Unchecked, 24775 mSDsCounter, 219 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7687 IncrementalHoareTripleChecker+Invalid, 16152 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 219 mSolverCounterUnsat, 5517 mSDtfsCounter, 7687 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1079 GetRequests, 708 SyntacticMatches, 24 SemanticMatches, 347 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 23.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=317occurred in iteration=31, InterpolantAutomatonStates: 359, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 31 MinimizatonAttempts, 657 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 41.1s InterpolantComputationTime, 1092 NumberOfCodeBlocks, 1092 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1012 ConstructedInterpolants, 387 QuantifiedInterpolants, 28856 SizeOfPredicates, 334 NumberOfNonLiveVariables, 6101 ConjunctsInSsa, 809 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-06 22:55:13,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0544ad83-8a13-484d-900f-78ed33fee505/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)