./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:23:11,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:23:11,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:23:11,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:23:11,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:23:11,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:23:11,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:23:11,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:23:11,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:23:11,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:23:11,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:23:11,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:23:11,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:23:11,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:23:11,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:23:11,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:23:11,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:23:11,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:23:11,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:23:11,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:23:11,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:23:11,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:23:11,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:23:11,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:23:11,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:23:11,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:23:11,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:23:11,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:23:11,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:23:11,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:23:11,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:23:11,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:23:11,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:23:11,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:23:11,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:23:11,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:23:11,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:23:11,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:23:11,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:23:11,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:23:11,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:23:11,791 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-07 01:23:11,850 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:23:11,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:23:11,853 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:23:11,853 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:23:11,854 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:23:11,854 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:23:11,854 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:23:11,855 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:23:11,855 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:23:11,855 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:23:11,856 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:23:11,857 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:23:11,857 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:23:11,857 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:23:11,858 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:23:11,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:23:11,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:23:11,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:23:11,860 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:23:11,860 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:23:11,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:23:11,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:23:11,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:23:11,861 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:23:11,861 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:23:11,862 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:23:11,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:23:11,862 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:23:11,863 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:23:11,863 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:23:11,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:23:11,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:23:11,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:23:11,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:23:11,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:23:11,865 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:23:11,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:23:11,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:23:11,866 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:23:11,866 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 [2021-11-07 01:23:12,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:23:12,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:23:12,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:23:12,222 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:23:12,226 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:23:12,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2021-11-07 01:23:12,312 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/data/58b4dfc96/6114382c4dfe4112ac6eed522c700023/FLAGe2c3cf857 [2021-11-07 01:23:13,029 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:23:13,030 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2021-11-07 01:23:13,057 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/data/58b4dfc96/6114382c4dfe4112ac6eed522c700023/FLAGe2c3cf857 [2021-11-07 01:23:13,296 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/data/58b4dfc96/6114382c4dfe4112ac6eed522c700023 [2021-11-07 01:23:13,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:23:13,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:23:13,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:23:13,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:23:13,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:23:13,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:13" (1/1) ... [2021-11-07 01:23:13,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@728a66a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:13, skipping insertion in model container [2021-11-07 01:23:13,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:13" (1/1) ... [2021-11-07 01:23:13,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:23:13,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:23:14,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:23:14,050 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:790) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.PostProcessor.postProcess(PostProcessor.java:208) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:621) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:23:14,058 INFO L168 Benchmark]: Toolchain (without parser) took 753.68 ms. Allocated memory was 102.8 MB in the beginning and 132.1 MB in the end (delta: 29.4 MB). Free memory was 68.2 MB in the beginning and 101.1 MB in the end (delta: -32.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:23:14,060 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 102.8 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:23:14,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 734.99 ms. Allocated memory was 102.8 MB in the beginning and 132.1 MB in the end (delta: 29.4 MB). Free memory was 67.9 MB in the beginning and 101.1 MB in the end (delta: -33.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:23:14,066 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 102.8 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 734.99 ms. Allocated memory was 102.8 MB in the beginning and 132.1 MB in the end (delta: 29.4 MB). Free memory was 67.9 MB in the beginning and 101.1 MB in the end (delta: -33.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * 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_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:23:16,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:23:16,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:23:16,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:23:16,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:23:16,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:23:16,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:23:16,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:23:16,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:23:16,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:23:16,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:23:16,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:23:16,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:23:16,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:23:16,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:23:16,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:23:16,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:23:16,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:23:16,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:23:16,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:23:16,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:23:16,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:23:16,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:23:16,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:23:16,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:23:16,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:23:16,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:23:16,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:23:16,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:23:16,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:23:16,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:23:16,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:23:16,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:23:16,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:23:16,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:23:16,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:23:16,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:23:16,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:23:16,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:23:16,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:23:16,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:23:16,805 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-07 01:23:16,838 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:23:16,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:23:16,840 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:23:16,840 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:23:16,840 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:23:16,841 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:23:16,841 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:23:16,842 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:23:16,842 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:23:16,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:23:16,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:23:16,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:23:16,844 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:23:16,844 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:23:16,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:23:16,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:23:16,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:23:16,846 