./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d155cc00d5c2ba6f5ef1d5e883c6d133605de01ed97e4300960f893025d81fd1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:09:44,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:09:44,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:09:44,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:09:44,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:09:44,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:09:44,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:09:44,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:09:44,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:09:44,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:09:44,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:09:44,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:09:44,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:09:44,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:09:44,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:09:44,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:09:44,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:09:44,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:09:44,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:09:44,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:09:44,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:09:44,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:09:44,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:09:44,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:09:44,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:09:44,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:09:44,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:09:44,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:09:44,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:09:44,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:09:44,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:09:44,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:09:44,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:09:44,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:09:44,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:09:44,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:09:44,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:09:44,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:09:44,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:09:44,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:09:44,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:09:44,824 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:09:44,870 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:09:44,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:09:44,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:09:44,873 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:09:44,873 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:09:44,874 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:09:44,874 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:09:44,874 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:09:44,874 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:09:44,880 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:09:44,882 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:09:44,882 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:09:44,882 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:09:44,882 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:09:44,883 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:09:44,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:09:44,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:09:44,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:09:44,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:09:44,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:09:44,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:09:44,885 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:09:44,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:09:44,885 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:09:44,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:09:44,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:09:44,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:09:44,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:09:44,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:09:44,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:09:44,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:09:44,889 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:09:44,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:09:44,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:09:44,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:09:44,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:09:44,890 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d155cc00d5c2ba6f5ef1d5e883c6d133605de01ed97e4300960f893025d81fd1 [2021-11-03 04:09:45,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:09:45,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:09:45,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:09:45,209 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:09:45,210 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:09:45,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i [2021-11-03 04:09:45,299 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/data/dec793ee7/d5d3e2143f2b40e2811d56f9e0b31413/FLAG3b3b345cb [2021-11-03 04:09:46,090 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:09:46,091 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i [2021-11-03 04:09:46,136 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/data/dec793ee7/d5d3e2143f2b40e2811d56f9e0b31413/FLAG3b3b345cb [2021-11-03 04:09:46,176 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/data/dec793ee7/d5d3e2143f2b40e2811d56f9e0b31413 [2021-11-03 04:09:46,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:09:46,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:09:46,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:09:46,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:09:46,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:09:46,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:46" (1/1) ... [2021-11-03 04:09:46,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40dfc872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:46, skipping insertion in model container [2021-11-03 04:09:46,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:46" (1/1) ... [2021-11-03 04:09:46,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:09:46,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:09:46,568 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4499,4512] [2021-11-03 04:09:46,574 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4559,4572] [2021-11-03 04:09:46,601 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:09:46,609 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:09:47,538 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:47,539 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:47,540 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:47,541 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:47,541 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:47,555 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:47,556 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:47,558 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:47,558 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:47,560 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:47,561 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:47,562 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:47,562 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:47,900 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:09:47,902 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:09:47,903 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:09:47,904 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:09:47,906 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:09:47,906 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:09:47,907 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:09:47,908 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:09:47,908 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:09:47,909 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:09:48,023 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:09:48,038 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.IllegalArgumentException: byte size smaller than 1 makes no sense at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:194) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1054) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:962) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1369) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:249) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.translateInitializer(CHandler.java:2938) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2798) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2101) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:143) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1119) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:211) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1068) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1452) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3247) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2321) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:594) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 04:09:48,044 INFO L168 Benchmark]: Toolchain (without parser) took 1860.83 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 64.5 MB in the beginning and 68.5 MB in the end (delta: -4.