./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:20:04,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:20:04,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:20:04,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:20:04,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:20:04,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:20:04,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:20:04,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:20:04,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:20:04,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:20:04,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:20:04,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:20:04,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:20:04,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:20:04,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:20:04,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:20:04,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:20:04,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:20:04,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:20:04,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:20:04,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:20:04,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:20:04,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:20:04,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:20:04,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:20:04,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:20:04,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:20:04,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:20:04,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:20:04,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:20:04,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:20:04,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:20:04,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:20:04,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:20:04,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:20:04,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:20:04,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:20:04,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:20:04,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:20:04,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:20:04,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:20:04,588 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 18:20:04,605 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:20:04,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:20:04,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:20:04,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:20:04,606 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:20:04,607 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:20:04,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:20:04,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:20:04,607 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:20:04,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:20:04,608 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:20:04,608 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 18:20:04,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:20:04,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:20:04,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:20:04,608 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 18:20:04,608 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 18:20:04,608 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 18:20:04,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:20:04,609 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 18:20:04,609 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:20:04,609 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:20:04,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:20:04,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:20:04,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:20:04,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:20:04,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:20:04,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:20:04,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:20:04,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:20:04,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:20:04,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 [2021-12-06 18:20:04,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:20:04,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:20:04,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:20:04,812 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:20:04,813 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:20:04,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2021-12-06 18:20:04,859 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/data/170bf57d2/8e7ca77320b3491c80b6e62b97199f8c/FLAGf5ef4b23d [2021-12-06 18:20:05,319 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:20:05,320 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2021-12-06 18:20:05,332 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/data/170bf57d2/8e7ca77320b3491c80b6e62b97199f8c/FLAGf5ef4b23d [2021-12-06 18:20:05,345 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/data/170bf57d2/8e7ca77320b3491c80b6e62b97199f8c [2021-12-06 18:20:05,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:20:05,349 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:20:05,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:20:05,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:20:05,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:20:05,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:20:05" (1/1) ... [2021-12-06 18:20:05,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e61357b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:20:05, skipping insertion in model container [2021-12-06 18:20:05,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:20:05" (1/1) ... [2021-12-06 18:20:05,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:20:05,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:20:05,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:20:05,711 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.IllegalArgumentException: This array type is incomplete! Cannot extract actual dimensions. at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CTranslationUtil.getConstantFirstDimensionOfArray(CTranslationUtil.java:210) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.InitializationHandler.constructIndexToInitInfo(InitializationHandler.java:1272) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.InitializationHandler.constructInitializerInfo(InitializationHandler.java:1228) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.InitializationHandler.initialize(InitializationHandler.java:236) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.InitializationHandler.initialize(InitializationHandler.java:207) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.PostProcessor.createUltimateInitProcedure(PostProcessor.java:805) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.PostProcessor.postProcess(PostProcessor.java:211) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:622) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-06 18:20:05,715 INFO L158 Benchmark]: Toolchain (without parser) took 365.08ms. Allocated memory is still 98.6MB. Free memory was 60.3MB in the beginning and 69.4MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 18:20:05,716 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 98.6MB. Free memory was 78.7MB in the beginning and 78.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:20:05,717 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.88ms. Allocated memory is still 98.6MB. Free memory was 60.2MB in the beginning and 69.4MB in the end (delta: -9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 18:20:05,718 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 98.6MB. Free memory was 78.7MB in the beginning and 78.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 362.88ms. Allocated memory is still 98.6MB. Free memory was 60.2MB in the beginning and 69.4MB in the end (delta: -9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: IllegalArgumentException: This array type is incomplete! Cannot extract actual dimensions. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: IllegalArgumentException: This array type is incomplete! Cannot extract actual dimensions.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CTranslationUtil.getConstantFirstDimensionOfArray(CTranslationUtil.java:210) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:20:07,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:20:07,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:20:07,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:20:07,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:20:07,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:20:07,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:20:07,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:20:07,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:20:07,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:20:07,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:20:07,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:20:07,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:20:07,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:20:07,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:20:07,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:20:07,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:20:07,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:20:07,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:20:07,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:20:07,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:20:07,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:20:07,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:20:07,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:20:07,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:20:07,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:20:07,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:20:07,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:20:07,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:20:07,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:20:07,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:20:07,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:20:07,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:20:07,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:20:07,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:20:07,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:20:07,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:20:07,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:20:07,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:20:07,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:20:07,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:20:07,157 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-06 18:20:07,181 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:20:07,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:20:07,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:20:07,182 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:20:07,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:20:07,182 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:20:07,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:20:07,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:20:07,183 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:20:07,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:20:07,183 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:20:07,184 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 18:20:07,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:20:07,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:20:07,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:20:07,184 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 18:20:07,184 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 18:20:07,184 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 18:20:07,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:20:07,185 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 18:20:07,185 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 18:20:07,185 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 18:20:07,185 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:20:07,185 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:20:07,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:20:07,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:20:07,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:20:07,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:20:07,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:20:07,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:20:07,186 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 18:20:07,186 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 18:20:07,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:20:07,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 18:20:07,187 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_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 [2021-12-06 18:20:07,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:20:07,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:20:07,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:20:07,453 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:20:07,454 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:20:07,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2021-12-06 18:20:07,497 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/data/9f120435b/9301a79264b64c8f95e15896afd8c853/FLAG385aa3f05 [2021-12-06 18:20:07,959 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:20:07,960 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2021-12-06 18:20:07,975 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/data/9f120435b/9301a79264b64c8f95e15896afd8c853/FLAG385aa3f05 [2021-12-06 18:20:07,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/data/9f120435b/9301a79264b64c8f95e15896afd8c853 [2021-12-06 18:20:07,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:20:07,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:20:07,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:20:07,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:20:07,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:20:07,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:20:07" (1/1) ... [2021-12-06 18:20:07,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cb7bb2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:20:07, skipping insertion in model container [2021-12-06 18:20:07,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:20:07" (1/1) ... [2021-12-06 18:20:08,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:20:08,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:20:08,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:20:08,409 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-06 18:20:08,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:20:08,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:20:08,480 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:20:08,531 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:20:08,577 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:20:08,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:20:08 WrapperNode [2021-12-06 18:20:08,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:20:08,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:20:08,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:20:08,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:20:08,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:20:08" (1/1) ... [2021-12-06 18:20:08,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:20:08" (1/1) ... [2021-12-06 18:20:08,638 INFO L137 Inliner]: procedures = 175, calls = 119, calls flagged for inlining = 30, calls inlined = 15, statements flattened = 198 [2021-12-06 18:20:08,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:20:08,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:20:08,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:20:08,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:20:08,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:20:08" (1/1) ... [2021-12-06 18:20:08,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:20:08" (1/1) ... [2021-12-06 18:20:08,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:20:08" (1/1) ... [2021-12-06 18:20:08,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:20:08" (1/1) ... [2021-12-06 18:20:08,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:20:08" (1/1) ... [2021-12-06 18:20:08,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:20:08" (1/1) ... [2021-12-06 18:20:08,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:20:08" (1/1) ... [2021-12-06 18:20:08,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:20:08,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:20:08,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:20:08,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:20:08,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:20:08" (1/1) ... [2021-12-06 18:20:08,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:20:08,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:20:08,708 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:20:08,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:20:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 18:20:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-12-06 18:20:08,739 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-12-06 18:20:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-12-06 18:20:08,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-12-06 18:20:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 18:20:08,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 18:20:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 18:20:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:20:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2021-12-06 18:20:08,739 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2021-12-06 18:20:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 18:20:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 18:20:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 18:20:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 18:20:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:20:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 18:20:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-12-06 18:20:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-12-06 18:20:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-06 18:20:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-06 18:20:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:20:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:20:08,862 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:20:08,863 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:20:09,449 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:20:09,456 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:20:09,457 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 18:20:09,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:20:09 BoogieIcfgContainer [2021-12-06 18:20:09,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:20:09,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:20:09,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:20:09,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:20:09,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:20:07" (1/3) ... [2021-12-06 18:20:09,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9d5cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:20:09, skipping insertion in model container [2021-12-06 18:20:09,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:20:08" (2/3) ... [2021-12-06 18:20:09,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9d5cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:20:09, skipping insertion in model container [2021-12-06 18:20:09,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:20:09" (3/3) ... [2021-12-06 18:20:09,464 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test23_1.i [2021-12-06 18:20:09,470 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:20:09,470 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 79 error locations. [2021-12-06 18:20:09,504 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:20:09,511 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:20:09,511 INFO L340 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2021-12-06 18:20:09,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 111 states have (on average 1.8468468468468469) internal successors, (205), 190 states have internal predecessors, (205), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 18:20:09,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 18:20:09,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:09,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:09,535 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:09,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:09,540 INFO L85 PathProgramCache]: Analyzing trace with hash 441980658, now seen corresponding path program 1 times [2021-12-06 18:20:09,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:09,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410980608] [2021-12-06 18:20:09,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:09,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:09,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:09,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:09,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 18:20:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:09,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 18:20:09,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:09,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:20:09,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:09,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:09,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:09,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410980608] [2021-12-06 18:20:09,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410980608] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:09,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:09,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:20:09,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342638007] [2021-12-06 18:20:09,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:09,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:20:09,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:09,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:20:09,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:20:09,775 INFO L87 Difference]: Start difference. First operand has 205 states, 111 states have (on average 1.8468468468468469) internal successors, (205), 190 states have internal predecessors, (205), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:20:10,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:10,436 INFO L93 Difference]: Finished difference Result 232 states and 249 transitions. [2021-12-06 18:20:10,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:20:10,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-06 18:20:10,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:10,450 INFO L225 Difference]: With dead ends: 232 [2021-12-06 18:20:10,450 INFO L226 Difference]: Without dead ends: 228 [2021-12-06 18:20:10,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:20:10,455 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 28 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:10,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 851 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 18:20:10,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-12-06 18:20:10,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 212. [2021-12-06 18:20:10,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 117 states have (on average 1.794871794871795) internal successors, (210), 195 states have internal predecessors, (210), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2021-12-06 18:20:10,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 229 transitions. [2021-12-06 18:20:10,507 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 229 transitions. Word has length 12 [2021-12-06 18:20:10,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:10,507 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 229 transitions. [2021-12-06 18:20:10,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:20:10,507 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 229 transitions. [2021-12-06 18:20:10,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 18:20:10,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:10,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:10,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:20:10,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:10,710 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:10,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:10,713 INFO L85 PathProgramCache]: Analyzing trace with hash 441980659, now seen corresponding path program 1 times [2021-12-06 18:20:10,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:10,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589019411] [2021-12-06 18:20:10,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:10,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:10,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:10,720 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:10,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 18:20:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:10,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 18:20:10,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:10,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:20:10,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:10,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:10,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:10,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589019411] [2021-12-06 18:20:10,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589019411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:10,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:10,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:20:10,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839382333] [2021-12-06 18:20:10,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:10,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:20:10,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:10,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:20:10,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:20:10,908 INFO L87 Difference]: Start difference. First operand 212 states and 229 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:20:11,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:11,615 INFO L93 Difference]: Finished difference Result 237 states and 253 transitions. [2021-12-06 18:20:11,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:20:11,616 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-06 18:20:11,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:11,618 INFO L225 Difference]: With dead ends: 237 [2021-12-06 18:20:11,618 INFO L226 Difference]: Without dead ends: 237 [2021-12-06 18:20:11,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:20:11,619 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 35 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:11,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 1103 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 18:20:11,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-12-06 18:20:11,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 212. [2021-12-06 18:20:11,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 117 states have (on average 1.7777777777777777) internal successors, (208), 195 states have internal predecessors, (208), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2021-12-06 18:20:11,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 227 transitions. [2021-12-06 18:20:11,630 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 227 transitions. Word has length 12 [2021-12-06 18:20:11,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:11,631 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 227 transitions. [2021-12-06 18:20:11,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:20:11,631 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 227 transitions. [2021-12-06 18:20:11,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 18:20:11,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:11,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:11,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 18:20:11,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:11,833 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:11,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:11,835 INFO L85 PathProgramCache]: Analyzing trace with hash -2110176303, now seen corresponding path program 1 times [2021-12-06 18:20:11,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:11,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179895218] [2021-12-06 18:20:11,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:11,839 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:11,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:11,842 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:11,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 18:20:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:11,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 18:20:11,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:11,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:11,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:11,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:11,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179895218] [2021-12-06 18:20:11,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179895218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:11,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:11,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:20:11,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045982148] [2021-12-06 18:20:11,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:11,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:20:11,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:11,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:20:11,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:20:11,958 INFO L87 Difference]: Start difference. First operand 212 states and 227 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:20:11,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:11,982 INFO L93 Difference]: Finished difference Result 224 states and 239 transitions. [2021-12-06 18:20:11,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:20:11,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-06 18:20:11,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:11,984 INFO L225 Difference]: With dead ends: 224 [2021-12-06 18:20:11,984 INFO L226 Difference]: Without dead ends: 224 [2021-12-06 18:20:11,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:20:11,985 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 20 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:11,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 846 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:20:11,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-12-06 18:20:11,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 203. [2021-12-06 18:20:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 113 states have (on average 1.7699115044247788) internal successors, (200), 187 states have internal predecessors, (200), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-06 18:20:11,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 217 transitions. [2021-12-06 18:20:11,995 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 217 transitions. Word has length 12 [2021-12-06 18:20:11,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:11,995 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 217 transitions. [2021-12-06 18:20:11,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:20:11,995 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 217 transitions. [2021-12-06 18:20:11,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 18:20:11,996 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:11,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:12,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 