./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 e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8 --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:52:13,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:52:13,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:52:13,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:52:13,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:52:13,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:52:13,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:52:13,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:52:13,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:52:13,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:52:13,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:52:13,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:52:13,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:52:13,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:52:13,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:52:13,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:52:13,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:52:13,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:52:13,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:52:13,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:52:13,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:52:13,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:52:13,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:52:13,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:52:13,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:52:13,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:52:13,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:52:13,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:52:13,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:52:13,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:52:13,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:52:13,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:52:13,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:52:13,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:52:13,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:52:13,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:52:13,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:52:13,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:52:13,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:52:13,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:52:13,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:52:13,509 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 12:52:13,552 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:52:13,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:52:13,553 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:52:13,553 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:52:13,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:52:13,554 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:52:13,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:52:13,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:52:13,555 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:52:13,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:52:13,557 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:52:13,557 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:52:13,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:52:13,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:52:13,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:52:13,558 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:52:13,559 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:52:13,559 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:52:13,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:52:13,559 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:52:13,559 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:52:13,560 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:52:13,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:52:13,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:52:13,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:52:13,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:52:13,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:52:13,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:52:13,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:52:13,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:52:13,564 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_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 [2022-11-16 12:52:13,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:52:13,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:52:13,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:52:13,884 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:52:13,885 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:52:13,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2022-11-16 12:52:13,974 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/data/8c2dd4604/2b8037835b8c48508047bea5274928a7/FLAGa4f03e9ce [2022-11-16 12:52:14,569 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:52:14,570 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2022-11-16 12:52:14,586 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/data/8c2dd4604/2b8037835b8c48508047bea5274928a7/FLAGa4f03e9ce [2022-11-16 12:52:14,872 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/data/8c2dd4604/2b8037835b8c48508047bea5274928a7 [2022-11-16 12:52:14,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:52:14,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:52:14,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:52:14,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:52:14,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:52:14,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:52:14" (1/1) ... [2022-11-16 12:52:14,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@454b590b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:14, skipping insertion in model container [2022-11-16 12:52:14,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:52:14" (1/1) ... [2022-11-16 12:52:14,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:52:14,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:52:15,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:52:15,451 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:212) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:628) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-16 12:52:15,461 INFO L158 Benchmark]: Toolchain (without parser) took 582.40ms. Allocated memory is still 100.7MB. Free memory was 63.5MB in the beginning and 72.3MB in the end (delta: -8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:52:15,463 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 100.7MB. Free memory was 70.6MB in the beginning and 70.6MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:52:15,465 INFO L158 Benchmark]: CACSL2BoogieTranslator took 579.39ms. Allocated memory is still 100.7MB. Free memory was 63.3MB in the beginning and 72.3MB in the end (delta: -9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:52:15,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 100.7MB. Free memory was 70.6MB in the beginning and 70.6MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 579.39ms. Allocated memory is still 100.7MB. Free memory was 63.3MB in the beginning and 72.3MB in the end (delta: -9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: IllegalArgumentException: This array type is incomplete! Cannot extract actual dimensions. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: IllegalArgumentException: This array type is incomplete! Cannot extract actual dimensions.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CTranslationUtil.getConstantFirstDimensionOfArray(CTranslationUtil.java:210) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8 --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:52:17,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:52:17,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:52:17,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:52:17,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:52:17,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:52:17,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:52:17,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:52:17,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:52:17,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:52:17,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:52:17,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:52:17,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:52:17,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:52:17,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:52:17,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:52:17,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:52:17,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:52:17,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:52:17,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:52:17,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:52:17,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:52:17,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:52:17,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:52:17,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:52:17,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:52:17,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:52:17,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:52:17,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:52:17,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:52:17,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:52:17,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:52:17,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:52:17,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:52:17,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:52:17,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:52:17,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:52:17,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:52:17,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:52:17,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:52:17,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:52:17,797 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-16 12:52:17,838 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:52:17,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:52:17,839 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:52:17,840 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:52:17,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:52:17,841 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:52:17,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:52:17,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:52:17,843 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:52:17,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:52:17,845 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:52:17,845 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:52:17,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:52:17,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:52:17,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:52:17,846 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:52:17,846 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:52:17,847 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:52:17,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:52:17,847 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:52:17,847 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:52:17,848 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:52:17,848 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:52:17,848 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:52:17,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:52:17,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:52:17,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:52:17,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:52:17,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:52:17,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:52:17,850 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:52:17,850 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:52:17,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:52:17,851 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_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 [2022-11-16 12:52:18,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:52:18,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:52:18,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:52:18,334 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:52:18,337 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:52:18,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2022-11-16 12:52:18,413 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/data/71e46562b/202544880ab14d10a071a7eb10f10343/FLAG345c15a2d [2022-11-16 12:52:19,205 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:52:19,209 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2022-11-16 12:52:19,228 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/data/71e46562b/202544880ab14d10a071a7eb10f10343/FLAG345c15a2d [2022-11-16 12:52:19,245 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/data/71e46562b/202544880ab14d10a071a7eb10f10343 [2022-11-16 12:52:19,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:52:19,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:52:19,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:52:19,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:52:19,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:52:19,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:52:19" (1/1) ... [2022-11-16 12:52:19,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359a6690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:19, skipping insertion in model container [2022-11-16 12:52:19,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:52:19" (1/1) ... [2022-11-16 12:52:19,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:52:19,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:52:19,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:52:20,009 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 12:52:20,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:52:20,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:52:20,139 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:52:20,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:52:20,278 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:52:20,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:20 WrapperNode [2022-11-16 12:52:20,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:52:20,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:52:20,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:52:20,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:52:20,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:20" (1/1) ... [2022-11-16 12:52:20,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:20" (1/1) ... [2022-11-16 12:52:20,392 INFO L138 Inliner]: procedures = 175, calls = 119, calls flagged for inlining = 30, calls inlined = 15, statements flattened = 198 [2022-11-16 12:52:20,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:52:20,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:52:20,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:52:20,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:52:20,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:20" (1/1) ... [2022-11-16 12:52:20,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:20" (1/1) ... [2022-11-16 12:52:20,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:20" (1/1) ... [2022-11-16 12:52:20,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:20" (1/1) ... [2022-11-16 12:52:20,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:20" (1/1) ... [2022-11-16 12:52:20,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:20" (1/1) ... [2022-11-16 12:52:20,435 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:20" (1/1) ... [2022-11-16 12:52:20,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:20" (1/1) ... [2022-11-16 12:52:20,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:52:20,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:52:20,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:52:20,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:52:20,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:20" (1/1) ... [2022-11-16 12:52:20,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:52:20,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:52:20,479 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:52:20,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:52:20,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 12:52:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2022-11-16 12:52:20,538 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2022-11-16 12:52:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-11-16 12:52:20,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-11-16 12:52:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 12:52:20,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 12:52:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:52:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:52:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2022-11-16 12:52:20,540 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2022-11-16 12:52:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:52:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:52:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:52:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 12:52:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:52:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 12:52:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2022-11-16 12:52:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2022-11-16 12:52:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-16 12:52:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-16 12:52:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:52:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:52:20,854 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:52:20,857 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:52:21,932 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:52:21,949 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:52:21,950 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:52:21,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:52:21 BoogieIcfgContainer [2022-11-16 12:52:21,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:52:21,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:52:21,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:52:21,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:52:21,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:52:19" (1/3) ... [2022-11-16 12:52:21,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c57ff62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:52:21, skipping insertion in model container [2022-11-16 12:52:21,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:20" (2/3) ... [2022-11-16 12:52:21,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c57ff62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:52:21, skipping insertion in model container [2022-11-16 12:52:21,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:52:21" (3/3) ... [2022-11-16 12:52:21,972 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test23_1.i [2022-11-16 12:52:21,997 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:52:21,998 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 79 error locations. [2022-11-16 12:52:22,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:52:22,096 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@302222f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:52:22,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2022-11-16 12:52:22,103 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) [2022-11-16 12:52:22,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 12:52:22,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:22,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:22,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:22,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:22,123 INFO L85 PathProgramCache]: Analyzing trace with hash 441980658, now seen corresponding path program 1 times [2022-11-16 12:52:22,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:22,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451132731] [2022-11-16 12:52:22,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:22,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:22,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:22,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:22,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 12:52:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:22,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:52:22,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:22,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:52:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:22,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:22,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:22,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451132731] [2022-11-16 12:52:22,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451132731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:22,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:22,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:52:22,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447004732] [2022-11-16 12:52:22,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:22,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:52:22,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:22,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:52:22,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:52:22,549 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) [2022-11-16 12:52:23,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:23,698 INFO L93 Difference]: Finished difference Result 232 states and 249 transitions. [2022-11-16 12:52:23,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:52:23,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-16 12:52:23,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:23,715 INFO L225 Difference]: With dead ends: 232 [2022-11-16 12:52:23,715 INFO L226 Difference]: Without dead ends: 228 [2022-11-16 12:52:23,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:52:23,721 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 28 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:23,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 851 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 12:52:23,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-16 12:52:23,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 212. [2022-11-16 12:52:23,771 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) [2022-11-16 12:52:23,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 229 transitions. [2022-11-16 12:52:23,780 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 229 transitions. Word has length 12 [2022-11-16 12:52:23,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:23,780 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 229 transitions. [2022-11-16 12:52:23,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:52:23,781 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 229 transitions. [2022-11-16 12:52:23,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 12:52:23,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:23,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:23,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:23,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:23,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:23,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:23,983 INFO L85 PathProgramCache]: Analyzing trace with hash 441980659, now seen corresponding path program 1 times [2022-11-16 12:52:23,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:23,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043354720] [2022-11-16 12:52:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:23,984 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:23,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:23,985 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:24,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 12:52:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:24,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:52:24,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:24,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:52:24,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:24,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:24,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:24,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043354720] [2022-11-16 12:52:24,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043354720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:24,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:24,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:52:24,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043855697] [2022-11-16 12:52:24,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:24,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:52:24,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:24,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:52:24,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:52:24,312 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) [2022-11-16 12:52:25,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:25,494 INFO L93 Difference]: Finished difference Result 237 states and 253 transitions. [2022-11-16 12:52:25,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:52:25,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-16 12:52:25,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:25,505 INFO L225 Difference]: With dead ends: 237 [2022-11-16 12:52:25,505 INFO L226 Difference]: Without dead ends: 237 [2022-11-16 12:52:25,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:52:25,506 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 35 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:25,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1102 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 12:52:25,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-16 12:52:25,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 212. [2022-11-16 12:52:25,529 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) [2022-11-16 12:52:25,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 227 transitions. [2022-11-16 12:52:25,532 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 227 transitions. Word has length 12 [2022-11-16 12:52:25,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:25,532 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 227 transitions. [2022-11-16 12:52:25,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:52:25,532 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 227 transitions. [2022-11-16 12:52:25,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 12:52:25,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:25,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:25,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:25,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:25,734 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:25,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:25,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2110176303, now seen corresponding path program 1 times [2022-11-16 12:52:25,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:25,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410758403] [2022-11-16 12:52:25,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:25,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:25,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:25,742 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:25,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 12:52:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:25,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:52:25,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:25,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:25,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:25,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:25,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410758403] [2022-11-16 12:52:25,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410758403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:25,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:25,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:52:25,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103233535] [2022-11-16 12:52:25,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:25,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:52:25,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:25,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:52:25,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:52:25,900 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) [2022-11-16 12:52:25,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:25,952 INFO L93 Difference]: Finished difference Result 224 states and 239 transitions. [2022-11-16 12:52:25,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:52:25,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-16 12:52:25,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:25,958 INFO L225 Difference]: With dead ends: 224 [2022-11-16 12:52:25,958 INFO L226 Difference]: Without dead ends: 224 [2022-11-16 12:52:25,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:52:25,963 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 20 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:25,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 844 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:52:25,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-16 12:52:25,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 203. [2022-11-16 12:52:25,983 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) [2022-11-16 12:52:25,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 217 transitions. [2022-11-16 12:52:25,986 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 217 transitions. Word has length 12 [2022-11-16 12:52:25,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:25,986 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 217 transitions. [2022-11-16 12:52:25,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:52:25,987 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 217 transitions. [2022-11-16 12:52:25,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 12:52:25,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:25,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:26,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-16 12:52:26,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:26,202 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:26,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:26,203 INFO L85 PathProgramCache]: Analyzing trace with hash 441895411, now seen corresponding path program 1 times [2022-11-16 12:52:26,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:26,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064267591] [2022-11-16 12:52:26,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:26,204 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:26,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:26,205 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:26,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 12:52:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:26,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:52:26,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:26,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:26,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:26,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064267591] [2022-11-16 12:52:26,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064267591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:26,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:26,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:52:26,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041093988] [2022-11-16 12:52:26,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:26,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:52:26,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:26,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:52:26,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:52:26,351 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) [2022-11-16 12:52:26,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:26,411 INFO L93 Difference]: Finished difference Result 224 states and 238 transitions. [2022-11-16 12:52:26,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:52:26,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-16 12:52:26,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:26,413 INFO L225 Difference]: With dead ends: 224 [2022-11-16 12:52:26,413 INFO L226 Difference]: Without dead ends: 224 [2022-11-16 12:52:26,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:52:26,417 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 129 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:26,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 774 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:52:26,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-16 12:52:26,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 203. [2022-11-16 12:52:26,449 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) [2022-11-16 12:52:26,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 216 transitions. [2022-11-16 12:52:26,455 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 216 transitions. Word has length 12 [2022-11-16 12:52:26,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:26,455 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 216 transitions. [2022-11-16 12:52:26,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:52:26,456 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 216 transitions. [2022-11-16 12:52:26,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 12:52:26,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:26,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:26,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:26,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:26,674 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:26,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:26,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2110261550, now seen corresponding path program 1 times [2022-11-16 12:52:26,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:26,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312989303] [2022-11-16 12:52:26,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:26,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:26,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:26,676 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:26,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 12:52:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:26,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:52:26,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:26,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:26,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:26,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:26,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312989303] [2022-11-16 12:52:26,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312989303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:26,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:26,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:52:26,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643723259] [2022-11-16 12:52:26,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:26,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:52:26,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:26,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:52:26,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:52:26,800 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) [2022-11-16 12:52:26,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:26,853 INFO L93 Difference]: Finished difference Result 208 states and 220 transitions. [2022-11-16 12:52:26,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:52:26,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-16 12:52:26,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:26,855 INFO L225 Difference]: With dead ends: 208 [2022-11-16 12:52:26,855 INFO L226 Difference]: Without dead ends: 208 [2022-11-16 12:52:26,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:52:26,856 INFO L413 NwaCegarLoop]: 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 [2022-11-16 12:52:26,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 726 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:52:26,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-16 12:52:26,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 205. [2022-11-16 12:52:26,868 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) [2022-11-16 12:52:26,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 218 transitions. [2022-11-16 12:52:26,871 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 218 transitions. Word has length 12 [2022-11-16 12:52:26,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:26,872 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 218 transitions. [2022-11-16 12:52:26,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:52:26,872 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 218 transitions. [2022-11-16 12:52:26,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:52:26,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:26,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:26,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:27,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:27,093 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:27,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:27,094 INFO L85 PathProgramCache]: Analyzing trace with hash -993578524, now seen corresponding path program 1 times [2022-11-16 12:52:27,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:27,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951931082] [2022-11-16 12:52:27,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:27,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:27,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:27,095 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:27,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 12:52:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:27,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:52:27,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:27,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:27,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:27,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:27,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951931082] [2022-11-16 12:52:27,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951931082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:27,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:27,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:52:27,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635242447] [2022-11-16 12:52:27,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:27,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:52:27,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:27,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:52:27,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:52:27,208 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) [2022-11-16 12:52:27,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:27,711 INFO L93 Difference]: Finished difference Result 217 states and 232 transitions. [2022-11-16 12:52:27,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:52:27,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-16 12:52:27,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:27,713 INFO L225 Difference]: With dead ends: 217 [2022-11-16 12:52:27,713 INFO L226 Difference]: Without dead ends: 209 [2022-11-16 12:52:27,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:52:27,714 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 51 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:27,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 386 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:52:27,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-16 12:52:27,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 199. [2022-11-16 12:52:27,721 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) [2022-11-16 12:52:27,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 211 transitions. [2022-11-16 12:52:27,723 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 211 transitions. Word has length 13 [2022-11-16 12:52:27,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:27,723 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 211 transitions. [2022-11-16 12:52:27,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:52:27,723 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 211 transitions. [2022-11-16 12:52:27,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:52:27,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:27,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:27,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:27,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:27,938 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:27,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:27,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1907571031, now seen corresponding path program 1 times [2022-11-16 12:52:27,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:27,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797774870] [2022-11-16 12:52:27,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:27,939 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:27,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:27,940 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:27,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 12:52:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:28,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:52:28,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:28,215 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_23 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_23))))) is different from true [2022-11-16 12:52:28,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:52:28,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:52:28,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:28,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:28,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:28,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797774870] [2022-11-16 12:52:28,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797774870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:28,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:28,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:52:28,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492680805] [2022-11-16 12:52:28,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:28,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:52:28,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:28,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:52:28,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2022-11-16 12:52:28,355 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) [2022-11-16 12:52:29,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:29,218 INFO L93 Difference]: Finished difference Result 209 states and 224 transitions. [2022-11-16 12:52:29,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:52:29,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-16 12:52:29,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:29,220 INFO L225 Difference]: With dead ends: 209 [2022-11-16 12:52:29,220 INFO L226 Difference]: Without dead ends: 209 [2022-11-16 12:52:29,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=76, Unknown=1, NotChecked=18, Total=132 [2022-11-16 12:52:29,221 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 62 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 221 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:29,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 328 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 269 Invalid, 0 Unknown, 221 Unchecked, 0.7s Time] [2022-11-16 12:52:29,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-16 12:52:29,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 198. [2022-11-16 12:52:29,228 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) [2022-11-16 12:52:29,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 210 transitions. [2022-11-16 12:52:29,229 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 210 transitions. Word has length 16 [2022-11-16 12:52:29,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:29,230 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 210 transitions. [2022-11-16 12:52:29,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:52:29,231 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 210 transitions. [2022-11-16 12:52:29,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:52:29,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:29,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:29,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:29,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:29,446 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:29,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:29,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1907571030, now seen corresponding path program 1 times [2022-11-16 12:52:29,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:29,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320920221] [2022-11-16 12:52:29,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:29,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:29,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:29,451 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:29,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 12:52:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:29,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:52:29,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:29,659 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_38 (_ BitVec 1))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_38) |c_#valid|)))) is different from true [2022-11-16 12:52:29,722 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:52:29,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:52:29,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:29,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:29,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:29,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320920221] [2022-11-16 12:52:29,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320920221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:29,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:29,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:52:29,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674621164] [2022-11-16 12:52:29,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:29,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:52:29,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:29,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:52:29,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2022-11-16 12:52:29,774 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) [2022-11-16 12:52:30,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:30,696 INFO L93 Difference]: Finished difference Result 250 states and 265 transitions. [2022-11-16 12:52:30,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:52:30,696 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2022-11-16 12:52:30,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:30,698 INFO L225 Difference]: With dead ends: 250 [2022-11-16 12:52:30,698 INFO L226 Difference]: Without dead ends: 250 [2022-11-16 12:52:30,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=61, Unknown=1, NotChecked=16, Total=110 [2022-11-16 12:52:30,699 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 198 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:30,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 443 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 432 Invalid, 0 Unknown, 263 Unchecked, 0.8s Time] [2022-11-16 12:52:30,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-16 12:52:30,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 208. [2022-11-16 12:52:30,706 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) [2022-11-16 12:52:30,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 226 transitions. [2022-11-16 12:52:30,707 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 226 transitions. Word has length 16 [2022-11-16 12:52:30,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:30,708 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 226 transitions. [2022-11-16 12:52:30,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 12:52:30,708 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 226 transitions. [2022-11-16 12:52:30,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 12:52:30,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:30,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:30,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:30,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:30,922 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:30,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:30,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1544157348, now seen corresponding path program 1 times [2022-11-16 12:52:30,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:30,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926541702] [2022-11-16 12:52:30,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:30,923 