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:23:16,846 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:23:16,847 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:23:16,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:23:16,847 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:23:16,848 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:23:16,848 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:23:16,848 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:23:16,849 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:23:16,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:23:16,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:23:16,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:23:16,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:23:16,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:23:16,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:23:16,852 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:23:16,852 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:23:16,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:23:16,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:23:16,853 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_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 [2021-11-07 01:23:17,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:23:17,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:23:17,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:23:17,356 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:23:17,357 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:23:17,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2021-11-07 01:23:17,458 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/data/1572f5e07/3ce6bd3cb853459085c21fe064eb8d7d/FLAG10f28ff7c [2021-11-07 01:23:18,248 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:23:18,250 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2021-11-07 01:23:18,287 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/data/1572f5e07/3ce6bd3cb853459085c21fe064eb8d7d/FLAG10f28ff7c [2021-11-07 01:23:18,452 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/data/1572f5e07/3ce6bd3cb853459085c21fe064eb8d7d [2021-11-07 01:23:18,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:23:18,458 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:23:18,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:23:18,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:23:18,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:23:18,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:18" (1/1) ... [2021-11-07 01:23:18,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22b0fa59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:18, skipping insertion in model container [2021-11-07 01:23:18,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:18" (1/1) ... [2021-11-07 01:23:18,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:23:18,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:23:19,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:23:19,347 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:23:19,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:23:19,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:23:19,430 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:23:19,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:23:19,603 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:23:19,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:19 WrapperNode [2021-11-07 01:23:19,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:23:19,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:23:19,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:23:19,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:23:19,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:19" (1/1) ... [2021-11-07 01:23:19,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:19" (1/1) ... [2021-11-07 01:23:19,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:23:19,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:23:19,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:23:19,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:23:19,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:19" (1/1) ... [2021-11-07 01:23:19,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:19" (1/1) ... [2021-11-07 01:23:19,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:19" (1/1) ... [2021-11-07 01:23:19,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:19" (1/1) ... [2021-11-07 01:23:19,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:19" (1/1) ... [2021-11-07 01:23:19,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:19" (1/1) ... [2021-11-07 01:23:19,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:19" (1/1) ... [2021-11-07 01:23:19,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:23:19,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:23:19,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:23:19,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:23:19,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:19" (1/1) ... [2021-11-07 01:23:19,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:23:19,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:23:19,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:23:19,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:23:19,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:23:19,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:23:19,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:23:19,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:23:19,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:23:19,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:23:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:23:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:23:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:23:19,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:23:21,568 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:23:21,568 INFO L299 CfgBuilder]: Removed 55 assume(true) statements. [2021-11-07 01:23:21,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:23:21 BoogieIcfgContainer [2021-11-07 01:23:21,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:23:21,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:23:21,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:23:21,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:23:21,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:23:18" (1/3) ... [2021-11-07 01:23:21,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455c5caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:23:21, skipping insertion in model container [2021-11-07 01:23:21,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:19" (2/3) ... [2021-11-07 01:23:21,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455c5caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:23:21, skipping insertion in model container [2021-11-07 01:23:21,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:23:21" (3/3) ... [2021-11-07 01:23:21,602 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test23_1.i [2021-11-07 01:23:21,609 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:23:21,620 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 96 error locations. [2021-11-07 01:23:21,675 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:23:21,680 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:23:21,681 INFO L340 AbstractCegarLoop]: Starting to check reachability of 96 error locations. [2021-11-07 01:23:21,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 214 states, 117 states have (on average 1.9658119658119657) internal successors, (230), 213 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:21,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:23:21,712 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:21,713 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:23:21,713 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 01:23:21,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:21,721 INFO L85 PathProgramCache]: Analyzing trace with hash 889508777, now seen corresponding path program 1 times [2021-11-07 01:23:21,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:21,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576459502] [2021-11-07 01:23:21,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:21,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:21,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:21,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:21,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:23:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:21,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:23:21,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:21,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:23:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:22,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:22,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:22,134 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:22,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576459502] [2021-11-07 01:23:22,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576459502] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:22,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:22,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:23:22,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860412079] [2021-11-07 01:23:22,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:23:22,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:22,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:23:22,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:23:22,197 INFO L87 Difference]: Start difference. First operand has 214 states, 117 states have (on average 1.9658119658119657) internal successors, (230), 213 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:23,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:23,491 INFO L93 Difference]: Finished difference Result 432 states and 457 transitions. [2021-11-07 01:23:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:23:23,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 01:23:23,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:23,510 INFO L225 Difference]: With dead ends: 432 [2021-11-07 01:23:23,510 INFO L226 Difference]: Without dead ends: 428 [2021-11-07 01:23:23,512 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:23:23,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-11-07 01:23:23,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 214. [2021-11-07 01:23:23,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 119 states have (on average 1.9243697478991597) internal successors, (229), 213 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 229 transitions. [2021-11-07 01:23:23,574 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 229 transitions. Word has length 6 [2021-11-07 01:23:23,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:23,575 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 229 transitions. [2021-11-07 01:23:23,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:23,575 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 229 transitions. [2021-11-07 01:23:23,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:23:23,576 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:23,576 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:23:23,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:23,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:23,794 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 