./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_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_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/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_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/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_e7c4edbb-e620-41d1-bd5a-5a32991604d5/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 caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:59:09,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:59:09,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:59:09,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:59:09,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:59:09,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:59:09,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:59:09,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:59:09,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:59:09,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:59:09,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:59:09,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:59:09,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:59:09,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:59:09,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:59:09,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:59:09,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:59:09,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:59:09,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:59:09,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:59:09,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:59:09,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:59:09,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:59:09,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:59:09,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:59:09,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:59:09,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:59:09,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:59:09,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:59:09,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:59:09,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:59:09,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:59:09,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:59:09,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:59:09,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:59:09,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:59:09,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:59:09,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:59:09,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:59:09,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:59:09,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:59:09,905 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:59:09,949 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:59:09,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:59:09,951 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:59:09,951 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:59:09,951 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:59:09,952 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:59:09,952 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:59:09,952 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:59:09,953 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:59:09,955 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:59:09,963 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:59:09,963 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:59:09,963 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:59:09,964 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:59:09,964 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:59:09,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:59:09,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:59:09,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:59:09,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:59:09,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:59:09,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:59:09,966 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:59:09,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:59:09,966 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:59:09,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:59:09,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:59:09,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:59:09,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:59:09,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:59:09,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:59:09,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:59:09,968 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:59:09,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:59:09,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:59:09,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:59:09,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:59:09,969 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_e7c4edbb-e620-41d1-bd5a-5a32991604d5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a [2021-11-03 04:59:10,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:59:10,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:59:10,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:59:10,258 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:59:10,259 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:59:10,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2021-11-03 04:59:10,315 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/data/67e1846f0/f92e352cafef47c5978367f9d0745f9c/FLAG4a3f4b29b [2021-11-03 04:59:11,134 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:59:11,134 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2021-11-03 04:59:11,177 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/data/67e1846f0/f92e352cafef47c5978367f9d0745f9c/FLAG4a3f4b29b [2021-11-03 04:59:11,611 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/data/67e1846f0/f92e352cafef47c5978367f9d0745f9c [2021-11-03 04:59:11,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:59:11,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:59:11,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:59:11,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:59:11,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:59:11,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:59:11" (1/1) ... [2021-11-03 04:59:11,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605cd54e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:59:11, skipping insertion in model container [2021-11-03 04:59:11,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:59:11" (1/1) ... [2021-11-03 04:59:11,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:59:11,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:59:12,019 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_e7c4edbb-e620-41d1-bd5a-5a32991604d5/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2021-11-03 04:59:12,026 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_e7c4edbb-e620-41d1-bd5a-5a32991604d5/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2021-11-03 04:59:12,049 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:59:12,054 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:59:12,879 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:12,880 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:12,880 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:12,881 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:12,882 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:12,896 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:12,897 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:12,899 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:12,900 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:13,282 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:59:13,283 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:59:13,284 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:59:13,286 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:59:13,287 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:59:13,288 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:59:13,289 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:59:13,289 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:59:13,290 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:59:13,291 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:59:13,466 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:59:13,482 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 04:59:13,487 INFO L168 Benchmark]: Toolchain (without parser) took 1869.86 ms. Allocated memory is still 121.6 MB. Free memory was 76.4 MB in the beginning and 61.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:59:13,488 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 121.6 MB. Free memory is still 102.