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:30,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:30,925 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:30,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 12:52:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:31,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:52:31,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:31,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:52:31,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:31,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:31,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:31,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926541702] [2022-11-16 12:52:31,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926541702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:31,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:31,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:52:31,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413192429] [2022-11-16 12:52:31,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:31,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:52:31,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:31,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:52:31,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:52:31,125 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) [2022-11-16 12:52:32,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:32,025 INFO L93 Difference]: Finished difference Result 264 states and 290 transitions. [2022-11-16 12:52:32,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:52:32,026 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-11-16 12:52:32,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:32,028 INFO L225 Difference]: With dead ends: 264 [2022-11-16 12:52:32,028 INFO L226 Difference]: Without dead ends: 264 [2022-11-16 12:52:32,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:52:32,029 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 71 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:32,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 653 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 12:52:32,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-16 12:52:32,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 236. [2022-11-16 12:52:32,036 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) [2022-11-16 12:52:32,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 282 transitions. [2022-11-16 12:52:32,038 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 282 transitions. Word has length 25 [2022-11-16 12:52:32,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:32,038 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 282 transitions. [2022-11-16 12:52:32,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:52:32,042 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 282 transitions. [2022-11-16 12:52:32,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 12:52:32,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:32,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:32,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:32,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:32,255 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:32,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:32,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1544157349, now seen corresponding path program 1 times [2022-11-16 12:52:32,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:32,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989207906] [2022-11-16 12:52:32,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:32,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:32,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:32,258 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:32,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 12:52:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:32,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:52:32,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:32,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:52:32,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:32,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:32,515 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:32,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989207906] [2022-11-16 12:52:32,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989207906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:32,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:32,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:52:32,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123549705] [2022-11-16 12:52:32,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:32,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:52:32,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:32,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:52:32,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:52:32,516 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) [2022-11-16 12:52:33,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:33,570 INFO L93 Difference]: Finished difference Result 296 states and 325 transitions. [2022-11-16 12:52:33,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:52:33,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-11-16 12:52:33,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:33,572 INFO L225 Difference]: With dead ends: 296 [2022-11-16 12:52:33,572 INFO L226 Difference]: Without dead ends: 296 [2022-11-16 12:52:33,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:52:33,573 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 105 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:33,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 651 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 12:52:33,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-11-16 12:52:33,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 238. [2022-11-16 12:52:33,581 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) [2022-11-16 12:52:33,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 287 transitions. [2022-11-16 12:52:33,583 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 287 transitions. Word has length 25 [2022-11-16 12:52:33,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:33,584 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 287 transitions. [2022-11-16 12:52:33,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:52:33,584 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 287 transitions. [2022-11-16 12:52:33,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 12:52:33,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:33,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:33,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:33,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:33,798 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:33,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:33,798 INFO L85 PathProgramCache]: Analyzing trace with hash -2123399988, now seen corresponding path program 1 times [2022-11-16 12:52:33,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:33,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121777636] [2022-11-16 12:52:33,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:33,799 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:33,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:33,800 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:33,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 12:52:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:33,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:52:33,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:33,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:33,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:33,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:33,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121777636] [2022-11-16 12:52:33,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121777636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:33,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:33,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:52:33,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318762969] [2022-11-16 12:52:33,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:33,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:52:33,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:33,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:52:33,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:52:33,975 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) [2022-11-16 12:52:34,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:34,089 INFO L93 Difference]: Finished difference Result 238 states and 286 transitions. [2022-11-16 12:52:34,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:52:34,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-11-16 12:52:34,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:34,091 INFO L225 Difference]: With dead ends: 238 [2022-11-16 12:52:34,091 INFO L226 Difference]: Without dead ends: 238 [2022-11-16 12:52:34,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:52:34,092 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 120 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:34,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 832 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:52:34,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-16 12:52:34,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2022-11-16 12:52:34,098 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) [2022-11-16 12:52:34,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 286 transitions. [2022-11-16 12:52:34,100 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 286 transitions. Word has length 27 [2022-11-16 12:52:34,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:34,100 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 286 transitions. [2022-11-16 12:52:34,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:52:34,101 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 286 transitions. [2022-11-16 12:52:34,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 12:52:34,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:34,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:34,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:34,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:34,315 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:34,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:34,316 INFO L85 PathProgramCache]: Analyzing trace with hash -308565232, now seen corresponding path program 1 times [2022-11-16 12:52:34,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:34,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159646501] [2022-11-16 12:52:34,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:34,317 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:34,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:34,318 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:34,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-16 12:52:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:34,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:52:34,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:34,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:52:34,630 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 12:52:34,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 12:52:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:34,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:34,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:34,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159646501] [2022-11-16 12:52:34,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159646501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:34,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:34,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:52:34,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060961995] [2022-11-16 12:52:34,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:34,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:52:34,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:34,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:52:34,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:52:34,709 INFO L87 Difference]: Start difference. First operand 238 states and 286 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:52:35,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:35,780 INFO L93 Difference]: Finished difference Result 250 states and 294 transitions. [2022-11-16 12:52:35,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:52:35,780 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-11-16 12:52:35,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:35,782 INFO L225 Difference]: With dead ends: 250 [2022-11-16 12:52:35,782 INFO L226 Difference]: Without dead ends: 250 [2022-11-16 12:52:35,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:52:35,783 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 201 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:35,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 536 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 12:52:35,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-16 12:52:35,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 233. [2022-11-16 12:52:35,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 152 states have (on average 1.6776315789473684) internal successors, (255), 216 states have internal predecessors, (255), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 12:52:35,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 276 transitions. [2022-11-16 12:52:35,792 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 276 transitions. Word has length 33 [2022-11-16 12:52:35,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:35,792 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 276 transitions. [2022-11-16 12:52:35,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:52:35,793 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 276 transitions. [2022-11-16 12:52:35,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 12:52:35,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:35,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:35,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:35,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:35,995 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:35,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:35,995 INFO L85 PathProgramCache]: Analyzing trace with hash -308565231, now seen corresponding path program 1 times [2022-11-16 12:52:35,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:35,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140588314] [2022-11-16 12:52:35,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:35,996 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:35,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:35,998 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:36,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-16 12:52:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:36,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:52:36,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:36,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:52:36,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:52:36,266 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_213 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| v_ArrVal_213) |c_#length|)) (= (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|) (_ bv0 1)))) is different from true [2022-11-16 12:52:36,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:52:36,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:52:36,313 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:52:36,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:52:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:36,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:36,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:36,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140588314] [2022-11-16 12:52:36,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140588314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:36,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:36,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:52:36,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232453476] [2022-11-16 12:52:36,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:36,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:52:36,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:36,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:52:36,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2022-11-16 12:52:36,404 INFO L87 Difference]: Start difference. First operand 233 states and 276 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:52:37,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:37,719 INFO L93 Difference]: Finished difference Result 310 states and 341 transitions. [2022-11-16 12:52:37,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:52:37,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-11-16 12:52:37,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:37,721 INFO L225 Difference]: With dead ends: 310 [2022-11-16 12:52:37,721 INFO L226 Difference]: Without dead ends: 310 [2022-11-16 12:52:37,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=37, Unknown=1, NotChecked=12, Total=72 [2022-11-16 12:52:37,722 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 216 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 236 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:37,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 443 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 521 Invalid, 0 Unknown, 236 Unchecked, 1.2s Time] [2022-11-16 12:52:37,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-11-16 12:52:37,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 233. [2022-11-16 12:52:37,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 152 states have (on average 1.644736842105263) internal successors, (250), 216 states have internal predecessors, (250), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 12:52:37,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 271 transitions. [2022-11-16 12:52:37,734 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 271 transitions. Word has length 33 [2022-11-16 12:52:37,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:37,735 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 271 transitions. [2022-11-16 12:52:37,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:52:37,735 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 271 transitions. [2022-11-16 12:52:37,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 12:52:37,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:37,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:37,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:37,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:37,955 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:37,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:37,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1238063083, now seen corresponding path program 1 times [2022-11-16 12:52:37,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:37,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502727396] [2022-11-16 12:52:37,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:37,957 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:37,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:37,958 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:37,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 12:52:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:38,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:52:38,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:38,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:38,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:38,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502727396] [2022-11-16 12:52:38,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502727396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:38,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:38,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:52:38,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948613194] [2022-11-16 12:52:38,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:38,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:52:38,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:38,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:52:38,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:52:38,725 INFO L87 Difference]: Start difference. First operand 233 states and 271 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:52:38,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:38,778 INFO L93 Difference]: Finished difference Result 317 states and 359 transitions. [2022-11-16 12:52:38,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:52:38,779 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-11-16 12:52:38,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:38,781 INFO L225 Difference]: With dead ends: 317 [2022-11-16 12:52:38,781 INFO L226 Difference]: Without dead ends: 317 [2022-11-16 12:52:38,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:52:38,782 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 118 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:38,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 1224 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 152 Unchecked, 0.0s Time] [2022-11-16 12:52:38,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-11-16 12:52:38,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 250. [2022-11-16 12:52:38,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 168 states have (on average 1.5952380952380953) internal successors, (268), 232 states have internal predecessors, (268), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 12:52:38,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 289 transitions. [2022-11-16 12:52:38,791 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 289 transitions. Word has length 36 [2022-11-16 12:52:38,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:38,792 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 289 transitions. [2022-11-16 12:52:38,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:52:38,792 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 289 transitions. [2022-11-16 12:52:38,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 12:52:38,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:38,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:38,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:39,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:39,013 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONARRAY_INDEX === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:39,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:39,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1238063271, now seen corresponding path program 1 times [2022-11-16 12:52:39,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:39,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425867183] [2022-11-16 12:52:39,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:39,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:39,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:39,015 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:39,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 12:52:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:39,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:52:39,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:39,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:39,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:39,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425867183] [2022-11-16 12:52:39,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425867183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:39,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:39,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:52:39,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898151942] [2022-11-16 12:52:39,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:39,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:52:39,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:39,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:52:39,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:52:39,203 INFO L87 Difference]: Start difference. First operand 250 states and 289 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:52:39,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:39,242 INFO L93 Difference]: Finished difference Result 296 states and 339 transitions. [2022-11-16 12:52:39,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:52:39,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-11-16 12:52:39,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:39,246 INFO L225 Difference]: With dead ends: 296 [2022-11-16 12:52:39,246 INFO L226 Difference]: Without dead ends: 296 [2022-11-16 12:52:39,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:52:39,250 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 37 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:39,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 589 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:52:39,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-11-16 12:52:39,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 256. [2022-11-16 12:52:39,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 174 states have (on average 1.5747126436781609) internal successors, (274), 238 states have internal predecessors, (274), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 12:52:39,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 295 transitions. [2022-11-16 12:52:39,263 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 295 transitions. Word has length 36 [2022-11-16 12:52:39,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:39,263 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 295 transitions. [2022-11-16 12:52:39,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:52:39,264 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 295 transitions. [2022-11-16 12:52:39,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-16 12:52:39,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:39,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:39,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:39,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:39,475 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:39,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:39,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1119933624, now seen corresponding path program 1 times [2022-11-16 12:52:39,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:39,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021304487] [2022-11-16 12:52:39,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:39,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:39,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:39,477 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:39,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-16 12:52:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:39,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:52:39,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:39,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:39,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:39,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021304487] [2022-11-16 12:52:39,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021304487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:39,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:39,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:52:39,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893154850] [2022-11-16 12:52:39,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:39,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:52:39,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:39,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:52:39,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:52:39,681 INFO L87 Difference]: Start difference. First operand 256 states and 295 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:52:39,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:39,716 INFO L93 Difference]: Finished difference Result 279 states and 320 transitions. [2022-11-16 12:52:39,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:52:39,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-16 12:52:39,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:39,719 INFO L225 Difference]: With dead ends: 279 [2022-11-16 12:52:39,719 INFO L226 Difference]: Without dead ends: 279 [2022-11-16 12:52:39,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:52:39,721 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 43 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:39,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 587 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:52:39,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-11-16 12:52:39,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 258. [2022-11-16 12:52:39,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 176 states have (on average 1.5681818181818181) internal successors, (276), 240 states have internal predecessors, (276), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 12:52:39,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 297 transitions. [2022-11-16 12:52:39,733 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 297 transitions. Word has length 40 [2022-11-16 12:52:39,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:39,734 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 297 transitions. [2022-11-16 12:52:39,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:52:39,734 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 297 transitions. [2022-11-16 12:52:39,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-16 12:52:39,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:39,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:39,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:39,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:39,950 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:39,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:39,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1780653040, now seen corresponding path program 1 times [2022-11-16 12:52:39,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:39,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985301630] [2022-11-16 12:52:39,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:39,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:39,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:39,953 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:39,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 12:52:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:40,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 12:52:40,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:42,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:52:42,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:52:42,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:52:42,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:52:42,742 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:52:42,743 INFO L350 Elim1Store]: Elim1 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 12 treesize of output 14 [2022-11-16 12:52:43,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:43,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:43,016 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:43,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985301630] [2022-11-16 12:52:43,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985301630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:43,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:43,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:52:43,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340653199] [2022-11-16 12:52:43,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:43,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:52:43,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:43,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:52:43,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=104, Unknown=2, NotChecked=0, Total=132 [2022-11-16 12:52:43,018 INFO L87 Difference]: Start difference. First operand 258 states and 297 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:52:49,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:49,529 INFO L93 Difference]: Finished difference Result 296 states and 331 transitions. [2022-11-16 12:52:49,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:52:49,530 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-11-16 12:52:49,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:49,532 INFO L225 Difference]: With dead ends: 296 [2022-11-16 12:52:49,532 INFO L226 Difference]: Without dead ends: 296 [2022-11-16 12:52:49,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=74, Invalid=300, Unknown=6, NotChecked=0, Total=380 [2022-11-16 12:52:49,533 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 343 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 230 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:49,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 567 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 880 Invalid, 0 Unknown, 230 Unchecked, 2.2s Time] [2022-11-16 12:52:49,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-11-16 12:52:49,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 258. [2022-11-16 12:52:49,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 178 states have (on average 1.550561797752809) internal successors, (276), 239 states have internal predecessors, (276), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 12:52:49,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 297 transitions. [2022-11-16 12:52:49,541 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 297 transitions. Word has length 42 [2022-11-16 12:52:49,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:49,542 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 297 transitions. [2022-11-16 12:52:49,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:52:49,542 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 297 transitions. [2022-11-16 12:52:49,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-16 12:52:49,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:49,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:49,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:49,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:49,757 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:49,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:49,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1780653039, now seen corresponding path program 1 times [2022-11-16 12:52:49,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:49,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976187104] [2022-11-16 12:52:49,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:49,759 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:49,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:49,760 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:49,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-16 12:52:50,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:50,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:52:50,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:50,207 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:52:50,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-16 12:52:50,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-16 12:52:50,447 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:52:50,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:52:50,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:52:50,886 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:52:50,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 31 [2022-11-16 12:52:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:50,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:50,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:50,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976187104] [2022-11-16 12:52:50,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976187104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:50,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:50,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:52:50,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739607188] [2022-11-16 12:52:50,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:50,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:52:50,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:50,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:52:50,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:52:50,978 INFO L87 Difference]: Start difference. First operand 258 states and 297 transitions. Second operand has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:52:51,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:51,640 INFO L93 Difference]: Finished difference Result 269 states and 311 transitions. [2022-11-16 12:52:51,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:52:51,641 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 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 42 [2022-11-16 12:52:51,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:51,642 INFO L225 Difference]: With dead ends: 269 [2022-11-16 12:52:51,642 INFO L226 Difference]: Without dead ends: 269 [2022-11-16 12:52:51,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:52:51,643 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 26 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 364 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:51,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1073 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 191 Invalid, 0 Unknown, 364 Unchecked, 0.5s Time] [2022-11-16 12:52:51,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-11-16 12:52:51,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 266. [2022-11-16 12:52:51,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 186 states have (on average 1.532258064516129) internal successors, (285), 247 states have internal predecessors, (285), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 12:52:51,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 306 transitions. [2022-11-16 12:52:51,651 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 306 transitions. Word has length 42 [2022-11-16 12:52:51,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:51,652 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 306 transitions. [2022-11-16 12:52:51,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:52:51,652 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 306 transitions. [2022-11-16 12:52:51,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-16 12:52:51,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:51,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:51,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:51,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:51,872 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONARRAY_INDEX === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:51,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:51,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1855865600, now seen corresponding path program 1 times [2022-11-16 12:52:51,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:51,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278869121] [2022-11-16 12:52:51,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:51,873 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:51,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:51,874 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:51,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-16 12:52:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:52,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:52:52,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:52,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:52:52,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:52:52,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:52:52,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 36 [2022-11-16 12:52:52,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 50 [2022-11-16 12:52:52,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 50 [2022-11-16 12:52:52,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 50 [2022-11-16 12:52:52,470 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:52:52,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 14 [2022-11-16 12:52:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:52,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:52,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:52,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278869121] [2022-11-16 12:52:52,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278869121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:52,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:52,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:52:52,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783771839] [2022-11-16 12:52:52,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:52,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:52:52,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:52,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:52:52,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:52:52,569 INFO L87 Difference]: Start difference. First operand 266 states and 306 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:52:52,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:52,873 INFO L93 Difference]: Finished difference Result 274 states and 314 transitions. [2022-11-16 12:52:52,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:52:52,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-11-16 12:52:52,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:52,876 INFO L225 Difference]: With dead ends: 274 [2022-11-16 12:52:52,876 INFO L226 Difference]: Without dead ends: 274 [2022-11-16 12:52:52,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:52:52,877 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 38 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:52,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 719 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 15 Unchecked, 0.2s Time] [2022-11-16 12:52:52,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-11-16 12:52:52,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 265. [2022-11-16 12:52:52,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 186 states have (on average 1.521505376344086) internal successors, (283), 246 states have internal predecessors, (283), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 12:52:52,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 304 transitions. [2022-11-16 12:52:52,887 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 304 transitions. Word has length 43 [2022-11-16 12:52:52,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:52,888 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 304 transitions. [2022-11-16 12:52:52,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:52:52,888 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 304 transitions. [2022-11-16 12:52:52,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-16 12:52:52,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:52,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:52,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:53,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:53,105 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:53,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:53,106 INFO L85 PathProgramCache]: Analyzing trace with hash -634310522, now seen corresponding path program 1 times [2022-11-16 12:52:53,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:53,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1224098662] [2022-11-16 12:52:53,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:53,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:53,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:53,107 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:53,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-16 12:52:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:53,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:52:53,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:53,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:53,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:53,315 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:53,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1224098662] [2022-11-16 12:52:53,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1224098662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:53,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:53,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:52:53,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128934306] [2022-11-16 12:52:53,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:53,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:52:53,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:53,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:52:53,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:52:53,317 INFO L87 Difference]: Start difference. First operand 265 states and 304 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:52:53,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:53,357 INFO L93 Difference]: Finished difference Result 289 states and 327 transitions. [2022-11-16 12:52:53,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:52:53,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-11-16 12:52:53,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:53,360 INFO L225 Difference]: With dead ends: 289 [2022-11-16 12:52:53,360 INFO L226 Difference]: Without dead ends: 289 [2022-11-16 12:52:53,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:52:53,361 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 48 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:53,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 567 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:52:53,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-16 12:52:53,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 267. [2022-11-16 12:52:53,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 188 states have (on average 1.5106382978723405) internal successors, (284), 248 states have internal predecessors, (284), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 12:52:53,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 305 transitions. [2022-11-16 12:52:53,376 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 305 transitions. Word has length 43 [2022-11-16 12:52:53,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:53,377 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 305 transitions. [2022-11-16 12:52:53,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:52:53,377 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 305 transitions. [2022-11-16 12:52:53,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 12:52:53,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:53,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:53,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:53,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:53,591 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:53,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:53,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1697258563, now seen corresponding path program 1 times [2022-11-16 12:52:53,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:53,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187095111] [2022-11-16 12:52:53,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:53,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:53,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:53,593 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:53,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-16 12:52:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:53,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:52:53,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:53,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:52:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:53,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:53,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:53,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187095111] [2022-11-16 12:52:53,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187095111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:53,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:53,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:52:53,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654752937] [2022-11-16 12:52:53,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:53,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:52:53,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:53,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:52:53,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:52:53,948 INFO L87 Difference]: Start difference. First operand 267 states and 305 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:52:55,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:55,228 INFO L93 Difference]: Finished difference Result 315 states and 346 transitions. [2022-11-16 12:52:55,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:52:55,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-11-16 12:52:55,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:55,231 INFO L225 Difference]: With dead ends: 315 [2022-11-16 12:52:55,231 INFO L226 Difference]: Without dead ends: 315 [2022-11-16 12:52:55,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:52:55,232 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 132 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:55,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 