01:23:23,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:23,795 INFO L85 PathProgramCache]: Analyzing trace with hash 889508778, now seen corresponding path program 1 times [2021-11-07 01:23:23,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:23,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073591] [2021-11-07 01:23:23,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:23,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:23,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:23,804 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:23,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:23:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:23,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:23:23,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:23,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:23:24,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:24,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:24,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:24,387 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:24,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073591] [2021-11-07 01:23:24,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073591] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:24,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:24,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:23:24,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244942735] [2021-11-07 01:23:24,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:23:24,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:24,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:23:24,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:23:24,392 INFO L87 Difference]: Start difference. First operand 214 states and 229 transitions. Second operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:27,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:27,707 INFO L93 Difference]: Finished difference Result 443 states and 468 transitions. [2021-11-07 01:23:27,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:23:27,709 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 01:23:27,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:27,714 INFO L225 Difference]: With dead ends: 443 [2021-11-07 01:23:27,714 INFO L226 Difference]: Without dead ends: 443 [2021-11-07 01:23:27,715 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:23:27,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-11-07 01:23:27,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 215. [2021-11-07 01:23:27,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 120 states have (on average 1.9083333333333334) internal successors, (229), 214 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:27,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 229 transitions. [2021-11-07 01:23:27,750 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 229 transitions. Word has length 6 [2021-11-07 01:23:27,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:27,750 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 229 transitions. [2021-11-07 01:23:27,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:27,751 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 229 transitions. [2021-11-07 01:23:27,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:23:27,752 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:27,753 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:23:27,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:27,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:27,954 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 01:23:27,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:27,955 INFO L85 PathProgramCache]: Analyzing trace with hash 889568359, now seen corresponding path program 1 times [2021-11-07 01:23:27,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:27,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082589248] [2021-11-07 01:23:27,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:27,962 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:27,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:27,963 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:27,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:23:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:28,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:23:28,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:28,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:28,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:28,193 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:28,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082589248] [2021-11-07 01:23:28,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1082589248] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:28,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:28,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:23:28,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034780908] [2021-11-07 01:23:28,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:28,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:28,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:28,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:28,209 INFO L87 Difference]: Start difference. First operand 215 states and 229 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:28,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:28,262 INFO L93 Difference]: Finished difference Result 314 states and 329 transitions. [2021-11-07 01:23:28,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:23:28,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 01:23:28,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:28,266 INFO L225 Difference]: With dead ends: 314 [2021-11-07 01:23:28,266 INFO L226 Difference]: Without dead ends: 314 [2021-11-07 01:23:28,267 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:23:28,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-11-07 01:23:28,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 210. [2021-11-07 01:23:28,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 118 states have (on average 1.8898305084745763) internal successors, (223), 209 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 223 transitions. [2021-11-07 01:23:28,300 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 223 transitions. Word has length 6 [2021-11-07 01:23:28,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:28,301 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 223 transitions. [2021-11-07 01:23:28,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:28,301 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 223 transitions. [2021-11-07 01:23:28,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:23:28,302 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:28,303 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:28,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:28,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:28,521 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 01:23:28,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:28,522 INFO L85 PathProgramCache]: Analyzing trace with hash 119608239, now seen corresponding path program 1 times [2021-11-07 01:23:28,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:28,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640622567] [2021-11-07 01:23:28,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:28,523 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:28,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:28,525 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:28,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:23:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:28,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:23:28,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:28,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:28,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:28,727 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:28,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640622567] [2021-11-07 01:23:28,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640622567] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:28,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:28,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:23:28,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966764539] [2021-11-07 01:23:28,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:28,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:28,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:28,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:28,733 INFO L87 Difference]: Start difference. First operand 210 states and 223 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:28,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:28,785 INFO L93 Difference]: Finished difference Result 262 states and 275 transitions. [2021-11-07 01:23:28,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:23:28,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:23:28,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:28,788 INFO L225 Difference]: With dead ends: 262 [2021-11-07 01:23:28,788 INFO L226 Difference]: Without dead ends: 262 [2021-11-07 01:23:28,789 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:23:28,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-07 01:23:28,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 210. [2021-11-07 01:23:28,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 118 states have (on average 1.88135593220339) internal successors, (222), 209 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:28,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 222 transitions. [2021-11-07 01:23:28,815 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 222 transitions. Word has length 8 [2021-11-07 01:23:28,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:28,815 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 222 transitions. [2021-11-07 01:23:28,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:28,817 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 222 transitions. [2021-11-07 01:23:28,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:23:28,818 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:28,818 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:28,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:29,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:29,038 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 01:23:29,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:29,039 INFO L85 PathProgramCache]: Analyzing trace with hash 119442413, now seen corresponding path program 1 times [2021-11-07 01:23:29,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:29,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328938951] [2021-11-07 01:23:29,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:29,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:29,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:29,041 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:29,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:23:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:29,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:23:29,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:29,233 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-11-07 01:23:29,234 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 2 case distinctions, treesize of input 12 treesize of output 26 [2021-11-07 01:23:29,376 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 01:23:29,377 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 22 treesize of output 