18:20:12,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:12,198 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:12,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:12,200 INFO L85 PathProgramCache]: Analyzing trace with hash 441895411, now seen corresponding path program 1 times [2021-12-06 18:20:12,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:12,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540246127] [2021-12-06 18:20:12,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:12,202 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:12,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:12,205 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:12,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 18:20:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:12,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:20:12,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:12,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:12,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:12,347 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:12,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540246127] [2021-12-06 18:20:12,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540246127] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:12,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:12,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:20:12,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475825980] [2021-12-06 18:20:12,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:12,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:20:12,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:12,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:20:12,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:20:12,349 INFO L87 Difference]: Start difference. First operand 203 states and 217 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:20:12,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:12,377 INFO L93 Difference]: Finished difference Result 224 states and 238 transitions. [2021-12-06 18:20:12,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:20:12,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-06 18:20:12,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:12,379 INFO L225 Difference]: With dead ends: 224 [2021-12-06 18:20:12,379 INFO L226 Difference]: Without dead ends: 224 [2021-12-06 18:20:12,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:20:12,380 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 129 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:12,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 778 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:20:12,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-12-06 18:20:12,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 203. [2021-12-06 18:20:12,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 113 states have (on average 1.761061946902655) internal successors, (199), 187 states have internal predecessors, (199), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-06 18:20:12,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 216 transitions. [2021-12-06 18:20:12,392 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 216 transitions. Word has length 12 [2021-12-06 18:20:12,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:12,392 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 216 transitions. [2021-12-06 18:20:12,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:20:12,393 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 216 transitions. [2021-12-06 18:20:12,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 18:20:12,393 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:12,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:12,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 18:20:12,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:12,595 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:12,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:12,596 INFO L85 PathProgramCache]: Analyzing trace with hash -2110261550, now seen corresponding path program 1 times [2021-12-06 18:20:12,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:12,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532459235] [2021-12-06 18:20:12,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:12,597 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:12,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:12,598 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:12,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 18:20:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:12,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:20:12,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:12,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:12,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:12,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:12,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532459235] [2021-12-06 18:20:12,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532459235] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:12,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:12,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:20:12,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336125137] [2021-12-06 18:20:12,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:12,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:20:12,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:12,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:20:12,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:20:12,697 INFO L87 Difference]: Start difference. First operand 203 states and 216 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:20:12,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:12,727 INFO L93 Difference]: Finished difference Result 208 states and 220 transitions. [2021-12-06 18:20:12,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:20:12,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-06 18:20:12,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:12,729 INFO L225 Difference]: With dead ends: 208 [2021-12-06 18:20:12,729 INFO L226 Difference]: Without dead ends: 208 [2021-12-06 18:20:12,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:20:12,731 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 112 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:12,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 726 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:20:12,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-12-06 18:20:12,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 205. [2021-12-06 18:20:12,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 115 states have (on average 1.7478260869565216) internal successors, (201), 189 states have internal predecessors, (201), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-06 18:20:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 218 transitions. [2021-12-06 18:20:12,739 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 218 transitions. Word has length 12 [2021-12-06 18:20:12,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:12,740 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 218 transitions. [2021-12-06 18:20:12,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:20:12,740 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 218 transitions. [2021-12-06 18:20:12,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 18:20:12,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:12,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:12,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 18:20:12,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:12,941 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:12,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:12,942 INFO L85 PathProgramCache]: Analyzing trace with hash -993578524, now seen corresponding path program 1 times [2021-12-06 18:20:12,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:12,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033334265] [2021-12-06 18:20:12,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:12,943 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:12,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:12,944 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:12,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 18:20:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:12,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:20:12,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:13,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:13,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:13,001 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:13,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033334265] [2021-12-06 18:20:13,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033334265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:13,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:13,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:20:13,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771924249] [2021-12-06 18:20:13,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:13,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:20:13,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:13,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:20:13,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:20:13,003 INFO L87 Difference]: Start difference. First operand 205 states and 218 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:20:13,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:13,287 INFO L93 Difference]: Finished difference Result 217 states and 232 transitions. [2021-12-06 18:20:13,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:20:13,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-12-06 18:20:13,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:13,289 INFO L225 Difference]: With dead ends: 217 [2021-12-06 18:20:13,289 INFO L226 Difference]: Without dead ends: 209 [2021-12-06 18:20:13,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:20:13,290 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 51 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:13,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 402 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:20:13,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-12-06 18:20:13,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 199. [2021-12-06 18:20:13,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 110 states have (on average 1.7727272727272727) internal successors, (195), 184 states have internal predecessors, (195), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 18:20:13,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 211 transitions. [2021-12-06 18:20:13,298 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 211 transitions. Word has length 13 [2021-12-06 18:20:13,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:13,298 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 211 transitions. [2021-12-06 18:20:13,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:20:13,299 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 211 transitions. [2021-12-06 18:20:13,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 18:20:13,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:13,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:13,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-06 18:20:13,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:13,501 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:13,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:13,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1907571031, now seen corresponding path program 1 times [2021-12-06 18:20:13,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:13,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447256184] [2021-12-06 18:20:13,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:13,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:13,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:13,507 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:13,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 18:20:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:13,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 18:20:13,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:15,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:15,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:20:15,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:15,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:15,768 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:15,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447256184] [2021-12-06 18:20:15,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447256184] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:15,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:15,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:20:15,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866262791] [2021-12-06 18:20:15,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:15,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:20:15,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:15,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:20:15,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=38, Unknown=1, NotChecked=0, Total=56 [2021-12-06 18:20:15,770 INFO L87 Difference]: Start difference. First operand 199 states and 211 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:20:18,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:18,338 INFO L93 Difference]: Finished difference Result 209 states and 224 transitions. [2021-12-06 18:20:18,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:20:18,338 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2021-12-06 18:20:18,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:18,339 INFO L225 Difference]: With dead ends: 209 [2021-12-06 18:20:18,340 INFO L226 Difference]: Without dead ends: 209 [2021-12-06 18:20:18,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=38, Invalid=92, Unknown=2, NotChecked=0, Total=132 [2021-12-06 18:20:18,340 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 62 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:18,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 446 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 250 Invalid, 0 Unknown, 122 Unchecked, 0.5s Time] [2021-12-06 18:20:18,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-12-06 18:20:18,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 198. [2021-12-06 18:20:18,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 110 states have (on average 1.7636363636363637) internal successors, (194), 183 states have internal predecessors, (194), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 18:20:18,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 210 transitions. [2021-12-06 18:20:18,346 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 210 transitions. Word has length 16 [2021-12-06 18:20:18,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:18,346 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 210 transitions. [2021-12-06 18:20:18,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:20:18,346 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 210 transitions. [2021-12-06 18:20:18,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 18:20:18,347 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:18,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:18,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 18:20:18,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:18,547 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:18,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:18,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1907571030, now seen corresponding path program 1 times [2021-12-06 18:20:18,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:18,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853289859] [2021-12-06 18:20:18,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:18,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:18,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:18,549 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:18,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 18:20:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:18,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 18:20:18,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:18,697 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:20:18,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-12-06 18:20:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:18,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:18,743 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:18,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853289859] [2021-12-06 18:20:18,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853289859] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:18,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:18,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:20:18,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238009652] [2021-12-06 18:20:18,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:18,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:20:18,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:18,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:20:18,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:20:18,745 INFO L87 Difference]: Start difference. First operand 198 states and 210 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:20:19,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:19,345 INFO L93 Difference]: Finished difference Result 250 states and 265 transitions. [2021-12-06 18:20:19,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:20:19,345 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-12-06 18:20:19,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:19,346 INFO L225 Difference]: With dead ends: 250 [2021-12-06 18:20:19,346 INFO L226 Difference]: Without dead ends: 250 [2021-12-06 18:20:19,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:20:19,347 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 198 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:19,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 581 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 408 Invalid, 0 Unknown, 137 Unchecked, 0.5s Time] [2021-12-06 18:20:19,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-12-06 18:20:19,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 208. [2021-12-06 18:20:19,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 119 states have (on average 1.7478991596638656) internal successors, (208), 192 states have internal predecessors, (208), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-06 18:20:19,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 226 transitions. [2021-12-06 18:20:19,353 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 226 transitions. Word has length 16 [2021-12-06 18:20:19,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:19,353 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 226 transitions. [2021-12-06 18:20:19,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:20:19,354 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 226 transitions. [2021-12-06 18:20:19,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 18:20:19,354 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:19,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:19,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 18:20:19,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:19,556 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:19,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:19,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1544157348, now seen corresponding path program 1 times [2021-12-06 18:20:19,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:19,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151730764] [2021-12-06 18:20:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:19,560 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:19,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:19,562 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:19,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 18:20:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:19,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:20:19,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:19,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:20:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:19,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:19,767 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:19,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151730764] [2021-12-06 18:20:19,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151730764] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:19,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:19,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:20:19,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988975334] [2021-12-06 18:20:19,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:19,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:20:19,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:19,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:20:19,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:20:19,769 INFO L87 Difference]: Start difference. First operand 208 states and 226 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:20:20,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:20,306 INFO L93 Difference]: Finished difference Result 264 states and 290 transitions. [2021-12-06 18:20:20,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:20:20,307 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2021-12-06 18:20:20,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:20,308 INFO L225 Difference]: With dead ends: 264 [2021-12-06 18:20:20,309 INFO L226 Difference]: Without dead ends: 264 [2021-12-06 18:20:20,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:20:20,309 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 71 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:20,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 653 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 18:20:20,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-12-06 18:20:20,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 236. [2021-12-06 18:20:20,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 149 states have (on average 1.7718120805369129) internal successors, (264), 220 states have internal predecessors, (264), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-06 18:20:20,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 282 transitions. [2021-12-06 18:20:20,316 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 282 transitions. Word has length 25 [2021-12-06 18:20:20,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:20,316 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 282 transitions. [2021-12-06 18:20:20,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:20:20,316 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 282 transitions. [2021-12-06 18:20:20,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 18:20:20,317 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:20,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:20,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-06 18:20:20,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:20,519 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:20,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:20,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1544157349, now seen corresponding path program 1 times [2021-12-06 18:20:20,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:20,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631906697] [2021-12-06 18:20:20,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:20,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:20,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:20,524 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:20,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 18:20:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:20,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 18:20:20,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:20,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:20:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:20,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:20,677 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:20,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631906697] [2021-12-06 18:20:20,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631906697] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:20,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:20,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:20:20,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837880533] [2021-12-06 18:20:20,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:20,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:20:20,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:20,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:20:20,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:20:20,678 INFO L87 Difference]: Start difference. First operand 236 states and 282 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:20:21,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:21,433 INFO L93 Difference]: Finished difference Result 296 states and 325 transitions. [2021-12-06 18:20:21,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:20:21,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2021-12-06 18:20:21,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:21,436 INFO L225 Difference]: With dead ends: 296 [2021-12-06 18:20:21,436 INFO L226 Difference]: Without dead ends: 296 [2021-12-06 18:20:21,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:20:21,437 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 105 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:21,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 651 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 18:20:21,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-12-06 18:20:21,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 238. [2021-12-06 18:20:21,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 152 states have (on average 1.75) internal successors, (266), 221 states have internal predecessors, (266), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:20:21,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 287 transitions. [2021-12-06 18:20:21,443 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 287 transitions. Word has length 25 [2021-12-06 18:20:21,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:21,444 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 287 transitions. [2021-12-06 18:20:21,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:20:21,444 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 287 transitions. [2021-12-06 18:20:21,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 18:20:21,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:21,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:21,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-06 18:20:21,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:21,646 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:21,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:21,648 INFO L85 PathProgramCache]: Analyzing trace with hash -2123399988, now seen corresponding path program 1 times [2021-12-06 18:20:21,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:21,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002325694] [2021-12-06 18:20:21,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:21,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:21,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:21,652 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:21,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 18:20:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:21,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 18:20:21,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:21,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:21,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:21,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002325694] [2021-12-06 18:20:21,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002325694] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:21,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:21,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:20:21,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098795967] [2021-12-06 18:20:21,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:21,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:20:21,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:21,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:20:21,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:20:21,816 INFO L87 Difference]: Start difference. First operand 238 states and 287 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:20:21,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:21,887 INFO L93 Difference]: Finished difference Result 238 states and 286 transitions. [2021-12-06 18:20:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:20:21,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-12-06 18:20:21,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:21,889 INFO L225 Difference]: With dead ends: 238 [2021-12-06 18:20:21,889 INFO L226 Difference]: Without dead ends: 238 [2021-12-06 18:20:21,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:20:21,890 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 120 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:21,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 834 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:20:21,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-12-06 18:20:21,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2021-12-06 18:20:21,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 152 states have (on average 1.743421052631579) internal successors, (265), 221 states have internal predecessors, (265), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:20:21,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 286 transitions. [2021-12-06 18:20:21,899 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 286 transitions. Word has length 27 [2021-12-06 18:20:21,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:21,899 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 286 transitions. [2021-12-06 18:20:21,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:20:21,899 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 286 transitions. [2021-12-06 18:20:21,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 18:20:21,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:21,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:21,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-06 18:20:22,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:22,102 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:22,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:22,103 INFO L85 PathProgramCache]: Analyzing trace with hash -308565232, now seen corresponding path program 1 times [2021-12-06 18:20:22,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:22,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415859767] [2021-12-06 18:20:22,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:22,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:22,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:22,108 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:22,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 18:20:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:22,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 18:20:22,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:22,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:20:22,392 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:20:22,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-12-06 18:20:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:22,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:22,425 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:22,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415859767] [2021-12-06 18:20:22,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415859767] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:22,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:22,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:20:22,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750170931] [2021-12-06 