828 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 12:52:55,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-16 12:52:55,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 266. [2022-11-16 12:52:55,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 188 states have (on average 1.4946808510638299) internal successors, (281), 247 states have internal predecessors, (281), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 12:52:55,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 302 transitions. [2022-11-16 12:52:55,240 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 302 transitions. Word has length 44 [2022-11-16 12:52:55,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:55,240 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 302 transitions. [2022-11-16 12:52:55,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:52:55,241 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 302 transitions. [2022-11-16 12:52:55,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 12:52:55,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:55,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:55,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-11-16 12:52:55,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:55,455 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:55,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:55,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1697258562, now seen corresponding path program 1 times [2022-11-16 12:52:55,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:55,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508092942] [2022-11-16 12:52:55,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:55,456 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:55,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:55,457 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:55,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-16 12:52:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:55,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:52:55,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:55,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:52:55,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:55,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:55,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:55,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508092942] [2022-11-16 12:52:55,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508092942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:55,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:55,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:52:55,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384403453] [2022-11-16 12:52:55,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:55,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:52:55,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:55,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:52:55,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:52:55,976 INFO L87 Difference]: Start difference. First operand 266 states and 302 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:52:57,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:52:57,468 INFO L93 Difference]: Finished difference Result 339 states and 369 transitions. [2022-11-16 12:52:57,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:52:57,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-11-16 12:52:57,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:52:57,470 INFO L225 Difference]: With dead ends: 339 [2022-11-16 12:52:57,470 INFO L226 Difference]: Without dead ends: 339 [2022-11-16 12:52:57,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:52:57,471 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 146 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:52:57,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 852 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-16 12:52:57,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-11-16 12:52:57,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 266. [2022-11-16 12:52:57,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 188 states have (on average 1.4840425531914894) internal successors, (279), 247 states have internal predecessors, (279), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 12:52:57,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 300 transitions. [2022-11-16 12:52:57,479 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 300 transitions. Word has length 44 [2022-11-16 12:52:57,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:52:57,480 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 300 transitions. [2022-11-16 12:52:57,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:52:57,480 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 300 transitions. [2022-11-16 12:52:57,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 12:52:57,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:52:57,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:57,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:57,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:57,695 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:52:57,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:57,696 INFO L85 PathProgramCache]: Analyzing trace with hash 293864698, now seen corresponding path program 1 times [2022-11-16 12:52:57,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:52:57,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020596037] [2022-11-16 12:52:57,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:57,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:52:57,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:52:57,697 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:52:57,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-16 12:52:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:57,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-16 12:52:57,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:58,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:52:58,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:52:58,317 INFO L321 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-16 12:52:58,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 12:52:58,400 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 12:52:58,400 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 16 [2022-11-16 12:52:58,634 INFO L321 Elim1Store]: treesize reduction 92, result has 31.3 percent of original size [2022-11-16 12:52:58,634 INFO L350 Elim1Store]: Elim1 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 7 case distinctions, treesize of input 37 treesize of output 67 [2022-11-16 12:52:58,955 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 32 [2022-11-16 12:52:59,146 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 32 [2022-11-16 12:52:59,558 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 12:52:59,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 48 [2022-11-16 12:52:59,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 12:52:59,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:59,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:52:59,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:59,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020596037] [2022-11-16 12:52:59,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020596037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:59,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:59,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-16 12:52:59,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124716605] [2022-11-16 12:52:59,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:59,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:52:59,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:52:59,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:52:59,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:52:59,803 INFO L87 Difference]: Start difference. First operand 266 states and 300 transitions. Second operand has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:53:01,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:01,722 INFO L93 Difference]: Finished difference Result 303 states and 339 transitions. [2022-11-16 12:53:01,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:53:01,724 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-16 12:53:01,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:01,725 INFO L225 Difference]: With dead ends: 303 [2022-11-16 12:53:01,725 INFO L226 Difference]: Without dead ends: 303 [2022-11-16 12:53:01,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:53:01,726 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 129 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 343 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:01,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1353 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 715 Invalid, 0 Unknown, 343 Unchecked, 1.6s Time] [2022-11-16 12:53:01,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-11-16 12:53:01,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 275. [2022-11-16 12:53:01,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 195 states have (on average 1.4871794871794872) internal successors, (290), 255 states have internal predecessors, (290), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-16 12:53:01,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 314 transitions. [2022-11-16 12:53:01,737 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 314 transitions. Word has length 45 [2022-11-16 12:53:01,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:01,738 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 314 transitions. [2022-11-16 12:53:01,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:53:01,738 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 314 transitions. [2022-11-16 12:53:01,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 12:53:01,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:01,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:01,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-16 12:53:01,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:01,955 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:53:01,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:01,955 INFO L85 PathProgramCache]: Analyzing trace with hash 293864699, now seen corresponding path program 1 times [2022-11-16 12:53:01,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:53:01,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96643938] [2022-11-16 12:53:01,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:01,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:01,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:53:01,958 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:53:01,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-16 12:53:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:02,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-16 12:53:02,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:02,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:53:02,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:53:02,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:53:02,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:53:02,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:02,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:53:02,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:02,994 INFO L321 Elim1Store]: treesize reduction 48, result has 29.4 percent of original size [2022-11-16 12:53:02,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 47 [2022-11-16 12:53:03,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 12:53:03,134 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 12:53:03,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 12:53:03,387 INFO L321 Elim1Store]: treesize reduction 26, result has 33.3 percent of original size [2022-11-16 12:53:03,388 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 26 [2022-11-16 12:53:03,409 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:53:03,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:53:03,618 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 24 [2022-11-16 12:53:03,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:53:03,734 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 24 [2022-11-16 12:53:04,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:53:04,007 INFO L350 Elim1Store]: Elim1 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 17 treesize of output 9 [2022-11-16 12:53:04,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:04,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:53:04,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:53:04,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96643938] [2022-11-16 12:53:04,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96643938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:04,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:04,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:53:04,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119234077] [2022-11-16 12:53:04,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:04,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 12:53:04,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:53:04,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 12:53:04,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:53:04,180 INFO L87 Difference]: Start difference. First operand 275 states and 314 transitions. Second operand has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:53:07,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:07,822 INFO L93 Difference]: Finished difference Result 348 states and 383 transitions. [2022-11-16 12:53:07,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 12:53:07,824 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-16 12:53:07,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:07,825 INFO L225 Difference]: With dead ends: 348 [2022-11-16 12:53:07,826 INFO L226 Difference]: Without dead ends: 348 [2022-11-16 12:53:07,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=162, Invalid=1028, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 12:53:07,827 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 219 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 489 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:07,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 1724 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1085 Invalid, 0 Unknown, 489 Unchecked, 2.7s Time] [2022-11-16 12:53:07,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-11-16 12:53:07,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 294. [2022-11-16 12:53:07,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 211 states have (on average 1.5118483412322274) internal successors, (319), 272 states have internal predecessors, (319), 11 states have call successors, (11), 10 states have call predecessors, (11), 12 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-16 12:53:07,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 345 transitions. [2022-11-16 12:53:07,836 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 345 transitions. Word has length 45 [2022-11-16 12:53:07,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:07,837 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 345 transitions. [2022-11-16 12:53:07,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:53:07,837 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 345 transitions. [2022-11-16 12:53:07,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 12:53:07,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:07,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:07,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-16 12:53:08,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:08,054 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:53:08,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:08,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1063867589, now seen corresponding path program 1 times [2022-11-16 12:53:08,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:53:08,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559020755] [2022-11-16 12:53:08,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:08,055 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:08,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:53:08,056 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:53:08,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-16 12:53:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:08,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-16 12:53:08,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:08,651 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:53:08,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 37 [2022-11-16 12:53:09,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:53:09,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:53:09,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 12:53:09,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:53:09,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:09,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:09,665 INFO L321 Elim1Store]: treesize reduction 48, result has 29.4 percent of original size [2022-11-16 12:53:09,665 INFO L350 Elim1Store]: Elim1 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 35 treesize of output 57 [2022-11-16 12:53:09,831 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-16 12:53:09,832 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 22 [2022-11-16 12:53:10,145 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-16 12:53:10,145 INFO L350 Elim1Store]: Elim1 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 29 treesize of output 29 [2022-11-16 12:53:10,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:53:10,427 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 12:53:10,427 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 46 [2022-11-16 12:53:10,605 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 12:53:10,606 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 46 [2022-11-16 12:53:10,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:53:11,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:53:11,373 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:53:11,374 INFO L350 Elim1Store]: Elim1 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 54 treesize of output 25 [2022-11-16 12:53:11,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:11,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:53:11,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:53:11,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559020755] [2022-11-16 12:53:11,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559020755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:11,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:11,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-16 12:53:11,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094941185] [2022-11-16 12:53:11,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:11,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 12:53:11,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:53:11,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 12:53:11,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2022-11-16 12:53:11,522 INFO L87 Difference]: Start difference. First operand 294 states and 345 transitions. Second operand has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:53:16,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:16,125 INFO L93 Difference]: Finished difference Result 313 states and 355 transitions. [2022-11-16 12:53:16,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 12:53:16,127 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-16 12:53:16,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:16,129 INFO L225 Difference]: With dead ends: 313 [2022-11-16 12:53:16,129 INFO L226 Difference]: Without dead ends: 313 [2022-11-16 12:53:16,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=154, Invalid=1106, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 12:53:16,130 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 108 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 2582 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 434 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:16,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 2582 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1305 Invalid, 0 Unknown, 434 Unchecked, 3.4s Time] [2022-11-16 12:53:16,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-16 12:53:16,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 298. [2022-11-16 12:53:16,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 214 states have (on average 1.5093457943925233) internal successors, (323), 275 states have internal predecessors, (323), 12 states have call successors, (12), 10 states have call predecessors, (12), 12 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2022-11-16 12:53:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 351 transitions. [2022-11-16 12:53:16,138 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 351 transitions. Word has length 47 [2022-11-16 12:53:16,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:16,139 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 351 transitions. [2022-11-16 12:53:16,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:53:16,139 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 351 transitions. [2022-11-16 12:53:16,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 12:53:16,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:16,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:16,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-16 12:53:16,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:16,354 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:53:16,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:16,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1063867588, now seen corresponding path program 1 times [2022-11-16 12:53:16,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:53:16,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915781977] [2022-11-16 12:53:16,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:16,355 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:16,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:53:16,356 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:53:16,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-16 12:53:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:16,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-16 12:53:16,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:16,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:53:17,016 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:53:17,016 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-11-16 12:53:17,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:53:17,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:53:17,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:53:17,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:53:18,019 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 18 [2022-11-16 12:53:18,029 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-16 12:53:18,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:18,217 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:53:18,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:18,269 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-11-16 12:53:18,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 47 [2022-11-16 12:53:18,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 3 [2022-11-16 12:53:18,463 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 11 [2022-11-16 12:53:18,907 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-16 12:53:18,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-16 12:53:18,964 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-16 12:53:18,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-16 12:53:19,287 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 12:53:19,287 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 62 [2022-11-16 12:53:19,298 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 30 [2022-11-16 12:53:19,550 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 12:53:19,550 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 62 [2022-11-16 12:53:19,564 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 30 [2022-11-16 12:53:20,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:53:20,580 INFO L321 Elim1Store]: treesize reduction 31, result has 8.8 percent of original size [2022-11-16 12:53:20,581 INFO L350 Elim1Store]: Elim1 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 86 treesize of output 46 [2022-11-16 12:53:20,600 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:53:20,600 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:53:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:20,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:53:20,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:53:20,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915781977] [2022-11-16 12:53:20,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [915781977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:20,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:20,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:53:20,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224546140] [2022-11-16 12:53:20,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:20,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 12:53:20,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:53:20,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 12:53:20,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:53:20,800 INFO L87 Difference]: Start difference. First operand 298 states and 351 transitions. Second operand has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:53:24,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:24,474 INFO L93 Difference]: Finished difference Result 287 states and 329 transitions. [2022-11-16 12:53:24,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 12:53:24,475 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-16 12:53:24,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:24,477 INFO L225 Difference]: With dead ends: 287 [2022-11-16 12:53:24,477 INFO L226 Difference]: Without dead ends: 287 [2022-11-16 12:53:24,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=142, Invalid=1190, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 12:53:24,478 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 45 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 508 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:24,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1623 Invalid, 1524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 992 Invalid, 0 Unknown, 508 Unchecked, 2.6s Time] [2022-11-16 12:53:24,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-16 12:53:24,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 286. [2022-11-16 12:53:24,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 204 states have (on average 1.4901960784313726) internal successors, (304), 264 states have internal predecessors, (304), 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) [2022-11-16 12:53:24,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 329 transitions. [2022-11-16 12:53:24,486 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 329 transitions. Word has length 47 [2022-11-16 12:53:24,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:24,486 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 329 transitions. [2022-11-16 12:53:24,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:53:24,487 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 329 transitions. [2022-11-16 12:53:24,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 12:53:24,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:24,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:24,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-16 12:53:24,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:24,702 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:53:24,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:24,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1620254662, now seen corresponding path program 1 times [2022-11-16 12:53:24,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:53:24,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953841711] [2022-11-16 12:53:24,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:24,703 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:24,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:53:24,704 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:53:24,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-16 12:53:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:25,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-16 12:53:25,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:25,345 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:53:25,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:53:25,480 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 12:53:25,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 12:53:25,716 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-16 12:53:25,716 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 43 [2022-11-16 12:53:26,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:53:26,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 12:53:26,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:53:26,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:53:26,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:53:26,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:53:27,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:53:27,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:27,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:53:27,321 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:53:27,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953841711] [2022-11-16 12:53:27,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953841711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:27,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:27,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-16 12:53:27,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44084676] [2022-11-16 12:53:27,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:27,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:53:27,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:53:27,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:53:27,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:53:27,324 INFO L87 Difference]: Start difference. First operand 286 states and 329 transitions. Second operand has 19 states, 17 states have (on average 2.411764705882353) internal successors, (41), 16 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:53:28,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:28,192 INFO L93 Difference]: Finished difference Result 299 states and 344 transitions. [2022-11-16 12:53:28,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:53:28,193 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.411764705882353) internal successors, (41), 16 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 47 [2022-11-16 12:53:28,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:28,194 INFO L225 Difference]: With dead ends: 299 [2022-11-16 12:53:28,195 INFO L226 Difference]: Without dead ends: 299 [2022-11-16 12:53:28,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:53:28,195 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 75 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1097 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:28,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1522 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 385 Invalid, 0 Unknown, 1097 Unchecked, 0.6s Time] [2022-11-16 12:53:28,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-16 12:53:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 292. [2022-11-16 12:53:28,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 210 states have (on average 1.480952380952381) internal successors, (311), 270 states have internal predecessors, (311), 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) [2022-11-16 12:53:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 336 transitions. [2022-11-16 12:53:28,203 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 336 transitions. Word has length 47 [2022-11-16 12:53:28,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:28,204 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 336 transitions. [2022-11-16 12:53:28,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.411764705882353) internal successors, (41), 16 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:53:28,204 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 336 transitions. [2022-11-16 12:53:28,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 12:53:28,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:28,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:28,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-11-16 12:53:28,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:28,422 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:53:28,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:28,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1620254663, now seen corresponding path program 1 times [2022-11-16 12:53:28,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:53:28,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322283184] [2022-11-16 12:53:28,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:28,423 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:28,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:53:28,425 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:53:28,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-16 12:53:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:29,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-16 12:53:29,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:31,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:31,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:53:31,421 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 12:53:31,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 12:53:31,458 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:53:31,458 INFO L350 Elim1Store]: Elim1 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 18 [2022-11-16 12:53:31,745 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-16 12:53:31,746 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 22 [2022-11-16 12:53:31,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:53:32,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:53:32,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:53:32,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 12:53:32,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 12:53:32,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:53:32,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:53:32,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:53:32,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:53:32,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:53:32,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:53:32,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:53:32,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:53:33,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:53:33,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:53:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:33,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:53:33,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:53:33,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322283184] [2022-11-16 12:53:33,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322283184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:33,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:33,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 12:53:33,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208548624] [2022-11-16 12:53:33,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:33,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:53:33,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:53:33,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:53:33,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=333, Unknown=3, NotChecked=0, Total=380 [2022-11-16 12:53:33,309 INFO L87 Difference]: Start difference. First operand 292 states and 336 transitions. Second operand has 20 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:53:38,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:38,622 INFO L93 Difference]: Finished difference Result 441 states and 499 transitions. [2022-11-16 12:53:38,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 12:53:38,623 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 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 47 [2022-11-16 12:53:38,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:38,625 INFO L225 Difference]: With dead ends: 441 [2022-11-16 12:53:38,626 INFO L226 Difference]: Without dead ends: 441 [2022-11-16 12:53:38,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=99, Invalid=765, Unknown=6, NotChecked=0, Total=870 [2022-11-16 12:53:38,627 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 330 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 2389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1074 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:38,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 1698 Invalid, 2389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1277 Invalid, 0 Unknown, 1074 Unchecked, 2.6s Time] [2022-11-16 12:53:38,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-11-16 12:53:38,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 364. [2022-11-16 12:53:38,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 276 states have (on average 1.5036231884057971) internal successors, (415), 338 states have internal predecessors, (415), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19) [2022-11-16 12:53:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 448 transitions. [2022-11-16 12:53:38,637 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 448 transitions. Word has length 47 [2022-11-16 12:53:38,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:38,637 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 448 transitions. [2022-11-16 12:53:38,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:53:38,638 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 448 transitions. [2022-11-16 12:53:38,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-16 12:53:38,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:38,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:38,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-16 12:53:38,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:38,854 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:53:38,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:38,855 INFO L85 PathProgramCache]: Analyzing trace with hash -727934890, now seen corresponding path program 1 times [2022-11-16 12:53:38,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:53:38,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025147234] [2022-11-16 12:53:38,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:38,856 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:38,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:53:38,857 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:53:38,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-16 12:53:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:39,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:53:39,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:39,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:53:39,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:53:39,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025147234] [2022-11-16 12:53:39,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025147234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:39,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:39,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:53:39,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461016843] [2022-11-16 12:53:39,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:39,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:53:39,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:53:39,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:53:39,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:53:39,144 INFO L87 Difference]: Start difference. First operand 364 states and 448 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:53:39,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:39,175 INFO L93 Difference]: Finished difference Result 387 states and 471 transitions. [2022-11-16 12:53:39,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:53:39,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2022-11-16 12:53:39,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:39,178 INFO L225 Difference]: With dead ends: 387 [2022-11-16 12:53:39,178 INFO L226 Difference]: Without dead ends: 387 [2022-11-16 12:53:39,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:53:39,179 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 80 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:39,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 558 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:53:39,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-11-16 12:53:39,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 353. [2022-11-16 12:53:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 265 states have (on average 1.509433962264151) internal successors, (400), 327 states have internal predecessors, (400), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19) [2022-11-16 12:53:39,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 433 transitions. [2022-11-16 12:53:39,188 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 433 transitions. Word has length 49 [2022-11-16 12:53:39,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:39,189 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 433 transitions. [2022-11-16 12:53:39,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:53:39,189 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 433 transitions. [2022-11-16 12:53:39,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-16 12:53:39,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:39,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:39,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-16 12:53:39,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:39,403 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:53:39,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:39,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2130667900, now seen corresponding path program 1 times [2022-11-16 12:53:39,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:53:39,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492012291] [2022-11-16 12:53:39,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:39,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:39,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:53:39,405 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:53:39,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-16 12:53:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:39,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-16 12:53:39,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:40,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:53:40,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:53:40,382 INFO L321 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-16 12:53:40,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 12:53:40,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:40,503 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 12:53:40,504 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 16 [2022-11-16 12:53:40,761 INFO L321 Elim1Store]: treesize reduction 102, result has 29.2 percent of original size [2022-11-16 12:53:40,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 37 treesize of output 67 [2022-11-16 12:53:41,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:53:41,134 INFO L350 Elim1Store]: Elim1 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 51 treesize of output 34 [2022-11-16 12:53:41,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 73 [2022-11-16 12:53:41,541 INFO L350 Elim1Store]: Elim1 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 68 treesize of output 71 [2022-11-16 12:53:41,909 INFO L350 Elim1Store]: Elim1 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 46 treesize of output 44 [2022-11-16 12:53:41,950 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:53:41,950 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 53 treesize of output 58 [2022-11-16 12:53:41,968 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 16 [2022-11-16 12:53:42,150 INFO L350 Elim1Store]: Elim1 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 46 treesize of output 44 [2022-11-16 12:53:42,194 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:53:42,194 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 53 treesize of output 58 [2022-11-16 12:53:42,230 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 16 [2022-11-16 12:53:42,448 INFO L350 Elim1Store]: Elim1 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 46 treesize of output 44 [2022-11-16 12:53:42,484 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:53:42,484 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 53 treesize of output 58 [2022-11-16 12:53:42,493 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 16 [2022-11-16 12:53:42,723 INFO L350 Elim1Store]: Elim1 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 46 treesize of output 44 [2022-11-16 12:53:42,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:42,735 INFO L350 Elim1Store]: Elim1 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 53 treesize of output 54 [2022-11-16 12:53:43,359 INFO L350 Elim1Store]: Elim1 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 47 treesize of output 31 [2022-11-16 12:53:43,817 INFO L321 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2022-11-16 12:53:43,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 28 [2022-11-16 12:53:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:44,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:53:44,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:53:44,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492012291] [2022-11-16 12:53:44,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492012291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:44,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:44,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:53:44,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054284266] [2022-11-16 12:53:44,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:44,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:53:44,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:53:44,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:53:44,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:53:44,121 INFO L87 Difference]: Start difference. First operand 353 states and 433 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) [2022-11-16 12:53:45,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:45,539 INFO L93 Difference]: Finished difference Result 415 states and 499 transitions. [2022-11-16 12:53:45,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 12:53:45,543 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 [2022-11-16 12:53:45,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:45,545 INFO L225 Difference]: With dead ends: 415 [2022-11-16 12:53:45,545 INFO L226 Difference]: Without dead ends: 415 [2022-11-16 12:53:45,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=133, Invalid=1057, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 12:53:45,546 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 198 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1260 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:45,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1766 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 377 Invalid, 0 Unknown, 1260 Unchecked, 0.7s Time] [2022-11-16 12:53:45,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-11-16 12:53:45,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 353. [2022-11-16 12:53:45,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 265 states have (on average 1.5056603773584907) internal successors, (399), 327 states have internal predecessors, (399), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19) [2022-11-16 12:53:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 432 transitions. [2022-11-16 12:53:45,555 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 432 transitions. Word has length 50 [2022-11-16 12:53:45,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:45,555 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 432 transitions. [2022-11-16 12:53:45,556 INFO L496 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) [2022-11-16 12:53:45,556 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 432 transitions. [2022-11-16 12:53:45,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-16 12:53:45,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:45,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:45,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-11-16 12:53:45,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:45,774 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:53:45,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:45,774 INFO L85 PathProgramCache]: Analyzing trace with hash -2130667899, now seen corresponding path program 1 times [2022-11-16 12:53:45,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:53:45,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391595589] [2022-11-16 12:53:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:45,775 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:45,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:53:45,776 