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-11-03 04:09:48,045 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 102.8 MB. Free memory is still 55.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:09:48,046 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1858.49 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 64.2 MB in the beginning and 68.5 MB in the end (delta: -4.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-11-03 04:09:48,048 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 102.8 MB. Free memory is still 55.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1858.49 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 64.2 MB in the beginning and 68.5 MB in the end (delta: -4.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: IllegalArgumentException: byte size smaller than 1 makes no sense de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: IllegalArgumentException: byte size smaller than 1 makes no sense: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:194) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d155cc00d5c2ba6f5ef1d5e883c6d133605de01ed97e4300960f893025d81fd1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:09:50,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:09:50,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:09:50,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:09:50,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:09:50,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:09:50,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:09:50,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:09:50,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:09:50,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:09:50,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:09:50,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:09:50,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:09:50,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:09:50,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:09:50,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:09:50,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:09:50,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:09:50,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:09:50,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:09:50,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:09:50,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:09:50,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:09:50,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:09:50,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:09:50,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:09:50,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:09:50,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:09:50,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:09:50,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:09:50,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:09:50,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:09:50,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:09:50,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:09:50,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:09:50,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:09:50,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:09:50,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:09:50,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:09:50,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:09:50,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:09:50,325 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:09:50,370 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:09:50,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:09:50,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:09:50,371 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:09:50,372 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:09:50,372 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:09:50,372 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:09:50,372 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:09:50,373 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:09:50,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:09:50,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:09:50,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:09:50,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:09:50,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:09:50,376 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:09:50,376 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:09:50,376 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:09:50,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:09:50,377 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:09:50,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:09:50,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:09:50,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:09:50,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:09:50,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:09:50,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:09:50,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:09:50,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:09:50,379 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:09:50,379 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:09:50,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:09:50,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:09:50,380 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:09:50,380 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_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d155cc00d5c2ba6f5ef1d5e883c6d133605de01ed97e4300960f893025d81fd1 [2021-11-03 04:09:50,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:09:50,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:09:50,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:09:50,835 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:09:50,836 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:09:50,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i [2021-11-03 04:09:50,908 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/data/20b0a83eb/bbf79b9f9ec046baa96f94c3e521775f/FLAGd601a3219 [2021-11-03 04:09:51,801 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:09:51,803 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i [2021-11-03 04:09:51,854 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/data/20b0a83eb/bbf79b9f9ec046baa96f94c3e521775f/FLAGd601a3219 [2021-11-03 04:09:51,884 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/data/20b0a83eb/bbf79b9f9ec046baa96f94c3e521775f [2021-11-03 04:09:51,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:09:51,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:09:51,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:09:51,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:09:51,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:09:51,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:51" (1/1) ... [2021-11-03 04:09:51,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@355db1b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:51, skipping insertion in model container [2021-11-03 04:09:51,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:51" (1/1) ... [2021-11-03 04:09:51,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:09:52,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:09:52,414 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4499,4512] [2021-11-03 04:09:52,421 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4559,4572] [2021-11-03 04:09:52,442 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:09:52,448 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:09:53,538 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:53,540 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:53,541 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:53,542 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:53,544 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:53,566 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:53,566 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:53,568 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:53,568 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:53,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:53,571 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:53,571 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:53,572 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:53,948 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:09:53,949 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:09:53,950 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:09:53,951 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:09:53,953 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:09:53,953 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:09:53,967 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:09:53,968 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:09:53,969 