29 [2021-11-07 01:23:29,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:29,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:33,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:33,744 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:33,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328938951] [2021-11-07 01:23:33,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328938951] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:33,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:33,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:23:33,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129489278] [2021-11-07 01:23:33,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:23:33,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:33,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:23:33,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=25, Unknown=2, NotChecked=0, Total=42 [2021-11-07 01:23:33,746 INFO L87 Difference]: Start difference. First operand 210 states and 222 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:34,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:34,772 INFO L93 Difference]: Finished difference Result 284 states and 298 transitions. [2021-11-07 01:23:34,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:23:34,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:23:34,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:34,775 INFO L225 Difference]: With dead ends: 284 [2021-11-07 01:23:34,775 INFO L226 Difference]: Without dead ends: 284 [2021-11-07 01:23:34,775 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=29, Invalid=41, Unknown=2, NotChecked=0, Total=72 [2021-11-07 01:23:34,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-11-07 01:23:34,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 209. [2021-11-07 01:23:34,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 118 states have (on average 1.8728813559322033) internal successors, (221), 208 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:34,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 221 transitions. [2021-11-07 01:23:34,784 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 221 transitions. Word has length 8 [2021-11-07 01:23:34,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:34,785 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 221 transitions. [2021-11-07 01:23:34,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:34,785 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 221 transitions. [2021-11-07 01:23:34,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:23:34,786 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:34,786 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:34,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:34,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:34,998 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 01:23:34,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:34,999 INFO L85 PathProgramCache]: Analyzing trace with hash 119442414, now seen corresponding path program 1 times [2021-11-07 01:23:34,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:34,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043469124] [2021-11-07 01:23:34,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:34,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:35,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:35,000 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:35,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:23:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:35,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:23:35,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:35,211 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-11-07 01:23:35,211 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 2 case distinctions, treesize of input 22 treesize of output 35 [2021-11-07 01:23:35,240 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 01:23:35,241 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 1 case distinctions, treesize of input 35 treesize of output 36 [2021-11-07 01:23:35,582 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-07 01:23:35,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 59 [2021-11-07 01:23:35,651 INFO L354 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-11-07 01:23:35,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 48 treesize of output 70 [2021-11-07 01:23:35,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:35,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:36,367 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:36,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043469124] [2021-11-07 01:23:36,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043469124] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:36,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:36,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-07 01:23:36,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92634298] [2021-11-07 01:23:36,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:23:36,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:36,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:23:36,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:23:36,370 INFO L87 Difference]: Start difference. First operand 209 states and 221 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:38,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:38,040 INFO L93 Difference]: Finished difference Result 283 states and 297 transitions. [2021-11-07 01:23:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:23:38,041 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:23:38,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:38,043 INFO L225 Difference]: With dead ends: 283 [2021-11-07 01:23:38,043 INFO L226 Difference]: Without dead ends: 283 [2021-11-07 01:23:38,044 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:23:38,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-11-07 01:23:38,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 208. [2021-11-07 01:23:38,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 118 states have (on average 1.8644067796610169) internal successors, (220), 207 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:38,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 220 transitions. [2021-11-07 01:23:38,052 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 220 transitions. Word has length 8 [2021-11-07 01:23:38,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:38,053 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 220 transitions. [2021-11-07 01:23:38,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:38,054 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 220 transitions. [2021-11-07 01:23:38,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:23:38,054 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:38,055 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:38,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-07 01:23:38,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:38,274 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 01:23:38,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:38,274 INFO L85 PathProgramCache]: Analyzing trace with hash 176866541, now seen corresponding path program 1 times [2021-11-07 01:23:38,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:38,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979069117] [2021-11-07 01:23:38,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:38,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:38,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:38,276 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:38,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:23:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:38,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:23:38,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:38,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:38,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:38,513 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:38,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979069117] [2021-11-07 01:23:38,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979069117] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:38,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:38,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:23:38,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386958250] [2021-11-07 01:23:38,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:23:38,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:38,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:23:38,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:23:38,516 INFO L87 Difference]: Start difference. First operand 208 states and 220 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:38,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:38,615 INFO L93 Difference]: Finished difference Result 218 states and 227 transitions. [2021-11-07 01:23:38,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:23:38,616 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:23:38,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:38,622 INFO L225 Difference]: With dead ends: 218 [2021-11-07 01:23:38,622 INFO L226 Difference]: Without dead ends: 218 [2021-11-07 01:23:38,622 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:23:38,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-07 01:23:38,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 210. [2021-11-07 01:23:38,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 120 states have (on average 1.85) internal successors, (222), 209 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 222 transitions. [2021-11-07 01:23:38,634 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 222 transitions. Word has length 8 [2021-11-07 01:23:38,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:38,634 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 222 transitions. [2021-11-07 01:23:38,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:38,635 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 222 transitions. [2021-11-07 01:23:38,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:23:38,635 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:38,635 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:38,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-07 01:23:38,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:38,851 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr95ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 01:23:38,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:38,851 INFO L85 PathProgramCache]: Analyzing trace with hash 176868622, now seen corresponding path program 1 times [2021-11-07 01:23:38,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:38,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411097480] [2021-11-07 01:23:38,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:38,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:38,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:38,853 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:38,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:23:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:38,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:38,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:39,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:39,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:39,065 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:39,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411097480] [2021-11-07 