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:59:13,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1867.56 ms. Allocated memory is still 121.6 MB. Free memory was 76.1 MB in the beginning and 61.3 MB in the end (delta: 14.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:59:13,491 INFO L339 ainManager$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 121.6 MB. Free memory is still 102.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1867.56 ms. Allocated memory is still 121.6 MB. Free memory was 76.1 MB in the beginning and 61.3 MB in the end (delta: 14.8 MB). Peak memory consumption was 15.7 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_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/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_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/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_e7c4edbb-e620-41d1-bd5a-5a32991604d5/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 caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:59:15,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:59:15,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:59:15,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:59:15,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:59:15,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:59:15,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:59:15,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:59:15,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:59:15,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:59:15,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:59:15,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:59:15,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:59:15,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:59:15,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:59:15,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:59:15,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:59:15,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:59:15,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:59:15,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:59:15,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:59:15,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:59:15,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:59:15,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:59:15,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:59:15,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:59:15,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:59:15,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:59:15,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:59:15,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:59:15,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:59:15,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:59:15,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:59:15,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:59:15,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:59:15,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:59:15,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:59:15,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:59:15,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:59:15,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:59:15,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:59:15,833 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:59:15,880 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:59:15,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:59:15,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:59:15,881 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:59:15,882 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:59:15,882 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:59:15,882 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:59:15,882 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:59:15,882 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:59:15,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:59:15,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:59:15,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:59:15,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:59:15,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:59:15,885 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:59:15,886 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:59:15,886 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:59:15,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:59:15,886 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:59:15,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:59:15,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:59:15,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:59:15,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:59:15,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:59:15,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:59:15,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:59:15,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:59:15,888 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:59:15,888 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:59:15,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:59:15,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:59:15,889 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:59:15,889 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_e7c4edbb-e620-41d1-bd5a-5a32991604d5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a [2021-11-03 04:59:16,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:59:16,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:59:16,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:59:16,311 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:59:16,312 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:59:16,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2021-11-03 04:59:16,371 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/data/cff0c0b7e/ff9291dd8f314e9b83696dfae4ac2924/FLAG56e1af4a9 [2021-11-03 04:59:17,227 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:59:17,228 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2021-11-03 04:59:17,272 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/data/cff0c0b7e/ff9291dd8f314e9b83696dfae4ac2924/FLAG56e1af4a9 [2021-11-03 04:59:17,711 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/data/cff0c0b7e/ff9291dd8f314e9b83696dfae4ac2924 [2021-11-03 04:59:17,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:59:17,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:59:17,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:59:17,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:59:17,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:59:17,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:59:17" (1/1) ... [2021-11-03 04:59:17,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@792929ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:59:17, skipping insertion in model container [2021-11-03 04:59:17,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:59:17" (1/1) ... [2021-11-03 04:59:17,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:59:17,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:59:18,170 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_e7c4edbb-e620-41d1-bd5a-5a32991604d5/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2021-11-03 04:59:18,177 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_e7c4edbb-e620-41d1-bd5a-5a32991604d5/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2021-11-03 04:59:18,202 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:59:18,208 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:59:19,165 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:19,167 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:19,169 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:19,170 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:19,172 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:19,203 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:19,204 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:19,206 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:19,207 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:19,604 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:59:19,606 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:59:19,607 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:59:19,608 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:59:19,610 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:59:19,611 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:59:19,611 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:59:19,612 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:59:19,613 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:59:19,613 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:59:19,789 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:59:19,913 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:19,914 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:59:20,137 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:59:20,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:59:20,191 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_e7c4edbb-e620-41d1-bd5a-5a32991604d5/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2021-11-03 04:59:20,196 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_e7c4edbb-e620-41d1-bd5a-5a32991604d5/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2021-11-03 04:59:20,199 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:59:20,200 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:59:20,262 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,275 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,275 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,276 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,277 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,283 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,286 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,287 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,288 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,347 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:59:20,348 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:59:20,349 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:59:20,350 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:59:20,352 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:59:20,355 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:59:20,356 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:59:20,356 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:59:20,357 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:59:20,358 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:59:20,397 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:59:20,485 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,485 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:59:20,599 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:59:20,613 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_e7c4edbb-e620-41d1-bd5a-5a32991604d5/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2021-11-03 04:59:20,614 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_e7c4edbb-e620-41d1-bd5a-5a32991604d5/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2021-11-03 04:59:20,615 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:59:20,616 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:59:20,648 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,649 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,649 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,650 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,650 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,656 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,656 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,657 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,657 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,734 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:59:20,750 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:59:20,750 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:59:20,751 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:59:20,752 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:59:20,752 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:59:20,753 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:59:20,753 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:59:20,754 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:59:20,754 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:59:20,773 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:59:20,876 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,876 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:59:20,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:59:21,340 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:59:21,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:59:21 WrapperNode [2021-11-03 04:59:21,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:59:21,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:59:21,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:59:21,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:59:21,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:59:21" (1/1) ... [2021-11-03 04:59:21,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:59:21" (1/1) ... [2021-11-03 04:59:21,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:59:21,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:59:21,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:59:21,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:59:21,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:59:21" (1/1) ... [2021-11-03 04:59:21,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:59:21" (1/1) ... [2021-11-03 04:59:21,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:59:21" (1/1) ... [2021-11-03 04:59:21,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:59:21" (1/1) ... [2021-11-03 04:59:21,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:59:21" (1/1) ... [2021-11-03 04:59:21,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:59:21" (1/1) ... [2021-11-03 04:59:21,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:59:21" (1/1) ... [2021-11-03 04:59:21,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:59:21,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:59:21,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:59:21,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:59:21,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:59:21" (1/1) ... [2021-11-03 04:59:21,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:59:21,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:59:21,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:59:21,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:59:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 04:59:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:59:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:59:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 04:59:21,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 04:59:21,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:59:21,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:59:21,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:59:21,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:59:21,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:59:21,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 04:59:21,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 04:59:21,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:59:21,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:59:21,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 04:59:21,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 04:59:21,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:59:35,895 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:59:35,895 INFO L299 CfgBuilder]: Removed 74 assume(true) statements. [2021-11-03 04:59:35,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:59:35 BoogieIcfgContainer [2021-11-03 04:59:35,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:59:35,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:59:35,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:59:35,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:59:35,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:59:17" (1/3) ... [2021-11-03 04:59:35,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa8fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:59:35, skipping insertion in model container [2021-11-03 04:59:35,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:59:21" (2/3) ... [2021-11-03 04:59:35,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa8fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:59:35, skipping insertion in model container [2021-11-03 04:59:35,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:59:35" (3/3) ... [2021-11-03 04:59:35,905 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_cursor_harness.i [2021-11-03 04:59:35,913 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:59:35,913 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 04:59:35,965 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:59:35,970 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 04:59:35,971 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 04:59:35,995 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 115 states have (on average 1.4521739130434783) internal successors, (167), 120 states have internal predecessors, (167), 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 04:59:36,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 04:59:36,005 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:59:36,007 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] [2021-11-03 04:59:36,008 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:59:36,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:59:36,022 INFO L85 PathProgramCache]: Analyzing trace with hash -924134613, now seen corresponding path program 1 times [2021-11-03 04:59:36,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:59:36,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477239054] [2021-11-03 04:59:36,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:59:36,047 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:59:36,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:59:36,050 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:59:36,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:59:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:59:40,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 1775 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:59:40,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:59:40,568 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 04:59:40,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:59:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:59:40,743 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:59:40,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477239054] [2021-11-03 04:59:40,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477239054] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:59:40,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:59:40,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:59:40,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117179785] [2021-11-03 04:59:40,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:59:40,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:59:40,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:59:40,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:59:40,766 INFO L87 Difference]: Start difference. First operand has 121 states, 115 states have (on average 1.4521739130434783) internal successors, (167), 120 states have internal predecessors, (167), 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 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:59:40,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:59:40,793 INFO L93 Difference]: Finished difference Result 236 states and 326 transitions. [2021-11-03 04:59:40,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:59:40,794 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-03 04:59:40,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:59:40,805 INFO L225 Difference]: With dead ends: 236 [2021-11-03 04:59:40,805 INFO L226 Difference]: Without dead ends: 116 [2021-11-03 04:59:40,808 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 66 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 04:59:40,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-03 04:59:40,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-11-03 04:59:40,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.3333333333333333) internal successors, (148), 115 states have internal predecessors, (148), 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 04:59:40,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 148 transitions. [2021-11-03 04:59:40,874 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 148 transitions. Word has length 34 [2021-11-03 04:59:40,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:59:40,875 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 148 transitions. [2021-11-03 04:59:40,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:59:40,875 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 148 transitions. [2021-11-03 04:59:40,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 04:59:40,877 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:59:40,878 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] [2021-11-03 04:59:40,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:59:41,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:59:41,079 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:59:41,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:59:41,080 INFO L85 PathProgramCache]: Analyzing trace with hash -4215317, now seen corresponding path program 1 times [2021-11-03 04:59:41,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:59:41,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783438267] [2021-11-03 04:59:41,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:59:41,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:59:41,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:59:41,093 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:59:41,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:59:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:59:45,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 1775 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:59:45,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:59:45,806 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 04:59:45,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:59:45,992 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 04:59:45,992 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:59:45,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783438267] [2021-11-03 04:59:45,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783438267] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:59:45,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:59:45,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:59:45,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910070464] [2021-11-03 04:59:45,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:59:45,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:59:45,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:59:45,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:59:45,996 INFO L87 Difference]: Start difference. First operand 116 states and 148 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:59:46,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:59:46,204 INFO L93 Difference]: Finished difference Result 199 states and 255 transitions. [2021-11-03 04:59:46,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:59:46,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2021-11-03 04:59:46,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:59:46,211 INFO L225 Difference]: With dead ends: 199 [2021-11-03 04:59:46,211 INFO L226 Difference]: Without dead ends: 116 [2021-11-03 04:59:46,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 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 04:59:46,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-03 04:59:46,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-11-03 04:59:46,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.3153153153153154) internal successors, (146), 115 states have internal predecessors, (146), 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 04:59:46,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2021-11-03 04:59:46,242 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 146 transitions. Word has length 34 [2021-11-03 04:59:46,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:59:46,243 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-11-03 04:59:46,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 04:59:46,243 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 146 transitions. [2021-11-03 04:59:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-03 04:59:46,246 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:59:46,246 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 04:59:46,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:59:46,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:59:46,462 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:59:46,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:59:46,462 INFO L85 PathProgramCache]: Analyzing trace with hash -2121258970, now seen corresponding path program 1 times [2021-11-03 04:59:46,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:59:46,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291398106] [2021-11-03 04:59:46,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:59:46,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:59:46,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:59:46,469 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:59:46,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:59:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:59:50,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:59:50,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:59:51,130 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 04:59:51,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:59:51,355 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 04:59:51,356 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:59:51,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291398106] [2021-11-03 04:59:51,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291398106] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:59:51,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:59:51,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-03 04:59:51,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149532763] [2021-11-03 04:59:51,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:59:51,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:59:51,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:59:51,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:59:51,359 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 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 04:59:51,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:59:51,839 INFO L93 Difference]: Finished difference Result 248 states and 313 transitions. [2021-11-03 04:59:51,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:59:51,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 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 04:59:51,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:59:51,845 INFO L225 Difference]: With dead ends: 248 [2021-11-03 04:59:51,845 INFO L226 Difference]: Without dead ends: 193 [2021-11-03 04:59:51,846 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:59:51,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-03 04:59:51,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 142. [2021-11-03 04:59:51,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.313868613138686) internal successors, (180), 141 states have internal predecessors, (180), 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 04:59:51,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 180 transitions. [2021-11-03 04:59:51,861 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 180 transitions. Word has length 37 [2021-11-03 04:59:51,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:59:51,861 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 180 transitions. [2021-11-03 04:59:51,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 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 04:59:51,862 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 180 transitions. [2021-11-03 04:59:51,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-03 04:59:51,863 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:59:51,864 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 04:59:51,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:59:52,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:59:52,086 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:59:52,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:59:52,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1356059876, now seen corresponding path program 1 times [2021-11-03 04:59:52,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:59:52,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246706068] [2021-11-03 04:59:52,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:59:52,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:59:52,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:59:52,092 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:59:52,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:59:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:59:56,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:59:56,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:59:57,027 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 04:59:57,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:59:57,479 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 04:59:57,479 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:59:57,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246706068] [2021-11-03 04:59:57,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246706068] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:59:57,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:59:57,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:59:57,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475465211] [2021-11-03 04:59:57,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:59:57,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:59:57,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:59:57,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:59:57,481 INFO L87 Difference]: Start difference. First operand 142 states and 180 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 04:59:57,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:59:57,628 INFO L93 Difference]: Finished difference Result 283 states and 360 transitions. [2021-11-03 04:59:57,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:59:57,631 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 04:59:57,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:59:57,633 INFO L225 Difference]: With dead ends: 283 [2021-11-03 04:59:57,633 INFO L226 Difference]: Without dead ends: 241 [2021-11-03 04:59:57,634 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:59:57,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-03 04:59:57,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 226. [2021-11-03 04:59:57,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 221 states have (on average 1.3167420814479638) internal successors, (291), 225 states have internal predecessors, (291), 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 04:59:57,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 291 transitions. [2021-11-03 04:59:57,669 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 291 transitions. Word has length 37 [2021-11-03 04:59:57,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:59:57,670 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 291 transitions. [2021-11-03 04:59:57,670 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 04:59:57,670 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 291 transitions. [2021-11-03 04:59:57,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-03 04:59:57,681 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:59:57,681 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] [2021-11-03 04:59:57,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:59:57,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:59:57,906 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:59:57,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:59:57,906 INFO L85 PathProgramCache]: Analyzing trace with hash 154674179, now seen corresponding path program 1 times [2021-11-03 04:59:57,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:59:57,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584030403] [2021-11-03 04:59:57,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:59:57,912 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:59:57,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:59:57,916 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:59:57,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:00:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:00:02,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-03 05:00:02,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:00:03,487 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 05:00:03,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:00:15,522 WARN L207 SmtUtils]: Spent 10.88 s on a formula simplification. DAG size of input: 523 DAG size of output: 269 [2021-11-03 05:00:15,532 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-03 05:00:15,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 128 treesize of output 771 [2021-11-03 05:11:19,215 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 05:11:19,215 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:11:19,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584030403] [2021-11-03 05:11:19,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584030403] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:11:19,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:11:19,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 17 [2021-11-03 05:11:19,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577109071] [2021-11-03 05:11:19,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 05:11:19,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:11:19,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 05:11:19,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:11:19,219 INFO L87 Difference]: Start difference. First operand 226 states and 291 transitions. Second operand has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 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 05:11:29,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:11:29,144 INFO L93 Difference]: Finished difference Result 686 states and 865 transitions. [2021-11-03 05:11:29,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-03 05:11:29,146 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 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 38 [2021-11-03 05:11:29,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:11:29,150 INFO L225 Difference]: With dead ends: 686 [2021-11-03 05:11:29,150 INFO L226 Difference]: Without dead ends: 547 [2021-11-03 05:11:29,153 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=318, Invalid=1242, Unknown=0, NotChecked=0, Total=1560 [2021-11-03 05:11:29,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-11-03 05:11:29,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 311. [2021-11-03 05:11:29,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 306 states have (on average 1.3104575163398693) internal successors, (401), 310 states have internal predecessors, (401), 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 05:11:29,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 401 transitions. [2021-11-03 05:11:29,183 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 401 transitions. Word has length 38 [2021-11-03 05:11:29,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:11:29,184 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 401 transitions. [2021-11-03 05:11:29,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 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 05:11:29,184 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 401 transitions. [2021-11-03 05:11:29,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 05:11:29,186 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:11:29,187 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] [2021-11-03 05:11:29,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:11:29,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:11:29,406 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:11:29,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:11:29,407 INFO L85 PathProgramCache]: Analyzing trace with hash 489246643, now seen corresponding path program 1 times [2021-11-03 05:11:29,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:11:29,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384586519] [2021-11-03 05:11:29,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:11:29,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:11:29,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:11:29,413 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:11:29,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:11:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:11:33,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 1801 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-03 05:11:33,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:11:33,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-03 05:11:34,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-03 05:11:34,560 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 05:11:34,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:11:34,973 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 38 treesize of output 32 [2021-11-03 05:11:35,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:11:35,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:11:35,316 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 05:11:35,317 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:11:35,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384586519] [2021-11-03 05:11:35,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384586519] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:11:35,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:11:35,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 16 [2021-11-03 05:11:35,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622430953] [2021-11-03 05:11:35,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 05:11:35,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:11:35,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 05:11:35,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:11:35,320 INFO L87 Difference]: Start difference. First operand 311 states and 401 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 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 05:11:44,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:11:44,652 INFO L93 Difference]: Finished difference Result 946 states and 1172 transitions. [2021-11-03 05:11:44,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-03 05:11:44,653 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 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 46 [2021-11-03 05:11:44,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:11:44,656 INFO L225 Difference]: With dead ends: 946 [2021-11-03 05:11:44,656 INFO L226 Difference]: Without dead ends: 676 [2021-11-03 05:11:44,658 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=352, Invalid=1370, Unknown=0, NotChecked=0, Total=1722 [2021-11-03 05:11:44,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-11-03 05:11:44,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 329. [2021-11-03 05:11:44,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 324 states have (on average 1.2777777777777777) internal successors, (414), 328 states have internal predecessors, (414), 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 05:11:44,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 414 transitions. [2021-11-03 05:11:44,686 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 414 transitions. Word has length 46 [2021-11-03 05:11:44,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:11:44,686 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 414 transitions. [2021-11-03 05:11:44,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 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 05:11:44,687 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 414 transitions. [2021-11-03 05:11:44,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-03 05:11:44,688 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:11:44,689 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] [2021-11-03 05:11:44,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:11:44,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:11:44,902 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:11:44,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:11:44,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1364595712, now seen corresponding path program 1 times [2021-11-03 05:11:44,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:11:44,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379241177] [2021-11-03 05:11:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:11:44,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:11:44,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:11:44,906 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:11:44,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:11:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:11:49,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 05:11:49,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:11:49,543 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 05:11:49,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:11:49,729 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 05:11:49,730 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:11:49,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379241177] [2021-11-03 05:11:49,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379241177] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:11:49,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:11:49,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2021-11-03 05:11:49,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276660075] [2021-11-03 05:11:49,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 05:11:49,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:11:49,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 05:11:49,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:11:49,731 INFO L87 Difference]: Start difference. First operand 329 states and 414 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:51,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:11:51,295 INFO L93 Difference]: Finished difference Result 509 states and 639 transitions. [2021-11-03 05:11:51,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 05:11:51,298 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-03 05:11:51,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:11:51,300 INFO L225 Difference]: With dead ends: 509 [2021-11-03 05:11:51,301 INFO L226 Difference]: Without dead ends: 346 [2021-11-03 05:11:51,302 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:11:51,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-11-03 05:11:51,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 329. [2021-11-03 05:11:51,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 324 states have (on average 1.2654320987654322) internal successors, (410), 328 states have internal predecessors, (410), 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 05:11:51,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 410 transitions. [2021-11-03 05:11:51,323 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 410 transitions. Word has length 48 [2021-11-03 05:11:51,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:11:51,323 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 410 transitions. [2021-11-03 05:11:51,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:51,324 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 410 transitions. [2021-11-03 05:11:51,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 05:11:51,325 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:11:51,326 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, 1, 1] [2021-11-03 05:11:51,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:11:51,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:11:51,538 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:11:51,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:11:51,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1673398174, now seen corresponding path program 1 times [2021-11-03 