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:09:53,969 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:09:54,134 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:09:54,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:09:54,204 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:09:54,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:09:54,242 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4499,4512] [2021-11-03 04:09:54,242 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4559,4572] [2021-11-03 04:09:54,244 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:09:54,250 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:09:54,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,309 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,309 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,313 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,314 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,323 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,323 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,325 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,325 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,326 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,327 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,327 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,328 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,382 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:09:54,383 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:09:54,383 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:09:54,384 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:09:54,385 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:09:54,385 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:09:54,386 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:09:54,386 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:09:54,387 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:09:54,387 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:09:54,417 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:09:54,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:09:54,453 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:09:54,470 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4499,4512] [2021-11-03 04:09:54,470 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4559,4572] [2021-11-03 04:09:54,472 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:09:54,472 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:09:54,540 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,540 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,541 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,541 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,542 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,549 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,549 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,550 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,551 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,551 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,552 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,552 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,553 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:09:54,583 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:09:54,584 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:09:54,584 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:09:54,585 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:09:54,586 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:09:54,586 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:09:54,586 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:09:54,587 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:09:54,587 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:09:54,587 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:09:54,604 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:09:54,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:09:54,918 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:09:54,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:54 WrapperNode [2021-11-03 04:09:54,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:09:54,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:09:54,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:09:54,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:09:54,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:54" (1/1) ... [2021-11-03 04:09:55,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:54" (1/1) ... [2021-11-03 04:09:55,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:09:55,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:09:55,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:09:55,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:09:55,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:54" (1/1) ... [2021-11-03 04:09:55,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:54" (1/1) ... [2021-11-03 04:09:55,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:54" (1/1) ... [2021-11-03 04:09:55,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:54" (1/1) ... [2021-11-03 04:09:55,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:54" (1/1) ... [2021-11-03 04:09:55,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:54" (1/1) ... [2021-11-03 04:09:55,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:54" (1/1) ... [2021-11-03 04:09:55,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:09:55,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:09:55,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:09:55,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:09:55,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:54" (1/1) ... [2021-11-03 04:09:55,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:09:55,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:09:55,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:09:55,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:09:55,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:09:55,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:09:55,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:09:55,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:09:55,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:09:55,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:09:55,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:09:55,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:09:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:09:56,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:09:56,279 INFO L299 CfgBuilder]: Removed 80 assume(true) statements. [2021-11-03 04:09:56,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:56 BoogieIcfgContainer [2021-11-03 04:09:56,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:09:56,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:09:56,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:09:56,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:09:56,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:09:51" (1/3) ... [2021-11-03 04:09:56,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e52f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:56, skipping insertion in model container [2021-11-03 04:09:56,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:54" (2/3) ... [2021-11-03 04:09:56,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e52f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:56, skipping insertion in model container [2021-11-03 04:09:56,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:56" (3/3) ... [2021-11-03 04:09:56,289 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_push_back_harness.i [2021-11-03 04:09:56,294 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:09:56,294 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-03 04:09:56,342 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:09:56,347 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:09:56,348 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-03 04:09:56,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 145 states have (on average 1.5310344827586206) internal successors, (222), 156 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:56,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-03 04:09:56,372 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:09:56,372 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:09:56,373 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:09:56,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:09:56,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1015878758, now seen corresponding path program 1 times [2021-11-03 04:09:56,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:09:56,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466150495] [2021-11-03 04:09:56,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:09:56,393 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:09:56,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:09:56,397 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:09:56,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:09:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:09:56,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:09:56,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:09:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:56,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:09:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:56,989 