01:23:39,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411097480] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:39,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:39,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:23:39,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037837749] [2021-11-07 01:23:39,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:23:39,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:39,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:23:39,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:39,068 INFO L87 Difference]: Start difference. First operand 210 states and 222 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:39,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:39,434 INFO L93 Difference]: Finished difference Result 213 states and 224 transitions. [2021-11-07 01:23:39,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:23:39,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:23:39,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:39,436 INFO L225 Difference]: With dead ends: 213 [2021-11-07 01:23:39,436 INFO L226 Difference]: Without dead ends: 208 [2021-11-07 01:23:39,437 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:39,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-07 01:23:39,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-11-07 01:23:39,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 118 states have (on average 1.8559322033898304) internal successors, (219), 207 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:39,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 219 transitions. [2021-11-07 01:23:39,444 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 219 transitions. Word has length 8 [2021-11-07 01:23:39,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:39,445 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 219 transitions. [2021-11-07 01:23:39,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:39,445 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 219 transitions. [2021-11-07 01:23:39,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:23:39,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:39,446 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:39,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:39,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:39,662 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 01:23:39,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:39,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2124084655, now seen corresponding path program 1 times [2021-11-07 01:23:39,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:39,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393589704] [2021-11-07 01:23:39,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:39,664 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:39,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:39,665 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:39,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:23:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:39,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:23:39,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:39,903 INFO L354 Elim1Store]: treesize reduction 13, result has 35.0 percent of original size [2021-11-07 01:23:39,904 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 1 case distinctions, treesize of input 9 treesize of output 13 [2021-11-07 01:23:39,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:39,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:40,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:40,010 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:40,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393589704] [2021-11-07 01:23:40,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393589704] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:40,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:40,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:23:40,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718179637] [2021-11-07 01:23:40,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:23:40,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:40,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:23:40,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:23:40,013 INFO L87 Difference]: Start difference. First operand 208 states and 219 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:40,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:40,684 INFO L93 Difference]: Finished difference Result 232 states and 244 transitions. [2021-11-07 01:23:40,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:23:40,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-07 01:23:40,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:40,687 INFO L225 Difference]: With dead ends: 232 [2021-11-07 01:23:40,687 INFO L226 Difference]: Without dead ends: 232 [2021-11-07 01:23:40,687 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:23:40,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-07 01:23:40,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 210. [2021-11-07 01:23:40,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 123 states have (on average 1.8211382113821137) internal successors, (224), 209 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:40,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 224 transitions. [2021-11-07 01:23:40,694 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 224 transitions. Word has length 13 [2021-11-07 01:23:40,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:40,695 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 224 transitions. [2021-11-07 01:23:40,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:40,695 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 224 transitions. [2021-11-07 01:23:40,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:23:40,696 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:40,696 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:40,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:40,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:40,911 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 01:23:40,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:40,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2124084654, now seen corresponding path program 1 times [2021-11-07 01:23:40,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:40,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140871444] [2021-11-07 01:23:40,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:40,912 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:40,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:40,913 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:40,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:23:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:41,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:23:41,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:41,165 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-07 01:23:41,166 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-07 01:23:41,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:41,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:41,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:41,543 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:41,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140871444] [2021-11-07 01:23:41,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140871444] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:41,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:41,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 01:23:41,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345086504] [2021-11-07 01:23:41,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:23:41,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:41,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:23:41,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:23:41,545 INFO L87 Difference]: Start difference. First operand 210 states and 224 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:42,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:42,193 INFO L93 Difference]: Finished difference Result 206 states and 219 transitions. [2021-11-07 01:23:42,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:23:42,194 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-07 01:23:42,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:42,196 INFO L225 Difference]: With dead ends: 206 [2021-11-07 01:23:42,196 INFO L226 Difference]: Without dead ends: 206 [2021-11-07 01:23:42,197 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:23:42,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-07 01:23:42,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-11-07 01:23:42,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 123 states have (on average 1.7804878048780488) internal successors, (219), 205 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:42,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 219 transitions. [2021-11-07 01:23:42,204 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 219 transitions. Word has length 13 [2021-11-07 01:23:42,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:42,204 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 219 transitions. [2021-11-07 01:23:42,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:42,205 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 219 transitions. [2021-11-07 01:23:42,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 01:23:42,206 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:42,206 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:42,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:42,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:42,420 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 01:23:42,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:42,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1135755529, now seen corresponding path program 1 times [2021-11-07 01:23:42,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:42,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192292044] [2021-11-07 01:23:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:42,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:42,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:42,423 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:42,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:23:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:42,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:23:42,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:42,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:42,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:42,768 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:42,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192292044] [2021-11-07 01:23:42,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192292044] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:42,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:42,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:23:42,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581555553] [2021-11-07 01:23:42,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:23:42,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:42,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:23:42,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:23:42,771 INFO L87 Difference]: Start difference. First operand 206 states and 219 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:42,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:42,872 