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:53:45,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-16 12:53:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:46,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 107 conjunts are in the unsatisfiable core [2022-11-16 12:53:46,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:46,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:53:46,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:53:47,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:53:47,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:53:47,439 INFO L321 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-16 12:53:47,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 12:53:47,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:53:47,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 12:53:47,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:47,671 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 12:53:47,672 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 16 [2022-11-16 12:53:47,963 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-11-16 12:53:47,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 35 [2022-11-16 12:53:48,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 18 [2022-11-16 12:53:48,466 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 18 [2022-11-16 12:53:48,493 INFO L350 Elim1Store]: Elim1 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 37 treesize of output 28 [2022-11-16 12:53:49,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-16 12:53:49,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:49,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:49,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:49,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:49,312 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 12:53:49,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 67 [2022-11-16 12:53:49,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:49,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:49,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:49,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:49,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:49,361 INFO L350 Elim1Store]: Elim1 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 57 [2022-11-16 12:53:50,184 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:53:50,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 12:53:50,213 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 14 [2022-11-16 12:53:50,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:50,265 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:53:50,265 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 12:53:50,302 INFO L350 Elim1Store]: Elim1 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 43 treesize of output 39 [2022-11-16 12:53:50,540 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:53:50,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 12:53:50,549 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 14 [2022-11-16 12:53:50,595 INFO L350 Elim1Store]: Elim1 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 43 treesize of output 39 [2022-11-16 12:53:50,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:50,656 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:53:50,657 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 12:53:50,958 INFO L350 Elim1Store]: Elim1 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 43 treesize of output 39 [2022-11-16 12:53:51,006 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:53:51,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 12:53:51,066 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:53:51,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 12:53:51,087 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 14 [2022-11-16 12:53:51,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:51,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:51,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-16 12:53:51,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:53:51,471 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 12:53:51,472 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 39 treesize of output 40 [2022-11-16 12:53:51,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 12:53:52,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 54 treesize of output 22 [2022-11-16 12:53:52,910 INFO L321 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-11-16 12:53:52,911 INFO L350 Elim1Store]: Elim1 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 55 treesize of output 37 [2022-11-16 12:53:52,929 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:53:52,930 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 16 [2022-11-16 12:53:53,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:53,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:53:53,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:53:53,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391595589] [2022-11-16 12:53:53,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391595589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:53,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:53,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-16 12:53:53,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77494595] [2022-11-16 12:53:53,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:53,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 12:53:53,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:53:53,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 12:53:53,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=737, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:53:53,205 INFO L87 Difference]: Start difference. First operand 353 states and 432 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) [2022-11-16 12:53:57,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:57,800 INFO L93 Difference]: Finished difference Result 470 states and 555 transitions. [2022-11-16 12:53:57,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 12:53:57,801 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 [2022-11-16 12:53:57,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:57,803 INFO L225 Difference]: With dead ends: 470 [2022-11-16 12:53:57,803 INFO L226 Difference]: Without dead ends: 470 [2022-11-16 12:53:57,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=157, Invalid=1565, Unknown=0, NotChecked=0, Total=1722 [2022-11-16 12:53:57,804 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 161 mSDsluCounter, 2897 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 2128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1040 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:57,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 3103 Invalid, 2128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1073 Invalid, 0 Unknown, 1040 Unchecked, 2.9s Time] [2022-11-16 12:53:57,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-11-16 12:53:57,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 378. [2022-11-16 12:53:57,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 290 states have (on average 1.4724137931034482) internal successors, (427), 352 states have internal predecessors, (427), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19) [2022-11-16 12:53:57,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 460 transitions. [2022-11-16 12:53:57,815 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 460 transitions. Word has length 50 [2022-11-16 12:53:57,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:57,816 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 460 transitions. [2022-11-16 12:53:57,816 INFO L496 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) [2022-11-16 12:53:57,816 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 460 transitions. [2022-11-16 12:53:57,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-16 12:53:57,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:57,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:57,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-16 12:53:58,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:58,036 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:53:58,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:58,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1565616984, now seen corresponding path program 1 times [2022-11-16 12:53:58,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:53:58,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753806732] [2022-11-16 12:53:58,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:58,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:58,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:53:58,038 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:53:58,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-16 12:53:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:58,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:53:58,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:58,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:58,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:53:58,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:53:58,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753806732] [2022-11-16 12:53:58,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753806732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:58,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:58,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:53:58,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508008537] [2022-11-16 12:53:58,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:58,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:53:58,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:53:58,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:53:58,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:53:58,332 INFO L87 Difference]: Start difference. First operand 378 states and 460 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) [2022-11-16 12:53:59,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:59,028 INFO L93 Difference]: Finished difference Result 411 states and 498 transitions. [2022-11-16 12:53:59,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:53:59,029 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 [2022-11-16 12:53:59,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:59,035 INFO L225 Difference]: With dead ends: 411 [2022-11-16 12:53:59,035 INFO L226 Difference]: Without dead ends: 411 [2022-11-16 12:53:59,037 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:53:59,038 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 44 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:59,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 522 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 12:53:59,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-11-16 12:53:59,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 403. [2022-11-16 12:53:59,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 312 states have (on average 1.4775641025641026) internal successors, (461), 373 states have internal predecessors, (461), 16 states have call successors, (16), 14 states have call predecessors, (16), 16 states have return successors, (21), 15 states have call predecessors, (21), 16 states have call successors, (21) [2022-11-16 12:53:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 498 transitions. [2022-11-16 12:53:59,054 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 498 transitions. Word has length 52 [2022-11-16 12:53:59,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:59,054 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 498 transitions. [2022-11-16 12:53:59,055 INFO L496 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) [2022-11-16 12:53:59,055 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 498 transitions. [2022-11-16 12:53:59,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-16 12:53:59,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:59,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:59,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-16 12:53:59,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:59,271 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:53:59,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:59,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1565616985, now seen corresponding path program 1 times [2022-11-16 12:53:59,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:53:59,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755024310] [2022-11-16 12:53:59,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:59,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:59,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:53:59,274 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:53:59,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-16 12:53:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:59,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-16 12:53:59,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:54:00,017 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:54:00,017 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-11-16 12:54:00,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:54:00,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:54:00,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:54:00,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:54:01,022 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 18 [2022-11-16 12:54:01,038 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-16 12:54:01,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:54:01,219 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-11-16 12:54:01,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 47 [2022-11-16 12:54:01,436 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 11 [2022-11-16 12:54:01,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:54:01,931 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-16 12:54:01,931 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 26 [2022-11-16 12:54:02,359 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 12:54:02,359 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 55 [2022-11-16 12:54:02,376 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 30 [2022-11-16 12:54:02,674 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 30 [2022-11-16 12:54:02,700 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 12:54:02,700 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 55 [2022-11-16 12:54:03,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:54:03,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:54:03,700 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:54:03,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 31 [2022-11-16 12:54:03,720 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:54:03,720 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:54:03,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:54:03,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:54:03,988 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:54:03,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755024310] [2022-11-16 12:54:03,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755024310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:54:03,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:54:03,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-16 12:54:03,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71340317] [2022-11-16 12:54:03,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:54:03,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 12:54:03,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:54:03,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 12:54:03,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:54:03,990 INFO L87 Difference]: Start difference. First operand 403 states and 498 transitions. Second operand has 28 states, 25 states have (on average 1.76) internal successors, (44), 21 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) [2022-11-16 12:54:11,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:54:11,420 INFO L93 Difference]: Finished difference Result 443 states and 528 transitions. [2022-11-16 12:54:11,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 12:54:11,420 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 1.76) internal successors, (44), 21 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 [2022-11-16 12:54:11,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:54:11,423 INFO L225 Difference]: With dead ends: 443 [2022-11-16 12:54:11,423 INFO L226 Difference]: Without dead ends: 443 [2022-11-16 12:54:11,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=194, Invalid=1698, Unknown=0, NotChecked=0, Total=1892 [2022-11-16 12:54:11,424 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 257 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 1896 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:54:11,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1904 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1896 Invalid, 0 Unknown, 212 Unchecked, 5.2s Time] [2022-11-16 12:54:11,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-16 12:54:11,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 392. [2022-11-16 12:54:11,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 303 states have (on average 1.4686468646864685) internal successors, (445), 364 states have internal predecessors, (445), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 14 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 12:54:11,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 480 transitions. [2022-11-16 12:54:11,436 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 480 transitions. Word has length 52 [2022-11-16 12:54:11,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:54:11,436 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 480 transitions. [2022-11-16 12:54:11,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 1.76) internal successors, (44), 21 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) [2022-11-16 12:54:11,437 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 480 transitions. [2022-11-16 12:54:11,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-16 12:54:11,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:54:11,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:54:11,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-16 12:54:11,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:11,653 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:54:11,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:54:11,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1996654393, now seen corresponding path program 1 times [2022-11-16 12:54:11,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:54:11,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719745403] [2022-11-16 12:54:11,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:54:11,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:11,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:54:11,655 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:54:11,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-16 12:54:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:54:12,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 92 conjunts are in the unsatisfiable core [2022-11-16 12:54:12,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:54:12,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:54:12,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:54:12,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:54:12,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:54:12,987 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-16 12:54:12,987 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:54:13,049 INFO L321 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-16 12:54:13,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 12:54:13,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:54:13,241 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 12:54:13,242 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 16 [2022-11-16 12:54:13,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 12:54:13,518 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-16 12:54:13,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-16 12:54:13,589 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-11-16 12:54:13,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 35 [2022-11-16 12:54:14,026 INFO L350 Elim1Store]: Elim1 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 37 treesize of output 28 [2022-11-16 12:54:14,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 12:54:14,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:54:14,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:54:14,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:54:14,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:54:14,477 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 12:54:14,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 57 [2022-11-16 12:54:14,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:54:14,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:54:14,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:54:14,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:54:14,513 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 12:54:14,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 67 [2022-11-16 12:54:14,882 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:54:14,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 12:54:14,929 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:54:14,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 12:54:14,961 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 14 [2022-11-16 12:54:15,132 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:54:15,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 12:54:15,188 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:54:15,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 12:54:15,215 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 14 [2022-11-16 12:54:15,451 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:54:15,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 12:54:15,521 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:54:15,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 12:54:15,548 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 14 [2022-11-16 12:54:15,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:54:15,758 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 12:54:15,758 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 39 treesize of output 40 [2022-11-16 12:54:15,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:54:15,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:54:15,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-16 12:54:16,573 INFO L321 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-11-16 12:54:16,573 INFO L350 Elim1Store]: Elim1 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 55 treesize of output 37 [2022-11-16 12:54:16,587 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:54:16,587 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 16 [2022-11-16 12:54:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:54:16,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:54:16,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:54:16,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719745403] [2022-11-16 12:54:16,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719745403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:54:16,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:54:16,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-16 12:54:16,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910037831] [2022-11-16 12:54:16,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:54:16,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:54:16,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:54:16,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:54:16,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:54:16,872 INFO L87 Difference]: Start difference. First operand 392 states and 480 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) [2022-11-16 12:54:20,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:54:20,955 INFO L93 Difference]: Finished difference Result 541 states and 620 transitions. [2022-11-16 12:54:20,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:54:20,956 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 [2022-11-16 12:54:20,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:54:20,957 INFO L225 Difference]: With dead ends: 541 [2022-11-16 12:54:20,957 INFO L226 Difference]: Without dead ends: 541 [2022-11-16 12:54:20,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=140, Invalid=1266, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 12:54:20,958 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 267 mSDsluCounter, 3400 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 3667 SdHoareTripleChecker+Invalid, 2361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1163 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:54:20,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 3667 Invalid, 2361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1179 Invalid, 0 Unknown, 1163 Unchecked, 3.0s Time] [2022-11-16 12:54:20,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-11-16 12:54:20,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 389. [2022-11-16 12:54:20,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 300 states have (on average 1.46) internal successors, (438), 361 states have internal predecessors, (438), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 14 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 12:54:20,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 473 transitions. [2022-11-16 12:54:20,967 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 473 transitions. Word has length 50 [2022-11-16 12:54:20,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:54:20,968 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 473 transitions. [2022-11-16 12:54:20,968 INFO L496 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) [2022-11-16 12:54:20,968 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 473 transitions. [2022-11-16 12:54:20,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-16 12:54:20,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:54:20,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:54:20,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-16 12:54:21,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:21,186 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:54:21,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:54:21,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1127553029, now seen corresponding path program 1 times [2022-11-16 12:54:21,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:54:21,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31231918] [2022-11-16 12:54:21,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:54:21,187 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:21,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:54:21,188 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:54:21,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-16 12:54:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:54:21,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:54:21,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:54:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:54:21,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:54:21,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:54:21,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31231918] [2022-11-16 12:54:21,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31231918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:54:21,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:54:21,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:54:21,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406092853] [2022-11-16 12:54:21,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:54:21,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:54:21,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:54:21,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:54:21,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:54:21,573 INFO L87 Difference]: Start difference. First operand 389 states and 473 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) [2022-11-16 12:54:21,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:54:21,939 INFO L93 Difference]: Finished difference Result 468 states and 568 transitions. [2022-11-16 12:54:21,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:54:21,940 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 [2022-11-16 12:54:21,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:54:21,942 INFO L225 Difference]: With dead ends: 468 [2022-11-16 12:54:21,942 INFO L226 Difference]: Without dead ends: 468 [2022-11-16 12:54:21,942 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:54:21,943 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 48 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:54:21,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 330 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:54:21,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-11-16 12:54:21,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 388. [2022-11-16 12:54:21,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 300 states have (on average 1.45) internal successors, (435), 360 states have internal predecessors, (435), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 14 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 12:54:21,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 470 transitions. [2022-11-16 12:54:21,952 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 470 transitions. Word has length 52 [2022-11-16 12:54:21,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:54:21,953 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 470 transitions. [2022-11-16 12:54:21,953 INFO L496 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) [2022-11-16 12:54:21,953 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 470 transitions. [2022-11-16 12:54:21,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-16 12:54:21,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:54:21,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:54:21,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-11-16 12:54:22,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:22,170 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:54:22,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:54:22,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1041751103, now seen corresponding path program 1 times [2022-11-16 12:54:22,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:54:22,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845024234] [2022-11-16 12:54:22,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:54:22,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:22,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:54:22,171 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:54:22,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-16 12:54:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:54:22,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-16 12:54:22,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:54:22,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:54:23,074 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 12:54:23,074 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:54:23,197 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 12:54:23,198 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:54:23,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:54:23,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:54:23,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:54:23,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:54:23,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845024234] [2022-11-16 12:54:23,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845024234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:54:23,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:54:23,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 12:54:23,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429193679] [2022-11-16 12:54:23,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:54:23,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:54:23,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:54:23,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:54:23,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:54:23,532 INFO L87 Difference]: Start difference. First operand 388 states and 470 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) [2022-11-16 12:54:25,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:54:25,590 INFO L93 Difference]: Finished difference Result 399 states and 479 transitions. [2022-11-16 12:54:25,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:54:25,591 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 [2022-11-16 12:54:25,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:54:25,593 INFO L225 Difference]: With dead ends: 399 [2022-11-16 12:54:25,593 INFO L226 Difference]: Without dead ends: 399 [2022-11-16 12:54:25,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=203, Invalid=853, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 12:54:25,594 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 382 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:54:25,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1218 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 12:54:25,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-11-16 12:54:25,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 390. [2022-11-16 12:54:25,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 303 states have (on average 1.438943894389439) internal successors, (436), 361 states have internal predecessors, (436), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 12:54:25,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 471 transitions. [2022-11-16 12:54:25,606 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 471 transitions. Word has length 54 [2022-11-16 12:54:25,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:54:25,606 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 471 transitions. [2022-11-16 12:54:25,607 INFO L496 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) [2022-11-16 12:54:25,607 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 471 transitions. [2022-11-16 12:54:25,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-16 12:54:25,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:54:25,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:54:25,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-16 12:54:25,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:25,824 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:54:25,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:54:25,825 INFO L85 PathProgramCache]: Analyzing trace with hash -2065453880, now seen corresponding path program 1 times [2022-11-16 12:54:25,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:54:25,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000373815] [2022-11-16 12:54:25,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:54:25,825 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:25,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:54:25,827 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:54:25,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-16 12:54:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:54:26,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 12:54:26,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:54:26,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:54:26,539 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 12:54:26,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 12:54:26,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-16 12:54:26,779 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:54:26,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:54:26,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:54:27,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:54:27,205 INFO L350 Elim1Store]: Elim1 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 7 treesize of output 3 [2022-11-16 12:54:27,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:54:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:54:27,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:54:27,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:54:27,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000373815] [2022-11-16 12:54:27,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000373815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:54:27,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:54:27,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 12:54:27,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112262009] [2022-11-16 12:54:27,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:54:27,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:54:27,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:54:27,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:54:27,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:54:27,349 INFO L87 Difference]: Start difference. First operand 390 states and 471 transitions. Second operand has 18 states, 16 states have (on average 2.9375) internal successors, (47), 14 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) [2022-11-16 12:54:30,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:54:30,899 INFO L93 Difference]: Finished difference Result 397 states and 476 transitions. [2022-11-16 12:54:30,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:54:30,899 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.9375) internal successors, (47), 14 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 [2022-11-16 12:54:30,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:54:30,902 INFO L225 Difference]: With dead ends: 397 [2022-11-16 12:54:30,902 INFO L226 Difference]: Without dead ends: 397 [2022-11-16 12:54:30,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=212, Invalid=844, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 12:54:30,902 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 457 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:54:30,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 1342 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 12:54:30,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-11-16 12:54:30,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 390. [2022-11-16 12:54:30,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 304 states have (on average 1.430921052631579) internal successors, (435), 361 states have internal predecessors, (435), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 12:54:30,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 470 transitions. [2022-11-16 12:54:30,912 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 470 transitions. Word has length 55 [2022-11-16 12:54:30,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:54:30,912 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 470 transitions. [2022-11-16 12:54:30,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.9375) internal successors, (47), 14 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) [2022-11-16 12:54:30,913 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 470 transitions. [2022-11-16 12:54:30,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-16 12:54:30,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:54:30,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:54:30,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-11-16 12:54:31,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:31,127 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:54:31,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:54:31,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1728414038, now seen corresponding path program 1 times [2022-11-16 12:54:31,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:54:31,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557991667] [2022-11-16 12:54:31,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:54:31,128 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:31,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:54:31,131 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:54:31,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-16 12:54:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:54:31,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:54:31,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:54:31,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:54:31,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:54:31,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:54:31,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557991667] [2022-11-16 12:54:31,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557991667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:54:31,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:54:31,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:54:31,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020419622] [2022-11-16 12:54:31,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:54:31,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:54:31,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:54:31,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:54:31,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:54:31,635 INFO L87 Difference]: Start difference. First operand 390 states and 470 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) [2022-11-16 12:54:31,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:54:31,742 INFO L93 Difference]: Finished difference Result 491 states and 580 transitions. [2022-11-16 12:54:31,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:54:31,743 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 [2022-11-16 12:54:31,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:54:31,745 INFO L225 Difference]: With dead ends: 491 [2022-11-16 12:54:31,745 INFO L226 Difference]: Without dead ends: 491 [2022-11-16 12:54:31,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:54:31,746 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 147 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:54:31,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 1017 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:54:31,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-16 12:54:31,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 402. [2022-11-16 12:54:31,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 316 states have (on average 1.4145569620253164) internal successors, (447), 373 states have internal predecessors, (447), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 12:54:31,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 482 transitions. [2022-11-16 12:54:31,757 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 482 transitions. Word has length 54 [2022-11-16 12:54:31,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:54:31,758 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 482 transitions. [2022-11-16 12:54:31,758 INFO L496 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) [2022-11-16 12:54:31,758 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 482 transitions. [2022-11-16 12:54:31,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 12:54:31,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:54:31,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:54:31,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-16 12:54:31,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:31,976 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:54:31,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:54:31,977 INFO L85 PathProgramCache]: Analyzing trace with hash 395439457, now seen corresponding path program 1 times [2022-11-16 12:54:31,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:54:31,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646674900] [2022-11-16 12:54:31,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:54:31,978 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:31,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:54:31,979 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:54:31,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-16 12:54:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:54:32,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:54:32,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:54:32,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 12:54:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:54:32,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:54:32,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:54:32,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646674900] [2022-11-16 12:54:32,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646674900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:54:32,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:54:32,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:54:32,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377013845] [2022-11-16 12:54:32,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:54:32,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:54:32,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:54:32,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:54:32,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:54:32,423 INFO L87 Difference]: Start difference. First operand 402 states and 482 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) [2022-11-16 12:54:33,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:54:33,678 INFO L93 Difference]: Finished difference Result 407 states and 487 transitions. [2022-11-16 12:54:33,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:54:33,679 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 [2022-11-16 12:54:33,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:54:33,681 INFO L225 Difference]: With dead ends: 407 [2022-11-16 12:54:33,681 INFO L226 Difference]: Without dead ends: 407 [2022-11-16 12:54:33,682 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:54:33,682 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 41 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:54:33,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 878 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 12:54:33,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-11-16 12:54:33,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 405. [2022-11-16 12:54:33,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 319 states have (on average 1.4169278996865204) internal successors, (452), 376 states have internal predecessors, (452), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 12:54:33,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 487 transitions. [2022-11-16 12:54:33,692 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 487 transitions. Word has length 56 [2022-11-16 12:54:33,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:54:33,693 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 487 transitions. [2022-11-16 12:54:33,693 INFO L496 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) [2022-11-16 12:54:33,693 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 487 transitions. [2022-11-16 12:54:33,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 12:54:33,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:54:33,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:54:33,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-16 12:54:33,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:33,910 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:54:33,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:54:33,911 INFO L85 PathProgramCache]: Analyzing trace with hash -221672310, now seen corresponding path program 1 times [2022-11-16 12:54:33,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:54:33,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263125377] [2022-11-16 12:54:33,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:54:33,911 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:33,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:54:33,913 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:54:33,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-16 12:54:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:54:34,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:54:34,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:54:34,562 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:54:34,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:54:34,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:54:34,663 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 20 [2022-11-16 12:54:34,795 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 12:54:34,796 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 20 [2022-11-16 12:54:35,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:54:35,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:54:35,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:54:35,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263125377] [2022-11-16 12:54:35,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263125377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:54:35,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:54:35,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:54:35,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420882866] [2022-11-16 12:54:35,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:54:35,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:54:35,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:54:35,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:54:35,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:54:35,068 INFO L87 Difference]: Start difference. First operand 405 states and 487 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:54:41,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:54:41,049 INFO L93 Difference]: Finished difference Result 444 states and 520 transitions. [2022-11-16 