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:09:56,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466150495] [2021-11-03 04:09:56,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466150495] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:09:56,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:09:56,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:09:56,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826729252] [2021-11-03 04:09:56,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:09:56,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:09:57,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:09:57,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:09:57,024 INFO L87 Difference]: Start difference. First operand has 157 states, 145 states have (on average 1.5310344827586206) internal successors, (222), 156 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:57,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:09:57,057 INFO L93 Difference]: Finished difference Result 310 states and 439 transitions. [2021-11-03 04:09:57,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:09:57,059 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-03 04:09:57,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:09:57,069 INFO L225 Difference]: With dead ends: 310 [2021-11-03 04:09:57,069 INFO L226 Difference]: Without dead ends: 152 [2021-11-03 04:09:57,072 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:09:57,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-03 04:09:57,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-03 04:09:57,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 141 states have (on average 1.3971631205673758) internal successors, (197), 151 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:57,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 197 transitions. [2021-11-03 04:09:57,115 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 197 transitions. Word has length 37 [2021-11-03 04:09:57,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:09:57,115 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 197 transitions. [2021-11-03 04:09:57,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:57,116 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 197 transitions. [2021-11-03 04:09:57,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-03 04:09:57,117 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:09:57,117 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:09:57,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 04:09:57,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:09:57,333 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:09:57,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:09:57,334 INFO L85 PathProgramCache]: Analyzing trace with hash 422083482, now seen corresponding path program 1 times [2021-11-03 04:09:57,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:09:57,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086495459] [2021-11-03 04:09:57,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:09:57,335 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:09:57,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:09:57,341 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:09:57,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:09:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:09:57,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:09:57,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:09:57,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:57,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:09:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:57,974 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:09:57,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086495459] [2021-11-03 04:09:57,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086495459] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:09:57,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:09:57,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:09:57,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218842554] [2021-11-03 04:09:57,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:09:57,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:09:57,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:09:57,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:09:57,978 INFO L87 Difference]: Start difference. First operand 152 states and 197 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:58,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:09:58,056 INFO L93 Difference]: Finished difference Result 294 states and 382 transitions. [2021-11-03 04:09:58,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:09:58,057 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-03 04:09:58,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:09:58,059 INFO L225 Difference]: With dead ends: 294 [2021-11-03 04:09:58,059 INFO L226 Difference]: Without dead ends: 152 [2021-11-03 04:09:58,060 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:09:58,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-03 04:09:58,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-03 04:09:58,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 141 states have (on average 1.3829787234042554) internal successors, (195), 151 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:58,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 195 transitions. [2021-11-03 04:09:58,074 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 195 transitions. Word has length 37 [2021-11-03 04:09:58,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:09:58,075 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 195 transitions. [2021-11-03 04:09:58,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:58,075 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 195 transitions. [2021-11-03 04:09:58,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-03 04:09:58,076 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:09:58,077 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:09:58,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:09:58,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:09:58,294 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:09:58,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:09:58,294 INFO L85 PathProgramCache]: Analyzing trace with hash -964119912, now seen corresponding path program 1 times [2021-11-03 04:09:58,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:09:58,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772996512] [2021-11-03 04:09:58,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:09:58,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:09:58,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:09:58,297 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:09:58,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:09:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:09:58,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:09:58,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:09:58,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:58,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:09:58,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:58,748 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:09:58,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772996512] [2021-11-03 04:09:58,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772996512] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:09:58,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:09:58,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:09:58,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62439585] [2021-11-03 04:09:58,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:09:58,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:09:58,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:09:58,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:09:58,755 INFO L87 Difference]: Start difference. First operand 152 states and 195 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:58,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:09:58,818 INFO L93 Difference]: Finished difference Result 316 states and 394 transitions. [2021-11-03 04:09:58,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:09:58,819 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-03 04:09:58,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:09:58,824 INFO L225 Difference]: With dead ends: 316 [2021-11-03 04:09:58,827 INFO L226 Difference]: Without dead ends: 192 [2021-11-03 04:09:58,831 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:09:58,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-03 04:09:58,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 152. [2021-11-03 04:09:58,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 141 states have (on average 1.375886524822695) internal successors, (194), 151 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:58,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 194 transitions. [2021-11-03 04:09:58,853 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 194 transitions. Word has length 37 [2021-11-03 04:09:58,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:09:58,854 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 194 transitions. [2021-11-03 04:09:58,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:58,858 