INFO L93 Difference]: Finished difference Result 206 states and 218 transitions. [2021-11-07 01:23:42,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:23:42,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-07 01:23:42,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:42,874 INFO L225 Difference]: With dead ends: 206 [2021-11-07 01:23:42,874 INFO L226 Difference]: Without dead ends: 206 [2021-11-07 01:23:42,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:23:42,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-07 01:23:42,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-11-07 01:23:42,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 123 states have (on average 1.7723577235772359) internal successors, (218), 205 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:42,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 218 transitions. [2021-11-07 01:23:42,881 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 218 transitions. Word has length 15 [2021-11-07 01:23:42,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:42,881 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 218 transitions. [2021-11-07 01:23:42,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:42,883 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 218 transitions. [2021-11-07 01:23:42,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 01:23:42,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:42,884 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:42,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:43,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:43,106 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 01:23:43,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:43,107 INFO L85 PathProgramCache]: Analyzing trace with hash -2116860357, now seen corresponding path program 1 times [2021-11-07 01:23:43,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:43,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958802873] [2021-11-07 01:23:43,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:43,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:43,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:43,108 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:43,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:23:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:43,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:23:43,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:43,415 INFO L354 Elim1Store]: treesize reduction 13, result has 35.0 percent of original size [2021-11-07 01:23:43,415 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 21 treesize of output 22 [2021-11-07 01:23:43,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:43,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:43,847 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:43,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958802873] [2021-11-07 01:23:43,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958802873] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:43,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:43,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:23:43,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333559415] [2021-11-07 01:23:43,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:23:43,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:43,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:23:43,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:23:43,851 INFO L87 Difference]: Start difference. First operand 206 states and 218 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:44,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:44,539 INFO L93 Difference]: Finished difference Result 223 states and 234 transitions. [2021-11-07 01:23:44,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:23:44,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-07 01:23:44,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:44,542 INFO L225 Difference]: With dead ends: 223 [2021-11-07 01:23:44,542 INFO L226 Difference]: Without dead ends: 223 [2021-11-07 01:23:44,543 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:23:44,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-07 01:23:44,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 201. [2021-11-07 01:23:44,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 123 states have (on average 1.7317073170731707) internal successors, (213), 200 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 213 transitions. [2021-11-07 01:23:44,550 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 213 transitions. Word has length 21 [2021-11-07 01:23:44,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:44,551 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 213 transitions. [2021-11-07 01:23:44,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:44,551 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 213 transitions. [2021-11-07 01:23:44,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 01:23:44,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:44,552 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:44,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:44,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:44,768 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 01:23:44,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:44,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2116860356, now seen corresponding path program 1 times [2021-11-07 01:23:44,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:44,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085500464] [2021-11-07 01:23:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:44,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:44,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:44,770 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:44,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:23:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:45,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:23:45,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:45,085 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 01:23:45,085 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 1 case distinctions, treesize of input 19 treesize of output 20 [2021-11-07 01:23:45,090 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 16 treesize of output 14 [2021-11-07 01:23:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:45,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:45,586 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:45,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085500464] [2021-11-07 01:23:45,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085500464] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:45,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:45,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:23:45,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067844257] [2021-11-07 01:23:45,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:23:45,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:45,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:23:45,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:23:45,592 INFO L87 Difference]: Start difference. First operand 201 states and 213 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:47,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:47,809 INFO L93 Difference]: Finished difference Result 598 states and 636 transitions. [2021-11-07 01:23:47,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:23:47,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-07 01:23:47,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:47,815 INFO L225 Difference]: With dead ends: 598 [2021-11-07 01:23:47,815 INFO L226 Difference]: Without dead ends: 598 [2021-11-07 01:23:47,815 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:23:47,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-11-07 01:23:47,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 257. [2021-11-07 01:23:47,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 179 states have (on average 1.6983240223463687) internal successors, (304), 256 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:47,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 304 transitions. [2021-11-07 01:23:47,828 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 304 transitions. Word has length 21 [2021-11-07 01:23:47,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:47,828 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 304 transitions. [2021-11-07 01:23:47,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:47,829 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 304 transitions. [2021-11-07 01:23:47,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:23:47,830 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:47,830 INFO L513 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] [2021-11-07 01:23:47,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:48,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:48,046 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 01:23:48,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:48,046 INFO L85 PathProgramCache]: Analyzing trace with hash -383407928, now seen corresponding path program 1 times [2021-11-07 01:23:48,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:48,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339155872] [2021-11-07 01:23:48,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:48,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:48,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:48,049 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:48,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:23:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:48,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:23:48,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:48,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:48,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:48,513 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:48,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339155872] [2021-11-07 01:23:48,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339155872] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:48,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:48,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:23:48,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354329558] [2021-11-07 01:23:48,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:48,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:48,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:48,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:48,516 INFO L87 Difference]: Start difference. First operand 257 states and 304 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:48,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:48,547 INFO L93 Difference]: Finished difference Result 329 states and 378 transitions. [2021-11-07 01:23:48,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:23:48,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-07 01:23:48,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:48,551 INFO L225 Difference]: With dead ends: 329 [2021-11-07 01:23:48,551 INFO L226 Difference]: Without dead ends: 329 [2021-11-07 01:23:48,553 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:23:48,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-07 01:23:48,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 259. [2021-11-07 01:23:48,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 181 states have (on average 1.6906077348066297) internal