12:54:41,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:54:41,050 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2022-11-16 12:54:41,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:54:41,053 INFO L225 Difference]: With dead ends: 444 [2022-11-16 12:54:41,053 INFO L226 Difference]: Without dead ends: 444 [2022-11-16 12:54:41,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=69, Invalid=309, Unknown=2, NotChecked=0, Total=380 [2022-11-16 12:54:41,054 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 259 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 132 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:54:41,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 766 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 754 Invalid, 0 Unknown, 132 Unchecked, 1.7s Time] [2022-11-16 12:54:41,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-11-16 12:54:41,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 404. [2022-11-16 12:54:41,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 319 states have (on average 1.4075235109717867) internal successors, (449), 375 states have internal predecessors, (449), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 12:54:41,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 484 transitions. [2022-11-16 12:54:41,065 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 484 transitions. Word has length 58 [2022-11-16 12:54:41,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:54:41,065 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 484 transitions. [2022-11-16 12:54:41,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:54:41,066 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 484 transitions. [2022-11-16 12:54:41,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 12:54:41,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:54:41,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:54:41,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-16 12:54:41,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:41,275 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:54:41,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:54:41,275 INFO L85 PathProgramCache]: Analyzing trace with hash -221672309, now seen corresponding path program 1 times [2022-11-16 12:54:41,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:54:41,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068544514] [2022-11-16 12:54:41,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:54:41,276 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:41,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:54:41,279 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:54:41,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-16 12:54:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:54:41,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 12:54:41,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:54:44,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:54:44,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:54:44,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:54:44,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:54:44,354 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:54:44,355 INFO L350 Elim1Store]: Elim1 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 12 treesize of output 14 [2022-11-16 12:54:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:54:44,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:54:44,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:54:44,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068544514] [2022-11-16 12:54:44,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068544514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:54:44,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:54:44,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:54:44,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989800056] [2022-11-16 12:54:44,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:54:44,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:54:44,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:54:44,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:54:44,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=124, Unknown=3, NotChecked=0, Total=156 [2022-11-16 12:54:44,774 INFO L87 Difference]: Start difference. First operand 404 states and 484 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) [2022-11-16 12:54:51,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:54:51,375 INFO L93 Difference]: Finished difference Result 418 states and 496 transitions. [2022-11-16 12:54:51,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:54:51,375 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 [2022-11-16 12:54:51,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:54:51,378 INFO L225 Difference]: With dead ends: 418 [2022-11-16 12:54:51,378 INFO L226 Difference]: Without dead ends: 418 [2022-11-16 12:54:51,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=81, Invalid=374, Unknown=7, NotChecked=0, Total=462 [2022-11-16 12:54:51,379 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 474 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:54:51,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 479 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 854 Invalid, 0 Unknown, 187 Unchecked, 2.2s Time] [2022-11-16 12:54:51,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-11-16 12:54:51,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 403. [2022-11-16 12:54:51,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 319 states have (on average 1.3981191222570533) internal successors, (446), 374 states have internal predecessors, (446), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 12:54:51,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 481 transitions. [2022-11-16 12:54:51,391 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 481 transitions. Word has length 58 [2022-11-16 12:54:51,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:54:51,391 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 481 transitions. [2022-11-16 12:54:51,391 INFO L496 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) [2022-11-16 12:54:51,392 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 481 transitions. [2022-11-16 12:54:51,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-16 12:54:51,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:54:51,393 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:54:51,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-16 12:54:51,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:51,611 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:54:51,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:54:51,612 INFO L85 PathProgramCache]: Analyzing trace with hash -106046336, now seen corresponding path program 1 times [2022-11-16 12:54:51,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:54:51,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413120476] [2022-11-16 12:54:51,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:54:51,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:51,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:54:51,613 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:54:51,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-16 12:54:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:54:52,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:54:52,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:54:52,259 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_2682 (_ BitVec 1))) (= (store |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base| v_ArrVal_2682) |c_#valid|)) (= (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|) (_ bv0 1)))) is different from true [2022-11-16 12:54:52,313 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:54:52,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:54:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:54:52,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:54:52,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:54:52,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413120476] [2022-11-16 12:54:52,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413120476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:54:52,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:54:52,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:54:52,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704792140] [2022-11-16 12:54:52,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:54:52,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:54:52,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:54:52,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:54:52,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-16 12:54:52,326 INFO L87 Difference]: Start difference. First operand 403 states and 481 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) [2022-11-16 12:54:53,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:54:53,040 INFO L93 Difference]: Finished difference Result 481 states and 564 transitions. [2022-11-16 12:54:53,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:54:53,041 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 [2022-11-16 12:54:53,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:54:53,044 INFO L225 Difference]: With dead ends: 481 [2022-11-16 12:54:53,044 INFO L226 Difference]: Without dead ends: 481 [2022-11-16 12:54:53,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-16 12:54:53,045 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 105 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 218 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:54:53,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 332 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 208 Invalid, 0 Unknown, 218 Unchecked, 0.7s Time] [2022-11-16 12:54:53,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-11-16 12:54:53,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 402. [2022-11-16 12:54:53,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 319 states have (on average 1.3949843260188088) internal successors, (445), 373 states have internal predecessors, (445), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 12:54:53,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 480 transitions. [2022-11-16 12:54:53,058 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 480 transitions. Word has length 59 [2022-11-16 12:54:53,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:54:53,058 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 480 transitions. [2022-11-16 12:54:53,058 INFO L496 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) [2022-11-16 12:54:53,059 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 480 transitions. [2022-11-16 12:54:53,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-16 12:54:53,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:54:53,060 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:54:53,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-16 12:54:53,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:53,260 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:54:53,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:54:53,261 INFO L85 PathProgramCache]: Analyzing trace with hash -106046335, now seen corresponding path program 1 times [2022-11-16 12:54:53,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:54:53,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788090273] [2022-11-16 12:54:53,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:54:53,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:53,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:54:53,263 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:54:53,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-16 12:54:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:54:53,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:54:53,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:54:54,007 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_2792 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| v_ArrVal_2792))) (= (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|) (_ bv0 1)))) is different from true [2022-11-16 12:54:54,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:54:54,072 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:54:54,109 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:54:54,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:54:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:54:54,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:54:54,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:54:54,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788090273] [2022-11-16 12:54:54,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788090273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:54:54,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:54:54,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:54:54,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062718250] [2022-11-16 12:54:54,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:54:54,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:54:54,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:54:54,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:54:54,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2022-11-16 12:54:54,192 INFO L87 Difference]: Start difference. First operand 402 states and 480 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) [2022-11-16 12:54:55,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:54:55,992 INFO L93 Difference]: Finished difference Result 543 states and 632 transitions. [2022-11-16 12:54:55,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:54:55,993 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 [2022-11-16 12:54:55,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:54:55,995 INFO L225 Difference]: With dead ends: 543 [2022-11-16 12:54:55,995 INFO L226 Difference]: Without dead ends: 543 [2022-11-16 12:54:55,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2022-11-16 12:54:55,996 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 214 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 247 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:54:55,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 347 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 308 Invalid, 0 Unknown, 247 Unchecked, 1.8s Time] [2022-11-16 12:54:55,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-11-16 12:54:56,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 400. [2022-11-16 12:54:56,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 319 states have (on average 1.3855799373040751) internal successors, (442), 371 states have internal predecessors, (442), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 12:54:56,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 477 transitions. [2022-11-16 12:54:56,005 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 477 transitions. Word has length 59 [2022-11-16 12:54:56,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:54:56,006 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 477 transitions. [2022-11-16 12:54:56,006 INFO L496 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) [2022-11-16 12:54:56,006 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 477 transitions. [2022-11-16 12:54:56,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 12:54:56,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:54:56,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:54:56,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-16 12:54:56,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:56,223 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:54:56,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:54:56,224 INFO L85 PathProgramCache]: Analyzing trace with hash -122236954, now seen corresponding path program 1 times [2022-11-16 12:54:56,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:54:56,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844481596] [2022-11-16 12:54:56,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:54:56,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:54:56,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:54:56,225 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:54:56,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-16 12:54:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:54:56,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-16 12:54:56,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:54:57,125 INFO L350 Elim1Store]: Elim1 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 12 treesize of output 11 [2022-11-16 12:54:57,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:54:57,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:54:57,531 INFO L321 Elim1Store]: treesize reduction 15, result has 48.3 percent of original size [2022-11-16 12:54:57,531 INFO L350 Elim1Store]: Elim1 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 47 treesize of output 51 [2022-11-16 12:54:58,191 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:54:58,191 INFO L350 Elim1Store]: Elim1 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 73 treesize of output 67 [2022-11-16 12:54:58,422 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:54:58,423 INFO L350 Elim1Store]: Elim1 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 73 treesize of output 67 [2022-11-16 12:55:04,799 INFO L350 Elim1Store]: Elim1 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 77 treesize of output 53 [2022-11-16 12:55:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:55:07,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:55:07,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:55:07,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844481596] [2022-11-16 12:55:07,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844481596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:55:07,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:55:07,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:55:07,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621133846] [2022-11-16 12:55:07,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:55:07,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 12:55:07,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:55:07,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 12:55:07,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=362, Unknown=7, NotChecked=0, Total=420 [2022-11-16 12:55:07,403 INFO L87 Difference]: Start difference. First operand 400 states and 477 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) [2022-11-16 12:55:10,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:55:10,782 INFO L93 Difference]: Finished difference Result 405 states and 481 transitions. [2022-11-16 12:55:10,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:55:10,782 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 [2022-11-16 12:55:10,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:55:10,784 INFO L225 Difference]: With dead ends: 405 [2022-11-16 12:55:10,784 INFO L226 Difference]: Without dead ends: 377 [2022-11-16 12:55:10,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=80, Invalid=561, Unknown=9, NotChecked=0, Total=650 [2022-11-16 12:55:10,784 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 34 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 749 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:55:10,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1363 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 323 Invalid, 0 Unknown, 749 Unchecked, 0.9s Time] [2022-11-16 12:55:10,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-16 12:55:10,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-11-16 12:55:10,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 298 states have (on average 1.4060402684563758) internal successors, (419), 350 states have internal predecessors, (419), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) [2022-11-16 12:55:10,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 452 transitions. [2022-11-16 12:55:10,792 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 452 transitions. Word has length 60 [2022-11-16 12:55:10,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:55:10,793 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 452 transitions. [2022-11-16 12:55:10,793 INFO L496 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) [2022-11-16 12:55:10,793 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 452 transitions. [2022-11-16 12:55:10,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-16 12:55:10,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:55:10,794 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:55:10,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-16 12:55:11,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:55:11,011 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:55:11,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:55:11,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1397148172, now seen corresponding path program 1 times [2022-11-16 12:55:11,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:55:11,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113696898] [2022-11-16 12:55:11,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:55:11,012 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:55:11,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:55:11,013 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:55:11,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-16 12:55:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:55:11,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:55:11,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:55:12,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:55:12,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:55:12,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:55:12,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113696898] [2022-11-16 12:55:12,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113696898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:55:12,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:55:12,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:55:12,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074371939] [2022-11-16 12:55:12,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:55:12,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:55:12,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:55:12,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:55:12,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:55:12,306 INFO L87 Difference]: Start difference. First operand 377 states and 452 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) [2022-11-16 12:55:12,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:55:12,313 INFO L93 Difference]: Finished difference Result 382 states and 452 transitions. [2022-11-16 12:55:12,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:55:12,314 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 [2022-11-16 12:55:12,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:55:12,317 INFO L225 Difference]: With dead ends: 382 [2022-11-16 12:55:12,317 INFO L226 Difference]: Without dead ends: 382 [2022-11-16 12:55:12,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:55:12,317 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 64 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:55:12,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 629 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 46 Unchecked, 0.0s Time] [2022-11-16 12:55:12,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-16 12:55:12,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 377. [2022-11-16 12:55:12,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 298 states have (on average 1.3993288590604027) internal successors, (417), 350 states have internal predecessors, (417), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) [2022-11-16 12:55:12,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 450 transitions. [2022-11-16 12:55:12,324 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 450 transitions. Word has length 59 [2022-11-16 12:55:12,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:55:12,325 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 450 transitions. [2022-11-16 12:55:12,325 INFO L496 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) [2022-11-16 12:55:12,325 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 450 transitions. [2022-11-16 12:55:12,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 12:55:12,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:55:12,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:55:12,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-16 12:55:12,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:55:12,531 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:55:12,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:55:12,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1820164861, now seen corresponding path program 1 times [2022-11-16 12:55:12,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:55:12,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53688084] [2022-11-16 12:55:12,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:55:12,532 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:55:12,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:55:12,533 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:55:12,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-16 12:55:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:55:13,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-16 12:55:13,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:55:13,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:55:13,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:55:13,640 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-11-16 12:55:13,640 INFO L350 Elim1Store]: Elim1 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 35 [2022-11-16 12:55:13,733 INFO L350 Elim1Store]: Elim1 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 11 treesize of output 5 [2022-11-16 12:55:13,970 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-11-16 12:55:13,970 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 35 [2022-11-16 12:55:14,372 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:55:14,373 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 36 [2022-11-16 12:55:14,395 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 16 [2022-11-16 12:55:14,881 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:55:14,881 INFO L350 Elim1Store]: Elim1 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 55 treesize of output 57 [2022-11-16 12:55:14,941 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 16 [2022-11-16 12:55:15,607 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:55:15,608 INFO L350 Elim1Store]: Elim1 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 55 treesize of output 57 [2022-11-16 12:55:15,651 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 16 [2022-11-16 12:55:15,912 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:55:15,912 INFO L350 Elim1Store]: Elim1 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 55 treesize of output 57 [2022-11-16 12:55:15,997 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 16 [2022-11-16 12:55:16,282 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:55:16,282 INFO L350 Elim1Store]: Elim1 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 55 treesize of output 57 [2022-11-16 12:55:16,337 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 16 [2022-11-16 12:55:16,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:16,668 INFO L350 Elim1Store]: Elim1 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 55 treesize of output 53 [2022-11-16 12:55:19,129 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:55:19,129 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 65 [2022-11-16 12:55:19,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:55:19,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:55:19,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:55:19,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53688084] [2022-11-16 12:55:19,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53688084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:55:19,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:55:19,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-16 12:55:19,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861316796] [2022-11-16 12:55:19,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:55:19,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:55:19,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:55:19,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:55:19,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:55:19,586 INFO L87 Difference]: Start difference. First operand 377 states and 450 transitions. Second operand has 26 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:55:22,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:55:22,563 INFO L93 Difference]: Finished difference Result 467 states and 550 transitions. [2022-11-16 12:55:22,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 12:55:22,564 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 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 61 [2022-11-16 12:55:22,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:55:22,566 INFO L225 Difference]: With dead ends: 467 [2022-11-16 12:55:22,567 INFO L226 Difference]: Without dead ends: 467 [2022-11-16 12:55:22,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 32 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2022-11-16 12:55:22,567 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 229 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1354 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:55:22,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 2062 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 865 Invalid, 0 Unknown, 1354 Unchecked, 1.8s Time] [2022-11-16 12:55:22,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-11-16 12:55:22,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 385. [2022-11-16 12:55:22,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 305 states have (on average 1.4032786885245903) internal successors, (428), 357 states have internal predecessors, (428), 14 states have call successors, (14), 13 states have call predecessors, (14), 15 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) [2022-11-16 12:55:22,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 461 transitions. [2022-11-16 12:55:22,575 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 461 transitions. Word has length 61 [2022-11-16 12:55:22,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:55:22,576 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 461 transitions. [2022-11-16 12:55:22,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:55:22,576 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 461 transitions. [2022-11-16 12:55:22,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 12:55:22,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:55:22,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:55:22,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-16 12:55:22,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:55:22,791 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:55:22,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:55:22,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1820164862, now seen corresponding path program 1 times [2022-11-16 12:55:22,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:55:22,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530357277] [2022-11-16 12:55:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:55:22,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:55:22,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:55:22,793 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:55:22,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-16 12:55:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:55:23,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 92 conjunts are in the unsatisfiable core [2022-11-16 12:55:23,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:55:23,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:55:23,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:55:23,817 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 12:55:23,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 12:55:24,152 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-16 12:55:24,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:55:24,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:55:24,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 12:55:25,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:25,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:25,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:25,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:25,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 12:55:25,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-16 12:55:25,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:25,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:25,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:25,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:25,106 INFO L350 Elim1Store]: Elim1 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 57 [2022-11-16 12:55:25,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 12:55:25,711 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:55:25,711 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:55:25,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 12:55:25,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:55:25,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:55:25,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 12:55:25,966 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:55:25,966 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:55:25,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 12:55:26,318 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:55:26,318 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:55:26,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 12:55:26,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 12:55:26,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:55:26,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:55:26,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:26,741 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-16 12:55:26,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 12:55:27,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2022-11-16 12:55:29,189 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:55:29,190 INFO L350 Elim1Store]: Elim1 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 74 treesize of output 44 [2022-11-16 12:55:29,212 INFO L321 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2022-11-16 12:55:29,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 28 [2022-11-16 12:55:29,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:55:29,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:55:29,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:55:29,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530357277] [2022-11-16 12:55:29,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530357277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:55:29,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:55:29,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-11-16 12:55:29,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507760248] [2022-11-16 12:55:29,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:55:29,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 12:55:29,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:55:29,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 12:55:29,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=852, Unknown=0, NotChecked=0, Total=930 [2022-11-16 12:55:29,608 INFO L87 Difference]: Start difference. First operand 385 states and 461 transitions. Second operand has 31 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:55:33,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:55:33,173 INFO L93 Difference]: Finished difference Result 464 states and 544 transitions. [2022-11-16 12:55:33,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 12:55:33,174 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 4 states have call successors, (4), 3 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 61 [2022-11-16 12:55:33,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:55:33,176 INFO L225 Difference]: With dead ends: 464 [2022-11-16 12:55:33,176 INFO L226 Difference]: Without dead ends: 464 [2022-11-16 12:55:33,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=154, Invalid=1652, Unknown=0, NotChecked=0, Total=1806 [2022-11-16 12:55:33,177 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 151 mSDsluCounter, 3601 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 3798 SdHoareTripleChecker+Invalid, 1620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 884 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:55:33,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 3798 Invalid, 1620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 721 Invalid, 0 Unknown, 884 Unchecked, 2.0s Time] [2022-11-16 12:55:33,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-11-16 12:55:33,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 425. [2022-11-16 12:55:33,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 339 states have (on average 1.4188790560471976) internal successors, (481), 393 states have internal predecessors, (481), 18 states have call successors, (18), 15 states have call predecessors, (18), 17 states have return successors, (23), 16 states have call predecessors, (23), 18 states have call successors, (23) [2022-11-16 12:55:33,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 522 transitions. [2022-11-16 12:55:33,186 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 522 transitions. Word has length 61 [2022-11-16 12:55:33,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:55:33,186 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 522 transitions. [2022-11-16 12:55:33,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:55:33,186 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 522 transitions. [2022-11-16 12:55:33,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 12:55:33,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:55:33,188 INFO L195 NwaCegarLoop]: 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, 1, 1] [2022-11-16 12:55:33,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-11-16 12:55:33,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:55:33,399 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:55:33,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:55:33,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1168691489, now seen corresponding path program 1 times [2022-11-16 12:55:33,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:55:33,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734662093] [2022-11-16 12:55:33,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:55:33,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:55:33,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:55:33,401 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:55:33,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-16 12:55:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:55:33,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:55:33,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:55:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:55:33,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:55:33,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:55:33,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734662093] [2022-11-16 12:55:33,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734662093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:55:33,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:55:33,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:55:33,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223007538] [2022-11-16 12:55:33,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:55:33,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:55:33,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:55:33,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:55:33,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:55:33,878 INFO L87 Difference]: Start difference. First operand 425 states and 522 transitions. Second operand has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:55:34,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:55:34,696 INFO L93 Difference]: Finished difference Result 570 states and 678 transitions. [2022-11-16 12:55:34,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:55:34,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2022-11-16 12:55:34,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:55:34,699 INFO L225 Difference]: With dead ends: 570 [2022-11-16 12:55:34,699 INFO L226 Difference]: Without dead ends: 570 [2022-11-16 12:55:34,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:55:34,700 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 145 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:55:34,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 511 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 12:55:34,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-11-16 12:55:34,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 424. [2022-11-16 12:55:34,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 339 states have (on average 1.415929203539823) internal successors, (480), 392 states have internal predecessors, (480), 18 states have call successors, (18), 15 states have call predecessors, (18), 17 states have return successors, (23), 16 states have call predecessors, (23), 18 states have call successors, (23) [2022-11-16 12:55:34,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 521 transitions. [2022-11-16 12:55:34,709 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 521 transitions. Word has length 61 [2022-11-16 12:55:34,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:55:34,710 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 521 transitions. [2022-11-16 12:55:34,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:55:34,710 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 521 transitions. [2022-11-16 12:55:34,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 12:55:34,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:55:34,711 INFO L195 NwaCegarLoop]: 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, 1, 1] [2022-11-16 12:55:34,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-16 12:55:34,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:55:34,923 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:55:34,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:55:34,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1168691490, now seen corresponding path program 1 times [2022-11-16 12:55:34,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:55:34,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492184024] [2022-11-16 12:55:34,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:55:34,924 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:55:34,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:55:34,925 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:55:34,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-16 12:55:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:55:35,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-16 12:55:35,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:55:35,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:55:35,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:55:36,017 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 12:55:36,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 12:55:36,310 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-16 12:55:36,310 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 22 [2022-11-16 12:55:36,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:55:36,632 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 18 [2022-11-16 12:55:37,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-16 12:55:37,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:37,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:37,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:37,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:37,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 12:55:37,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:37,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:37,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:37,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:37,162 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 57 [2022-11-16 12:55:37,768 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:55:37,768 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 18 treesize of output 27 [2022-11-16 12:55:37,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 12:55:37,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 12:55:37,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:55:38,031 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:55:38,031 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 18 treesize of output 27 [2022-11-16 12:55:38,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 12:55:38,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:55:38,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 12:55:38,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 12:55:38,429 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:55:38,429 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 18 treesize of output 27 [2022-11-16 12:55:38,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 12:55:38,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:55:38,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:38,728 INFO L350 Elim1Store]: Elim1 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 18 treesize of output 23 [2022-11-16 12:55:38,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:55:38,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 12:55:39,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:55:39,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 54 treesize of output 22 [2022-11-16 12:55:39,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2022-11-16 12:55:40,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:55:40,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:55:40,741 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 23 [2022-11-16 12:55:43,719 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3480 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3479 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3478 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_fetch_item_~item#1.base| v_ArrVal_3479))) (select (select .cse2 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_fetch_item_~item#1.base| v_ArrVal_3480) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse2 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd .cse0 (_ bv12 32)) (bvadd (_ bv16 32) (bvmul (_ bv4 32) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_fetch_item_~item#1.base| v_ArrVal_3478) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|))) (concat (concat (concat (select .cse1 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32))) (select .cse1 (bvadd (_ bv6 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))) (select .cse1 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)))) (select .cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) .cse0)))) (forall ((v_ArrVal_3480 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3479 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_fetch_item_~item#1.base| v_ArrVal_3479))) (select (select .cse4 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_fetch_item_~item#1.base| v_ArrVal_3480) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse4 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd .cse3 (_ bv12 32)))))) is different from false [2022-11-16 12:55:43,972 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3480 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3479 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3479))) (select (select .cse1 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3480) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse1 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_3480 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3479 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3478 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse2 (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3479))) (select (select .cse4 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3480) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse4 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd .cse2 (_ bv12 32)) (bvadd (_ bv16 32) .cse2 (bvmul (_ bv4 32) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3478) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|))) (concat (concat (concat (select .cse3 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32))) (select .cse3 (bvadd (_ bv6 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))) (select .cse3 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)))) (select .cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)))))))))) is different from false [2022-11-16 12:55:44,139 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:55:44,140 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 360 treesize of output 289 [2022-11-16 12:55:44,168 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:55:44,169 INFO L350 Elim1Store]: Elim1 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 510 treesize of output 462 [2022-11-16 12:55:44,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 228 treesize of output 212 [2022-11-16 12:56:16,038 WARN L233 SmtUtils]: Spent 19.34s on a formula simplification. DAG size of input: 80 DAG size of output: 78 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:56:16,581 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|)) (.cse8 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|)) (.cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (.cse5 