18:20:22,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:22,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:20:22,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:22,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:20:22,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:20:22,426 INFO L87 Difference]: Start difference. First operand 238 states and 286 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:20:22,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:22,941 INFO L93 Difference]: Finished difference Result 333 states and 389 transitions. [2021-12-06 18:20:22,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:20:22,942 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2021-12-06 18:20:22,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:22,944 INFO L225 Difference]: With dead ends: 333 [2021-12-06 18:20:22,944 INFO L226 Difference]: Without dead ends: 333 [2021-12-06 18:20:22,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:20:22,944 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 231 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:22,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 525 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 320 Invalid, 0 Unknown, 120 Unchecked, 0.5s Time] [2021-12-06 18:20:22,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-12-06 18:20:22,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 251. [2021-12-06 18:20:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 168 states have (on average 1.6726190476190477) internal successors, (281), 234 states have internal predecessors, (281), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:20:22,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 302 transitions. [2021-12-06 18:20:22,952 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 302 transitions. Word has length 33 [2021-12-06 18:20:22,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:22,952 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 302 transitions. [2021-12-06 18:20:22,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:20:22,953 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 302 transitions. [2021-12-06 18:20:22,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 18:20:22,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:22,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:22,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-06 18:20:23,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:23,154 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:23,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:23,154 INFO L85 PathProgramCache]: Analyzing trace with hash -308565231, now seen corresponding path program 1 times [2021-12-06 18:20:23,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:23,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648722193] [2021-12-06 18:20:23,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:23,155 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:23,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:23,156 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:23,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 18:20:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:23,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 18:20:23,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:23,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:20:23,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:20:25,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:25,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:20:25,394 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:20:25,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-12-06 18:20:25,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:25,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:25,456 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:25,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [648722193] [2021-12-06 18:20:25,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [648722193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:25,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:25,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:20:25,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888233299] [2021-12-06 18:20:25,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:25,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:20:25,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:25,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:20:25,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=29, Unknown=1, NotChecked=0, Total=42 [2021-12-06 18:20:25,457 INFO L87 Difference]: Start difference. First operand 251 states and 302 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:20:26,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:26,255 INFO L93 Difference]: Finished difference Result 328 states and 367 transitions. [2021-12-06 18:20:26,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:20:26,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2021-12-06 18:20:26,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:26,257 INFO L225 Difference]: With dead ends: 328 [2021-12-06 18:20:26,257 INFO L226 Difference]: Without dead ends: 328 [2021-12-06 18:20:26,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=22, Invalid=49, Unknown=1, NotChecked=0, Total=72 [2021-12-06 18:20:26,258 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 250 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:26,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 512 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 388 Invalid, 0 Unknown, 134 Unchecked, 0.8s Time] [2021-12-06 18:20:26,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-12-06 18:20:26,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 251. [2021-12-06 18:20:26,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 168 states have (on average 1.6428571428571428) internal successors, (276), 234 states have internal predecessors, (276), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:20:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 297 transitions. [2021-12-06 18:20:26,265 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 297 transitions. Word has length 33 [2021-12-06 18:20:26,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:26,265 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 297 transitions. [2021-12-06 18:20:26,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:20:26,266 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 297 transitions. [2021-12-06 18:20:26,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 18:20:26,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:26,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:26,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-06 18:20:26,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:26,467 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:26,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:26,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1238063083, now seen corresponding path program 1 times [2021-12-06 18:20:26,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:26,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964044798] [2021-12-06 18:20:26,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:26,471 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:26,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:26,472 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:26,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 18:20:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:26,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 18:20:26,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:26,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:26,933 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:26,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964044798] [2021-12-06 18:20:26,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964044798] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:26,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:26,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:20:26,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031369472] [2021-12-06 18:20:26,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:26,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:20:26,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:26,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:20:26,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:20:26,935 INFO L87 Difference]: Start difference. First operand 251 states and 297 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:20:26,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:26,963 INFO L93 Difference]: Finished difference Result 335 states and 385 transitions. [2021-12-06 18:20:26,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:20:26,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-12-06 18:20:26,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:26,966 INFO L225 Difference]: With dead ends: 335 [2021-12-06 18:20:26,966 INFO L226 Difference]: Without dead ends: 335 [2021-12-06 18:20:26,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:20:26,967 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 118 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:26,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 839 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 90 Unchecked, 0.0s Time] [2021-12-06 18:20:26,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-12-06 18:20:26,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 268. [2021-12-06 18:20:26,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 184 states have (on average 1.5978260869565217) internal successors, (294), 250 states have internal predecessors, (294), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:20:26,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 315 transitions. [2021-12-06 18:20:26,975 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 315 transitions. Word has length 36 [2021-12-06 18:20:26,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:26,976 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 315 transitions. [2021-12-06 18:20:26,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:20:26,976 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 315 transitions. [2021-12-06 18:20:26,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 18:20:26,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:26,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:26,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-06 18:20:27,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:27,178 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONARRAY_INDEX === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:27,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:27,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1238063271, now seen corresponding path program 1 times [2021-12-06 18:20:27,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:27,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823411957] [2021-12-06 18:20:27,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:27,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:27,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:27,184 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:27,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 18:20:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:27,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:20:27,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:27,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:27,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:27,380 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:27,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823411957] [2021-12-06 18:20:27,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823411957] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:27,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:27,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:20:27,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881387174] [2021-12-06 18:20:27,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:27,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:20:27,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:27,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:20:27,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:20:27,381 INFO L87 Difference]: Start difference. First operand 268 states and 315 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:20:27,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:27,397 INFO L93 Difference]: Finished difference Result 316 states and 367 transitions. [2021-12-06 18:20:27,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:20:27,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2021-12-06 18:20:27,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:27,399 INFO L225 Difference]: With dead ends: 316 [2021-12-06 18:20:27,399 INFO L226 Difference]: Without dead ends: 316 [2021-12-06 18:20:27,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:20:27,400 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 36 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:27,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 595 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:20:27,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-12-06 18:20:27,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 274. [2021-12-06 18:20:27,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 190 states have (on average 1.5789473684210527) internal successors, (300), 256 states have internal predecessors, (300), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:20:27,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 321 transitions. [2021-12-06 18:20:27,406 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 321 transitions. Word has length 36 [2021-12-06 18:20:27,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:27,407 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 321 transitions. [2021-12-06 18:20:27,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:20:27,407 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 321 transitions. [2021-12-06 18:20:27,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 18:20:27,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:27,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:27,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-06 18:20:27,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:27,608 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:27,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:27,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1119933624, now seen corresponding path program 1 times [2021-12-06 18:20:27,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:27,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605232075] [2021-12-06 18:20:27,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:27,609 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:27,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:27,610 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:27,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 18:20:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:27,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:20:27,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:27,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:27,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:27,727 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:27,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605232075] [2021-12-06 18:20:27,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605232075] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:27,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:27,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:20:27,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199618719] [2021-12-06 18:20:27,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:27,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:20:27,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:27,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:20:27,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:20:27,728 INFO L87 Difference]: Start difference. First operand 274 states and 321 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:20:27,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:27,746 INFO L93 Difference]: Finished difference Result 297 states and 346 transitions. [2021-12-06 18:20:27,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:20:27,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-12-06 18:20:27,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:27,748 INFO L225 Difference]: With dead ends: 297 [2021-12-06 18:20:27,748 INFO L226 Difference]: Without dead ends: 297 [2021-12-06 18:20:27,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:20:27,749 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 43 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:27,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 593 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:20:27,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-12-06 18:20:27,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 276. [2021-12-06 18:20:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 192 states have (on average 1.5729166666666667) internal successors, (302), 258 states have internal predecessors, (302), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:20:27,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 323 transitions. [2021-12-06 18:20:27,755 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 323 transitions. Word has length 40 [2021-12-06 18:20:27,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:27,755 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 323 transitions. [2021-12-06 18:20:27,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:20:27,755 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 323 transitions. [2021-12-06 18:20:27,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 18:20:27,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:27,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:27,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-06 18:20:27,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:27,956 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:27,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:27,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1780653040, now seen corresponding path program 1 times [2021-12-06 18:20:27,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:27,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580608328] [2021-12-06 18:20:27,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:27,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:27,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:27,958 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:27,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-06 18:20:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:28,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-06 18:20:28,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:28,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:28,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:20:28,239 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-06 18:20:28,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 33 [2021-12-06 18:20:28,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:28,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:20:28,567 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:20:28,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:20:28,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:28,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:28,730 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:28,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580608328] [2021-12-06 18:20:28,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580608328] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:28,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:28,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 18:20:28,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995094275] [2021-12-06 18:20:28,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:28,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 18:20:28,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:28,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 18:20:28,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:20:28,731 INFO L87 Difference]: Start difference. First operand 276 states and 323 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:20:29,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:29,908 INFO L93 Difference]: Finished difference Result 284 states and 331 transitions. [2021-12-06 18:20:29,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:20:29,908 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2021-12-06 18:20:29,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:29,910 INFO L225 Difference]: With dead ends: 284 [2021-12-06 18:20:29,910 INFO L226 Difference]: Without dead ends: 284 [2021-12-06 18:20:29,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:20:29,911 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 295 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 278 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:29,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 765 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 676 Invalid, 0 Unknown, 278 Unchecked, 1.0s Time] [2021-12-06 18:20:29,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-12-06 18:20:29,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 274. [2021-12-06 18:20:29,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 192 states have (on average 1.5625) internal successors, (300), 256 states have internal predecessors, (300), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:20:29,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 321 transitions. [2021-12-06 18:20:29,919 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 321 transitions. Word has length 42 [2021-12-06 18:20:29,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:29,920 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 321 transitions. [2021-12-06 18:20:29,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:20:29,920 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 321 transitions. [2021-12-06 18:20:29,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 18:20:29,920 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:29,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:29,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-06 18:20:30,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:30,122 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:30,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:30,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1780653039, now seen corresponding path program 1 times [2021-12-06 18:20:30,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:30,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757045966] [2021-12-06 18:20:30,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:30,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:30,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:30,128 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:30,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-06 18:20:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:30,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 18:20:30,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:30,371 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:20:30,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2021-12-06 18:20:30,540 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-06 18:20:30,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 23 [2021-12-06 18:20:30,620 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 7 treesize of output 5 [2021-12-06 18:20:30,738 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:20:30,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-12-06 18:20:31,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:31,343 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-06 18:20:31,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 29 [2021-12-06 18:20:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:31,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:31,653 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:31,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757045966] [2021-12-06 18:20:31,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757045966] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:31,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:31,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 18:20:31,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701438318] [2021-12-06 18:20:31,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:31,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 18:20:31,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:31,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 18:20:31,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-12-06 18:20:31,654 INFO L87 Difference]: Start difference. First operand 274 states and 321 transitions. Second operand has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:20:31,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:31,944 INFO L93 Difference]: Finished difference Result 284 states and 332 transitions. [2021-12-06 18:20:31,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 18:20:31,944 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2021-12-06 18:20:31,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:31,946 INFO L225 Difference]: With dead ends: 284 [2021-12-06 18:20:31,946 INFO L226 Difference]: Without dead ends: 284 [2021-12-06 18:20:31,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:20:31,947 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 29 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 418 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:31,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 1278 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 418 Unchecked, 0.2s Time] [2021-12-06 18:20:31,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-12-06 18:20:31,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 282. [2021-12-06 18:20:31,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 200 states have (on average 1.545) internal successors, (309), 264 states have internal predecessors, (309), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:20:31,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 330 transitions. [2021-12-06 18:20:31,952 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 330 transitions. Word has length 42 [2021-12-06 18:20:31,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:31,952 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 330 transitions. [2021-12-06 18:20:31,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:20:31,953 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 330 transitions. [2021-12-06 18:20:31,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 18:20:31,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:31,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:31,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-06 18:20:32,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:32,154 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONARRAY_INDEX === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:32,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:32,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1855865600, now seen corresponding path program 1 times [2021-12-06 18:20:32,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:32,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301541276] [2021-12-06 18:20:32,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:32,155 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:32,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:32,155 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:32,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-06 18:20:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:32,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 18:20:32,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:32,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 36 [2021-12-06 18:20:32,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 50 [2021-12-06 18:20:32,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:32,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 50 [2021-12-06 18:20:32,556 INFO L354 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2021-12-06 18:20:32,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 50 [2021-12-06 18:20:32,577 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-12-06 18:20:32,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 14 [2021-12-06 18:20:32,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:32,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:32,618 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:32,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301541276] [2021-12-06 18:20:32,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301541276] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:32,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:32,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:20:32,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498789502] [2021-12-06 18:20:32,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:32,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:20:32,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:32,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:20:32,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:20:32,619 INFO L87 Difference]: Start difference. First operand 282 states and 330 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:20:32,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:32,812 INFO L93 Difference]: Finished difference Result 290 states and 338 transitions. [2021-12-06 18:20:32,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:20:32,813 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2021-12-06 18:20:32,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:32,814 INFO L225 Difference]: With dead ends: 290 [2021-12-06 18:20:32,814 INFO L226 Difference]: Without dead ends: 290 [2021-12-06 18:20:32,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:20:32,815 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 50 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:32,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 710 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 0 Unknown, 17 Unchecked, 0.2s Time] [2021-12-06 18:20:32,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-12-06 18:20:32,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 281. [2021-12-06 18:20:32,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 200 states have (on average 1.535) internal successors, (307), 263 states have internal predecessors, (307), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:20:32,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 328 transitions. [2021-12-06 18:20:32,820 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 328 transitions. Word has length 43 [2021-12-06 18:20:32,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:32,821 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 328 transitions. [2021-12-06 18:20:32,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:20:32,821 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 328 transitions. [2021-12-06 18:20:32,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 18:20:32,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:32,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:32,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-12-06 18:20:33,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:33,022 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:33,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:33,023 INFO L85 PathProgramCache]: Analyzing trace with hash -634310522, now seen corresponding path program 1 times [2021-12-06 18:20:33,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:33,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091699609] [2021-12-06 18:20:33,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:33,026 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:33,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:33,029 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:33,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-06 