successors, (306), 258 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:48,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 306 transitions. [2021-11-07 01:23:48,562 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 306 transitions. Word has length 24 [2021-11-07 01:23:48,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:48,562 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 306 transitions. [2021-11-07 01:23:48,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:48,563 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 306 transitions. [2021-11-07 01:23:48,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:23:48,569 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:48,570 INFO L513 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] [2021-11-07 01:23:48,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:48,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:48,786 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 01:23:48,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:48,786 INFO L85 PathProgramCache]: Analyzing trace with hash -383407260, now seen corresponding path program 1 times [2021-11-07 01:23:48,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:48,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917648501] [2021-11-07 01:23:48,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:48,787 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:48,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:48,788 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:48,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:23:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:49,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:23:49,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:49,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:49,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:49,744 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:49,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917648501] [2021-11-07 01:23:49,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917648501] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:49,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:49,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 9 [2021-11-07 01:23:49,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55060213] [2021-11-07 01:23:49,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:23:49,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:49,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:23:49,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:23:49,747 INFO L87 Difference]: Start difference. First operand 259 states and 306 transitions. Second operand has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:50,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:50,051 INFO L93 Difference]: Finished difference Result 257 states and 303 transitions. [2021-11-07 01:23:50,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:23:50,052 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-07 01:23:50,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:50,054 INFO L225 Difference]: With dead ends: 257 [2021-11-07 01:23:50,054 INFO L226 Difference]: Without dead ends: 257 [2021-11-07 01:23:50,054 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:23:50,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-11-07 01:23:50,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2021-11-07 01:23:50,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 181 states have (on average 1.6740331491712708) internal successors, (303), 256 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:50,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 303 transitions. [2021-11-07 01:23:50,066 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 303 transitions. Word has length 24 [2021-11-07 01:23:50,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:50,067 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 303 transitions. [2021-11-07 01:23:50,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:50,068 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 303 transitions. [2021-11-07 01:23:50,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 01:23:50,069 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:50,069 INFO L513 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] [2021-11-07 01:23:50,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:50,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:50,282 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 01:23:50,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:50,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1043779494, now seen corresponding path program 1 times [2021-11-07 01:23:50,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:50,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156012915] [2021-11-07 01:23:50,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:50,283 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:50,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:50,285 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:50,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:23:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:50,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:23:50,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:50,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:50,815 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:50,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156012915] [2021-11-07 01:23:50,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156012915] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:50,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:50,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:23:50,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703622914] [2021-11-07 01:23:50,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:23:50,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:50,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:23:50,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:23:50,818 INFO L87 Difference]: Start difference. First operand 257 states and 303 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:50,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:50,871 INFO L93 Difference]: Finished difference Result 313 states and 359 transitions. [2021-11-07 01:23:50,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:23:50,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-07 01:23:50,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:50,874 INFO L225 Difference]: With dead ends: 313 [2021-11-07 01:23:50,874 INFO L226 Difference]: Without dead ends: 313 [2021-11-07 01:23:50,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:23:50,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-07 01:23:50,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 259. [2021-11-07 01:23:50,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 183 states have (on average 1.6666666666666667) internal successors, (305), 258 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:50,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 305 transitions. [2021-11-07 01:23:50,888 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 305 transitions. Word has length 28 [2021-11-07 01:23:50,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:50,888 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 305 transitions. [2021-11-07 01:23:50,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:50,889 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 305 transitions. [2021-11-07 01:23:50,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:23:50,896 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:50,896 INFO L513 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] [2021-11-07 01:23:50,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:51,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:51,111 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 01:23:51,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:51,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1950179379, now seen corresponding path program 1 times [2021-11-07 01:23:51,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:51,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005592750] [2021-11-07 01:23:51,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:51,114 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:51,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:51,115 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:51,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:23:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:51,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:23:51,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:51,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:23:51,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:51,891 INFO L354 Elim1Store]: treesize reduction 27, result has 42.6 percent of original size [2021-11-07 01:23:51,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 36 [2021-11-07 01:23:53,082 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-07 01:23:53,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 61 [2021-11-07 01:23:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:53,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:58,688 INFO L354 Elim1Store]: treesize reduction -1, result has 104.0 percent of original size [2021-11-07 01:23:58,689 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 223 treesize of output 236 [2021-11-07 01:23:59,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:59,363 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:59,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005592750] [2021-11-07 01:23:59,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005592750] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:59,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:59,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 20 [2021-11-07 01:23:59,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127542948] [2021-11-07 01:23:59,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 01:23:59,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:59,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 01:23:59,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=365, Unknown=2, NotChecked=0, Total=462 [2021-11-07 01:23:59,366 INFO L87 Difference]: Start difference. First operand 259 states and 305 transitions. Second operand has 22 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:10,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:10,760 INFO L93 Difference]: Finished difference Result 360 states and 409 transitions. [2021-11-07 01:24:10,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:24:10,761 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-07 01:24:10,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:10,763 INFO L225 Difference]: With dead ends: 360 [2021-11-07 01:24:10,764 INFO L226 Difference]: Without dead ends: 360 [2021-11-07 01:24:10,765 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=233, Invalid=695, Unknown=2, NotChecked=0, Total=930 [2021-11-07 01:24:10,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-11-07 01:24:10,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 267. [2021-11-07 01:24:10,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 191 states have (on average 1.6649214659685865) internal successors, (318), 266 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:10,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 318 transitions. [2021-11-07 01:24:10,774 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 