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32))) (.cse6 (bvadd (_ bv6 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (.cse7 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32))) (.cse0 (= |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|))) (and (or (not .cse0) (forall ((v_arrayElimCell_427 (_ BitVec 8)) (v_arrayElimCell_426 (_ BitVec 8)) (v_ArrVal_3479 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_429 (_ BitVec 8)) (v_arrayElimCell_428 (_ BitVec 8)) (v_ArrVal_3465 (_ BitVec 32)) (v_ArrVal_3466 (_ BitVec 32)) (v_ArrVal_3463 (_ BitVec 32)) (v_ArrVal_3480 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3464 (_ BitVec 32)) (v_ArrVal_3461 (_ BitVec 32)) (v_ArrVal_3462 (_ BitVec 32)) (v_ArrVal_3460 (_ BitVec 32)) (v_ArrVal_3459 (_ BitVec 32))) (let ((.cse1 (let ((.cse2 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse8 .cse4 v_ArrVal_3466) .cse5 v_ArrVal_3463) .cse6 v_ArrVal_3465) .cse7 v_ArrVal_3460)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3479))) (select (select .cse2 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse3 .cse4 v_ArrVal_3462) .cse5 v_ArrVal_3464) .cse6 v_ArrVal_3459) .cse7 v_ArrVal_3461)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3480) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse2 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd .cse1 (_ bv12 32)) (bvadd (_ bv16 32) (bvmul (_ bv4 32) (concat (concat (concat v_arrayElimCell_428 v_arrayElimCell_429) v_arrayElimCell_427) v_arrayElimCell_426)) .cse1))))) (forall ((v_ArrVal_3465 (_ BitVec 32)) (v_ArrVal_3466 (_ BitVec 32)) (v_ArrVal_3463 (_ BitVec 32)) (v_ArrVal_3480 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3464 (_ BitVec 32)) (v_ArrVal_3461 (_ BitVec 32)) (v_ArrVal_3479 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3462 (_ BitVec 32)) (v_ArrVal_3460 (_ BitVec 32)) (v_ArrVal_3459 (_ BitVec 32))) (let ((.cse9 (let ((.cse10 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse8 .cse4 v_ArrVal_3466) .cse5 v_ArrVal_3463) .cse6 v_ArrVal_3465) .cse7 v_ArrVal_3460)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3479))) (select (select .cse10 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse3 .cse4 v_ArrVal_3462) .cse5 v_ArrVal_3464) .cse6 v_ArrVal_3459) .cse7 v_ArrVal_3461)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3480) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse10 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd (_ bv8 32) .cse9) (bvadd .cse9 (_ bv12 32))))) (or (forall ((v_ArrVal_3465 (_ BitVec 32)) (v_ArrVal_3466 (_ BitVec 32)) (v_ArrVal_3463 (_ BitVec 32)) (v_ArrVal_3480 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3464 (_ BitVec 32)) (v_ArrVal_3479 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3461 (_ BitVec 32)) (v_ArrVal_3462 (_ BitVec 32)) (v_ArrVal_3460 (_ BitVec 32)) (v_ArrVal_3459 (_ BitVec 32))) (let ((.cse11 (let ((.cse12 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse8 .cse4 v_ArrVal_3466) .cse5 v_ArrVal_3463) .cse6 v_ArrVal_3465) .cse7 v_ArrVal_3460)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3479))) (select (select .cse12 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse3 .cse4 v_ArrVal_3462) .cse5 v_ArrVal_3464) .cse6 v_ArrVal_3459) .cse7 v_ArrVal_3461)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3480) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse12 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd .cse11 (_ bv12 32)) (bvadd (_ bv16 32) (bvmul (concat (concat (concat ((_ extract 31 24) |c_ULTIMATE.start_ldv_positive_#res#1|) ((_ extract 23 16) |c_ULTIMATE.start_ldv_positive_#res#1|)) ((_ extract 15 8) |c_ULTIMATE.start_ldv_positive_#res#1|)) ((_ extract 7 0) |c_ULTIMATE.start_ldv_positive_#res#1|)) (_ bv4 32)) .cse11)))) .cse0))) is different from false [2022-11-16 12:56:33,372 WARN L233 SmtUtils]: Spent 9.64s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:56:33,755 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:56:33,756 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 226 treesize of output 219 [2022-11-16 12:56:33,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:56:33,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 161 [2022-11-16 12:56:33,958 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:56:33,958 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 226 treesize of output 219 [2022-11-16 12:56:33,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:56:33,982 INFO L350 Elim1Store]: Elim1 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 169 treesize of output 165 [2022-11-16 12:56:33,995 INFO L350 Elim1Store]: Elim1 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 160 treesize of output 156 [2022-11-16 12:56:34,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:56:34,173 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 217 treesize of output 210 [2022-11-16 12:56:34,185 INFO L350 Elim1Store]: Elim1 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 324 treesize of output 312 [2022-11-16 12:56:34,225 INFO L350 Elim1Store]: Elim1 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 155 treesize of output 151 [2022-11-16 12:56:34,615 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse11 (= |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|))) (let ((.cse12 (not .cse11)) (.cse4 (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| |c_ULTIMATE.start_hid_open_report_~device#1.offset|)) (.cse5 (bvadd (_ bv4 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (.cse6 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32))) (.cse7 (bvadd (_ bv6 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (.cse8 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32)))) (and (forall ((v_ArrVal_3465 (_ BitVec 32)) (v_ArrVal_3466 (_ BitVec 32)) (v_ArrVal_3463 (_ BitVec 32)) (v_arrayElimCell_434 (_ BitVec 32)) (v_ArrVal_3479 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3460 (_ BitVec 32))) (let ((.cse1 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse4 .cse5 v_ArrVal_3466) .cse6 v_ArrVal_3463) .cse7 v_ArrVal_3465) .cse8 v_ArrVal_3460)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3479))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))) (or (let ((.cse0 (select (select .cse1 v_arrayElimCell_434) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32)))) (let ((.cse3 (select (select .cse1 |c_ULTIMATE.start_hid_open_report_~device#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd .cse3 (_ bv12 32)))))))) (or (forall ((v_ArrVal_3465 (_ BitVec 32)) (v_ArrVal_3466 (_ BitVec 32)) (v_ArrVal_3463 (_ BitVec 32)) (v_ArrVal_3479 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3460 (_ BitVec 32))) (let ((.cse9 (let ((.cse10 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse4 .cse5 v_ArrVal_3466) .cse6 v_ArrVal_3463) .cse7 v_ArrVal_3465) .cse8 v_ArrVal_3460)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3479))) (select (select .cse10 |c_ULTIMATE.start_hid_open_report_~device#1.base|) (select (select .cse10 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd (_ bv8 32) .cse9) (bvadd .cse9 (_ bv12 32))))) .cse11) (or .cse12 (forall ((v_ArrVal_3465 (_ BitVec 32)) (v_ArrVal_3466 (_ BitVec 32)) (v_ArrVal_3463 (_ BitVec 32)) (v_arrayElimCell_434 (_ BitVec 32)) (v_ArrVal_3479 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3460 (_ BitVec 32))) (let ((.cse13 (let ((.cse14 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse4 .cse5 v_ArrVal_3466) .cse6 v_ArrVal_3463) .cse7 v_ArrVal_3465) .cse8 v_ArrVal_3460)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3479))) (select (select .cse14 v_arrayElimCell_434) (select (select .cse14 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd (_ bv8 32) .cse13) (bvadd .cse13 (_ bv12 32)))))) (or .cse12 (forall ((v_ArrVal_3465 (_ BitVec 32)) (v_arrayElimCell_432 (_ BitVec 32)) (v_ArrVal_3466 (_ BitVec 32)) (v_ArrVal_3463 (_ BitVec 32)) (v_arrayElimCell_427 (_ BitVec 8)) (v_arrayElimCell_426 (_ BitVec 8)) (v_ArrVal_3479 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3460 (_ BitVec 32)) (v_arrayElimCell_429 (_ BitVec 8)) (v_arrayElimCell_428 (_ BitVec 8))) (let ((.cse15 (let ((.cse16 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse4 .cse5 v_ArrVal_3466) .cse6 v_ArrVal_3463) .cse7 v_ArrVal_3465) .cse8 v_ArrVal_3460)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3479))) (select (select .cse16 v_arrayElimCell_432) (select (select .cse16 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd .cse15 (_ bv12 32)) (bvadd .cse15 (_ bv16 32) (bvmul (_ bv4 32) (concat (concat (concat v_arrayElimCell_428 v_arrayElimCell_429) v_arrayElimCell_427) v_arrayElimCell_426))))))) (or (forall ((v_ArrVal_3465 (_ BitVec 32)) (v_ArrVal_3466 (_ BitVec 32)) (v_ArrVal_3463 (_ BitVec 32)) (v_ArrVal_3479 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3460 (_ BitVec 32))) (let ((.cse17 (let ((.cse18 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse4 .cse5 v_ArrVal_3466) .cse6 v_ArrVal_3463) .cse7 v_ArrVal_3465) .cse8 v_ArrVal_3460)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3479))) (select (select .cse18 |c_ULTIMATE.start_hid_open_report_~device#1.base|) (select (select .cse18 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd .cse17 (_ bv12 32)) (bvadd (_ bv16 32) (bvmul (_ bv4 32) (concat (concat (concat (_ bv0 8) (_ bv0 8)) (_ bv0 8)) (_ bv1 8))) .cse17)))) .cse11)))) is different from false [2022-11-16 12:56:49,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:56:49,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492184024] [2022-11-16 12:56:49,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492184024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:56:49,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [533886135] [2022-11-16 12:56:49,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:56:49,559 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:56:49,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:56:49,562 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:56:49,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2022-11-16 12:56:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:56:50,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-16 12:56:50,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:56:53,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:56:54,089 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:56:54,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:56:58,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:56:58,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:56:59,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:56:59,700 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:56:59,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:56:59,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:56:59,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 25 treesize of output 36 [2022-11-16 12:57:00,828 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 11 [2022-11-16 12:57:00,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 3 [2022-11-16 12:57:04,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:04,228 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 12:57:04,228 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 51 [2022-11-16 12:57:04,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:57:06,733 INFO L350 Elim1Store]: Elim1 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 63 treesize of output 42 [2022-11-16 12:57:06,855 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 18 [2022-11-16 12:57:08,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:08,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:08,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:08,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:08,289 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 12:57:08,290 INFO L350 Elim1Store]: Elim1 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 87 treesize of output 81 [2022-11-16 12:57:08,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:08,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:08,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:08,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:08,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:08,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2022-11-16 12:57:10,216 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-16 12:57:10,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 42 [2022-11-16 12:57:10,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:10,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:10,418 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 12:57:10,418 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 65 treesize of output 60 [2022-11-16 12:57:11,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:11,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:11,449 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 12:57:11,449 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 65 treesize of output 60 [2022-11-16 12:57:11,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:11,691 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 12:57:11,691 INFO L350 Elim1Store]: Elim1 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 34 [2022-11-16 12:57:11,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 12:57:13,251 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-16 12:57:13,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 42 [2022-11-16 12:57:13,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 12:57:13,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:13,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:13,490 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 12:57:13,490 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 65 treesize of output 60 [2022-11-16 12:57:14,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:14,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:14,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:14,770 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-16 12:57:14,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:14,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:14,811 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 12:57:14,811 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 65 treesize of output 60 [2022-11-16 12:57:20,350 INFO L321 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-11-16 12:57:20,351 INFO L350 Elim1Store]: Elim1 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 89 treesize of output 55 [2022-11-16 12:57:20,427 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:57:20,428 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 16 [2022-11-16 12:57:23,667 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#Ultimate.meminit_#ptr#1.base| (_ BitVec 32)) (v_ArrVal_3627 (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_zalloc_#Ultimate.meminit_#ptr#1.base|)) (= (store |c_old(#length)| |ldv_zalloc_#Ultimate.meminit_#ptr#1.base| v_ArrVal_3627) |c_#length|))) is different from true [2022-11-16 12:57:23,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:57:23,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-11-16 12:57:23,899 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2022-11-16 12:57:23,899 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 27 treesize of output 31 [2022-11-16 12:57:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-16 12:57:26,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:57:30,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [533886135] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:57:30,975 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:57:30,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 30] total 58 [2022-11-16 12:57:30,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688198843] [2022-11-16 12:57:30,976 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:57:30,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-16 12:57:30,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:57:30,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-16 12:57:30,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=4881, Unknown=15, NotChecked=720, Total=5852 [2022-11-16 12:57:30,978 INFO L87 Difference]: Start difference. First operand 424 states and 521 transitions. Second operand has 59 states, 54 states have (on average 1.962962962962963) internal successors, (106), 49 states have internal predecessors, (106), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 12:58:07,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:58:07,900 INFO L93 Difference]: Finished difference Result 556 states and 670 transitions. [2022-11-16 12:58:07,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 12:58:07,901 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 54 states have (on average 1.962962962962963) internal successors, (106), 49 states have internal predecessors, (106), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 61 [2022-11-16 12:58:07,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:58:07,902 INFO L225 Difference]: With dead ends: 556 [2022-11-16 12:58:07,902 INFO L226 Difference]: Without dead ends: 556 [2022-11-16 12:58:07,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 89 SyntacticMatches, 9 SemanticMatches, 101 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 2506 ImplicationChecksByTransitivity, 125.2s TimeCoverageRelationStatistics Valid=445, Invalid=9058, Unknown=23, NotChecked=980, Total=10506 [2022-11-16 12:58:07,905 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 319 mSDsluCounter, 4084 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 4222 SdHoareTripleChecker+Invalid, 5819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3546 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:58:07,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 4222 Invalid, 5819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2232 Invalid, 0 Unknown, 3546 Unchecked, 11.4s Time] [2022-11-16 12:58:07,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-11-16 12:58:07,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 434. [2022-11-16 12:58:07,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 347 states have (on average 1.4092219020172911) internal successors, (489), 400 states have internal predecessors, (489), 19 states have call successors, (19), 16 states have call predecessors, (19), 18 states have return successors, (24), 17 states have call predecessors, (24), 19 states have call successors, (24) [2022-11-16 12:58:07,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 532 transitions. [2022-11-16 12:58:07,915 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 532 transitions. Word has length 61 [2022-11-16 12:58:07,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:58:07,915 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 532 transitions. [2022-11-16 12:58:07,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 54 states have (on average 1.962962962962963) internal successors, (106), 49 states have internal predecessors, (106), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 12:58:07,916 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 532 transitions. [2022-11-16 12:58:07,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 12:58:07,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:58:07,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:58:07,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-16 12:58:08,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (51)] Ended with exit code 0 [2022-11-16 12:58:08,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 12:58:08,327 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:58:08,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:58:08,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1630796932, now seen corresponding path program 1 times [2022-11-16 12:58:08,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:58:08,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757229781] [2022-11-16 12:58:08,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:58:08,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:58:08,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:58:08,329 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:58:08,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-16 12:58:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:58:09,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-16 12:58:09,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:58:09,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:58:09,920 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 12:58:09,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 12:58:10,752 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-16 12:58:10,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:58:11,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 12:58:11,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:58:12,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:58:12,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:58:12,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:58:12,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:58:12,180 INFO L350 Elim1Store]: Elim1 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 57 [2022-11-16 12:58:12,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:58:12,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:58:12,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:58:12,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:58:12,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 12:58:12,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:58:12,987 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:58:12,987 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:58:13,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 12:58:13,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:58:13,428 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:58:13,428 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:58:13,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 12:58:13,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:58:14,004 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:58:14,005 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:58:14,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 12:58:14,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:58:14,407 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-16 12:58:14,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:58:18,653 INFO L321 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-11-16 12:58:18,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 31 [2022-11-16 12:58:18,666 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 23 [2022-11-16 12:58:19,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:58:19,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:58:19,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:58:19,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757229781] [2022-11-16 12:58:19,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757229781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:58:19,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:58:19,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:58:19,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181142737] [2022-11-16 12:58:19,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:58:19,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 12:58:19,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:58:19,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 12:58:19,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:58:19,594 INFO L87 Difference]: Start difference. First operand 434 states and 532 transitions. Second operand has 28 states, 24 states have (on average 2.25) internal successors, (54), 23 states have internal predecessors, (54), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:58:24,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:58:24,799 INFO L93 Difference]: Finished difference Result 517 states and 607 transitions. [2022-11-16 12:58:24,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 12:58:24,800 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 2.25) internal successors, (54), 23 states have internal predecessors, (54), 4 states have call successors, (4), 3 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 61 [2022-11-16 12:58:24,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:58:24,803 INFO L225 Difference]: With dead ends: 517 [2022-11-16 12:58:24,804 INFO L226 Difference]: Without dead ends: 517 [2022-11-16 12:58:24,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=130, Invalid=1276, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 12:58:24,805 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 182 mSDsluCounter, 4162 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 4411 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 904 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:58:24,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 4411 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 538 Invalid, 0 Unknown, 904 Unchecked, 2.9s Time] [2022-11-16 12:58:24,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-11-16 12:58:24,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 434. [2022-11-16 12:58:24,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 347 states have (on average 1.4063400576368876) internal successors, (488), 400 states have internal predecessors, (488), 19 states have call successors, (19), 16 states have call predecessors, (19), 18 states have return successors, (24), 17 states have call predecessors, (24), 19 states have call successors, (24) [2022-11-16 12:58:24,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 531 transitions. [2022-11-16 12:58:24,815 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 531 transitions. Word has length 61 [2022-11-16 12:58:24,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:58:24,816 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 531 transitions. [2022-11-16 12:58:24,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 2.25) internal successors, (54), 23 states have internal predecessors, (54), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:58:24,816 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 531 transitions. [2022-11-16 12:58:24,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 12:58:24,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:58:24,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:58:24,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-16 12:58:25,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:58:25,031 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:58:25,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:58:25,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1126741118, now seen corresponding path program 1 times [2022-11-16 12:58:25,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:58:25,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627162202] [2022-11-16 12:58:25,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:58:25,032 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:58:25,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:58:25,034 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:58:25,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-16 12:58:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:58:25,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-16 12:58:25,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:58:26,505 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:58:26,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 37 [2022-11-16 12:58:27,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:58:27,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:58:28,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:58:28,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 12:58:28,613 INFO L321 Elim1Store]: treesize reduction 92, result has 31.3 percent of original size [2022-11-16 12:58:28,614 INFO L350 Elim1Store]: Elim1 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 7 case distinctions, treesize of input 35 treesize of output 65 [2022-11-16 12:58:29,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:58:29,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:58:29,135 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-16 12:58:29,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27 [2022-11-16 12:58:30,393 INFO L321 Elim1Store]: treesize reduction 40, result has 42.0 percent of original size [2022-11-16 12:58:30,393 INFO L350 Elim1Store]: Elim1 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 6 case distinctions, treesize of input 36 treesize of output 50 [2022-11-16 12:58:33,848 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-16 12:58:33,849 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 44 [2022-11-16 12:58:33,995 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:58:34,969 INFO L350 Elim1Store]: Elim1 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 43 treesize of output 57 [2022-11-16 12:58:35,175 INFO L321 Elim1Store]: treesize reduction 184, result has 3.7 percent of original size [2022-11-16 12:58:35,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 13 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 83 [2022-11-16 12:58:36,279 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-16 12:58:36,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 61 treesize of output 66 [2022-11-16 12:58:36,304 INFO L350 Elim1Store]: Elim1 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 36 treesize of output 24 [2022-11-16 12:58:36,554 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:58:36,554 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:58:36,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 12:58:36,987 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:58:36,987 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:58:37,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 12:58:37,182 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-16 12:58:37,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 61 treesize of output 66 [2022-11-16 12:58:37,208 INFO L350 Elim1Store]: Elim1 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 36 treesize of output 24 [2022-11-16 12:58:37,910 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:58:37,911 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:58:37,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 12:58:38,122 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-16 12:58:38,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 61 treesize of output 66 [2022-11-16 12:58:38,146 INFO L350 Elim1Store]: Elim1 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 36 treesize of output 24 [2022-11-16 12:58:38,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:58:38,833 INFO L321 Elim1Store]: treesize reduction 31, result has 13.9 percent of original size [2022-11-16 12:58:38,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 62 [2022-11-16 12:58:38,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:58:38,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-16 12:58:43,724 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 144 treesize of output 95 [2022-11-16 12:58:45,035 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-16 12:58:45,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 39 [2022-11-16 12:58:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:58:45,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:58:45,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:58:45,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627162202] [2022-11-16 12:58:45,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627162202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:58:45,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:58:45,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-11-16 12:58:45,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550631371] [2022-11-16 12:58:45,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:58:45,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 12:58:45,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:58:45,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 12:58:45,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1040, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 12:58:45,650 INFO L87 Difference]: Start difference. First operand 434 states and 531 transitions. Second operand has 34 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 27 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:58:50,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:58:50,557 INFO L93 Difference]: Finished difference Result 458 states and 554 transitions. [2022-11-16 12:58:50,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 12:58:50,558 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 27 states have internal predecessors, (56), 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 63 [2022-11-16 12:58:50,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:58:50,562 INFO L225 Difference]: With dead ends: 458 [2022-11-16 12:58:50,562 INFO L226 Difference]: Without dead ends: 458 [2022-11-16 12:58:50,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=130, Invalid=1676, Unknown=0, NotChecked=0, Total=1806 [2022-11-16 12:58:50,563 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 63 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1009 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:58:50,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 3098 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 469 Invalid, 0 Unknown, 1009 Unchecked, 2.4s Time] [2022-11-16 12:58:50,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-11-16 12:58:50,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 434. [2022-11-16 12:58:50,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 347 states have (on average 1.4005763688760806) internal successors, (486), 400 states have internal predecessors, (486), 19 states have call successors, (19), 16 states have call predecessors, (19), 18 states have return successors, (24), 17 states have call predecessors, (24), 19 states have call successors, (24) [2022-11-16 12:58:50,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 529 transitions. [2022-11-16 12:58:50,572 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 529 transitions. Word has length 63 [2022-11-16 12:58:50,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:58:50,573 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 529 transitions. [2022-11-16 12:58:50,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 27 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:58:50,574 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 529 transitions. [2022-11-16 12:58:50,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 12:58:50,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:58:50,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:58:50,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-16 12:58:50,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:58:50,791 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:58:50,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:58:50,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1126741119, now seen corresponding path program 1 times [2022-11-16 12:58:50,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:58:50,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575255002] [2022-11-16 12:58:50,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:58:50,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:58:50,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:58:50,793 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:58:50,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-16 12:58:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:58:51,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 92 conjunts are in the unsatisfiable core [2022-11-16 12:58:51,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:58:52,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:58:52,388 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:58:52,388 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-11-16 12:58:53,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:58:53,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:58:53,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:58:53,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:58:54,287 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 18 [2022-11-16 12:58:54,339 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-16 12:58:54,715 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-16 12:58:54,716 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 26 [2022-11-16 12:58:54,949 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 12:58:54,950 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 51 [2022-11-16 12:58:55,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:58:55,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-16 12:58:55,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 12:58:56,862 INFO L321 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2022-11-16 12:58:56,862 INFO L350 Elim1Store]: Elim1 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 4 case distinctions, treesize of input 31 treesize of output 35 [2022-11-16 12:58:56,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:58:58,320 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 12:58:58,321 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 68 [2022-11-16 12:58:58,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-16 12:58:59,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-16 12:58:59,094 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 12:58:59,094 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 68 [2022-11-16 12:59:00,266 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 12:59:00,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 66 [2022-11-16 12:59:00,356 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:59:00,356 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 32 [2022-11-16 12:59:00,439 INFO L350 Elim1Store]: Elim1 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 46 treesize of output 32 [2022-11-16 12:59:00,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 12:59:00,951 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 12:59:00,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 66 [2022-11-16 12:59:01,042 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:59:01,042 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 32 [2022-11-16 12:59:01,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 12:59:01,159 INFO L350 Elim1Store]: Elim1 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 46 treesize of output 32 [2022-11-16 12:59:01,731 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 12:59:01,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 66 [2022-11-16 12:59:01,822 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:59:01,822 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 32 [2022-11-16 12:59:01,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 12:59:01,867 INFO L350 Elim1Store]: Elim1 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 46 treesize of output 32 [2022-11-16 12:59:02,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:59:02,440 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 12:59:02,440 INFO L350 Elim1Store]: Elim1 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 66 treesize of output 62 [2022-11-16 12:59:02,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:59:02,481 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-16 12:59:05,284 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:59:05,315 INFO L321 Elim1Store]: treesize reduction 31, result has 8.8 percent of original size [2022-11-16 12:59:05,316 INFO L350 Elim1Store]: Elim1 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 86 treesize of output 46 [2022-11-16 12:59:05,381 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:59:05,381 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:59:05,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:59:05,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:59:05,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:59:05,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575255002] [2022-11-16 12:59:05,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575255002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:59:05,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:59:05,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-16 12:59:05,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897771474] [2022-11-16 12:59:05,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:59:05,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 12:59:05,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:59:05,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 12:59:05,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:59:05,974 INFO L87 Difference]: Start difference. First operand 434 states and 529 transitions. Second operand has 29 states, 25 states have (on average 2.24) internal successors, (56), 21 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:59:12,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:59:12,833 INFO L93 Difference]: Finished difference Result 427 states and 510 transitions. [2022-11-16 12:59:12,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 12:59:12,833 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 2.24) internal successors, (56), 21 states have internal predecessors, (56), 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 63 [2022-11-16 12:59:12,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:59:12,835 INFO L225 Difference]: With dead ends: 427 [2022-11-16 12:59:12,835 INFO L226 Difference]: Without dead ends: 427 [2022-11-16 12:59:12,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=138, Invalid=1344, Unknown=0, NotChecked=0, Total=1482 [2022-11-16 12:59:12,836 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 35 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 770 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:59:12,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1890 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 732 Invalid, 0 Unknown, 770 Unchecked, 4.0s Time] [2022-11-16 12:59:12,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-11-16 12:59:12,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 406. [2022-11-16 12:59:12,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 322 states have (on average 1.391304347826087) internal successors, (448), 374 states have internal predecessors, (448), 17 states have call successors, (17), 15 states have call predecessors, (17), 17 states have return successors, (21), 16 states have call predecessors, (21), 17 states have call successors, (21) [2022-11-16 12:59:12,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 486 transitions. [2022-11-16 12:59:12,844 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 486 transitions. Word has length 63 [2022-11-16 12:59:12,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:59:12,845 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 486 transitions. [2022-11-16 12:59:12,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 2.24) internal successors, (56), 21 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:59:12,845 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 486 transitions. [2022-11-16 12:59:12,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-16 12:59:12,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:59:12,853 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1] [2022-11-16 12:59:12,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-16 12:59:13,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:59:13,073 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:59:13,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:59:13,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1483498212, now seen corresponding path program 1 times [2022-11-16 12:59:13,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:59:13,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23454329] [2022-11-16 12:59:13,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:59:13,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:59:13,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:59:13,076 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:59:13,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-16 12:59:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:59:13,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:59:13,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:59:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:59:13,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:59:13,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:59:13,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23454329] [2022-11-16 12:59:13,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23454329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:59:13,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:59:13,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:59:13,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894922531] [2022-11-16 12:59:13,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:59:13,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:59:13,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:59:13,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:59:13,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:59:13,771 INFO L87 Difference]: Start difference. First operand 406 states and 486 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:59:16,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:59:16,259 INFO L93 Difference]: Finished difference Result 551 states and 642 transitions. [2022-11-16 12:59:16,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:59:16,260 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 64 [2022-11-16 12:59:16,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:59:16,261 INFO L225 Difference]: With dead ends: 551 [2022-11-16 12:59:16,261 INFO L226 Difference]: Without dead ends: 551 [2022-11-16 12:59:16,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:59:16,262 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 169 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:59:16,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 826 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 12:59:16,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-11-16 12:59:16,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 405. [2022-11-16 12:59:16,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 322 states have (on average 1.3881987577639752) internal successors, (447), 373 states have internal predecessors, (447), 17 states have call successors, (17), 15 states have call predecessors, (17), 17 states have return successors, (21), 16 states have call predecessors, (21), 17 states have call successors, (21) [2022-11-16 12:59:16,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 485 transitions. [2022-11-16 12:59:16,268 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 485 transitions. Word has length 64 [2022-11-16 12:59:16,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:59:16,269 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 485 transitions. [2022-11-16 12:59:16,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:59:16,269 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 485 transitions. [2022-11-16 12:59:16,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-16 12:59:16,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:59:16,270 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1] [2022-11-16 12:59:16,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Ended with exit code 0 [2022-11-16 12:59:16,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:59:16,471 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:59:16,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:59:16,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1483498213, now seen corresponding path program 1 times [2022-11-16 12:59:16,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:59:16,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032030447] [2022-11-16 12:59:16,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:59:16,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:59:16,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:59:16,473 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:59:16,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-16 12:59:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:59:17,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:59:17,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:59:18,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:59:18,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:59:18,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:59:18,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032030447] [2022-11-16 12:59:18,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032030447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:59:18,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:59:18,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:59:18,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732538630] [2022-11-16 12:59:18,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:59:18,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:59:18,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:59:18,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:59:18,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:59:18,113 INFO L87 Difference]: Start difference. First operand 405 states and 485 transitions. Second operand has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:59:18,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:59:18,257 INFO L93 Difference]: Finished difference Result 521 states and 615 transitions. [2022-11-16 12:59:18,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:59:18,258 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2022-11-16 12:59:18,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:59:18,260 INFO L225 Difference]: With dead ends: 521 [2022-11-16 12:59:18,260 INFO L226 Difference]: Without dead ends: 521 [2022-11-16 12:59:18,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:59:18,260 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 76 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 