18:20:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:33,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:20:33,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:33,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:33,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:33,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091699609] [2021-12-06 18:20:33,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091699609] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:33,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:33,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:20:33,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645970331] [2021-12-06 18:20:33,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:33,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:20:33,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:33,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:20:33,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:20:33,181 INFO L87 Difference]: Start difference. First operand 281 states and 328 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:20:33,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:33,197 INFO L93 Difference]: Finished difference Result 303 states and 349 transitions. [2021-12-06 18:20:33,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:20:33,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2021-12-06 18:20:33,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:33,199 INFO L225 Difference]: With dead ends: 303 [2021-12-06 18:20:33,199 INFO L226 Difference]: Without dead ends: 303 [2021-12-06 18:20:33,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:20:33,199 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 48 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:33,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 573 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:20:33,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-12-06 18:20:33,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 283. [2021-12-06 18:20:33,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 202 states have (on average 1.5247524752475248) internal successors, (308), 265 states have internal predecessors, (308), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:20:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 329 transitions. [2021-12-06 18:20:33,205 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 329 transitions. Word has length 43 [2021-12-06 18:20:33,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:33,205 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 329 transitions. [2021-12-06 18:20:33,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:20:33,205 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 329 transitions. [2021-12-06 18:20:33,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 18:20:33,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:33,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:33,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-12-06 18:20:33,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:33,407 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:33,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:33,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1697258563, now seen corresponding path program 1 times [2021-12-06 18:20:33,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:33,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223282030] [2021-12-06 18:20:33,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:33,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:33,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:33,413 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:33,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-06 18:20:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:33,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 18:20:33,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:33,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:20:33,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:33,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:33,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:33,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223282030] [2021-12-06 18:20:33,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223282030] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:33,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:33,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:20:33,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926183245] [2021-12-06 18:20:33,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:33,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:20:33,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:33,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:20:33,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:20:33,762 INFO L87 Difference]: Start difference. First operand 283 states and 329 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:20:34,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:34,507 INFO L93 Difference]: Finished difference Result 315 states and 346 transitions. [2021-12-06 18:20:34,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:20:34,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2021-12-06 18:20:34,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:34,509 INFO L225 Difference]: With dead ends: 315 [2021-12-06 18:20:34,509 INFO L226 Difference]: Without dead ends: 315 [2021-12-06 18:20:34,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:20:34,510 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 132 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:34,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 830 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 18:20:34,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-06 18:20:34,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 282. [2021-12-06 18:20:34,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 202 states have (on average 1.50990099009901) internal successors, (305), 264 states have internal predecessors, (305), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:20:34,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 326 transitions. [2021-12-06 18:20:34,515 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 326 transitions. Word has length 44 [2021-12-06 18:20:34,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:34,515 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 326 transitions. [2021-12-06 18:20:34,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:20:34,516 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 326 transitions. [2021-12-06 18:20:34,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 18:20:34,516 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:34,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:34,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-12-06 18:20:34,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:34,717 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:34,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:34,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1697258562, now seen corresponding path program 1 times [2021-12-06 18:20:34,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:34,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440903548] [2021-12-06 18:20:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:34,721 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:34,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:34,723 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:34,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-06 18:20:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:34,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 18:20:34,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:34,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:20:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:35,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:35,074 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:35,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440903548] [2021-12-06 18:20:35,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440903548] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:35,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:35,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:20:35,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234665985] [2021-12-06 18:20:35,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:35,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:20:35,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:35,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:20:35,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:20:35,076 INFO L87 Difference]: Start difference. First operand 282 states and 326 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:20:35,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:35,976 INFO L93 Difference]: Finished difference Result 351 states and 389 transitions. [2021-12-06 18:20:35,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:20:35,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2021-12-06 18:20:35,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:35,978 INFO L225 Difference]: With dead ends: 351 [2021-12-06 18:20:35,978 INFO L226 Difference]: Without dead ends: 351 [2021-12-06 18:20:35,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:20:35,979 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 146 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:35,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 864 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 18:20:35,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-12-06 18:20:35,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 282. [2021-12-06 18:20:35,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 202 states have (on average 1.5) internal successors, (303), 264 states have internal predecessors, (303), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:20:35,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 324 transitions. [2021-12-06 18:20:35,984 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 324 transitions. Word has length 44 [2021-12-06 18:20:35,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:35,985 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 324 transitions. [2021-12-06 18:20:35,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:20:35,985 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 324 transitions. [2021-12-06 18:20:35,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 18:20:35,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:35,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:35,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-12-06 18:20:36,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:36,186 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting free_reportsErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:36,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:36,187 INFO L85 PathProgramCache]: Analyzing trace with hash 293864698, now seen corresponding path program 1 times [2021-12-06 18:20:36,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:36,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668302520] [2021-12-06 18:20:36,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:36,195 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:36,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:36,198 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:36,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-06 18:20:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:36,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-06 18:20:36,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:36,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:20:36,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:20:36,558 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-12-06 18:20:36,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 56 [2021-12-06 18:20:36,636 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 18:20:36,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2021-12-06 18:20:36,935 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-12-06 18:20:36,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 59 [2021-12-06 18:20:37,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2021-12-06 18:20:37,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2021-12-06 18:20:38,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:38,830 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 18:20:38,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 49 [2021-12-06 18:20:39,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-12-06 18:20:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:39,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:39,187 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:39,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668302520] [2021-12-06 18:20:39,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668302520] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:39,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:39,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-06 18:20:39,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804916353] [2021-12-06 18:20:39,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:39,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 18:20:39,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:39,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 18:20:39,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-12-06 18:20:39,188 INFO L87 Difference]: Start difference. First operand 282 states and 324 transitions. Second operand has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:20:39,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:39,715 INFO L93 Difference]: Finished difference Result 302 states and 347 transitions. [2021-12-06 18:20:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:20:39,716 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2021-12-06 18:20:39,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:39,717 INFO L225 Difference]: With dead ends: 302 [2021-12-06 18:20:39,717 INFO L226 Difference]: Without dead ends: 302 [2021-12-06 18:20:39,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-12-06 18:20:39,718 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 61 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 284 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:39,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 1196 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 394 Invalid, 0 Unknown, 284 Unchecked, 0.5s Time] [2021-12-06 18:20:39,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-12-06 18:20:39,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 291. [2021-12-06 18:20:39,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 209 states have (on average 1.5023923444976077) internal successors, (314), 272 states have internal predecessors, (314), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 18:20:39,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 338 transitions. [2021-12-06 18:20:39,723 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 338 transitions. Word has length 45 [2021-12-06 18:20:39,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:39,723 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 338 transitions. [2021-12-06 18:20:39,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:20:39,723 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 338 transitions. [2021-12-06 18:20:39,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 18:20:39,724 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:39,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:39,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-12-06 18:20:39,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:39,924 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting free_reportsErr1REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:39,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:39,925 INFO L85 PathProgramCache]: Analyzing trace with hash 293864699, now seen corresponding path program 1 times [2021-12-06 18:20:39,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:39,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337925384] [2021-12-06 18:20:39,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:39,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:39,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:39,926 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:39,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-06 18:20:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:40,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 67 conjunts are in the unsatisfiable core [2021-12-06 18:20:40,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:40,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:20:40,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:20:40,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:20:40,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:20:40,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:40,562 INFO L354 Elim1Store]: treesize reduction 27, result has 32.5 percent of original size [2021-12-06 18:20:40,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 43 [2021-12-06 18:20:40,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:40,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 18:20:40,681 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 18:20:40,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2021-12-06 18:20:40,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-06 18:20:41,062 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-06 18:20:41,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2021-12-06 18:20:41,090 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-12-06 18:20:41,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-12-06 18:20:41,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:20:41,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-06 18:20:41,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:20:41,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-06 18:20:42,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-12-06 18:20:42,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 18:20:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:42,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:42,599 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:42,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337925384] [2021-12-06 18:20:42,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337925384] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:42,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:42,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-06 18:20:42,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950807718] [2021-12-06 18:20:42,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:42,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 18:20:42,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:42,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 18:20:42,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-12-06 18:20:42,601 INFO L87 Difference]: Start difference. First operand 291 states and 338 transitions. Second operand has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:20:43,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:43,386 INFO L93 Difference]: Finished difference Result 292 states and 338 transitions. [2021-12-06 18:20:43,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 18:20:43,387 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2021-12-06 18:20:43,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:43,389 INFO L225 Difference]: With dead ends: 292 [2021-12-06 18:20:43,389 INFO L226 Difference]: Without dead ends: 292 [2021-12-06 18:20:43,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2021-12-06 18:20:43,389 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 28 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 551 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:43,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 1569 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 229 Invalid, 0 Unknown, 551 Unchecked, 0.6s Time] [2021-12-06 18:20:43,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-12-06 18:20:43,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 291. [2021-12-06 18:20:43,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 209 states have (on average 1.4976076555023923) internal successors, (313), 272 states have internal predecessors, (313), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 18:20:43,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 337 transitions. [2021-12-06 18:20:43,395 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 337 transitions. Word has length 45 [2021-12-06 18:20:43,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:43,395 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 337 transitions. [2021-12-06 18:20:43,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:20:43,395 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 337 transitions. [2021-12-06 18:20:43,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 18:20:43,395 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:43,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:43,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-12-06 18:20:43,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:43,596 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting free_reportsErr2REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:43,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:43,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1063867589, now seen corresponding path program 1 times [2021-12-06 18:20:43,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:43,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404911432] [2021-12-06 18:20:43,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:43,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:43,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:43,602 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:43,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-06 18:20:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:43,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-06 18:20:43,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:43,939 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-06 18:20:43,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-12-06 18:20:44,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:20:44,655 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-06 18:20:44,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 18:20:45,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 18:20:45,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:20:45,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:45,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:45,278 INFO L354 Elim1Store]: treesize reduction 27, result has 32.5 percent of original size [2021-12-06 18:20:45,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 61 [2021-12-06 18:20:45,452 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:20:45,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2021-12-06 18:20:45,856 INFO L354 Elim1Store]: treesize reduction 13, result has 68.3 percent of original size [2021-12-06 18:20:45,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 61 [2021-12-06 18:20:46,726 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 18:20:46,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 45 [2021-12-06 18:20:46,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:20:46,855 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 18:20:46,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 45 [2021-12-06 18:20:46,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:20:47,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 18:20:48,105 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 18:20:48,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 30 [2021-12-06 18:20:48,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:48,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:48,395 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:48,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404911432] [2021-12-06 18:20:48,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404911432] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:48,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:48,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-06 18:20:48,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590908820] [2021-12-06 18:20:48,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:48,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 18:20:48,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:48,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 18:20:48,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-12-06 18:20:48,396 INFO L87 Difference]: Start difference. First operand 291 states and 337 transitions. Second operand has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:20:48,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:48,856 INFO L93 Difference]: Finished difference Result 291 states and 336 transitions. [2021-12-06 18:20:48,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 18:20:48,856 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2021-12-06 18:20:48,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:48,857 INFO L225 Difference]: With dead ends: 291 [2021-12-06 18:20:48,857 INFO L226 Difference]: Without dead ends: 291 [2021-12-06 18:20:48,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2021-12-06 18:20:48,858 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 11 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 863 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:48,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 2554 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 192 Invalid, 0 Unknown, 863 Unchecked, 0.3s Time] [2021-12-06 18:20:48,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-12-06 18:20:48,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2021-12-06 18:20:48,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 209 states have (on average 1.492822966507177) internal successors, (312), 272 states have internal predecessors, (312), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 18:20:48,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 336 transitions. [2021-12-06 18:20:48,864 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 336 transitions. Word has length 47 [2021-12-06 18:20:48,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:48,865 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 336 transitions. [2021-12-06 18:20:48,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:20:48,865 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 336 transitions. [2021-12-06 18:20:48,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 18:20:48,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:48,866 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:48,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-12-06 18:20:49,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:49,067 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting free_reportsErr3REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:49,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:49,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1063867588, now seen corresponding path program 1 times [2021-12-06 18:20:49,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:49,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971333091] [2021-12-06 18:20:49,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:49,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:49,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:49,074 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:49,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-06 18:20:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:49,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 86 conjunts are in the unsatisfiable core [2021-12-06 18:20:49,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:49,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:20:49,470 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:20:49,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2021-12-06 18:20:49,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:20:49,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:20:49,880 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-06 18:20:49,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 18:20:49,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:49,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 18:20:50,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 18:20:50,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 18:20:50,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:50,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 18:20:50,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:20:50,321 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:20:50,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 44 [2021-12-06 18:20:50,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-06 18:20:50,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-12-06 18:20:50,942 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-06 18:20:50,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2021-12-06 18:20:51,008 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-06 18:20:51,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2021-12-06 18:20:52,146 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 18:20:52,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 61 [2021-12-06 18:20:52,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2021-12-06 18:20:52,956 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 18:20:52,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 61 [2021-12-06 18:20:52,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2021-12-06 18:20:54,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:20:54,470 INFO L354 Elim1Store]: treesize reduction 31, result has 8.8 percent of original size [2021-12-06 18:20:54,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 49 [2021-12-06 18:20:54,483 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:20:54,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2021-12-06 18:20:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:54,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:54,771 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:54,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971333091] [2021-12-06 18:20:54,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971333091] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:54,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:54,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-06 18:20:54,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470499106] [2021-12-06 18:20:54,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:54,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:20:54,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:54,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:20:54,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:20:54,772 INFO L87 Difference]: Start difference. First operand 291 states and 336 transitions. Second operand has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:20:55,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:55,232 INFO L93 Difference]: Finished difference Result 291 states and 335 transitions. [2021-12-06 18:20:55,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 18:20:55,232 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2021-12-06 18:20:55,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:55,233 INFO L225 Difference]: With dead ends: 291 [2021-12-06 18:20:55,233 INFO L226 Difference]: Without dead ends: 291 [2021-12-06 18:20:55,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=97, Invalid=833, Unknown=0, NotChecked=0, Total=930 [2021-12-06 18:20:55,234 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 11 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 909 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:55,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1767 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 193 Invalid, 0 Unknown, 909 Unchecked, 0.3s Time] [2021-12-06 18:20:55,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-12-06 18:20:55,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2021-12-06 18:20:55,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 209 states have (on average 1.4880382775119618) internal successors, (311), 272 states have internal