318 transitions. Word has length 30 [2021-11-07 01:24:10,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:10,775 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 318 transitions. [2021-11-07 01:24:10,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:10,776 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 318 transitions. [2021-11-07 01:24:10,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:24:10,776 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:10,776 INFO L513 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] [2021-11-07 01:24:10,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:11,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:11,004 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 01:24:11,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:11,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1950179378, now seen corresponding path program 1 times [2021-11-07 01:24:11,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:11,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141289489] [2021-11-07 01:24:11,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:11,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:11,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:11,006 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:11,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:24:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:11,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 01:24:11,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:11,537 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-11-07 01:24:11,537 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 2 case distinctions, treesize of input 22 treesize of output 35 [2021-11-07 01:24:11,558 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 01:24:11,559 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 1 case distinctions, treesize of input 35 treesize of output 36 [2021-11-07 01:24:11,840 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-07 01:24:11,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 60 [2021-11-07 01:24:11,890 INFO L354 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-11-07 01:24:11,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 49 treesize of output 71 [2021-11-07 01:24:12,790 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-11-07 01:24:12,791 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 2 case distinctions, treesize of input 29 treesize of output 37 [2021-11-07 01:24:12,805 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:24:12,806 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 34 treesize of output 34 [2021-11-07 01:24:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:14,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:16,049 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-07 01:24:16,049 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 37 treesize of output 36 [2021-11-07 01:24:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:31,933 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:31,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141289489] [2021-11-07 01:24:31,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141289489] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:31,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:31,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 6] imperfect sequences [] total 14 [2021-11-07 01:24:31,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446304944] [2021-11-07 01:24:31,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 01:24:31,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:31,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 01:24:31,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=169, Unknown=5, NotChecked=0, Total=240 [2021-11-07 01:24:31,935 INFO L87 Difference]: Start difference. First operand 267 states and 318 transitions. Second operand has 16 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:34,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:34,333 INFO L93 Difference]: Finished difference Result 287 states and 335 transitions. [2021-11-07 01:24:34,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:24:34,334 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-07 01:24:34,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:34,337 INFO L225 Difference]: With dead ends: 287 [2021-11-07 01:24:34,337 INFO L226 Difference]: Without dead ends: 287 [2021-11-07 01:24:34,338 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=143, Invalid=314, Unknown=5, NotChecked=0, Total=462 [2021-11-07 01:24:34,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-07 01:24:34,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 265. [2021-11-07 01:24:34,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 191 states have (on average 1.643979057591623) internal successors, (314), 264 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:34,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 314 transitions. [2021-11-07 01:24:34,347 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 314 transitions. Word has length 30 [2021-11-07 01:24:34,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:34,347 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 314 transitions. [2021-11-07 01:24:34,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:34,348 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 314 transitions. [2021-11-07 01:24:34,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:24:34,348 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:34,348 INFO L513 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] [2021-11-07 01:24:34,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-07 01:24:34,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:34,583 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr95ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 01:24:34,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:34,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1950177298, now seen corresponding path program 1 times [2021-11-07 01:24:34,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:34,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345866124] [2021-11-07 01:24:34,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:34,585 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:34,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:34,586 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:34,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:24:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:35,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:24:35,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:35,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:35,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:35,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:35,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345866124] [2021-11-07 01:24:35,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345866124] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:35,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:35,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:24:35,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863944723] [2021-11-07 01:24:35,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:24:35,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:35,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:24:35,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:24:35,264 INFO L87 Difference]: Start difference. First operand 265 states and 314 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:35,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:35,291 INFO L93 Difference]: Finished difference Result 267 states and 313 transitions. [2021-11-07 01:24:35,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:24:35,292 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-07 01:24:35,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:35,294 INFO L225 Difference]: With dead ends: 267 [2021-11-07 01:24:35,295 INFO L226 Difference]: Without dead ends: 267 [2021-11-07 01:24:35,295 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:24:35,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-07 01:24:35,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2021-11-07 01:24:35,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 191 states have (on average 1.6335078534031413) internal successors, (312), 264 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:35,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 312 transitions. [2021-11-07 01:24:35,304 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 312 transitions. Word has length 30 [2021-11-07 01:24:35,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:35,304 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 312 transitions. [2021-11-07 01:24:35,304 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:35,305 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 312 transitions. [2021-11-07 01:24:35,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:24:35,305 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:35,305 INFO L513 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] [2021-11-07 01:24:35,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-07 01:24:35,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:35,522 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 01:24:35,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:35,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1455248043, now seen corresponding path program 1 times [2021-11-07 01:24:35,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:35,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368281940] [2021-11-07 01:24:35,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:35,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:35,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:35,525 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:35,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a93ac596-61e8-4670-9d70-e7d4632c0ab0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 01:24:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:36,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:24:36,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:36,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:36,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:36,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:36,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2021-11-07 01:24:36,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:36,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 91 [2021-11-07 01:24:40,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:40,948 INFO L244 Elim1Store]: Index analysis took 154 ms [2021-11-07 01:24:40,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 66 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 143 [2021-11-07 01:24:51,221 INFO L354 Elim1Store]: treesize reduction 2685, result has 4.9 percent of original size [2021-11-07 01:24:51,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 81 case distinctions, treesize of input 151 treesize of output 195 [2021-11-07 01:25:03,511 WARN L207 SmtUtils]: Spent 6.09 s on a formula simplification that was a NOOP. DAG size: 93 [2021-11-07 01:25:04,072 INFO L354 Elim1Store]: treesize reduction 1410, result has 0.1 percent of original size [2021-11-07 01:25:04,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 190 treesize of output 74 [2021-11-07 01:25:04,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:04,126 INFO L328 TraceCheckSpWp]: Computing backward predicates...