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 194 transitions. [2021-11-03 04:09:58,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 04:09:58,859 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:09:58,859 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:09:58,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:09:59,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:09:59,060 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:09:59,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:09:59,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1303112067, now seen corresponding path program 1 times [2021-11-03 04:09:59,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:09:59,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705880567] [2021-11-03 04:09:59,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:09:59,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:09:59,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:09:59,065 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:09:59,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:09:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:09:59,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:09:59,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:09:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:59,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:09:59,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:59,659 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:09:59,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705880567] [2021-11-03 04:09:59,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705880567] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:09:59,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:09:59,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:09:59,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440963157] [2021-11-03 04:09:59,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:09:59,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:09:59,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:09:59,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:09:59,666 INFO L87 Difference]: Start difference. First operand 152 states and 194 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:59,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:09:59,840 INFO L93 Difference]: Finished difference Result 325 states and 406 transitions. [2021-11-03 04:09:59,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:09:59,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-03 04:09:59,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:09:59,844 INFO L225 Difference]: With dead ends: 325 [2021-11-03 04:09:59,844 INFO L226 Difference]: Without dead ends: 200 [2021-11-03 04:09:59,845 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:09:59,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-03 04:09:59,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 152. [2021-11-03 04:09:59,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 141 states have (on average 1.3617021276595744) internal successors, (192), 151 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:59,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 192 transitions. [2021-11-03 04:09:59,870 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 192 transitions. Word has length 39 [2021-11-03 04:09:59,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:09:59,870 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 192 transitions. [2021-11-03 04:09:59,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:59,871 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 192 transitions. [2021-11-03 04:09:59,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 04:09:59,875 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:09:59,875 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:09:59,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:00,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:10:00,093 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:10:00,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:00,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1958868289, now seen corresponding path program 1 times [2021-11-03 04:10:00,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:00,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075169862] [2021-11-03 04:10:00,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:00,095 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:00,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:00,096 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:00,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:10:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:00,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:10:00,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:00,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:00,681 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:10:00,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075169862] [2021-11-03 04:10:00,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075169862] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:00,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:00,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-03 04:10:00,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243244626] [2021-11-03 04:10:00,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:10:00,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:10:00,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:10:00,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:10:00,683 INFO L87 Difference]: Start difference. First operand 152 states and 192 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:00,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:00,987 INFO L93 Difference]: Finished difference Result 448 states and 556 transitions. [2021-11-03 04:10:00,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:10:00,987 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-03 04:10:00,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:00,989 INFO L225 Difference]: With dead ends: 448 [2021-11-03 04:10:00,989 INFO L226 Difference]: Without dead ends: 322 [2021-11-03 04:10:00,990 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:10:00,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-03 04:10:01,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 154. [2021-11-03 04:10:01,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 143 states have (on average 1.3566433566433567) internal successors, (194), 153 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:01,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 194 transitions. [2021-11-03 04:10:01,016 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 194 transitions. Word has length 41 [2021-11-03 04:10:01,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:01,017 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 194 transitions. [2021-11-03 04:10:01,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:01,017 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 194 transitions. [2021-11-03 04:10:01,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 04:10:01,018 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:01,018 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:10:01,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:01,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:10:01,222 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:10:01,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:01,222 INFO L85 PathProgramCache]: Analyzing trace with hash -849015639, now seen corresponding path program 1 times [2021-11-03 04:10:01,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:01,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984502078] [2021-11-03 04:10:01,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:01,223 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:01,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:01,224 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:01,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:10:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:01,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:10:01,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:01,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:01,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:01,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:01,831 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:10:01,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984502078] [2021-11-03 04:10:01,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984502078] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:01,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:01,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 3] imperfect sequences [] total 7 [2021-11-03 04:10:01,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343881817] [2021-11-03 04:10:01,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:10:01,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:10:01,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:10:01,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:10:01,835 INFO L87 Difference]: Start difference. First operand 154 states and 194 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:02,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:02,278 INFO L93 Difference]: Finished difference Result 