predecessors, (311), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 18:20:55,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 335 transitions. [2021-12-06 18:20:55,241 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 335 transitions. Word has length 47 [2021-12-06 18:20:55,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:55,241 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 335 transitions. [2021-12-06 18:20:55,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:20:55,241 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 335 transitions. [2021-12-06 18:20:55,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 18:20:55,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:55,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:55,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-12-06 18:20:55,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:55,443 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:55,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:55,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1620254662, now seen corresponding path program 1 times [2021-12-06 18:20:55,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:55,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247036609] [2021-12-06 18:20:55,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:55,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:55,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:55,444 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:55,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-12-06 18:20:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:55,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-06 18:20:55,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:55,858 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:20:55,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 20 [2021-12-06 18:20:56,018 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 18:20:56,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 19 [2021-12-06 18:20:56,158 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-12-06 18:20:56,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 49 [2021-12-06 18:20:56,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:20:56,797 INFO L354 Elim1Store]: treesize reduction 288, result has 10.8 percent of original size [2021-12-06 18:20:56,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 18:20:57,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:20:57,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:20:57,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:20:57,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:20:57,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 18:20:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:20:58,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:20:58,299 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:20:58,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247036609] [2021-12-06 18:20:58,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247036609] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:58,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:58,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-06 18:20:58,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815778606] [2021-12-06 18:20:58,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:58,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 18:20:58,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:20:58,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 18:20:58,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-12-06 18:20:58,301 INFO L87 Difference]: Start difference. First operand 291 states and 335 transitions. Second operand has 20 states, 17 states have (on average 2.411764705882353) internal successors, (41), 18 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:20:58,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:58,636 INFO L93 Difference]: Finished difference Result 304 states and 350 transitions. [2021-12-06 18:20:58,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 18:20:58,636 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.411764705882353) internal successors, (41), 18 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2021-12-06 18:20:58,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:58,637 INFO L225 Difference]: With dead ends: 304 [2021-12-06 18:20:58,637 INFO L226 Difference]: Without dead ends: 304 [2021-12-06 18:20:58,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2021-12-06 18:20:58,638 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 64 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 953 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:58,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 1672 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 213 Invalid, 0 Unknown, 953 Unchecked, 0.2s Time] [2021-12-06 18:20:58,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-12-06 18:20:58,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 297. [2021-12-06 18:20:58,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 215 states have (on average 1.4790697674418605) internal successors, (318), 278 states have internal predecessors, (318), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 18:20:58,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 342 transitions. [2021-12-06 18:20:58,643 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 342 transitions. Word has length 47 [2021-12-06 18:20:58,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:58,643 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 342 transitions. [2021-12-06 18:20:58,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.411764705882353) internal successors, (41), 18 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:20:58,644 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 342 transitions. [2021-12-06 18:20:58,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 18:20:58,644 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:58,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:58,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-12-06 18:20:58,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:20:58,845 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:20:58,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:58,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1620254663, now seen corresponding path program 1 times [2021-12-06 18:20:58,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:20:58,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087717574] [2021-12-06 18:20:58,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:58,849 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:20:58,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:20:58,851 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:20:58,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-12-06 18:20:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:59,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 74 conjunts are in the unsatisfiable core [2021-12-06 18:20:59,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:59,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:20:59,321 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 18:20:59,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 19 [2021-12-06 18:20:59,451 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:20:59,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 18:20:59,475 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 18:20:59,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-12-06 18:20:59,547 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:20:59,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 18 [2021-12-06 18:20:59,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-06 18:20:59,714 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:20:59,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2021-12-06 18:20:59,759 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 18:20:59,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 28 [2021-12-06 18:20:59,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:21:00,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:21:00,228 INFO L354 Elim1Store]: treesize reduction 288, result has 10.8 percent of original size [2021-12-06 18:21:00,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 18:21:00,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:00,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:00,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:00,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:00,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:00,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:00,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:00,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:00,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:00,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:00,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 18:21:00,408 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:21:00,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 18:21:00,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:21:00,437 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:21:00,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 18:21:00,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:21:00,604 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:21:00,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 18:21:00,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:21:00,638 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:21:00,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 18:21:00,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:21:00,829 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:21:00,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 18:21:00,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:21:00,863 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:21:00,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 18:21:00,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:21:01,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:01,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:21:01,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:01,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:21:01,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 18:21:01,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 18:21:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:01,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:21:01,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:21:01,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087717574] [2021-12-06 18:21:01,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087717574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:01,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:01,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-12-06 18:21:01,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961830386] [2021-12-06 18:21:01,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:01,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 18:21:01,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:21:01,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 18:21:01,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2021-12-06 18:21:01,578 INFO L87 Difference]: Start difference. First operand 297 states and 342 transitions. Second operand has 22 states, 20 states have (on average 2.05) internal successors, (41), 18 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:21:02,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:02,625 INFO L93 Difference]: Finished difference Result 304 states and 349 transitions. [2021-12-06 18:21:02,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 18:21:02,625 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.05) internal successors, (41), 18 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2021-12-06 18:21:02,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:02,626 INFO L225 Difference]: With dead ends: 304 [2021-12-06 18:21:02,626 INFO L226 Difference]: Without dead ends: 304 [2021-12-06 18:21:02,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2021-12-06 18:21:02,627 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 75 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 795 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:02,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 1338 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 470 Invalid, 0 Unknown, 795 Unchecked, 0.7s Time] [2021-12-06 18:21:02,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-12-06 18:21:02,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 297. [2021-12-06 18:21:02,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 215 states have (on average 1.4744186046511627) internal successors, (317), 278 states have internal predecessors, (317), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 18:21:02,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 341 transitions. [2021-12-06 18:21:02,632 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 341 transitions. Word has length 47 [2021-12-06 18:21:02,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:02,632 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 341 transitions. [2021-12-06 18:21:02,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.05) internal successors, (41), 18 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:21:02,632 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 341 transitions. [2021-12-06 18:21:02,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 18:21:02,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:02,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:02,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-12-06 18:21:02,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:21:02,833 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:21:02,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:02,834 INFO L85 PathProgramCache]: Analyzing trace with hash -727934890, now seen corresponding path program 1 times [2021-12-06 18:21:02,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:21:02,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455398474] [2021-12-06 18:21:02,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:02,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:21:02,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:21:02,835 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:21:02,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-12-06 18:21:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:02,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:21:02,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:21:03,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:03,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:21:03,022 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:21:03,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455398474] [2021-12-06 18:21:03,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455398474] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:03,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:03,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:21:03,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688581164] [2021-12-06 18:21:03,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:03,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:21:03,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:21:03,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:21:03,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:21:03,024 INFO L87 Difference]: Start difference. First operand 297 states and 341 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:21:03,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:03,038 INFO L93 Difference]: Finished difference Result 314 states and 355 transitions. [2021-12-06 18:21:03,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:21:03,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2021-12-06 18:21:03,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:03,040 INFO L225 Difference]: With dead ends: 314 [2021-12-06 18:21:03,040 INFO L226 Difference]: Without dead ends: 314 [2021-12-06 18:21:03,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:21:03,041 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 80 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:03,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 563 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:21:03,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-12-06 18:21:03,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 295. [2021-12-06 18:21:03,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 213 states have (on average 1.460093896713615) internal successors, (311), 276 states have internal predecessors, (311), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 18:21:03,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 335 transitions. [2021-12-06 18:21:03,046 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 335 transitions. Word has length 49 [2021-12-06 18:21:03,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:03,046 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 335 transitions. [2021-12-06 18:21:03,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:21:03,046 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 335 transitions. [2021-12-06 18:21:03,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-06 18:21:03,046 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:03,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:03,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-12-06 18:21:03,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:21:03,247 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:21:03,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:03,248 INFO L85 PathProgramCache]: Analyzing trace with hash -2130667900, now seen corresponding path program 1 times [2021-12-06 18:21:03,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:21:03,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834519084] [2021-12-06 18:21:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:03,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:21:03,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:21:03,249 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:21:03,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-12-06 18:21:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:03,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 78 conjunts are in the unsatisfiable core [2021-12-06 18:21:03,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:21:03,715 INFO L354 Elim1Store]: treesize reduction 18, result has 53.8 percent of original size [2021-12-06 18:21:03,715 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 2 case distinctions, treesize of input 20 treesize of output 35 [2021-12-06 18:21:03,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:21:03,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:03,948 INFO L354 Elim1Store]: treesize reduction 66, result has 33.3 percent of original size [2021-12-06 18:21:03,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 77 [2021-12-06 18:21:04,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:04,062 INFO L354 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2021-12-06 18:21:04,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 62 [2021-12-06 18:21:04,484 INFO L354 Elim1Store]: treesize reduction 89, result has 33.6 percent of original size [2021-12-06 18:21:04,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 73 treesize of output 107 [2021-12-06 18:21:05,257 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-06 18:21:05,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 52 [2021-12-06 18:21:05,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:21:08,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:08,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:08,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:08,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:08,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:08,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:08,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:08,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:08,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:08,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:08,351 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:21:08,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 61 [2021-12-06 18:21:09,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:09,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:09,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:09,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:09,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:09,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:09,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:09,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:09,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:09,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:09,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 18:21:11,534 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:21:11,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 18:21:11,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:21:11,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:11,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:11,567 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:21:11,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2021-12-06 18:21:12,521 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:21:12,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 18:21:12,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:21:12,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:12,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:12,559 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:21:12,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2021-12-06 18:21:14,310 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:21:14,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 18:21:14,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:21:14,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:14,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:14,350 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:21:14,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2021-12-06 18:21:16,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:16,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:16,062 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:21:16,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2021-12-06 18:21:16,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:16,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:21:23,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 18:21:27,224 INFO L354 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2021-12-06 18:21:27,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-12-06 18:21:31,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:31,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:21:31,676 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:21:31,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834519084] [2021-12-06 18:21:31,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834519084] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:31,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:31,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-12-06 18:21:31,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872802698] [2021-12-06 18:21:31,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:31,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 18:21:31,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:21:31,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 18:21:31,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-12-06 18:21:31,677 INFO L87 Difference]: Start difference. First operand 295 states and 335 transitions. Second operand has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:21:32,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:32,120 INFO L93 Difference]: Finished difference Result 320 states and 366 transitions. [2021-12-06 18:21:32,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 18:21:32,120 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 50 [2021-12-06 18:21:32,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:32,122 INFO L225 Difference]: With dead ends: 320 [2021-12-06 18:21:32,122 INFO L226 Difference]: Without dead ends: 320 [2021-12-06 18:21:32,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2021-12-06 18:21:32,123 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 83 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1930 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1272 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:32,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 1930 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 200 Invalid, 0 Unknown, 1272 Unchecked, 0.3s Time] [2021-12-06 18:21:32,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-12-06 18:21:32,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 298. [2021-12-06 18:21:32,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 216 states have (on average 1.462962962962963) internal successors, (316), 279 states have internal predecessors, (316), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 18:21:32,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 340 transitions. [2021-12-06 18:21:32,127 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 340 transitions. Word has length 50 [2021-12-06 18:21:32,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:32,128 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 340 transitions. [2021-12-06 18:21:32,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:21:32,128 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 340 transitions. [2021-12-06 18:21:32,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-06 18:21:32,128 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:32,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:32,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-12-06 18:21:32,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:21:32,329 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:21:32,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:32,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2130667899, now seen corresponding path program 1 times [2021-12-06 18:21:32,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:21:32,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639951318] [2021-12-06 18:21:32,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:32,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:21:32,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:21:32,331 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:21:32,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-12-06 18:21:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:33,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 109 conjunts are in the unsatisfiable core [2021-12-06 18:21:33,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:21:33,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:21:33,197 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-06 18:21:33,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 51 [2021-12-06 18:21:33,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:21:33,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:21:33,784 INFO L354 Elim1Store]: treesize reduction 57, result has 44.1 percent of original size [2021-12-06 18:21:33,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 86 [2021-12-06 18:21:33,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 18:21:34,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-06 18:21:34,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:34,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:34,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:34,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-12-06 18:21:34,366 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-06 18:21:34,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2021-12-06 18:21:34,406 INFO L354 Elim1Store]: treesize reduction 44, result has 32.3 percent of original size [2021-12-06 18:21:34,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2021-12-06 18:21:34,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 18:21:34,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 39 [2021-12-06 18:21:35,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,468 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:21:35,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 78 [2021-12-06 18:21:35,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2021-12-06 18:21:35,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:35,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2021-12-06 18:21:36,089 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 18:21:36,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2021-12-06 18:21:36,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-12-06 18:21:36,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:36,137 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:21:36,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2021-12-06 18:21:36,348 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 18:21:36,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2021-12-06 18:21:36,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-12-06 18:21:36,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:36,402 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:21:36,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2021-12-06 18:21:36,653 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-12-06 18:21:36,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2021-12-06 18:21:36,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-12-06 18:21:36,695 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 18:21:36,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2021-12-06 18:21:36,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:36,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:36,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 18:21:36,985 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 18:21:36,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2021-12-06 18:21:36,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-12-06 18:21:41,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2021-12-06 18:21:41,812 INFO L354 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2021-12-06 18:21:41,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 52 [2021-12-06 18:21:41,830 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:21:41,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-12-06 18:21:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:42,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:21:42,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:21:42,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639951318] [2021-12-06 18:21:42,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639951318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:42,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:42,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-12-06 18:21:42,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726796041] [2021-12-06 18:21:42,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:42,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 18:21:42,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:21:42,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 18:21:42,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=743, Unknown=0, NotChecked=0, Total=812 [2021-12-06 18:21:42,152 INFO L87 Difference]: Start difference. First operand 298 states and 340 transitions. Second operand has 29 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 24 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:21:42,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:42,676 INFO L93 Difference]: Finished difference Result 331 states and 376 transitions. [2021-12-06 18:21:42,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-06 18:21:42,677 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 24 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 50 [2021-12-06 18:21:42,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:42,678 INFO L225 Difference]: With dead ends: 331 [2021-12-06 18:21:42,678 INFO L226 Difference]: Without dead ends: 331 [2021-12-06 18:21:42,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=87, Invalid=969, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 18:21:42,679 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 