255 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:59:18,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1023 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 255 Unchecked, 0.1s Time] [2022-11-16 12:59:18,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-11-16 12:59:18,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 404. [2022-11-16 12:59:18,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 322 states have (on average 1.3850931677018634) internal successors, (446), 372 states have internal predecessors, (446), 17 states have call successors, (17), 15 states have call predecessors, (17), 17 states have return successors, (21), 16 states have call predecessors, (21), 17 states have call successors, (21) [2022-11-16 12:59:18,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 484 transitions. [2022-11-16 12:59:18,271 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 484 transitions. Word has length 64 [2022-11-16 12:59:18,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:59:18,272 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 484 transitions. [2022-11-16 12:59:18,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:59:18,272 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 484 transitions. [2022-11-16 12:59:18,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:59:18,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:59:18,273 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1] [2022-11-16 12:59:18,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-16 12:59:18,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:59:18,487 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:59:18,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:59:18,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1256195651, now seen corresponding path program 1 times [2022-11-16 12:59:18,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:59:18,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096381838] [2022-11-16 12:59:18,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:59:18,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:59:18,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:59:18,489 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:59:18,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-16 12:59:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:59:19,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:59:19,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:59:19,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:59:19,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:59:19,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:59:19,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:59:19,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096381838] [2022-11-16 12:59:19,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096381838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:59:19,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:59:19,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:59:19,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846425857] [2022-11-16 12:59:19,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:59:19,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:59:19,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:59:19,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:59:19,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:59:19,436 INFO L87 Difference]: Start difference. First operand 404 states and 484 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:59:23,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:59:23,615 INFO L93 Difference]: Finished difference Result 530 states and 622 transitions. [2022-11-16 12:59:23,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:59:23,616 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 65 [2022-11-16 12:59:23,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:59:23,619 INFO L225 Difference]: With dead ends: 530 [2022-11-16 12:59:23,619 INFO L226 Difference]: Without dead ends: 530 [2022-11-16 12:59:23,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:59:23,620 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 152 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:59:23,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1288 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-16 12:59:23,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2022-11-16 12:59:23,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 402. [2022-11-16 12:59:23,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 322 states have (on average 1.3788819875776397) internal successors, (444), 370 states have internal predecessors, (444), 17 states have call successors, (17), 15 states have call predecessors, (17), 17 states have return successors, (21), 16 states have call predecessors, (21), 17 states have call successors, (21) [2022-11-16 12:59:23,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 482 transitions. [2022-11-16 12:59:23,628 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 482 transitions. Word has length 65 [2022-11-16 12:59:23,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:59:23,629 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 482 transitions. [2022-11-16 12:59:23,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:59:23,629 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 482 transitions. [2022-11-16 12:59:23,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:59:23,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:59:23,630 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1] [2022-11-16 12:59:23,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Ended with exit code 0 [2022-11-16 12:59:23,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:59:23,830 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:59:23,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:59:23,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1256195650, now seen corresponding path program 1 times [2022-11-16 12:59:23,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:59:23,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950554966] [2022-11-16 12:59:23,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:59:23,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:59:23,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:59:23,833 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:59:23,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-16 12:59:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:59:24,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:59:24,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:59:24,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:59:25,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:59:25,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:59:25,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:59:25,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950554966] [2022-11-16 12:59:25,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950554966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:59:25,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:59:25,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:59:25,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536456996] [2022-11-16 12:59:25,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:59:25,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:59:25,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:59:25,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:59:25,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:59:25,047 INFO L87 Difference]: Start difference. First operand 402 states and 482 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:59:29,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:59:29,994 INFO L93 Difference]: Finished difference Result 636 states and 741 transitions. [2022-11-16 12:59:29,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:59:29,996 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 65 [2022-11-16 12:59:29,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:59:29,997 INFO L225 Difference]: With dead ends: 636 [2022-11-16 12:59:29,997 INFO L226 Difference]: Without dead ends: 636 [2022-11-16 12:59:29,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:59:29,998 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 236 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:59:29,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 1675 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-16 12:59:29,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-11-16 12:59:30,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 400. [2022-11-16 12:59:30,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 322 states have (on average 1.3726708074534162) internal successors, (442), 368 states have internal predecessors, (442), 17 states have call successors, (17), 15 states have call predecessors, (17), 17 states have return successors, (21), 16 states have call predecessors, (21), 17 states have call successors, (21) [2022-11-16 12:59:30,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 480 transitions. [2022-11-16 12:59:30,005 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 480 transitions. Word has length 65 [2022-11-16 12:59:30,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:59:30,005 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 480 transitions. [2022-11-16 12:59:30,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:59:30,006 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 480 transitions. [2022-11-16 12:59:30,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:59:30,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:59:30,007 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1] [2022-11-16 12:59:30,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Ended with exit code 0 [2022-11-16 12:59:30,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:59:30,207 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:59:30,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:59:30,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1937034233, now seen corresponding path program 1 times [2022-11-16 12:59:30,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:59:30,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613871371] [2022-11-16 12:59:30,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:59:30,208 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:59:30,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:59:30,209 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:59:30,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-16 12:59:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:59:30,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:59:30,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:59:30,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:59:30,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:59:30,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:59:30,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613871371] [2022-11-16 12:59:30,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613871371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:59:30,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:59:30,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:59:30,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960655467] [2022-11-16 12:59:30,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:59:30,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:59:30,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:59:30,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:59:30,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:59:30,870 INFO L87 Difference]: Start difference. First operand 400 states and 480 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:59:31,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:59:31,075 INFO L93 Difference]: Finished difference Result 479 states and 566 transitions. [2022-11-16 12:59:31,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:59:31,076 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 65 [2022-11-16 12:59:31,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:59:31,078 INFO L225 Difference]: With dead ends: 479 [2022-11-16 12:59:31,078 INFO L226 Difference]: Without dead ends: 479 [2022-11-16 12:59:31,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:59:31,079 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 78 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:59:31,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1096 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:59:31,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-11-16 12:59:31,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 400. [2022-11-16 12:59:31,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 322 states have (on average 1.3664596273291925) internal successors, (440), 368 states have internal predecessors, (440), 17 states have call successors, (17), 15 states have call predecessors, (17), 17 states have return successors, (21), 16 states have call predecessors, (21), 17 states have call successors, (21) [2022-11-16 12:59:31,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 478 transitions. [2022-11-16 12:59:31,088 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 478 transitions. Word has length 65 [2022-11-16 12:59:31,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:59:31,089 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 478 transitions. [2022-11-16 12:59:31,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:59:31,089 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 478 transitions. [2022-11-16 12:59:31,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 12:59:31,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:59:31,090 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:59:31,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-11-16 12:59:31,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:59:31,308 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 12:59:31,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:59:31,308 INFO L85 PathProgramCache]: Analyzing trace with hash -318209280, now seen corresponding path program 1 times [2022-11-16 12:59:31,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:59:31,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71256252] [2022-11-16 12:59:31,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:59:31,309 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:59:31,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:59:31,310 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:59:31,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-16 12:59:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:59:32,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 111 conjunts are in the unsatisfiable core [2022-11-16 12:59:32,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:59:33,033 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:59:33,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 37 [2022-11-16 12:59:33,885 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 9 [2022-11-16 12:59:34,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:59:34,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 12:59:34,964 INFO L321 Elim1Store]: treesize reduction 92, result has 31.3 percent of original size [2022-11-16 12:59:34,965 INFO L350 Elim1Store]: Elim1 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 7 case distinctions, treesize of input 35 treesize of output 65 [2022-11-16 12:59:35,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:59:35,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:59:35,478 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-16 12:59:35,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27 [2022-11-16 12:59:36,645 INFO L321 Elim1Store]: treesize reduction 50, result has 36.7 percent of original size [2022-11-16 12:59:36,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 36 treesize of output 50 [2022-11-16 12:59:40,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 12:59:40,094 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-16 12:59:40,095 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 48 [2022-11-16 12:59:41,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:59:41,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:59:41,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:59:41,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:59:41,772 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 104 [2022-11-16 12:59:41,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:59:41,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:59:41,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:59:41,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:59:41,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:59:41,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:59:41,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:59:41,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:59:41,854 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-16 12:59:41,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 17 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 107 treesize of output 87 [2022-11-16 12:59:41,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-16 12:59:43,294 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 18 [2022-11-16 12:59:43,397 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:59:43,398 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 89 treesize of output 86 [2022-11-16 12:59:43,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 12:59:43,570 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-16 12:59:43,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 85 treesize of output 90 [2022-11-16 12:59:43,655 INFO L350 Elim1Store]: Elim1 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 60 treesize of output 24 [2022-11-16 12:59:44,045 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 18 [2022-11-16 12:59:44,147 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:59:44,147 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 89 treesize of output 86 [2022-11-16 12:59:44,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 12:59:44,359 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-16 12:59:44,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 85 treesize of output 90 [2022-11-16 12:59:44,473 INFO L350 Elim1Store]: Elim1 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 60 treesize of output 24 [2022-11-16 12:59:45,122 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:59:45,123 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 89 treesize of output 86 [2022-11-16 12:59:45,263 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-16 12:59:45,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 85 treesize of output 90 [2022-11-16 12:59:45,285 INFO L350 Elim1Store]: Elim1 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 60 treesize of output 24 [2022-11-16 12:59:45,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 12:59:45,465 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 18 [2022-11-16 12:59:45,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:59:45,951 INFO L350 Elim1Store]: Elim1 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 89 treesize of output 82 [2022-11-16 12:59:45,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:59:46,040 INFO L321 Elim1Store]: treesize reduction 31, result has 13.9 percent of original size [2022-11-16 12:59:46,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 86 [2022-11-16 12:59:46,078 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 18 [2022-11-16 12:59:48,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-16 12:59:48,878 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:59:48,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 63 [2022-11-16 12:59:51,404 INFO L321 Elim1Store]: treesize reduction 232, result has 9.7 percent of original size [2022-11-16 12:59:51,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 80 treesize of output 70 [2022-11-16 12:59:52,274 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:59:52,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 32 [2022-11-16 12:59:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:59:53,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:59:54,971 INFO L321 Elim1Store]: treesize reduction 7, result has 70.8 percent of original size [2022-11-16 12:59:54,972 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 29 [2022-11-16 12:59:55,535 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:59:55,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71256252] [2022-11-16 12:59:55,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71256252] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:59:55,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1126480240] [2022-11-16 12:59:55,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:59:55,536 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:59:55,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:59:55,537 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:59:55,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (61)] Waiting until timeout for monitored process [2022-11-16 12:59:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:59:57,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 107 conjunts are in the unsatisfiable core [2022-11-16 12:59:57,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:59:59,613 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:59:59,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 13:00:01,880 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 9 [2022-11-16 13:00:03,356 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 18 [2022-11-16 13:00:03,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 13:00:04,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:04,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:04,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 25 treesize of output 36 [2022-11-16 13:00:04,840 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 11 [2022-11-16 13:00:07,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:07,348 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 13:00:07,349 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 51 [2022-11-16 13:00:09,282 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 13:00:09,283 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 50 [2022-11-16 13:00:09,388 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 18 [2022-11-16 13:00:10,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:10,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:10,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:10,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:10,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:10,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:10,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:10,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:10,646 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 13:00:10,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 89 [2022-11-16 13:00:10,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:10,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:10,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:10,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:10,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:10,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2022-11-16 13:00:12,133 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-16 13:00:12,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 42 [2022-11-16 13:00:12,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 13:00:12,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:12,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:12,341 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-16 13:00:12,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 71 treesize of output 70 [2022-11-16 13:00:13,294 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-16 13:00:13,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 42 [2022-11-16 13:00:13,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:13,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:13,546 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-16 13:00:13,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 71 treesize of output 70 [2022-11-16 13:00:14,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:14,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:14,930 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-16 13:00:14,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 71 treesize of output 70 [2022-11-16 13:00:15,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:15,172 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 13:00:15,172 INFO L350 Elim1Store]: Elim1 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 34 [2022-11-16 13:00:15,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 13:00:16,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:16,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:16,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:16,190 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-16 13:00:16,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:16,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:16,306 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-16 13:00:16,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 71 treesize of output 70 [2022-11-16 13:00:20,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:20,616 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 13:00:20,616 INFO L350 Elim1Store]: Elim1 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 45 treesize of output 27 [2022-11-16 13:00:23,548 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 11 [2022-11-16 13:00:25,536 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-16 13:00:25,536 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 36 [2022-11-16 13:00:26,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:26,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:26,966 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-16 13:00:26,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 78 [2022-11-16 13:00:28,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:00:28,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 13:00:28,823 INFO L321 Elim1Store]: treesize reduction 22, result has 33.3 percent of original size [2022-11-16 13:00:28,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 51 [2022-11-16 13:00:31,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 13:00:31,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 13:00:41,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1126480240] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 13:00:41,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 13:00:41,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 32] total 67 [2022-11-16 13:00:41,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488437307] [2022-11-16 13:00:41,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 13:00:41,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-11-16 13:00:41,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 13:00:41,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-11-16 13:00:41,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=5594, Unknown=14, NotChecked=0, Total=5852 [2022-11-16 13:00:41,211 INFO L87 Difference]: Start difference. First operand 400 states and 478 transitions. Second operand has 69 states, 62 states have (on average 1.8709677419354838) internal successors, (116), 55 states have internal predecessors, (116), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 13:01:00,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 13:01:00,656 INFO L93 Difference]: Finished difference Result 425 states and 505 transitions. [2022-11-16 13:01:00,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 13:01:00,657 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 62 states have (on average 1.8709677419354838) internal successors, (116), 55 states have internal predecessors, (116), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 67 [2022-11-16 13:01:00,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 13:01:00,658 INFO L225 Difference]: With dead ends: 425 [2022-11-16 13:01:00,658 INFO L226 Difference]: Without dead ends: 425 [2022-11-16 13:01:00,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 77 SyntacticMatches, 9 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2629 ImplicationChecksByTransitivity, 61.1s TimeCoverageRelationStatistics Valid=438, Invalid=9636, Unknown=26, NotChecked=0, Total=10100 [2022-11-16 13:01:00,660 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 106 mSDsluCounter, 4542 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 4662 SdHoareTripleChecker+Invalid, 3380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2137 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-16 13:01:00,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 4662 Invalid, 3380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1216 Invalid, 0 Unknown, 2137 Unchecked, 6.1s Time] [2022-11-16 13:01:00,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-11-16 13:01:00,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 406. [2022-11-16 13:01:00,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 327 states have (on average 1.363914373088685) internal successors, (446), 373 states have internal predecessors, (446), 18 states have call successors, (18), 16 states have call predecessors, (18), 17 states have return successors, (22), 16 states have call predecessors, (22), 18 states have call successors, (22) [2022-11-16 13:01:00,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 486 transitions. [2022-11-16 13:01:00,671 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 486 transitions. Word has length 67 [2022-11-16 13:01:00,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 13:01:00,671 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 486 transitions. [2022-11-16 13:01:00,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 62 states have (on average 1.8709677419354838) internal successors, (116), 55 states have internal predecessors, (116), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 13:01:00,672 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 486 transitions. [2022-11-16 13:01:00,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 13:01:00,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 13:01:00,673 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 13:01:00,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-16 13:01:00,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (61)] Ended with exit code 0 [2022-11-16 13:01:01,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 13:01:01,095 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 13:01:01,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 13:01:01,096 INFO L85 PathProgramCache]: Analyzing trace with hash -318209279, now seen corresponding path program 1 times [2022-11-16 13:01:01,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 13:01:01,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52483960] [2022-11-16 13:01:01,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:01:01,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 13:01:01,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 13:01:01,098 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 13:01:01,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-16 13:01:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:01:02,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 135 conjunts are in the unsatisfiable core [2022-11-16 13:01:02,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:01:02,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 13:01:02,978 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 13:01:02,979 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-11-16 13:01:03,865 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 9 [2022-11-16 13:01:03,886 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 9 [2022-11-16 13:01:04,688 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 18 [2022-11-16 13:01:04,729 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-16 13:01:05,160 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 13:01:05,160 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 51 [2022-11-16 13:01:05,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 18 [2022-11-16 13:01:05,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:05,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-16 13:01:05,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 13:01:07,167 INFO L321 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2022-11-16 13:01:07,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2022-11-16 13:01:07,267 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 13:01:10,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-16 13:01:10,894 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-16 13:01:10,894 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 60 [2022-11-16 13:01:12,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:12,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:12,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:12,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:12,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:12,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:12,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:12,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:12,851 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 13:01:12,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 17 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 130 [2022-11-16 13:01:12,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:12,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:12,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:12,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:12,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:12,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:12,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:12,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:12,922 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-16 13:01:12,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 17 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 135 treesize of output 99 [2022-11-16 13:01:13,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-16 13:01:14,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 13:01:15,112 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-16 13:01:15,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 117 treesize of output 116 [2022-11-16 13:01:15,254 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-16 13:01:15,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 113 treesize of output 114 [2022-11-16 13:01:15,379 INFO L350 Elim1Store]: Elim1 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 84 treesize of output 36 [2022-11-16 13:01:15,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 13:01:16,070 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-16 13:01:16,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 117 treesize of output 116 [2022-11-16 13:01:16,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 13:01:16,254 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-16 13:01:16,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 113 treesize of output 114 [2022-11-16 13:01:16,290 INFO L350 Elim1Store]: Elim1 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 84 treesize of output 36 [2022-11-16 13:01:16,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 13:01:17,313 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-16 13:01:17,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 117 treesize of output 116 [2022-11-16 13:01:17,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 13:01:17,486 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-16 13:01:17,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 113 treesize of output 114 [2022-11-16 13:01:17,610 INFO L350 Elim1Store]: Elim1 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 84 treesize of output 36 [2022-11-16 13:01:17,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 13:01:18,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:18,506 INFO L321 Elim1Store]: treesize reduction 31, result has 13.9 percent of original size [2022-11-16 13:01:18,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 112 [2022-11-16 13:01:18,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:18,598 INFO L321 Elim1Store]: treesize reduction 31, result has 13.9 percent of original size [2022-11-16 13:01:18,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 110 [2022-11-16 13:01:18,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 13:01:21,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 54 treesize of output 22 [2022-11-16 13:01:24,014 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 5 [2022-11-16 13:01:24,027 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 3 [2022-11-16 13:01:24,633 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_hid_parser_main_~parser#1.base| (_ BitVec 32))) (let ((.cse1 (select (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_hid_parser_main_~parser#1.base|) (_ bv0 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| (_ bv1 32)) .cse1))) (and (= (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| .cse0) (_ bv8 32))) (not (= |ULTIMATE.start_hid_parser_main_~parser#1.base| .cse0)) (not (= .cse0 (_ bv0 32))) (= (_ bv1 32) (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_hid_parser_main_~parser#1.base|) (_ bv0 32))) (not (= .cse0 (_ bv1 32))) (not (= |ULTIMATE.start_hid_parser_main_~parser#1.base| (_ bv1 32))) (= (select (select |c_#memory_$Pointer$.offset| (_ bv1 32)) .cse1) (_ bv0 32)) (= (select (select |c_#memory_$Pointer$.base| .cse0) (_ bv8 32)) .cse0))))) (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32)) (v_ArrVal_5137 (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| v_ArrVal_5137) |c_#length|) (= (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|) (_ bv0 1))))) is different from true [2022-11-16 13:01:24,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:24,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 22 [2022-11-16 13:01:25,039 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 13:01:25,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 13:01:26,113 INFO L321 Elim1Store]: treesize reduction 231, result has 11.2 percent of original size [2022-11-16 13:01:26,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 151 treesize of output 125 [2022-11-16 13:01:26,338 INFO L321 Elim1Store]: treesize reduction 272, result has 9.6 percent of original size [2022-11-16 13:01:26,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 162 treesize of output 108 [2022-11-16 13:01:27,471 INFO L321 Elim1Store]: treesize reduction 66, result has 4.3 percent of original size [2022-11-16 13:01:27,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 204 treesize of output 84 [2022-11-16 13:01:27,521 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 13:01:27,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 21 [2022-11-16 13:01:28,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-16 13:01:28,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 13:01:40,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 13:01:40,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52483960] [2022-11-16 13:01:40,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52483960] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 13:01:40,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1132462696] [2022-11-16 13:01:40,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:01:40,831 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 13:01:40,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 13:01:40,832 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 13:01:40,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2022-11-16 13:01:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:01:43,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 128 conjunts are in the unsatisfiable core [2022-11-16 13:01:43,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:01:44,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 13:01:45,496 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 13:01:45,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 13:01:47,972 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 9 [2022-11-16 13:01:47,991 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 9 [2022-11-16 13:01:49,809 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 18 [2022-11-16 13:01:49,865 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-16 13:01:50,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:50,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:50,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 25 treesize of output 36 [2022-11-16 13:01:50,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:50,742 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 13:01:51,600 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 11 [2022-11-16 13:01:51,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 3 [2022-11-16 13:01:54,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:54,615 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 13:01:54,615 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 51 [2022-11-16 13:01:54,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 13:01:56,969 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 13:01:56,970 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 62 [2022-11-16 13:01:57,048 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-16 13:01:58,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:58,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:58,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:58,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:58,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:58,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 14 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 71 [2022-11-16 13:01:58,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:58,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:58,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:58,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:58,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:58,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:58,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:58,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:01:58,882 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 13:01:58,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 101 [2022-11-16 13:02:00,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:00,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:00,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:00,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:00,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 40 [2022-11-16 13:02:00,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:00,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:00,600 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-16 13:02:00,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 91 treesize of output 86 [2022-11-16 13:02:00,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:00,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:00,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:00,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:00,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 40 [2022-11-16 13:02:00,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:00,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:00,957 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-16 13:02:00,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 91 treesize of output 86 [2022-11-16 13:02:01,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:01,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:01,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:01,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:01,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 40 [2022-11-16 13:02:01,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:01,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:01,431 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-16 13:02:01,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 91 treesize of output 86 [2022-11-16 13:02:01,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:01,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:01,916 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-16 13:02:01,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 91 treesize of output 86 [2022-11-16 13:02:01,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:01,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:02,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:02,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:02,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 40 [2022-11-16 13:02:10,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 3 [2022-11-16 13:02:10,567 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 11 [2022-11-16 13:02:15,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:15,139 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 13:02:15,236 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-16 13:02:15,236 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 26 [2022-11-16 13:02:17,160 INFO L321 Elim1Store]: treesize reduction 172, result has 16.1 percent of original size [2022-11-16 13:02:17,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 120 treesize of output 98 [2022-11-16 13:02:17,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:17,507 INFO L321 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2022-11-16 13:02:17,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 64 treesize of output 67 [2022-11-16 13:02:19,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:19,800 INFO L321 Elim1Store]: treesize reduction 60, result has 10.4 percent of original size [2022-11-16 13:02:19,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 73 treesize of output 47 [2022-11-16 13:02:19,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:02:19,834 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 13:02:19,901 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-16 13:02:19,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 40 [2022-11-16 13:02:22,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 13:02:22,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 13:02:30,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1132462696] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 13:02:30,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 13:02:30,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 35] total 73 [2022-11-16 13:02:30,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95153922] [2022-11-16 13:02:30,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 13:02:30,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-11-16 13:02:30,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 13:02:30,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-11-16 13:02:30,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=6227, Unknown=7, NotChecked=158, Total=6642 [2022-11-16 13:02:30,665 INFO L87 Difference]: Start difference. First operand 406 states and 486 transitions. Second operand has 75 states, 68 states have (on average 1.7058823529411764) internal successors, (116), 58 states have internal predecessors, (116), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 13:02:57,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 13:02:57,307 INFO L93 Difference]: Finished difference Result 431 states and 511 transitions. [2022-11-16 13:02:57,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-16 13:02:57,308 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 68 states have (on average 1.7058823529411764) internal successors, (116), 58 states have internal predecessors, (116), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 67 [2022-11-16 13:02:57,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 13:02:57,310 INFO L225 Difference]: With dead ends: 431 [2022-11-16 13:02:57,310 INFO L226 Difference]: Without dead ends: 431 [2022-11-16 13:02:57,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 74 SyntacticMatches, 9 SemanticMatches, 107 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3148 ImplicationChecksByTransitivity, 81.9s TimeCoverageRelationStatistics Valid=451, Invalid=11101, Unknown=8, NotChecked=212, Total=11772 [2022-11-16 13:02:57,312 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 110 mSDsluCounter, 3926 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 4046 SdHoareTripleChecker+Invalid, 3911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2702 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-16 13:02:57,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 4046 Invalid, 3911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1183 Invalid, 0 Unknown, 2702 Unchecked, 6.2s Time] [2022-11-16 13:02:57,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-11-16 13:02:57,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 406. [2022-11-16 13:02:57,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 327 states have (on average 1.3608562691131498) internal successors, (445), 373 states have internal predecessors, (445), 18 states have call successors, (18), 16 states have call predecessors, (18), 17 states have return successors, (22), 16 states have call predecessors, (22), 18 states have call successors, (22) [2022-11-16 13:02:57,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 485 transitions. [2022-11-16 13:02:57,320 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 485 transitions. Word has length 67 [2022-11-16 13:02:57,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 13:02:57,321 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 485 transitions. [2022-11-16 13:02:57,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 68 states have (on average 1.7058823529411764) internal successors, (116), 58 states have internal predecessors, (116), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 13:02:57,321 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 485 transitions. [2022-11-16 