508 states and 626 transitions. [2021-11-03 04:10:02,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:10:02,280 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-03 04:10:02,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:02,283 INFO L225 Difference]: With dead ends: 508 [2021-11-03 04:10:02,283 INFO L226 Difference]: Without dead ends: 381 [2021-11-03 04:10:02,284 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:10:02,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-11-03 04:10:02,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 158. [2021-11-03 04:10:02,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 147 states have (on average 1.3537414965986394) internal successors, (199), 157 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:02,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 199 transitions. [2021-11-03 04:10:02,297 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 199 transitions. Word has length 42 [2021-11-03 04:10:02,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:02,298 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 199 transitions. [2021-11-03 04:10:02,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:02,298 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 199 transitions. [2021-11-03 04:10:02,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 04:10:02,299 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:02,299 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:10:02,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:02,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:10:02,525 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:10:02,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:02,525 INFO L85 PathProgramCache]: Analyzing trace with hash 524572173, now seen corresponding path program 1 times [2021-11-03 04:10:02,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:02,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188831987] [2021-11-03 04:10:02,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:02,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:02,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:02,528 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:02,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:10:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:02,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 04:10:02,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:03,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:03,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:03,197 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:10:03,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188831987] [2021-11-03 04:10:03,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188831987] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:03,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:03,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-03 04:10:03,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171053909] [2021-11-03 04:10:03,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:10:03,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:10:03,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:10:03,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:10:03,199 INFO L87 Difference]: Start difference. First operand 158 states and 199 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:03,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:03,628 INFO L93 Difference]: Finished difference Result 462 states and 573 transitions. [2021-11-03 04:10:03,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:10:03,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-03 04:10:03,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:03,631 INFO L225 Difference]: With dead ends: 462 [2021-11-03 04:10:03,632 INFO L226 Difference]: Without dead ends: 324 [2021-11-03 04:10:03,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:10:03,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-03 04:10:03,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 160. [2021-11-03 04:10:03,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 149 states have (on average 1.348993288590604) internal successors, (201), 159 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:03,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 201 transitions. [2021-11-03 04:10:03,643 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 201 transitions. Word has length 47 [2021-11-03 04:10:03,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:03,643 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 201 transitions. [2021-11-03 04:10:03,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:03,644 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 201 transitions. [2021-11-03 04:10:03,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 04:10:03,644 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:03,645 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:10:03,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:03,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:10:03,863 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:10:03,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:03,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1034045263, now seen corresponding path program 1 times [2021-11-03 04:10:03,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:03,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122625880] [2021-11-03 04:10:03,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:03,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:03,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:03,865 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:03,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:10:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:04,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:10:04,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:04,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:04,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:04,444 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:10:04,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122625880] [2021-11-03 04:10:04,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122625880] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:04,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:04,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:10:04,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702676017] [2021-11-03 04:10:04,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:10:04,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:10:04,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:10:04,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:10:04,446 INFO L87 Difference]: Start difference. First operand 160 states and 201 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:04,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:04,541 INFO L93 Difference]: Finished difference Result 380 states and 463 transitions. [2021-11-03 04:10:04,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:10:04,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-03 04:10:04,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:04,543 INFO L225 Difference]: With dead ends: 380 [2021-11-03 04:10:04,543 INFO L226 Difference]: Without dead ends: 250 [2021-11-03 04:10:04,543 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:10:04,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-03 04:10:04,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 160. [2021-11-03 04:10:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 149 states have (on average 1.342281879194631) internal successors, (200), 159 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:04,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 200 transitions. [2021-11-03 04:10:04,552 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 200 transitions. Word has length 47 [2021-11-03 04:10:04,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:04,553 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 200 transitions. [2021-11-03 04:10:04,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:04,553 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 200 transitions. [2021-11-03 04:10:04,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 04:10:04,554 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:04,554 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:10:04,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:04,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:10:04,772 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:10:04,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:04,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2076397329, now seen corresponding path program 1 times [2021-11-03 04:10:04,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:04,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073563891] [2021-11-03 04:10:04,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:04,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:04,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:04,774 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:04,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:10:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:05,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-03 04:10:05,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:05,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-03 