61 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1275 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:42,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 1972 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 211 Invalid, 0 Unknown, 1275 Unchecked, 0.3s Time] [2021-12-06 18:21:42,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-12-06 18:21:42,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 321. [2021-12-06 18:21:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 239 states have (on average 1.4267782426778242) internal successors, (341), 302 states have internal predecessors, (341), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 18:21:42,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 365 transitions. [2021-12-06 18:21:42,684 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 365 transitions. Word has length 50 [2021-12-06 18:21:42,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:42,684 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 365 transitions. [2021-12-06 18:21:42,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 24 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:21:42,684 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 365 transitions. [2021-12-06 18:21:42,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 18:21:42,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:42,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:42,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-12-06 18:21:42,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:21:42,886 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_list_delErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:21:42,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:42,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1565616984, now seen corresponding path program 1 times [2021-12-06 18:21:42,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:21:42,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427895507] [2021-12-06 18:21:42,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:42,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:21:42,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:21:42,889 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:21:42,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-12-06 18:21:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:43,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:21:43,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:21:43,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:43,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:21:43,132 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:21:43,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427895507] [2021-12-06 18:21:43,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427895507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:43,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:43,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:21:43,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791684018] [2021-12-06 18:21:43,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:43,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:21:43,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:21:43,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:21:43,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:21:43,133 INFO L87 Difference]: Start difference. First operand 321 states and 365 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:21:43,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:43,524 INFO L93 Difference]: Finished difference Result 341 states and 385 transitions. [2021-12-06 18:21:43,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:21:43,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2021-12-06 18:21:43,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:43,526 INFO L225 Difference]: With dead ends: 341 [2021-12-06 18:21:43,526 INFO L226 Difference]: Without dead ends: 341 [2021-12-06 18:21:43,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:21:43,527 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 44 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:43,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 524 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:21:43,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-12-06 18:21:43,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 333. [2021-12-06 18:21:43,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 250 states have (on average 1.436) internal successors, (359), 312 states have internal predecessors, (359), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (15), 10 states have call predecessors, (15), 11 states have call successors, (15) [2021-12-06 18:21:43,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 385 transitions. [2021-12-06 18:21:43,531 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 385 transitions. Word has length 52 [2021-12-06 18:21:43,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:43,532 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 385 transitions. [2021-12-06 18:21:43,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:21:43,532 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 385 transitions. [2021-12-06 18:21:43,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 18:21:43,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:43,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:43,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-12-06 18:21:43,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:21:43,733 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_list_delErr1REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:21:43,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:43,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1565616985, now seen corresponding path program 1 times [2021-12-06 18:21:43,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:21:43,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499779549] [2021-12-06 18:21:43,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:43,737 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:21:43,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:21:43,739 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:21:43,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-12-06 18:21:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:44,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 78 conjunts are in the unsatisfiable core [2021-12-06 18:21:44,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:21:44,211 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:21:44,211 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 24 treesize of output 31 [2021-12-06 18:21:44,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:21:44,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:21:44,560 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-06 18:21:44,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 18:21:44,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:44,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 18:21:44,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 18:21:44,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 18:21:44,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:45,004 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:21:45,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 42 [2021-12-06 18:21:45,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-12-06 18:21:45,549 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-06 18:21:45,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2021-12-06 18:21:46,173 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 18:21:46,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 54 [2021-12-06 18:21:46,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2021-12-06 18:21:46,866 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 18:21:46,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 54 [2021-12-06 18:21:46,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2021-12-06 18:21:48,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:21:48,358 INFO L354 Elim1Store]: treesize reduction 32, result has 8.6 percent of original size [2021-12-06 18:21:48,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 34 [2021-12-06 18:21:48,370 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-12-06 18:21:48,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 16 [2021-12-06 18:21:48,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:48,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:21:48,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:21:48,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499779549] [2021-12-06 18:21:48,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499779549] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:48,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:48,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-06 18:21:48,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926585347] [2021-12-06 18:21:48,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:48,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 18:21:48,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:21:48,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 18:21:48,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2021-12-06 18:21:48,746 INFO L87 Difference]: Start difference. First operand 333 states and 385 transitions. Second operand has 27 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 20 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:21:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:49,065 INFO L93 Difference]: Finished difference Result 333 states and 383 transitions. [2021-12-06 18:21:49,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 18:21:49,065 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 20 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2021-12-06 18:21:49,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:49,067 INFO L225 Difference]: With dead ends: 333 [2021-12-06 18:21:49,067 INFO L226 Difference]: Without dead ends: 333 [2021-12-06 18:21:49,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2021-12-06 18:21:49,068 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 11 mSDsluCounter, 1949 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 574 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:49,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 2121 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 574 Unchecked, 0.2s Time] [2021-12-06 18:21:49,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-12-06 18:21:49,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-12-06 18:21:49,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 250 states have (on average 1.432) internal successors, (358), 312 states have internal predecessors, (358), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-06 18:21:49,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 383 transitions. [2021-12-06 18:21:49,073 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 383 transitions. Word has length 52 [2021-12-06 18:21:49,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:49,073 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 383 transitions. [2021-12-06 18:21:49,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 20 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:21:49,073 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 383 transitions. [2021-12-06 18:21:49,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-06 18:21:49,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:49,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:49,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-12-06 18:21:49,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:21:49,275 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:21:49,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:49,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1996654393, now seen corresponding path program 1 times [2021-12-06 18:21:49,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:21:49,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849551865] [2021-12-06 18:21:49,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:49,279 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:21:49,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:21:49,280 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:21:49,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-12-06 18:21:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:49,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 90 conjunts are in the unsatisfiable core [2021-12-06 18:21:49,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:21:50,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:21:50,133 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-06 18:21:50,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 46 [2021-12-06 18:21:50,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:21:50,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:21:50,666 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-06 18:21:50,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2021-12-06 18:21:50,720 INFO L354 Elim1Store]: treesize reduction 57, result has 44.1 percent of original size [2021-12-06 18:21:50,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 79 [2021-12-06 18:21:50,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:50,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:50,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:50,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2021-12-06 18:21:50,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-06 18:21:51,256 INFO L354 Elim1Store]: treesize reduction 44, result has 32.3 percent of original size [2021-12-06 18:21:51,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 53 treesize of output 59 [2021-12-06 18:21:51,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 18:21:51,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 39 [2021-12-06 18:21:51,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 18:21:52,030 INFO L354 Elim1Store]: treesize reduction 288, result has 10.8 percent of original size [2021-12-06 18:21:52,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 57 [2021-12-06 18:21:52,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:52,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:52,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:52,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:52,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:52,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:52,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:52,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:52,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:52,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:52,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 78 [2021-12-06 18:21:52,377 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:21:52,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2021-12-06 18:21:52,415 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:21:52,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2021-12-06 18:21:52,576 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:21:52,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2021-12-06 18:21:52,610 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:21:52,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2021-12-06 18:21:52,816 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:21:52,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2021-12-06 18:21:52,851 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:21:52,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2021-12-06 18:21:53,061 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:21:53,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2021-12-06 18:21:53,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:21:53,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 18:21:56,831 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-12-06 18:21:56,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 48 [2021-12-06 18:21:56,852 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:21:56,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-12-06 18:21:57,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:57,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:21:57,251 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:21:57,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849551865] [2021-12-06 18:21:57,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849551865] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:57,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:57,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-12-06 18:21:57,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378476307] [2021-12-06 18:21:57,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:57,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 18:21:57,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:21:57,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 18:21:57,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2021-12-06 18:21:57,253 INFO L87 Difference]: Start difference. First operand 333 states and 383 transitions. Second operand has 26 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 21 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:21:57,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:57,731 INFO L93 Difference]: Finished difference Result 371 states and 422 transitions. [2021-12-06 18:21:57,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 18:21:57,732 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 21 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 50 [2021-12-06 18:21:57,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:57,733 INFO L225 Difference]: With dead ends: 371 [2021-12-06 18:21:57,734 INFO L226 Difference]: Without dead ends: 371 [2021-12-06 18:21:57,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2021-12-06 18:21:57,734 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 97 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 2467 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1410 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:57,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 2467 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 204 Invalid, 0 Unknown, 1410 Unchecked, 0.3s Time] [2021-12-06 18:21:57,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-12-06 18:21:57,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 310. [2021-12-06 18:21:57,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 227 states have (on average 1.4625550660792952) internal successors, (332), 289 states have internal predecessors, (332), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-06 18:21:57,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 357 transitions. [2021-12-06 18:21:57,739 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 357 transitions. Word has length 50 [2021-12-06 18:21:57,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:57,739 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 357 transitions. [2021-12-06 18:21:57,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 21 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:21:57,739 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 357 transitions. [2021-12-06 18:21:57,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 18:21:57,739 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:57,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:57,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-12-06 18:21:57,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:21:57,940 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:21:57,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:57,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1127553029, now seen corresponding path program 1 times [2021-12-06 18:21:57,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:21:57,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046738017] [2021-12-06 18:21:57,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:57,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:21:57,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:21:57,946 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:21:57,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-12-06 18:21:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:58,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:21:58,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:21:58,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:58,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:21:58,218 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:21:58,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046738017] [2021-12-06 18:21:58,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046738017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:58,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:58,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:21:58,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696175773] [2021-12-06 18:21:58,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:58,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:21:58,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:21:58,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:21:58,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:21:58,219 INFO L87 Difference]: Start difference. First operand 310 states and 357 transitions. Second operand has 3 states, 2 states have (on average 23.0) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:21:58,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:58,446 INFO L93 Difference]: Finished difference Result 394 states and 458 transitions. [2021-12-06 18:21:58,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:21:58,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 23.0) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2021-12-06 18:21:58,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:58,448 INFO L225 Difference]: With dead ends: 394 [2021-12-06 18:21:58,449 INFO L226 Difference]: Without dead ends: 394 [2021-12-06 18:21:58,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:21:58,449 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 50 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:58,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 332 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:21:58,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-12-06 18:21:58,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 309. [2021-12-06 18:21:58,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 227 states have (on average 1.4537444933920705) internal successors, (330), 288 states have internal predecessors, (330), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-06 18:21:58,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 355 transitions. [2021-12-06 18:21:58,454 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 355 transitions. Word has length 52 [2021-12-06 18:21:58,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:58,454 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 355 transitions. [2021-12-06 18:21:58,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 23.0) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:21:58,454 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 355 transitions. [2021-12-06 18:21:58,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 18:21:58,454 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:58,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:58,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-12-06 18:21:58,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:21:58,655 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:21:58,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:58,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1127553030, now seen corresponding path program 1 times [2021-12-06 18:21:58,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:21:58,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331059365] [2021-12-06 18:21:58,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:58,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:21:58,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:21:58,657 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:21:58,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-12-06 18:21:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:58,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:21:58,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:21:58,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:58,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:21:58,956 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:21:58,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331059365] [2021-12-06 18:21:58,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331059365] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:58,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:58,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:21:58,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53263076] [2021-12-06 18:21:58,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:58,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:21:58,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:21:58,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:21:58,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:21:58,957 INFO L87 Difference]: Start difference. First operand 309 states and 355 transitions. Second operand has 3 states, 2 states have (on average 23.0) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:21:59,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:59,724 INFO L93 Difference]: Finished difference Result 433 states and 499 transitions. [2021-12-06 18:21:59,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:21:59,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 23.0) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2021-12-06 18:21:59,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:59,726 INFO L225 Difference]: With dead ends: 433 [2021-12-06 18:21:59,727 INFO L226 Difference]: Without dead ends: 433 [2021-12-06 18:21:59,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:21:59,727 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 84 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:59,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 371 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 18:21:59,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-12-06 18:21:59,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 308. [2021-12-06 18:21:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 227 states have (on average 1.4449339207048457) internal successors, (328), 287 states have internal predecessors, (328), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-06 18:21:59,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 353 transitions. [2021-12-06 18:21:59,732 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 353 transitions. Word has length 52 [2021-12-06 18:21:59,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:59,732 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 353 transitions. [2021-12-06 18:21:59,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 23.0) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:21:59,732 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 353 transitions. [2021-12-06 18:21:59,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 18:21:59,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:59,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:59,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-12-06 18:21:59,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:21:59,934 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:21:59,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:59,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1280530856, now seen corresponding path program 1 times [2021-12-06 18:21:59,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:21:59,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823753131] [2021-12-06 18:21:59,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:59,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:21:59,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:21:59,939 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:21:59,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-12-06 18:22:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:00,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:22:00,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:00,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:00,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:22:00,194 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:00,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823753131] [2021-12-06 18:22:00,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823753131] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:00,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:00,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:22:00,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360240280] [2021-12-06 18:22:00,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:00,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:22:00,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:00,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:22:00,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:22:00,195 INFO L87 Difference]: Start difference. First operand 308 states and 353 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 18:22:00,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:00,496 INFO L93 Difference]: Finished difference Result 312 states and 355 transitions. [2021-12-06 18:22:00,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:22:00,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2021-12-06 18:22:00,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:00,497 INFO L225 Difference]: With dead ends: 312 [2021-12-06 18:22:00,497 INFO L226 Difference]: Without dead ends: 312 [2021-12-06 18:22:00,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:22:00,498 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 49 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:00,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 357 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:22:00,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-12-06 18:22:00,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 310. [2021-12-06 18:22:00,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 229 states have (on average 1.4410480349344978) internal successors, (330), 288 states have internal predecessors, (330), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-06 18:22:00,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 355 transitions. [2021-12-06 18:22:00,502 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 355 transitions. Word has length 53 [2021-12-06 18:22:00,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:00,502 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 355 transitions. [2021-12-06 18:22:00,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 18:22:00,502 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 355 transitions. [2021-12-06 18:22:00,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 18:22:00,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:00,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:00,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-12-06 18:22:00,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:00,704 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:22:00,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:00,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1041751103, now seen corresponding path program 1 times [2021-12-06 18:22:00,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:00,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155740234] [2021-12-06 18:22:00,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:00,712 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:00,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:00,714 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:00,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-12-06 18:22:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:00,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-06 18:22:00,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:01,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:22:01,176 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-06 18:22:01,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 18:22:01,232 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:22:01,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 