05:11:51,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:11:51,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963482044] [2021-11-03 05:11:51,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:11:51,542 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:11:51,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:11:51,543 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:11:51,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:11:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:11:56,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 1819 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:11:56,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:11:56,858 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 05:11:56,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:11:57,226 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 05:11:57,226 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:11:57,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963482044] [2021-11-03 05:11:57,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963482044] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:11:57,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:11:57,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-03 05:11:57,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213109111] [2021-11-03 05:11:57,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:11:57,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:11:57,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:11:57,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:11:57,229 INFO L87 Difference]: Start difference. First operand 329 states and 410 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 05:12:01,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:12:01,213 INFO L93 Difference]: Finished difference Result 685 states and 848 transitions. [2021-11-03 05:12:01,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:12:01,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 51 [2021-11-03 05:12:01,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:12:01,218 INFO L225 Difference]: With dead ends: 685 [2021-11-03 05:12:01,218 INFO L226 Difference]: Without dead ends: 449 [2021-11-03 05:12:01,219 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:12:01,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-11-03 05:12:01,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 329. [2021-11-03 05:12:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 324 states have (on average 1.2376543209876543) internal successors, (401), 328 states have internal predecessors, (401), 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 05:12:01,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 401 transitions. [2021-11-03 05:12:01,253 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 401 transitions. Word has length 51 [2021-11-03 05:12:01,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:12:01,256 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 401 transitions. [2021-11-03 05:12:01,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 05:12:01,260 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 401 transitions. [2021-11-03 05:12:01,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 05:12:01,262 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:12:01,262 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, 1, 1] [2021-11-03 05:12:01,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:12:01,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:12:01,474 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:12:01,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:12:01,474 INFO L85 PathProgramCache]: Analyzing trace with hash 377585824, now seen corresponding path program 1 times [2021-11-03 05:12:01,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:12:01,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831418098] [2021-11-03 05:12:01,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:12:01,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:12:01,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:12:01,479 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:12:01,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:12:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:12:06,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 1822 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-03 05:12:06,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:12:06,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-03 05:12:07,176 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 05:12:07,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:12:07,647 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 40 treesize of output 34 [2021-11-03 05:12:08,014 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 05:12:08,015 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:12:08,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831418098] [2021-11-03 05:12:08,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831418098] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:12:08,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:12:08,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-11-03 05:12:08,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185545361] [2021-11-03 05:12:08,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 05:12:08,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:12:08,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 05:12:08,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:12:08,017 INFO L87 Difference]: Start difference. First operand 329 states and 401 transitions. Second operand has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 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 05:12:16,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:12:16,782 INFO L93 Difference]: Finished difference Result 520 states and 633 transitions. [2021-11-03 05:12:16,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 05:12:16,785 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 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 51 [2021-11-03 05:12:16,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:12:16,792 INFO L225 Difference]: With dead ends: 520 [2021-11-03 05:12:16,792 INFO L226 Difference]: Without dead ends: 513 [2021-11-03 05:12:16,793 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-11-03 05:12:16,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-11-03 05:12:16,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 329. [2021-11-03 05:12:16,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 324 states have (on average 1.2345679012345678) internal successors, (400), 328 states have internal predecessors, (400), 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 05:12:16,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 400 transitions. [2021-11-03 05:12:16,824 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 400 transitions. Word has length 51 [2021-11-03 05:12:16,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:12:16,825 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 400 transitions. [2021-11-03 05:12:16,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 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 05:12:16,825 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 400 transitions. [2021-11-03 05:12:16,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 05:12:16,827 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:12:16,828 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, 1, 1] [2021-11-03 05:12:16,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:12:17,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:12:17,042 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:12:17,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:12:17,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1057644194, now seen corresponding path program 1 times [2021-11-03 05:12:17,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:12:17,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650313481] [2021-11-03 05:12:17,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:12:17,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:12:17,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:12:17,050 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:12:17,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c4edbb-e620-41d1-bd5a-5a32991604d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 05:12:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:12:21,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 1819 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-03 05:12:21,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:12:23,091 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 05:12:23,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:12:41,615 WARN L207 SmtUtils]: Spent 17.09 s on a formula simplification. DAG size of input: 523 DAG size of output: 269 [2021-11-03 05:12:41,618 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-03 05:12:41,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 191 treesize of output 788