04:10:05,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-03 04:10:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:05,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:06,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:06,007 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:10:06,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073563891] [2021-11-03 04:10:06,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073563891] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:10:06,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1371606178] [2021-11-03 04:10:06,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:06,008 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:10:06,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:10:06,016 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:10:06,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-03 04:10:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:06,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:10:06,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:06,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:10:06,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:06,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:10:06,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1371606178] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:06,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:10:06,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [8, 8] total 14 [2021-11-03 04:10:06,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732317040] [2021-11-03 04:10:06,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:10:06,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:10:06,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:10:06,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:10:06,783 INFO L87 Difference]: Start difference. First operand 160 states and 200 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:06,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:06,976 INFO L93 Difference]: Finished difference Result 432 states and 521 transitions. [2021-11-03 04:10:06,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:10:06,977 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-03 04:10:06,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:06,979 INFO L225 Difference]: With dead ends: 432 [2021-11-03 04:10:06,979 INFO L226 Difference]: Without dead ends: 301 [2021-11-03 04:10:06,980 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:10:06,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-11-03 04:10:06,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 160. [2021-11-03 04:10:06,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 149 states have (on average 1.3355704697986577) internal successors, (199), 159 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 199 transitions. [2021-11-03 04:10:06,992 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 199 transitions. Word has length 49 [2021-11-03 04:10:06,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:06,993 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 199 transitions. [2021-11-03 04:10:06,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:06,993 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 199 transitions. [2021-11-03 04:10:06,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 04:10:06,997 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:06,997 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 04:10:07,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:07,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:07,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:10:07,413 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:10:07,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:07,413 INFO L85 PathProgramCache]: Analyzing trace with hash -309833065, now seen corresponding path program 1 times [2021-11-03 04:10:07,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:07,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509189379] [2021-11-03 04:10:07,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:07,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:07,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:07,415 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:07,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:10:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:08,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-03 04:10:08,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:08,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-03 04:10:08,342 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-03 04:10:08,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2021-11-03 04:10:11,390 INFO L354 Elim1Store]: treesize reduction 1628, result has 11.4 percent of original size [2021-11-03 04:10:11,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 4163 treesize of output 2462 [2021-11-03 04:10:12,061 INFO L354 Elim1Store]: treesize reduction 1278, result has 10.3 percent of original size [2021-11-03 04:10:12,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 19437 treesize of output 8200 [2021-11-03 04:10:12,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:10:12,572 INFO L354 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2021-11-03 04:10:12,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 21 [2021-11-03 04:10:12,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:10:12,875 INFO L354 Elim1Store]: treesize reduction 23, result has 48.9 percent of original size [2021-11-03 04:10:12,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 646 treesize of output 506 [2021-11-03 04:10:13,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:10:13,111 INFO L354 Elim1Store]: treesize reduction 111, result has 6.7 percent of original size [2021-11-03 04:10:13,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 8747 treesize of output 6725 [2021-11-03 04:10:13,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:10:13,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 100 [2021-11-03 04:10:14,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:10:14,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 74 [2021-11-03 04:10:14,113 INFO L354 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2021-11-03 04:10:14,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 216 treesize of output 157 [2021-11-03 04:10:14,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:14,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:17,328 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset (_ BitVec 64))) (= (select (select (let ((.cse1 (bvadd (_ bv8 64) c_ULTIMATE.start_aws_linked_list_insert_before_~before.offset))) (let ((.cse0 (let ((.cse5 (bvadd (_ bv8 64) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base (let ((.cse6 (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset c_ULTIMATE.start_aws_linked_list_insert_before_~before.base))) (store .cse6 .cse5 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base .cse6) c_ULTIMATE.start_aws_linked_list_insert_before_~before.base) .cse1)))) c_ULTIMATE.start_aws_linked_list_insert_before_~before.base) .cse1)) (.cse2 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base (let ((.cse4 (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset c_ULTIMATE.start_aws_linked_list_insert_before_~before.offset))) (store .cse4 .cse5 (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base .cse4) c_ULTIMATE.start_aws_linked_list_insert_before_~before.base) .cse1)))))) (store .cse2 .cse3 (store (select .cse2 .cse3) (select (select .cse2 c_ULTIMATE.start_aws_linked_list_insert_before_~before.base) .cse1) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset)))))) (store .cse0 c_ULTIMATE.start_aws_linked_list_insert_before_~before.base (store (select .cse0 c_ULTIMATE.start_aws_linked_list_insert_before_~before.base) .cse1 ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset)))) c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset) c_ULTIMATE.start_aws_linked_list_insert_before_~before.offset)) (forall ((ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset (_ BitVec 64))) (= (select (select (let ((.cse8 (bvadd (_ bv8 64) c_ULTIMATE.start_aws_linked_list_insert_before_~before.offset))) (let ((.cse7 (let ((.cse12 (bvadd (_ bv8 64) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset))) (let ((.cse9 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base (let ((.cse13 (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset c_ULTIMATE.start_aws_linked_list_insert_before_~before.base))) (store .cse13 .cse12 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base .cse13) c_ULTIMATE.start_aws_linked_list_insert_before_~before.base) .cse8)))))) (let ((.cse10 (select (select .cse9 c_ULTIMATE.start_aws_linked_list_insert_before_~before.base) .cse8))) (store .cse9 .cse10 (store (select .cse9 .cse10) (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base (let ((.cse11 (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset c_ULTIMATE.start_aws_linked_list_insert_before_~before.offset))) (store .cse11 .cse12 (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base .cse11) c_ULTIMATE.start_aws_linked_list_insert_before_~before.base) .cse8)))) c_ULTIMATE.start_aws_linked_list_insert_before_~before.base) .cse8) c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base))))))) (store .cse7 c_ULTIMATE.start_aws_linked_list_insert_before_~before.base (store (select .cse7 c_ULTIMATE.start_aws_linked_list_insert_before_~before.base) .cse8 c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base)))) c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset) c_ULTIMATE.start_aws_linked_list_insert_before_~before.base))) is different from false [2021-11-03 04:10:21,498 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset (_ BitVec 64))) (let ((.cse6 (bvadd c_ULTIMATE.start_aws_linked_list_push_back_~list.offset (_ bv16 64)))) (= (select (select (let ((.cse1 (bvadd c_ULTIMATE.start_aws_linked_list_push_back_~list.offset (_ bv24 64)))) (let ((.cse0 (let ((.cse5 (bvadd (_ bv8 64) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_push_back_~node.base (let ((.cse7 (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_push_back_~node.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset c_ULTIMATE.start_aws_linked_list_push_back_~list.base))) (store .cse7 .cse5 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_push_back_~node.base .cse7) c_ULTIMATE.start_aws_linked_list_push_back_~list.base) .cse1)))) c_ULTIMATE.start_aws_linked_list_push_back_~list.base) .cse1)) (.cse2 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_push_back_~node.base (let ((.cse4 (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_push_back_~node.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset .cse6))) (store .cse4 .cse5 (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_push_back_~node.base .cse4) c_ULTIMATE.start_aws_linked_list_push_back_~list.base) .cse1)))))) (store .cse2 .cse3 (store (select .cse2 .cse3) (select (select .cse2 c_ULTIMATE.start_aws_linked_list_push_back_~list.base) .cse1) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset)))))) (store .cse0 c_ULTIMATE.start_aws_linked_list_push_back_~list.base (store (select .cse0 c_ULTIMATE.start_aws_linked_list_push_back_~list.base) .cse1 ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset)))) c_ULTIMATE.start_aws_linked_list_push_back_~node.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset) .cse6))) (forall ((ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset (_ BitVec 64))) (= (select (select (let ((.cse9 (bvadd c_ULTIMATE.start_aws_linked_list_push_back_~list.offset (_ bv24 64)))) (let ((.cse8 (let ((.cse13 (bvadd (_ bv8 64) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset))) (let ((.cse10 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_push_back_~node.base (let ((.cse14 (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_push_back_~node.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset c_ULTIMATE.start_aws_linked_list_push_back_~list.base))) (store .cse14 .cse13 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_push_back_~node.base .cse14) c_ULTIMATE.start_aws_linked_list_push_back_~list.base) .cse9)))))) (let ((.cse11 (select (select .cse10 c_ULTIMATE.start_aws_linked_list_push_back_~list.base) .cse9))) (store .cse10 .cse11 (store (select .cse10 .cse11) (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_push_back_~node.base (let ((.cse12 (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_push_back_~node.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset (bvadd c_ULTIMATE.start_aws_linked_list_push_back_~list.offset (_ bv16 64))))) (store .cse12 .cse13 (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_push_back_~node.base .cse12) c_ULTIMATE.start_aws_linked_list_push_back_~list.base) .cse9)))) c_ULTIMATE.start_aws_linked_list_push_back_~list.base) .cse9) c_ULTIMATE.start_aws_linked_list_push_back_~node.base))))))) (store .cse8 c_ULTIMATE.start_aws_linked_list_push_back_~list.base (store (select .cse8 c_ULTIMATE.start_aws_linked_list_push_back_~list.base) .cse9 c_ULTIMATE.start_aws_linked_list_push_back_~node.base)))) c_ULTIMATE.start_aws_linked_list_push_back_~node.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset) c_ULTIMATE.start_aws_linked_list_push_back_~list.base))) is different from false [2021-11-03 04:10:38,599 WARN L207 SmtUtils]: Spent 6.75 s on a formula simplification that was a NOOP. DAG size: 57 [2021-11-03 04:10:58,683 WARN L207 SmtUtils]: Spent 8.36 s on a formula simplification that was a NOOP. DAG size: 60 [2021-11-03 04:11:01,773 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:11:01,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6287 treesize of output 5996 [2021-11-03 04:11:57,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:11:57,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 216 treesize of output 204 [2021-11-03 04:12:02,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:12:02,469 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:12:02,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509189379] [2021-11-03 04:12:02,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509189379] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:12:02,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2120613022] [2021-11-03 04:12:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:12:02,471 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:12:02,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:12:02,472 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:12:02,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0605f70-8e3f-48c8-a06c-0a5fe10f52b4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-03 04:12:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:12:04,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-03 04:12:04,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:12:04,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-03 04:12:07,650 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-03 04:12:07,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2021-11-03 04:12:14,231 INFO L354 Elim1Store]: treesize reduction 261, result has 15.8 percent of original size [2021-11-03 04:12:14,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 365 treesize of output 246 [2021-11-03 04:12:14,744 INFO L354 Elim1Store]: treesize reduction 217, result has 25.7 percent of original size [2021-11-03 04:12:14,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 117 treesize of output 129 [2021-11-03 04:12:16,806 INFO L354 Elim1Store]: treesize reduction 86, result has 3.4 percent of original size [2021-11-03 04:12:16,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 152 treesize of output 89 [2021-11-03 04:12:16,850 INFO L354 Elim1Store]: treesize reduction 70, result has 4.1 percent of original size [2021-11-03 04:12:16,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 36 [2021-11-03 04:12:16,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:12:16,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:03,993 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:13:03,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 8155 treesize of output 7708 [2021-11-03 04:13:42,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 790726 treesize of output 754990 [2021-11-03 04:15:02,407 WARN L207 SmtUtils]: Spent 1.34 m on a formula simplification. DAG size of input: 611 DAG size of output: 611 [2021-11-03 04:15:23,146 WARN L207 SmtUtils]: Spent 12.02 s on a formula simplification. DAG size of input: 575 DAG size of output: 575 [2021-11-03 04:15:43,642 WARN L207 SmtUtils]: Spent 6.02 s on a formula simplification. DAG size of input: 570 DAG size of output: 570 [2021-11-03 04:16:02,595 WARN L207 SmtUtils]: Spent 5.88 s on a formula simplification. DAG size of input: 570 DAG size of output: 570 [2021-11-03 04:16:15,451 WARN L207 SmtUtils]: Spent 9.40 s on a formula simplification. DAG size of input: 572 DAG size of output: 572 [2021-11-03 04:16:26,204 WARN L207 SmtUtils]: Spent 5.13 s on a formula simplification. DAG size of input: 570 DAG size of output: 570 [2021-11-03 04:17:01,355 WARN L207 SmtUtils]: Spent 9.44 s on a formula simplification. DAG size of input: 570 DAG size of output: 570 [2021-11-03 04:17:42,962 WARN L207 SmtUtils]: Spent 5.27 s on a formula simplification. DAG size of input: 556 DAG size of output: 556 [2021-11-03 04:18:00,752 WARN L207 SmtUtils]: Spent 5.46 s on a formula simplification. DAG size of input: 553 DAG size of output: 553 [2021-11-03 04:22:02,895 WARN L207 SmtUtils]: Spent 5.07 s on a formula simplification. DAG size of input: 553 DAG size of output: 553 [2021-11-03 04:22:11,638 WARN L207 SmtUtils]: Spent 5.86 s on a formula simplification. DAG size of input: 551 DAG size of output: 551 [2021-11-03 04:22:20,200 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification. DAG size of input: 551 DAG size of output: 551 [2021-11-03 04:22:36,093 WARN L207 SmtUtils]: Spent 6.01 s on a formula simplification. DAG size of input: 550 DAG size of output: 550 [2021-11-03 04:22:46,045 WARN L207 SmtUtils]: Spent 5.48 s on a formula simplification. DAG size of input: 551 DAG size of output: 551 [2021-11-03 04:23:14,004 WARN L207 SmtUtils]: Spent 5.01 s on a formula simplification. DAG size of input: 558 DAG size of output: 558 [2021-11-03 04:23:20,971 WARN L207 SmtUtils]: Spent 5.10 s on a formula simplification. DAG size of input: 558 DAG size of output: 558 [2021-11-03 04:23:28,446 WARN L207 SmtUtils]: Spent 5.60 s on a formula simplification. DAG size of input: 556 DAG size of output: 556 [2021-11-03 04:23:36,771 WARN L207 SmtUtils]: Spent 5.56 s on a formula simplification. DAG size of input: 556 DAG size of output: 556 [2021-11-03 04:23:52,329 WARN L207 SmtUtils]: Spent 5.34 s on a formula simplification. DAG size of input: 534 DAG size of output: 534