49 [2021-12-06 18:22:01,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 18:22:01,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:01,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:22:01,365 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:01,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155740234] [2021-12-06 18:22:01,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155740234] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:01,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:01,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-06 18:22:01,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410722336] [2021-12-06 18:22:01,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:01,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 18:22:01,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:01,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 18:22:01,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:22:01,366 INFO L87 Difference]: Start difference. First operand 310 states and 355 transitions. Second operand has 18 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:22:02,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:02,970 INFO L93 Difference]: Finished difference Result 321 states and 365 transitions. [2021-12-06 18:22:02,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:22:02,970 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 54 [2021-12-06 18:22:02,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:02,971 INFO L225 Difference]: With dead ends: 321 [2021-12-06 18:22:02,971 INFO L226 Difference]: Without dead ends: 321 [2021-12-06 18:22:02,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=203, Invalid=853, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 18:22:02,972 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 453 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:02,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 1835 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 18:22:02,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-12-06 18:22:02,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 312. [2021-12-06 18:22:02,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 232 states have (on average 1.4310344827586208) internal successors, (332), 289 states have internal predecessors, (332), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-06 18:22:02,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 357 transitions. [2021-12-06 18:22:02,976 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 357 transitions. Word has length 54 [2021-12-06 18:22:02,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:02,977 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 357 transitions. [2021-12-06 18:22:02,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:22:02,977 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 357 transitions. [2021-12-06 18:22:02,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 18:22:02,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:02,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:02,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-12-06 18:22:03,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:03,178 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:22:03,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:03,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1218940948, now seen corresponding path program 1 times [2021-12-06 18:22:03,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:03,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411820308] [2021-12-06 18:22:03,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:03,182 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:03,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:03,184 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:03,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-12-06 18:22:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:03,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 18:22:03,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:03,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:22:03,706 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:03,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411820308] [2021-12-06 18:22:03,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411820308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:03,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:03,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:22:03,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336715418] [2021-12-06 18:22:03,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:03,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:22:03,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:03,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:22:03,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:22:03,707 INFO L87 Difference]: Start difference. First operand 312 states and 357 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:22:03,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:03,757 INFO L93 Difference]: Finished difference Result 414 states and 469 transitions. [2021-12-06 18:22:03,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:22:03,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 54 [2021-12-06 18:22:03,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:03,759 INFO L225 Difference]: With dead ends: 414 [2021-12-06 18:22:03,759 INFO L226 Difference]: Without dead ends: 414 [2021-12-06 18:22:03,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:22:03,759 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 150 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:03,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 1029 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:22:03,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-12-06 18:22:03,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 324. [2021-12-06 18:22:03,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 244 states have (on average 1.4098360655737705) internal successors, (344), 301 states have internal predecessors, (344), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-06 18:22:03,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 369 transitions. [2021-12-06 18:22:03,764 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 369 transitions. Word has length 54 [2021-12-06 18:22:03,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:03,764 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 369 transitions. [2021-12-06 18:22:03,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:22:03,764 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 369 transitions. [2021-12-06 18:22:03,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 18:22:03,765 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:03,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:03,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-12-06 18:22:03,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:03,966 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:22:03,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:03,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2065453880, now seen corresponding path program 1 times [2021-12-06 18:22:03,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:03,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358684407] [2021-12-06 18:22:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:03,970 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:03,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:03,973 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:03,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-12-06 18:22:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:04,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 51 conjunts are in the unsatisfiable core [2021-12-06 18:22:04,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:04,406 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:22:04,406 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 29 treesize of output 36 [2021-12-06 18:22:04,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:22:04,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:04,741 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-06 18:22:04,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 38 [2021-12-06 18:22:04,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-12-06 18:22:05,048 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-06 18:22:05,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2021-12-06 18:22:05,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2021-12-06 18:22:05,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 53 [2021-12-06 18:22:05,969 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:22:05,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 18 [2021-12-06 18:22:06,294 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:22:06,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 21 [2021-12-06 18:22:06,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:06,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:22:06,402 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:06,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358684407] [2021-12-06 18:22:06,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358684407] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:06,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:06,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-06 18:22:06,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805501642] [2021-12-06 18:22:06,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:06,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 18:22:06,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:06,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 18:22:06,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2021-12-06 18:22:06,403 INFO L87 Difference]: Start difference. First operand 324 states and 369 transitions. Second operand has 21 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:22:07,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:07,628 INFO L93 Difference]: Finished difference Result 325 states and 370 transitions. [2021-12-06 18:22:07,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 18:22:07,628 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2021-12-06 18:22:07,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:07,629 INFO L225 Difference]: With dead ends: 325 [2021-12-06 18:22:07,630 INFO L226 Difference]: Without dead ends: 325 [2021-12-06 18:22:07,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2021-12-06 18:22:07,630 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 45 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 402 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:07,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 1581 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 390 Invalid, 0 Unknown, 402 Unchecked, 0.9s Time] [2021-12-06 18:22:07,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-12-06 18:22:07,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2021-12-06 18:22:07,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 245 states have (on average 1.4081632653061225) internal successors, (345), 302 states have internal predecessors, (345), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-06 18:22:07,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 370 transitions. [2021-12-06 18:22:07,634 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 370 transitions. Word has length 55 [2021-12-06 18:22:07,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:07,634 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 370 transitions. [2021-12-06 18:22:07,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:22:07,635 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 370 transitions. [2021-12-06 18:22:07,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 18:22:07,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:07,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:07,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-12-06 18:22:07,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:07,836 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:22:07,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:07,837 INFO L85 PathProgramCache]: Analyzing trace with hash 395439457, now seen corresponding path program 1 times [2021-12-06 18:22:07,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:07,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028757660] [2021-12-06 18:22:07,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:07,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:07,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:07,842 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:07,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-12-06 18:22:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:08,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 18:22:08,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:08,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2021-12-06 18:22:08,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:08,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:22:08,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:08,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028757660] [2021-12-06 18:22:08,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028757660] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:08,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:08,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:22:08,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789664578] [2021-12-06 18:22:08,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:08,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:22:08,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:08,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:22:08,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:22:08,210 INFO L87 Difference]: Start difference. First operand 325 states and 370 transitions. Second operand has 8 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 18:22:08,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:08,728 INFO L93 Difference]: Finished difference Result 330 states and 375 transitions. [2021-12-06 18:22:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:22:08,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2021-12-06 18:22:08,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:08,730 INFO L225 Difference]: With dead ends: 330 [2021-12-06 18:22:08,730 INFO L226 Difference]: Without dead ends: 330 [2021-12-06 18:22:08,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:22:08,730 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 52 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:08,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 681 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 18:22:08,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-12-06 18:22:08,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2021-12-06 18:22:08,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 248 states have (on average 1.4112903225806452) internal successors, (350), 305 states have internal predecessors, (350), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-06 18:22:08,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 375 transitions. [2021-12-06 18:22:08,735 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 375 transitions. Word has length 56 [2021-12-06 18:22:08,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:08,735 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 375 transitions. [2021-12-06 18:22:08,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 18:22:08,735 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 375 transitions. [2021-12-06 18:22:08,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 18:22:08,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:08,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:08,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-12-06 18:22:08,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:08,937 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:22:08,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:08,938 INFO L85 PathProgramCache]: Analyzing trace with hash -221672310, now seen corresponding path program 1 times [2021-12-06 18:22:08,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:08,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137826807] [2021-12-06 18:22:08,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:08,941 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:08,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:08,943 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:08,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-12-06 18:22:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:09,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 18:22:09,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:09,345 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:22:09,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-12-06 18:22:09,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:09,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2021-12-06 18:22:09,594 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 18:22:09,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-12-06 18:22:09,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:09,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:22:09,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:09,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137826807] [2021-12-06 18:22:09,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137826807] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:09,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:09,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:22:09,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601020616] [2021-12-06 18:22:09,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:09,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 18:22:09,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:09,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 18:22:09,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:22:09,762 INFO L87 Difference]: Start difference. First operand 328 states and 375 transitions. Second operand has 13 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:22:10,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:10,320 INFO L93 Difference]: Finished difference Result 343 states and 382 transitions. [2021-12-06 18:22:10,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 18:22:10,320 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2021-12-06 18:22:10,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:10,322 INFO L225 Difference]: With dead ends: 343 [2021-12-06 18:22:10,322 INFO L226 Difference]: Without dead ends: 343 [2021-12-06 18:22:10,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-12-06 18:22:10,322 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 70 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 393 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:10,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 1074 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 355 Invalid, 0 Unknown, 393 Unchecked, 0.5s Time] [2021-12-06 18:22:10,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-12-06 18:22:10,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 328. [2021-12-06 18:22:10,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 248 states have (on average 1.407258064516129) internal successors, (349), 305 states have internal predecessors, (349), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-06 18:22:10,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 374 transitions. [2021-12-06 18:22:10,326 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 374 transitions. Word has length 58 [2021-12-06 18:22:10,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:10,327 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 374 transitions. [2021-12-06 18:22:10,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:22:10,327 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 374 transitions. [2021-12-06 18:22:10,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 18:22:10,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:10,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:10,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2021-12-06 18:22:10,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:10,529 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:22:10,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:10,530 INFO L85 PathProgramCache]: Analyzing trace with hash -221672309, now seen corresponding path program 1 times [2021-12-06 18:22:10,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:10,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857941292] [2021-12-06 18:22:10,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:10,532 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:10,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:10,534 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:10,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-12-06 18:22:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:10,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-06 18:22:10,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:11,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:11,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:22:11,042 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-06 18:22:11,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 27 [2021-12-06 18:22:11,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:11,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:22:11,336 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:22:11,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:22:11,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:11,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:22:11,545 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:11,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857941292] [2021-12-06 18:22:11,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857941292] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:11,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:11,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:22:11,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98825763] [2021-12-06 18:22:11,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:11,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 18:22:11,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:11,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 18:22:11,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:22:11,546 INFO L87 Difference]: Start difference. First operand 328 states and 374 transitions. Second operand has 13 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:22:12,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:12,639 INFO L93 Difference]: Finished difference Result 329 states and 372 transitions. [2021-12-06 18:22:12,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 18:22:12,639 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2021-12-06 18:22:12,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:12,641 INFO L225 Difference]: With dead ends: 329 [2021-12-06 18:22:12,641 INFO L226 Difference]: Without dead ends: 329 [2021-12-06 18:22:12,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-12-06 18:22:12,641 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 185 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 348 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:12,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 798 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 661 Invalid, 0 Unknown, 348 Unchecked, 1.0s Time] [2021-12-06 18:22:12,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-12-06 18:22:12,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 327. [2021-12-06 18:22:12,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 248 states have (on average 1.3991935483870968) internal successors, (347), 304 states have internal predecessors, (347), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-06 18:22:12,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 372 transitions. [2021-12-06 18:22:12,646 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 372 transitions. Word has length 58 [2021-12-06 18:22:12,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:12,646 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 372 transitions. [2021-12-06 18:22:12,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:22:12,646 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 372 transitions. [2021-12-06 18:22:12,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 18:22:12,646 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:12,646 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:12,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-12-06 18:22:12,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:12,848 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:22:12,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:12,849 INFO L85 PathProgramCache]: Analyzing trace with hash -106046336, now seen corresponding path program 1 times [2021-12-06 18:22:12,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:12,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146307877] [2021-12-06 18:22:12,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:12,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:12,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:12,851 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:12,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-12-06 18:22:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:13,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:22:13,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:13,282 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:22:13,283 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 20 treesize of output 27 [2021-12-06 18:22:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:13,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:22:13,293 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:13,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146307877] [2021-12-06 18:22:13,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146307877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:13,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:13,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:22:13,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52764874] [2021-12-06 18:22:13,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:13,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:22:13,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:13,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:22:13,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:22:13,294 INFO L87 Difference]: Start difference. First operand 327 states and 372 transitions. Second operand has 5 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 18:22:13,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:13,665 INFO L93 Difference]: Finished difference Result 390 states and 436 transitions. [2021-12-06 18:22:13,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:22:13,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 59 [2021-12-06 18:22:13,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:13,667 INFO L225 Difference]: With dead ends: 390 [2021-12-06 18:22:13,667 INFO L226 Difference]: Without dead ends: 390 [2021-12-06 18:22:13,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:22:13,668 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 107 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:13,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 465 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 196 Invalid, 0 Unknown, 111 Unchecked, 0.4s Time] [2021-12-06 18:22:13,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-12-06 18:22:13,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 326. [2021-12-06 18:22:13,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 248 states have (on average 1.3951612903225807) internal successors, (346), 303 states have internal predecessors, (346), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-06 18:22:13,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 371 transitions. [2021-12-06 18:22:13,672 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 371 transitions. Word has length 59 [2021-12-06 18:22:13,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:13,672 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 371 transitions. [2021-12-06 18:22:13,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 18:22:13,672 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 371 transitions. [2021-12-06 18:22:13,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 18:22:13,673 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:13,673 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:13,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-12-06 18:22:13,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:13,874 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:22:13,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:13,875 INFO L85 PathProgramCache]: Analyzing trace with hash -106046335, now seen corresponding path program 1 times [2021-12-06 18:22:13,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:13,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652695472] [2021-12-06 18:22:13,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:13,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:13,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:13,879 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:13,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-12-06 18:22:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:14,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 18:22:14,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:14,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:22:14,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:14,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-06 18:22:14,590 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:22:14,590 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 17 treesize of output 17 [2021-12-06 18:22:14,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:14,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:22:14,707 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:14,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652695472] [2021-12-06 18:22:14,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652695472] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:14,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:14,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:22:14,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113276940] [2021-12-06 18:22:14,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:14,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:22:14,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:14,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:22:14,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:22:14,708 INFO L87 Difference]: Start difference. First operand 326 states and 371 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 18:22:16,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:16,197 INFO L93 Difference]: Finished difference Result 449 states and 499 transitions. [2021-12-06 18:22:16,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:22:16,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 59 [2021-12-06 18:22:16,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:16,200 INFO L225 Difference]: With dead ends: 449 [2021-12-06 18:22:16,200 INFO L226 Difference]: Without dead ends: 449 [2021-12-06 18:22:16,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:22:16,200 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 219 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:16,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 491 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 299 Invalid, 0 Unknown, 130 Unchecked, 1.5s Time] [2021-12-06 18:22:16,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-12-06 18:22:16,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 325. [2021-12-06 18:22:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 248 states have (on average 1.3911290322580645) internal successors, (345), 302 states have internal predecessors, (345), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-06 18:22:16,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 370 transitions. [2021-12-06 18:22:16,205 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 