13:02:57,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 13:02:57,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 13:02:57,322 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1] [2022-11-16 13:02:57,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-16 13:02:57,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (63)] Forceful destruction successful, exit code 0 [2022-11-16 13:02:57,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 13:02:57,746 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 13:02:57,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 13:02:57,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1356269198, now seen corresponding path program 1 times [2022-11-16 13:02:57,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 13:02:57,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835974838] [2022-11-16 13:02:57,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:02:57,747 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 13:02:57,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 13:02:57,748 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 13:02:57,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-16 13:02:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:02:58,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 13:02:58,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:02:59,006 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 13:02:59,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 13:02:59,416 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 13:02:59,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-16 13:03:00,058 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 13:03:00,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 13:03:02,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:02,366 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 13:03:02,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 31 [2022-11-16 13:03:02,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 13:03:02,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 13:03:10,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 13:03:10,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835974838] [2022-11-16 13:03:10,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835974838] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 13:03:10,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [445516859] [2022-11-16 13:03:10,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:03:10,191 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 13:03:10,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 13:03:10,193 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 13:03:10,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (65)] Waiting until timeout for monitored process [2022-11-16 13:03:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:03:11,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-16 13:03:11,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:03:11,956 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 13:03:11,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 13:03:13,546 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 13:03:13,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-16 13:03:13,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-16 13:03:14,979 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 13:03:14,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 13:03:15,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 13:03:16,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:16,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:16,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:16,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:16,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 13:03:17,365 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:03:17,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 13:03:17,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 13:03:17,949 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:03:17,950 INFO L350 Elim1Store]: Elim1 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 18 treesize of output 24 [2022-11-16 13:03:18,279 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:03:18,279 INFO L350 Elim1Store]: Elim1 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 18 treesize of output 24 [2022-11-16 13:03:18,639 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:03:18,639 INFO L350 Elim1Store]: Elim1 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 18 treesize of output 24 [2022-11-16 13:03:19,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 13:03:23,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:23,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:23,174 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 17 treesize of output 27 [2022-11-16 13:03:23,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 13:03:23,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 13:03:24,266 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 13:03:24,270 INFO L350 Elim1Store]: Elim1 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 60 treesize of output 66 [2022-11-16 13:03:28,054 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 13:03:28,054 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 59 [2022-11-16 13:03:28,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-16 13:03:28,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 13:03:29,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [445516859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 13:03:29,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 13:03:29,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 25] total 35 [2022-11-16 13:03:29,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318415086] [2022-11-16 13:03:29,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 13:03:29,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-16 13:03:29,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 13:03:29,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-16 13:03:29,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2517, Unknown=33, NotChecked=0, Total=2756 [2022-11-16 13:03:29,910 INFO L87 Difference]: Start difference. First operand 406 states and 485 transitions. Second operand has 37 states, 33 states have (on average 3.393939393939394) internal successors, (112), 31 states have internal predecessors, (112), 5 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 13:03:41,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 13:03:41,321 INFO L93 Difference]: Finished difference Result 518 states and 618 transitions. [2022-11-16 13:03:41,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 13:03:41,322 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 33 states have (on average 3.393939393939394) internal successors, (112), 31 states have internal predecessors, (112), 5 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 65 [2022-11-16 13:03:41,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 13:03:41,323 INFO L225 Difference]: With dead ends: 518 [2022-11-16 13:03:41,324 INFO L226 Difference]: Without dead ends: 518 [2022-11-16 13:03:41,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 163 SyntacticMatches, 10 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1558 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=480, Invalid=5035, Unknown=35, NotChecked=0, Total=5550 [2022-11-16 13:03:41,325 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 210 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 618 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-16 13:03:41,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 1690 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 382 Invalid, 0 Unknown, 618 Unchecked, 1.7s Time] [2022-11-16 13:03:41,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-11-16 13:03:41,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 451. [2022-11-16 13:03:41,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 372 states have (on average 1.3306451612903225) internal successors, (495), 418 states have internal predecessors, (495), 18 states have call successors, (18), 16 states have call predecessors, (18), 17 states have return successors, (22), 16 states have call predecessors, (22), 18 states have call successors, (22) [2022-11-16 13:03:41,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 535 transitions. [2022-11-16 13:03:41,335 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 535 transitions. Word has length 65 [2022-11-16 13:03:41,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 13:03:41,336 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 535 transitions. [2022-11-16 13:03:41,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 33 states have (on average 3.393939393939394) internal successors, (112), 31 states have internal predecessors, (112), 5 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 13:03:41,336 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 535 transitions. [2022-11-16 13:03:41,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 13:03:41,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 13:03:41,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 13:03:41,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2022-11-16 13:03:41,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (65)] Ended with exit code 0 [2022-11-16 13:03:41,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 13:03:41,755 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 13:03:41,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 13:03:41,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1945220086, now seen corresponding path program 1 times [2022-11-16 13:03:41,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 13:03:41,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168149640] [2022-11-16 13:03:41,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:03:41,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 13:03:41,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 13:03:41,757 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 13:03:41,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2022-11-16 13:03:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:03:43,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 135 conjunts are in the unsatisfiable core [2022-11-16 13:03:43,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:03:43,864 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 13:03:43,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 13:03:44,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 13:03:44,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 13:03:44,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 13:03:44,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 13:03:45,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 13:03:45,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 13:03:45,986 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 13:03:45,987 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 51 [2022-11-16 13:03:46,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:46,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-16 13:03:46,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 13:03:47,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:47,556 INFO L321 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2022-11-16 13:03:47,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2022-11-16 13:03:48,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:48,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-16 13:03:48,727 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 13:03:48,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 47 [2022-11-16 13:03:50,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:50,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:50,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:50,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:50,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 13:03:50,855 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 13:03:50,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 86 treesize of output 86 [2022-11-16 13:03:50,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:50,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:50,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:50,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:50,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:50,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 16 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 71 [2022-11-16 13:03:51,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-16 13:03:53,116 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-16 13:03:53,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 64 treesize of output 69 [2022-11-16 13:03:53,222 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 13:03:53,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 42 [2022-11-16 13:03:53,302 INFO L350 Elim1Store]: Elim1 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 39 treesize of output 27 [2022-11-16 13:03:53,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 13:03:53,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 13:03:54,038 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-16 13:03:54,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 64 treesize of output 69 [2022-11-16 13:03:54,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:54,150 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:03:54,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 42 [2022-11-16 13:03:54,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 13:03:54,207 INFO L350 Elim1Store]: Elim1 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 39 treesize of output 27 [2022-11-16 13:03:54,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 13:03:55,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 13:03:55,242 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-16 13:03:55,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 64 treesize of output 69 [2022-11-16 13:03:55,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:55,383 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:03:55,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 42 [2022-11-16 13:03:55,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 13:03:55,533 INFO L350 Elim1Store]: Elim1 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 39 treesize of output 27 [2022-11-16 13:03:56,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:56,392 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-16 13:03:56,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 64 treesize of output 65 [2022-11-16 13:03:56,448 INFO L350 Elim1Store]: Elim1 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 43 treesize of output 39 [2022-11-16 13:03:56,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:03:56,529 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 13:03:56,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 40 [2022-11-16 13:03:59,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2022-11-16 13:04:01,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:04:01,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 46 treesize of output 30 [2022-11-16 13:04:04,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:04:04,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 13:04:04,122 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2022-11-16 13:04:04,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 90 treesize of output 38 [2022-11-16 13:04:04,176 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 13:04:04,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 22 [2022-11-16 13:04:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 13:04:04,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 13:04:04,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 13:04:04,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168149640] [2022-11-16 13:04:04,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168149640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 13:04:04,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 13:04:04,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-11-16 13:04:04,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491411745] [2022-11-16 13:04:04,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 13:04:04,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-16 13:04:04,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 13:04:04,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-16 13:04:04,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1297, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 13:04:04,980 INFO L87 Difference]: Start difference. First operand 451 states and 535 transitions. Second operand has 38 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 31 states have internal predecessors, (60), 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) [2022-11-16 13:04:11,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 13:04:11,632 INFO L93 Difference]: Finished difference Result 474 states and 561 transitions. [2022-11-16 13:04:11,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 13:04:11,633 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 31 states have internal predecessors, (60), 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 68 [2022-11-16 13:04:11,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 13:04:11,634 INFO L225 Difference]: With dead ends: 474 [2022-11-16 13:04:11,635 INFO L226 Difference]: Without dead ends: 474 [2022-11-16 13:04:11,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=175, Invalid=2177, Unknown=0, NotChecked=0, Total=2352 [2022-11-16 13:04:11,635 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 49 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 515 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 13:04:11,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 2245 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 543 Invalid, 0 Unknown, 515 Unchecked, 2.7s Time] [2022-11-16 13:04:11,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-11-16 13:04:11,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 469. [2022-11-16 13:04:11,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 388 states have (on average 1.3221649484536082) internal successors, (513), 435 states have internal predecessors, (513), 19 states have call successors, (19), 17 states have call predecessors, (19), 18 states have return successors, (23), 16 states have call predecessors, (23), 19 states have call successors, (23) [2022-11-16 13:04:11,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 555 transitions. [2022-11-16 13:04:11,642 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 555 transitions. Word has length 68 [2022-11-16 13:04:11,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 13:04:11,642 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 555 transitions. [2022-11-16 13:04:11,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 31 states have internal predecessors, (60), 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) [2022-11-16 13:04:11,643 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 555 transitions. [2022-11-16 13:04:11,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 13:04:11,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 13:04:11,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 13:04:11,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2022-11-16 13:04:11,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 13:04:11,865 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 13:04:11,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 13:04:11,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1697073592, now seen corresponding path program 1 times [2022-11-16 13:04:11,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 13:04:11,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601100466] [2022-11-16 13:04:11,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:04:11,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 13:04:11,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 13:04:11,869 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 13:04:11,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-16 13:04:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:04:13,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-16 13:04:13,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:04:13,765 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 13:04:13,766 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-11-16 13:04:14,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 13:04:14,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 13:04:14,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 13:04:14,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 13:04:15,407 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 18 [2022-11-16 13:04:15,446 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-16 13:04:15,861 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 13:04:15,862 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 51 [2022-11-16 13:04:16,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:04:16,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-16 13:04:17,614 INFO L321 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2022-11-16 13:04:17,615 INFO L350 Elim1Store]: Elim1 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 4 case distinctions, treesize of input 31 treesize of output 35 [2022-11-16 13:04:23,126 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-16 13:04:23,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 115 treesize of output 109 [2022-11-16 13:04:23,305 INFO L321 Elim1Store]: treesize reduction 35, result has 32.7 percent of original size [2022-11-16 13:04:23,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 57 [2022-11-16 13:04:23,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-16 13:04:25,649 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-16 13:04:25,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 115 treesize of output 109 [2022-11-16 13:04:25,784 INFO L321 Elim1Store]: treesize reduction 35, result has 32.7 percent of original size [2022-11-16 13:04:25,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 57 [2022-11-16 13:04:25,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-16 13:04:27,910 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 13:04:27,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 59 [2022-11-16 13:04:28,003 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:04:28,004 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 32 [2022-11-16 13:04:28,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 13:04:28,043 INFO L350 Elim1Store]: Elim1 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 39 treesize of output 27 [2022-11-16 13:04:28,522 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 13:04:28,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 59 [2022-11-16 13:04:28,609 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:04:28,609 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 32 [2022-11-16 13:04:28,628 INFO L350 Elim1Store]: Elim1 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 39 treesize of output 27 [2022-11-16 13:04:28,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 13:04:29,187 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:04:29,188 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 34 [2022-11-16 13:04:29,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 13:04:29,352 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 13:04:29,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 59 [2022-11-16 13:04:29,364 INFO L350 Elim1Store]: Elim1 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 39 treesize of output 27 [2022-11-16 13:04:29,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:04:29,905 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 13:04:29,905 INFO L350 Elim1Store]: Elim1 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 57 treesize of output 55 [2022-11-16 13:04:29,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:04:29,936 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-16 13:04:32,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 13:04:32,496 INFO L321 Elim1Store]: treesize reduction 32, result has 8.6 percent of original size [2022-11-16 13:04:32,496 INFO L350 Elim1Store]: Elim1 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 59 treesize of output 31 [2022-11-16 13:04:32,556 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 13:04:32,556 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 13:04:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 13:04:33,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 13:04:33,232 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 13:04:33,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601100466] [2022-11-16 13:04:33,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601100466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 13:04:33,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 13:04:33,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-16 13:04:33,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384240933] [2022-11-16 13:04:33,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 13:04:33,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 13:04:33,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 13:04:33,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 13:04:33,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-11-16 13:04:33,235 INFO L87 Difference]: Start difference. First operand 469 states and 555 transitions. Second operand has 28 states, 25 states have (on average 2.4) internal successors, (60), 21 states have internal predecessors, (60), 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) [2022-11-16 13:04:38,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 13:04:38,400 INFO L93 Difference]: Finished difference Result 467 states and 551 transitions. [2022-11-16 13:04:38,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 13:04:38,401 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.4) internal successors, (60), 21 states have internal predecessors, (60), 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 68 [2022-11-16 13:04:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 13:04:38,403 INFO L225 Difference]: With dead ends: 467 [2022-11-16 13:04:38,403 INFO L226 Difference]: Without dead ends: 467 [2022-11-16 13:04:38,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=129, Invalid=1203, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 13:04:38,404 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 32 mSDsluCounter, 2017 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 487 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 13:04:38,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2163 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 504 Invalid, 0 Unknown, 487 Unchecked, 2.6s Time] [2022-11-16 13:04:38,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-11-16 13:04:38,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 439. [2022-11-16 13:04:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 363 states have (on average 1.3195592286501376) internal successors, (479), 408 states have internal predecessors, (479), 16 states have call successors, (16), 15 states have call predecessors, (16), 16 states have return successors, (20), 15 states have call predecessors, (20), 16 states have call successors, (20) [2022-11-16 13:04:38,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 515 transitions. [2022-11-16 13:04:38,411 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 515 transitions. Word has length 68 [2022-11-16 13:04:38,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 13:04:38,411 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 515 transitions. [2022-11-16 13:04:38,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.4) internal successors, (60), 21 states have internal predecessors, (60), 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) [2022-11-16 13:04:38,411 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 515 transitions. [2022-11-16 13:04:38,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 13:04:38,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 13:04:38,412 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 13:04:38,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2022-11-16 13:04:38,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 13:04:38,628 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 13:04:38,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 13:04:38,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1858576891, now seen corresponding path program 1 times [2022-11-16 13:04:38,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 13:04:38,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573886887] [2022-11-16 13:04:38,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:04:38,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 13:04:38,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 13:04:38,630 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 13:04:38,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2022-11-16 13:04:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:04:39,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-16 13:04:39,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:04:39,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 13:04:40,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 13:04:40,694 INFO L321 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-16 13:04:40,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 13:04:41,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:04:41,026 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 13:04:41,026 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 16 [2022-11-16 13:04:41,734 INFO L321 Elim1Store]: treesize reduction 102, result has 29.2 percent of original size [2022-11-16 13:04:41,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 37 treesize of output 67 [2022-11-16 13:04:42,547 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 32 [2022-11-16 13:04:43,130 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 32 [2022-11-16 13:04:43,918 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:04:43,918 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 36 [2022-11-16 13:04:43,971 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 16 [2022-11-16 13:04:44,289 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:04:44,289 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 36 [2022-11-16 13:04:44,343 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 16 [2022-11-16 13:04:44,790 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:04:44,791 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 36 [2022-11-16 13:04:44,804 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 16 [2022-11-16 13:04:45,268 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:04:45,269 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 36 [2022-11-16 13:04:45,280 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 16 [2022-11-16 13:04:48,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:04:48,152 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 13:04:48,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 48 [2022-11-16 13:04:48,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 13:04:49,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 13:04:49,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 13:04:56,953 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 13:04:56,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573886887] [2022-11-16 13:04:56,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573886887] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 13:04:56,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1110256158] [2022-11-16 13:04:56,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:04:56,954 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 13:04:56,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 13:04:56,956 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 13:04:56,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (69)] Waiting until timeout for monitored process [2022-11-16 13:04:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:04:58,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-16 13:04:58,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:04:59,388 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 13:04:59,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 13:05:02,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 13:05:02,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:02,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:02,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 25 treesize of output 36 [2022-11-16 13:05:03,250 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 11 [2022-11-16 13:05:05,005 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 13:05:05,006 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 51 [2022-11-16 13:05:06,607 INFO L350 Elim1Store]: Elim1 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 54 treesize of output 37 [2022-11-16 13:05:06,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 13:05:07,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:07,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:07,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:07,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:07,749 INFO L350 Elim1Store]: Elim1 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 36 treesize of output 47 [2022-11-16 13:05:07,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:07,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:07,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:07,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:07,846 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 13:05:07,847 INFO L350 Elim1Store]: Elim1 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 78 treesize of output 76 [2022-11-16 13:05:09,141 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 13:05:09,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 57 [2022-11-16 13:05:09,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 13:05:09,358 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:05:09,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 13:05:09,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 13:05:10,231 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 13:05:10,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 61 [2022-11-16 13:05:10,424 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:05:10,424 INFO L350 Elim1Store]: Elim1 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 18 treesize of output 24 [2022-11-16 13:05:10,844 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:05:10,844 INFO L350 Elim1Store]: Elim1 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 18 treesize of output 24 [2022-11-16 13:05:11,030 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 13:05:11,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 61 [2022-11-16 13:05:11,494 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 13:05:11,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 61 [2022-11-16 13:05:11,675 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:05:11,676 INFO L350 Elim1Store]: Elim1 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 18 treesize of output 24 [2022-11-16 13:05:14,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 13:05:17,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:17,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:17,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:17,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:17,994 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 28 treesize of output 43 [2022-11-16 13:05:19,553 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 13:05:19,554 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 33 [2022-11-16 13:05:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 13:05:21,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 13:05:34,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1110256158] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 13:05:34,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 13:05:34,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 30] total 50 [2022-11-16 13:05:34,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255748384] [2022-11-16 13:05:34,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 13:05:34,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-16 13:05:34,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 13:05:34,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-16 13:05:34,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=436, Invalid=4270, Unknown=124, NotChecked=0, Total=4830 [2022-11-16 13:05:34,651 INFO L87 Difference]: Start difference. First operand 439 states and 515 transitions. Second operand has 52 states, 45 states have (on average 2.688888888888889) internal successors, (121), 41 states have internal predecessors, (121), 8 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 13:05:51,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 13:05:51,065 INFO L93 Difference]: Finished difference Result 494 states and 575 transitions. [2022-11-16 13:05:51,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 13:05:51,065 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 45 states have (on average 2.688888888888889) internal successors, (121), 41 states have internal predecessors, (121), 8 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 68 [2022-11-16 13:05:51,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 13:05:51,067 INFO L225 Difference]: With dead ends: 494 [2022-11-16 13:05:51,067 INFO L226 Difference]: Without dead ends: 494 [2022-11-16 13:05:51,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 162 SyntacticMatches, 5 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2207 ImplicationChecksByTransitivity, 45.2s TimeCoverageRelationStatistics Valid=767, Invalid=6589, Unknown=126, NotChecked=0, Total=7482 [2022-11-16 13:05:51,068 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 418 mSDsluCounter, 2761 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 2343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1291 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-16 13:05:51,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 2910 Invalid, 2343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1000 Invalid, 0 Unknown, 1291 Unchecked, 7.0s Time] [2022-11-16 13:05:51,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-11-16 13:05:51,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 461. [2022-11-16 13:05:51,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 382 states have (on average 1.3272251308900525) internal successors, (507), 427 states have internal predecessors, (507), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (24), 15 states have call predecessors, (24), 18 states have call successors, (24) [2022-11-16 13:05:51,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 549 transitions. [2022-11-16 13:05:51,074 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 549 transitions. Word has length 68 [2022-11-16 13:05:51,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 13:05:51,075 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 549 transitions. [2022-11-16 13:05:51,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 45 states have (on average 2.688888888888889) internal successors, (121), 41 states have internal predecessors, (121), 8 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 13:05:51,075 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 549 transitions. [2022-11-16 13:05:51,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 13:05:51,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 13:05:51,076 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 13:05:51,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Ended with exit code 0 [2022-11-16 13:05:51,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (69)] Forceful destruction successful, exit code 0 [2022-11-16 13:05:51,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 13:05:51,479 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2022-11-16 13:05:51,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 13:05:51,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1858576892, now seen corresponding path program 1 times [2022-11-16 13:05:51,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 13:05:51,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462568253] [2022-11-16 13:05:51,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:05:51,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 13:05:51,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 13:05:51,482 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 13:05:51,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2022-11-16 13:05:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:05:52,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-16 13:05:52,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:05:52,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 13:05:52,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 13:05:53,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 13:05:53,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 13:05:53,843 INFO L321 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-16 13:05:53,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 13:05:53,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 13:05:54,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:54,247 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 13:05:54,248 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 16 [2022-11-16 13:05:54,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 13:05:54,983 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-16 13:05:54,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-16 13:05:55,194 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-11-16 13:05:55,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 35 [2022-11-16 13:05:55,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 13:05:56,004 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 30 [2022-11-16 13:05:56,406 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 30 [2022-11-16 13:05:56,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 13:05:57,139 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:05:57,139 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 28 [2022-11-16 13:05:57,177 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 10 [2022-11-16 13:05:57,300 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:05:57,301 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 20 [2022-11-16 13:05:57,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 13:05:57,561 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:05:57,561 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 28 [2022-11-16 13:05:57,579 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 10 [2022-11-16 13:05:57,708 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:05:57,708 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 20 [2022-11-16 13:05:57,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 13:05:58,039 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:05:58,040 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 20 [2022-11-16 13:05:58,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 13:05:58,164 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:05:58,164 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 28 [2022-11-16 13:05:58,182 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 10 [2022-11-16 13:05:58,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:58,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 13:05:58,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:05:58,484 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 24 [2022-11-16 13:05:59,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 13:05:59,617 INFO L350 Elim1Store]: Elim1 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 17 treesize of output 9 [2022-11-16 13:06:00,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 13:06:00,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 13:06:02,202 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_6237 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_fetch_item_~item#1.base| v_ArrVal_6237) |c_~#dev~0.base|) |c_~#dev~0.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_6236 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6237 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_fetch_item_~item#1.base| v_ArrVal_6237) |c_~#dev~0.base|) |c_~#dev~0.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_fetch_item_~item#1.base| v_ArrVal_6236) |c_~#dev~0.base|) |c_~#dev~0.offset|))))) is different from false [2022-11-16 13:06:02,428 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_6236 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6237 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_6237) |c_~#dev~0.base|) |c_~#dev~0.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_6236) |c_~#dev~0.base|) |c_~#dev~0.offset|)))) (forall ((v_ArrVal_6237 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_6237) |c_~#dev~0.base|) |c_~#dev~0.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0))))) is different from false [2022-11-16 13:06:12,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 13:06:12,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462568253] [2022-11-16 13:06:12,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462568253] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 13:06:12,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1640171672] [2022-11-16 13:06:12,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:06:12,975 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 13:06:12,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 13:06:12,976 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 13:06:12,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1542a4f7-e711-4b66-a06f-91afe2643089/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (71)] Waiting until timeout for monitored process [2022-11-16 13:06:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:06:14,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 103 conjunts are in the unsatisfiable core [2022-11-16 13:06:14,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:06:16,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 13:06:16,697 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 13:06:16,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 13:06:20,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 13:06:20,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 13:06:21,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:21,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:21,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 25 treesize of output 36 [2022-11-16 13:06:21,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:21,618 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 13:06:22,332 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 11 [2022-11-16 13:06:22,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 3 [2022-11-16 13:06:24,595 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-16 13:06:24,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-16 13:06:24,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 13:06:26,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 13:06:26,579 INFO L350 Elim1Store]: Elim1 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 52 treesize of output 35 [2022-11-16 13:06:28,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:28,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:28,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:28,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:28,057 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 13:06:28,057 INFO L350 Elim1Store]: Elim1 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 76 treesize of output 74 [2022-11-16 13:06:28,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:28,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:28,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:28,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:28,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:28,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2022-11-16 13:06:29,766 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-16 13:06:29,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 42 [2022-11-16 13:06:29,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 13:06:29,910 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 13:06:29,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 13:06:30,231 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 13:06:30,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 55 [2022-11-16 13:06:30,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 13:06:31,693 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 13:06:31,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 59 [2022-11-16 13:06:31,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:31,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:31,931 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:06:31,931 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 41 [2022-11-16 13:06:32,016 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 13:06:32,436 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 13:06:32,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 59 [2022-11-16 13:06:32,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:32,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:32,713 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:06:32,713 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 41 [2022-11-16 13:06:32,732 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 13:06:33,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:33,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 13:06:33,209 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 13:06:33,209 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 41 [2022-11-16 13:06:33,412 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 13:06:33,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 59 [2022-11-16 13:06:33,431 WARN L207 Elim1Store]: Array PQE input equivalent to false