370 transitions. Word has length 59 [2021-12-06 18:22:16,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:16,205 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 370 transitions. [2021-12-06 18:22:16,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 18:22:16,205 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 370 transitions. [2021-12-06 18:22:16,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 18:22:16,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:16,206 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:16,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-12-06 18:22:16,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:16,407 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:22:16,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:16,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1469534730, now seen corresponding path program 1 times [2021-12-06 18:22:16,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:16,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359930922] [2021-12-06 18:22:16,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:16,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:16,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:16,414 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:16,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-12-06 18:22:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:16,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 18:22:16,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:22:17,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:22:17,137 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:17,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359930922] [2021-12-06 18:22:17,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359930922] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:17,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:17,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:22:17,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431249549] [2021-12-06 18:22:17,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:17,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:22:17,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:17,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:22:17,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:22:17,138 INFO L87 Difference]: Start difference. First operand 325 states and 370 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:22:17,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:17,142 INFO L93 Difference]: Finished difference Result 324 states and 368 transitions. [2021-12-06 18:22:17,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:22:17,143 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2021-12-06 18:22:17,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:17,144 INFO L225 Difference]: With dead ends: 324 [2021-12-06 18:22:17,144 INFO L226 Difference]: Without dead ends: 324 [2021-12-06 18:22:17,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:22:17,145 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 76 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:17,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 647 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2021-12-06 18:22:17,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-12-06 18:22:17,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2021-12-06 18:22:17,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 248 states have (on average 1.3830645161290323) internal successors, (343), 301 states have internal predecessors, (343), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-06 18:22:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 368 transitions. [2021-12-06 18:22:17,149 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 368 transitions. Word has length 59 [2021-12-06 18:22:17,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:17,149 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 368 transitions. [2021-12-06 18:22:17,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:22:17,150 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 368 transitions. [2021-12-06 18:22:17,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-06 18:22:17,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:17,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:17,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-12-06 18:22:17,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:17,351 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:22:17,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:17,352 INFO L85 PathProgramCache]: Analyzing trace with hash -122236954, now seen corresponding path program 1 times [2021-12-06 18:22:17,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:17,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540600238] [2021-12-06 18:22:17,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:17,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:17,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:17,355 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:17,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-12-06 18:22:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:17,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-06 18:22:17,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:17,905 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 0 case distinctions, treesize of input 18 treesize of output 15 [2021-12-06 18:22:18,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:22:18,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:18,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:18,222 INFO L354 Elim1Store]: treesize reduction 1, result has 95.2 percent of original size [2021-12-06 18:22:18,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 67 [2021-12-06 18:22:18,976 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:22:18,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2021-12-06 18:22:19,352 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:22:19,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 91 [2021-12-06 18:22:27,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 70 [2021-12-06 18:22:28,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:28,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:22:28,825 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:28,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540600238] [2021-12-06 18:22:28,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540600238] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:28,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:28,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-06 18:22:28,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542989748] [2021-12-06 18:22:28,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:28,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 18:22:28,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:22:28,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 18:22:28,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=359, Unknown=2, NotChecked=0, Total=420 [2021-12-06 18:22:28,826 INFO L87 Difference]: Start difference. First operand 324 states and 368 transitions. Second operand has 21 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:22:29,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:29,073 INFO L93 Difference]: Finished difference Result 329 states and 372 transitions. [2021-12-06 18:22:29,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 18:22:29,073 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 60 [2021-12-06 18:22:29,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:29,074 INFO L225 Difference]: With dead ends: 329 [2021-12-06 18:22:29,074 INFO L226 Difference]: Without dead ends: 301 [2021-12-06 18:22:29,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=64, Invalid=396, Unknown=2, NotChecked=0, Total=462 [2021-12-06 18:22:29,075 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 40 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 374 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:29,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 901 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 374 Unchecked, 0.2s Time] [2021-12-06 18:22:29,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-12-06 18:22:29,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2021-12-06 18:22:29,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 227 states have (on average 1.4140969162995596) internal successors, (321), 280 states have internal predecessors, (321), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (13), 11 states have call predecessors, (13), 10 states have call successors, (13) [2021-12-06 18:22:29,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 344 transitions. [2021-12-06 18:22:29,079 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 344 transitions. Word has length 60 [2021-12-06 18:22:29,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:29,079 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 344 transitions. [2021-12-06 18:22:29,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:22:29,080 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 344 transitions. [2021-12-06 18:22:29,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 18:22:29,080 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:29,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:29,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2021-12-06 18:22:29,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:22:29,281 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting free_reportsErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 75 more)] === [2021-12-06 18:22:29,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:29,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1820164861, now seen corresponding path program 1 times [2021-12-06 18:22:29,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:22:29,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148291219] [2021-12-06 18:22:29,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:29,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:22:29,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:22:29,287 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:22:29,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-12-06 18:22:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:29,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 65 conjunts are in the unsatisfiable core [2021-12-06 18:22:29,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:29,807 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:22:29,807 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 2 case distinctions, treesize of input 22 treesize of output 29 [2021-12-06 18:22:30,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:22:30,151 INFO L354 Elim1Store]: treesize reduction 42, result has 44.0 percent of original size [2021-12-06 18:22:30,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 58 [2021-12-06 18:22:30,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-12-06 18:22:30,555 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-12-06 18:22:30,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 44 [2021-12-06 18:22:31,088 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:22:31,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2021-12-06 18:22:31,143 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 28 treesize of output 20 [2021-12-06 18:22:32,760 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:22:32,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 67 [2021-12-06 18:22:32,767 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:22:32,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148291219] [2021-12-06 18:22:32,767 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-12-06 18:22:32,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1463277597] [2021-12-06 18:22:32,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:32,767 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 18:22:32,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 18:22:32,768 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 18:22:32,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2021-12-06 18:22:32,923 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@2584ef1e at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.variables.ProgramVarUtils.constructConstantForAuxVar(ProgramVarUtils.java:119) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.computeClosedFormula(UnmodifiableTransFormula.java:172) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.(UnmodifiableTransFormula.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:274) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.decoupleArrayValues(TransFormulaUtils.java:1226) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:388) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-06 18:22:32,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781780642] [2021-12-06 18:22:32,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:32,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:22:32,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:22:32,925 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:22:32,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-12-06 18:22:33,017 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@2584ef1e at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.variables.ProgramVarUtils.constructConstantForAuxVar(ProgramVarUtils.java:119) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.computeClosedFormula(UnmodifiableTransFormula.java:172) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.(UnmodifiableTransFormula.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:274) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.decoupleArrayValues(TransFormulaUtils.java:1226) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:388) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-06 18:22:33,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:33,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-12-06 18:22:33,018 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-12-06 18:22:33,018 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-12-06 18:22:33,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr0REQUIRES_VIOLATION (78 of 79 remaining) [2021-12-06 18:22:33,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr1REQUIRES_VIOLATION (77 of 79 remaining) [2021-12-06 18:22:33,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr2REQUIRES_VIOLATION (76 of 79 remaining) [2021-12-06 18:22:33,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr3REQUIRES_VIOLATION (75 of 79 remaining) [2021-12-06 18:22:33,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr4ASSERT_VIOLATIONMEMORY_FREE (74 of 79 remaining) [2021-12-06 18:22:33,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr5ASSERT_VIOLATIONMEMORY_FREE (73 of 79 remaining) [2021-12-06 18:22:33,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr6ASSERT_VIOLATIONMEMORY_FREE (72 of 79 remaining) [2021-12-06 18:22:33,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr7REQUIRES_VIOLATION (71 of 79 remaining) [2021-12-06 18:22:33,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr8REQUIRES_VIOLATION (70 of 79 remaining) [2021-12-06 18:22:33,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (69 of 79 remaining) [2021-12-06 18:22:33,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION (68 of 79 remaining) [2021-12-06 18:22:33,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION (67 of 79 remaining) [2021-12-06 18:22:33,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION (66 of 79 remaining) [2021-12-06 18:22:33,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION (65 of 79 remaining) [2021-12-06 18:22:33,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION (64 of 79 remaining) [2021-12-06 18:22:33,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION (63 of 79 remaining) [2021-12-06 18:22:33,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION (62 of 79 remaining) [2021-12-06 18:22:33,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr4REQUIRES_VIOLATION (61 of 79 remaining) [2021-12-06 18:22:33,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr5REQUIRES_VIOLATION (60 of 79 remaining) [2021-12-06 18:22:33,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr6REQUIRES_VIOLATION (59 of 79 remaining) [2021-12-06 18:22:33,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr7REQUIRES_VIOLATION (58 of 79 remaining) [2021-12-06 18:22:33,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION (57 of 79 remaining) [2021-12-06 18:22:33,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION (56 of 79 remaining) [2021-12-06 18:22:33,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION (55 of 79 remaining) [2021-12-06 18:22:33,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION (54 of 79 remaining) [2021-12-06 18:22:33,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION (53 of 79 remaining) [2021-12-06 18:22:33,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION (52 of 79 remaining) [2021-12-06 18:22:33,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION (51 of 79 remaining) [2021-12-06 18:22:33,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION (50 of 79 remaining) [2021-12-06 18:22:33,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (49 of 79 remaining) [2021-12-06 18:22:33,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (48 of 79 remaining) [2021-12-06 18:22:33,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (47 of 79 remaining) [2021-12-06 18:22:33,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (46 of 79 remaining) [2021-12-06 18:22:33,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (45 of 79 remaining) [2021-12-06 18:22:33,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (44 of 79 remaining) [2021-12-06 18:22:33,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (43 of 79 remaining) [2021-12-06 18:22:33,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (42 of 79 remaining) [2021-12-06 18:22:33,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (41 of 79 remaining) [2021-12-06 18:22:33,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (40 of 79 remaining) [2021-12-06 18:22:33,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (39 of 79 remaining) [2021-12-06 18:22:33,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (38 of 79 remaining) [2021-12-06 18:22:33,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (37 of 79 remaining) [2021-12-06 18:22:33,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (36 of 79 remaining) [2021-12-06 18:22:33,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (35 of 79 remaining) [2021-12-06 18:22:33,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (34 of 79 remaining) [2021-12-06 18:22:33,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONARRAY_INDEX (33 of 79 remaining) [2021-12-06 18:22:33,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (32 of 79 remaining) [2021-12-06 18:22:33,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (31 of 79 remaining) [2021-12-06 18:22:33,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (30 of 79 remaining) [2021-12-06 18:22:33,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (29 of 79 remaining) [2021-12-06 18:22:33,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (28 of 79 remaining) [2021-12-06 18:22:33,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (27 of 79 remaining) [2021-12-06 18:22:33,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (26 of 79 remaining) [2021-12-06 18:22:33,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (25 of 79 remaining) [2021-12-06 18:22:33,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (24 of 79 remaining) [2021-12-06 18:22:33,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION (23 of 79 remaining) [2021-12-06 18:22:33,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (22 of 79 remaining) [2021-12-06 18:22:33,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (21 of 79 remaining) [2021-12-06 18:22:33,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (20 of 79 remaining) [2021-12-06 18:22:33,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION (19 of 79 remaining) [2021-12-06 18:22:33,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE (18 of 79 remaining) [2021-12-06 18:22:33,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE (17 of 79 remaining) [2021-12-06 18:22:33,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE (16 of 79 remaining) [2021-12-06 18:22:33,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION (15 of 79 remaining) [2021-12-06 18:22:33,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION (14 of 79 remaining) [2021-12-06 18:22:33,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (13 of 79 remaining) [2021-12-06 18:22:33,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE (12 of 79 remaining) [2021-12-06 18:22:33,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE (11 of 79 remaining) [2021-12-06 18:22:33,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE (10 of 79 remaining) [2021-12-06 18:22:33,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE (9 of 79 remaining) [2021-12-06 18:22:33,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE (8 of 79 remaining) [2021-12-06 18:22:33,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION (7 of 79 remaining) [2021-12-06 18:22:33,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATION (6 of 79 remaining) [2021-12-06 18:22:33,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATION (5 of 79 remaining) [2021-12-06 18:22:33,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION (4 of 79 remaining) [2021-12-06 18:22:33,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE (3 of 79 remaining) [2021-12-06 18:22:33,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE (2 of 79 remaining) [2021-12-06 18:22:33,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE (1 of 79 remaining) [2021-12-06 18:22:33,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK (0 of 79 remaining) [2021-12-06 18:22:33,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2021-12-06 18:22:33,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-12-06 18:22:33,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (50)] Ended with exit code 0 [2021-12-06 18:22:33,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 18:22:33,637 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:33,639 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:22:33,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:22:33 BoogieIcfgContainer [2021-12-06 18:22:33,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:22:33,653 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:22:33,653 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:22:33,653 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:22:33,653 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:20:09" (3/4) ... [2021-12-06 18:22:33,656 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 18:22:33,656 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:22:33,656 INFO L158 Benchmark]: Toolchain (without parser) took 145663.92ms. Allocated memory was 54.5MB in the beginning and 111.1MB in the end (delta: 56.6MB). Free memory was 29.8MB in the beginning and 26.8MB in the end (delta: 3.1MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2021-12-06 18:22:33,656 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 54.5MB. Free memory is still 35.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:22:33,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 587.56ms. Allocated memory was 54.5MB in the beginning and 92.3MB in the end (delta: 37.7MB). Free memory was 29.7MB in the beginning and 74.4MB in the end (delta: -44.7MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2021-12-06 18:22:33,656 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.50ms. Allocated memory is still 92.3MB. Free memory was 74.4MB in the beginning and 71.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:22:33,656 INFO L158 Benchmark]: Boogie Preprocessor took 40.31ms. Allocated memory is still 92.3MB. Free memory was 71.3MB in the beginning and 68.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:22:33,657 INFO L158 Benchmark]: RCFGBuilder took 778.48ms. Allocated memory is still 92.3MB. Free memory was 68.7MB in the beginning and 67.0MB in the end (delta: 1.7MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2021-12-06 18:22:33,657 INFO L158 Benchmark]: TraceAbstraction took 144192.78ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 66.5MB in the beginning and 26.8MB in the end (delta: 39.7MB). Peak memory consumption was 57.8MB. Max. memory is 16.1GB. [2021-12-06 18:22:33,657 INFO L158 Benchmark]: Witness Printer took 3.03ms. Allocated memory is still 111.1MB. Free memory is still 26.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:22:33,657 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 54.5MB. Free memory is still 35.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 587.56ms. Allocated memory was 54.5MB in the beginning and 92.3MB in the end (delta: 37.7MB). Free memory was 29.7MB in the beginning and 74.4MB in the end (delta: -44.7MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.50ms. Allocated memory is still 92.3MB. Free memory was 74.4MB in the beginning and 71.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.31ms. Allocated memory is still 92.3MB. Free memory was 71.3MB in the beginning and 68.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 778.48ms. Allocated memory is still 92.3MB. Free memory was 68.7MB in the beginning and 67.0MB in the end (delta: 1.7MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. * TraceAbstraction took 144192.78ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 66.5MB in the beginning and 26.8MB in the end (delta: 39.7MB). Peak memory consumption was 57.8MB. Max. memory is 16.1GB. * Witness Printer took 3.03ms. Allocated memory is still 111.1MB. Free memory is still 26.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 808]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L822-L825] static int (*dispatch_type[])(struct hid_parser *parser, struct hid_item *item) = { hid_parser_main }; [L861] struct hid_device dev; [L869] CALL entry_point() [L863] CALL probe_23(&dev) [L844] int ret = - -3; [L845] CALL, EXPR ldv_malloc(sizeof(struct hid_report_enum)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L845] RET, EXPR ldv_malloc(sizeof(struct hid_report_enum)) [L845] struct hid_report_enum *p = (struct hid_report_enum *)ldv_malloc(sizeof(struct hid_report_enum)); [L846] COND FALSE !(p==0) [L848] CALL LDV_INIT_LIST_HEAD(&p->report_list) [L540] list->next = list [L541] list->prev = list [L848] RET LDV_INIT_LIST_HEAD(&p->report_list) [L849] dev->report_enum = p [L850] CALL hid_open_report(dev) [L814] struct hid_parser *parser; [L815] struct hid_item item; [L816] CALL, EXPR ldv_zalloc(sizeof(struct hid_parser)) [L533] EXPR, FCALL calloc(size, 1) [L533] return calloc(size, 1); [L816] RET, EXPR ldv_zalloc(sizeof(struct hid_parser)) [L816] parser = ldv_zalloc(sizeof(struct hid_parser)) [L817] COND FALSE !(!parser) [L820] parser->device = device [L821] CALL, EXPR ldv_positive() [L519] int r = __VERIFIER_nondet_int(); [L520] COND FALSE !(r>0) [L521] return 1; [L821] RET, EXPR ldv_positive() [L821] parser->report_id = ldv_positive() [L826] CALL, EXPR fetch_item(&item) [L778] COND FALSE !(__VERIFIER_nondet_int()) [L781] item->type = 0 [L782] item->a = __VERIFIER_nondet_int() [L783] item->b = __VERIFIER_nondet_int() [L784] item->c = __VERIFIER_nondet_int() [L785] return 0; [L826] RET, EXPR fetch_item(&item) [L826] COND TRUE fetch_item(&item)!=-1 [L827] EXPR item.type [L827] EXPR dispatch_type[item.type] [L827] CALL dispatch_type[item.type](parser, &item) [L802] EXPR parser->device [L802] EXPR parser->report_id [L802] CALL, EXPR hid_register_report(parser->device, parser->report_id) [L788] EXPR device->report_enum [L788] struct hid_report_enum *report_enum = device->report_enum; [L789] struct hid_report *report; [L790] COND FALSE !(id >= 256) [L792] report_enum->report_id_hash[id] [L792] COND TRUE report_enum->report_id_hash[id] [L793] EXPR report_enum->report_id_hash[id] [L793] return report_enum->report_id_hash[id]; [L802] RET, EXPR hid_register_report(parser->device, parser->report_id) [L802] struct hid_report *report = hid_register_report(parser->device, parser->report_id); [L803] return report!=((void *)0); [L827] RET dispatch_type[item.type](parser, &item) [L827] COND TRUE dispatch_type[item.type](parser, &item) [L835] EXPR device->report_enum [L835] CALL free_reports(device->report_enum) [L806] struct hid_report *p; [L807] struct hid_report *n; [L808] (&report_enum->report_list)->next - UnprovableResult [Line: 808]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 810]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 810]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 810]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 820]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 820]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 821]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 821]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 784]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 784]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 827]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 827]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 827]: Unable to prove that array index is always in bounds Unable to prove that array index is always in bounds Reason: Not analyzed. - UnprovableResult [Line: 802]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 802]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 802]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 802]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 792]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 792]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 793]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 793]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 797]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 797]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 832]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 832]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 832]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 836]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 836]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 836]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 855]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 855]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 855]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 841]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 841]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 841]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 841]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 841]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 868]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 205 locations, 79 error locations. Started 1 CEGAR loops. OverallTime: 144.1s, OverallIterations: 48, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 25.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4594 SdHoareTripleChecker+Valid, 19.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4515 mSDsluCounter, 46190 SdHoareTripleChecker+Invalid, 17.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 12016 IncrementalHoareTripleChecker+Unchecked, 37766 mSDsCounter, 392 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11277 IncrementalHoareTripleChecker+Invalid, 23685 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 392 mSolverCounterUnsat, 8424 mSDtfsCounter, 11277 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1988 GetRequests, 1408 SyntacticMatches, 41 SemanticMatches, 539 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2135 ImplicationChecksByTransitivity, 44.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=333occurred in iteration=32, InterpolantAutomatonStates: 553, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 47 MinimizatonAttempts, 1331 StatesRemovedByMinimization, 40 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 6.2s SatisfiabilityAnalysisTime, 97.1s InterpolantComputationTime, 1989 NumberOfCodeBlocks, 1989 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 1881 ConstructedInterpolants, 652 QuantifiedInterpolants, 43248 SizeOfPredicates, 515 NumberOfNonLiveVariables, 11515 ConjunctsInSsa, 1291 ConjunctsInUnsatCore, 47 InterpolantComputations, 47 PerfectInterpolantSequences, 12/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-06 18:22:33,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893c9130-5e2d-4df4-8a60-a41472a94389/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN