./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_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_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/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_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/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_154fbcf8-d47b-4692-a24b-714afec953d7/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 97e90b5866c6e9df01c589395fdbbe46254bc553e4330f2a669b393b022bbd71 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:08:37,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:08:37,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:08:37,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:08:37,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:08:37,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:08:37,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:08:37,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:08:37,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:08:37,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:08:37,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:08:37,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:08:37,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:08:37,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:08:37,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:08:37,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:08:37,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:08:37,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:08:37,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:08:37,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:08:37,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:08:37,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:08:37,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:08:37,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:08:37,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:08:37,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:08:37,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:08:37,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:08:37,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:08:37,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:08:37,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:08:37,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:08:37,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:08:37,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:08:37,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:08:37,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:08:37,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:08:37,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:08:37,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:08:37,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:08:37,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:08:37,782 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:08:37,830 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:08:37,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:08:37,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:08:37,832 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:08:37,832 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:08:37,832 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:08:37,833 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:08:37,833 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:08:37,833 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:08:37,833 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:08:37,834 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:08:37,835 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:08:37,835 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:08:37,835 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:08:37,835 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:08:37,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:08:37,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:08:37,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:08:37,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:08:37,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:08:37,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:08:37,837 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:08:37,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:08:37,837 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:08:37,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:08:37,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:08:37,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:08:37,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:08:37,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:08:37,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:08:37,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:08:37,841 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:08:37,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:08:37,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:08:37,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:08:37,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:08:37,842 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_154fbcf8-d47b-4692-a24b-714afec953d7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97e90b5866c6e9df01c589395fdbbe46254bc553e4330f2a669b393b022bbd71 [2021-11-03 04:08:38,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:08:38,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:08:38,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:08:38,125 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:08:38,126 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:08:38,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2021-11-03 04:08:38,216 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/data/36c92f232/2330c10b8f934f98b507bf86e811d319/FLAG925849281 [2021-11-03 04:08:39,077 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:08:39,078 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2021-11-03 04:08:39,131 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/data/36c92f232/2330c10b8f934f98b507bf86e811d319/FLAG925849281 [2021-11-03 04:08:39,540 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/data/36c92f232/2330c10b8f934f98b507bf86e811d319 [2021-11-03 04:08:39,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:08:39,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:08:39,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:08:39,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:08:39,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:08:39,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:08:39" (1/1) ... [2021-11-03 04:08:39,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4531db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:39, skipping insertion in model container [2021-11-03 04:08:39,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:08:39" (1/1) ... [2021-11-03 04:08:39,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:08:39,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:08:40,019 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_154fbcf8-d47b-4692-a24b-714afec953d7/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2021-11-03 04:08:40,027 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_154fbcf8-d47b-4692-a24b-714afec953d7/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2021-11-03 04:08:40,052 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:08:40,058 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:08:41,144 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:41,145 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:41,145 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:41,147 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:41,149 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:41,192 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:41,193 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:41,195 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:41,195 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:41,197 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:41,198 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:41,198 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:41,199 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:41,705 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:08:41,706 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:08:41,707 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:08:41,709 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:08:41,710 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:08:41,711 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:08:41,711 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:08:41,712 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:08:41,713 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:08:41,713 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:08:41,917 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:08:41,947 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.result.ExpressionResultTransformer.transformDispatchDecaySwitchRexBoolToInt(ExpressionResultTransformer.java:177) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallGivenNameAndArguments(FunctionHandler.java:676) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallExpression(FunctionHandler.java:509) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1437) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1381) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 04:08:41,958 INFO L168 Benchmark]: Toolchain (without parser) took 2412.29 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 58.4 MB in the beginning and 85.5 MB in the end (delta: -27.1 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:08:41,960 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory was 75.3 MB in the beginning and 75.3 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:08:41,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2409.83 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 58.4 MB in the beginning and 85.5 MB in the end (delta: -27.1 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:08:41,965 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory was 75.3 MB in the beginning and 75.3 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2409.83 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 58.4 MB in the beginning and 85.5 MB in the end (delta: -27.1 MB). Peak memory consumption was 14.6 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_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/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_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/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_154fbcf8-d47b-4692-a24b-714afec953d7/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 97e90b5866c6e9df01c589395fdbbe46254bc553e4330f2a669b393b022bbd71 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:08:44,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:08:44,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:08:44,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:08:44,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:08:44,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:08:44,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:08:44,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:08:44,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:08:44,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:08:44,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:08:44,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:08:44,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:08:44,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:08:44,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:08:44,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:08:44,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:08:44,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:08:44,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:08:44,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:08:44,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:08:44,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:08:44,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:08:44,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:08:44,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:08:44,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:08:44,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:08:44,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:08:44,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:08:44,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:08:44,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:08:44,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:08:44,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:08:44,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:08:44,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:08:44,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:08:44,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:08:44,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:08:44,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:08:44,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:08:44,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:08:44,433 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:08:44,478 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:08:44,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:08:44,480 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:08:44,480 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:08:44,480 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:08:44,481 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:08:44,481 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:08:44,481 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:08:44,482 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:08:44,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:08:44,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:08:44,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:08:44,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:08:44,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:08:44,485 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:08:44,485 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:08:44,485 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:08:44,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:08:44,486 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:08:44,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:08:44,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:08:44,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:08:44,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:08:44,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:08:44,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:08:44,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:08:44,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:08:44,488 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:08:44,488 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:08:44,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:08:44,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:08:44,488 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:08:44,489 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_154fbcf8-d47b-4692-a24b-714afec953d7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97e90b5866c6e9df01c589395fdbbe46254bc553e4330f2a669b393b022bbd71 [2021-11-03 04:08:44,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:08:44,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:08:44,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:08:44,886 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:08:44,887 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:08:44,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2021-11-03 04:08:44,950 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/data/a90bd7302/424dc16e75614a6aac3d642417c0a2cd/FLAG32df1308b [2021-11-03 04:08:45,859 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:08:45,859 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2021-11-03 04:08:45,916 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/data/a90bd7302/424dc16e75614a6aac3d642417c0a2cd/FLAG32df1308b [2021-11-03 04:08:46,297 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/data/a90bd7302/424dc16e75614a6aac3d642417c0a2cd [2021-11-03 04:08:46,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:08:46,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:08:46,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:08:46,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:08:46,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:08:46,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:08:46" (1/1) ... [2021-11-03 04:08:46,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48f5114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:46, skipping insertion in model container [2021-11-03 04:08:46,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:08:46" (1/1) ... [2021-11-03 04:08:46,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:08:46,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:08:46,833 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_154fbcf8-d47b-4692-a24b-714afec953d7/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2021-11-03 04:08:46,843 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_154fbcf8-d47b-4692-a24b-714afec953d7/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2021-11-03 04:08:46,875 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:08:46,891 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:08:47,961 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:47,969 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:47,970 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:47,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:47,972 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:47,996 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:47,998 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:48,001 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:48,002 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:48,004 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:48,006 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:48,007 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:48,007 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:48,555 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:08:48,557 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:08:48,558 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:08:48,559 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:08:48,560 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:08:48,561 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:08:48,562 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:08:48,562 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:08:48,563 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:08:48,564 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:08:48,798 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:08:49,240 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,242 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,273 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,274 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,281 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,284 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,304 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,306 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,307 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,311 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,312 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,312 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,313 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:08:49,447 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:08:49,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:08:49,516 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_154fbcf8-d47b-4692-a24b-714afec953d7/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2021-11-03 04:08:49,517 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_154fbcf8-d47b-4692-a24b-714afec953d7/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2021-11-03 04:08:49,518 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:08:49,519 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:08:49,581 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,582 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,582 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,582 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,583 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,595 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,596 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,597 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,597 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,598 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,599 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,599 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,600 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,635 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:08:49,636 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:08:49,638 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:08:49,639 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:08:49,639 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:08:49,640 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:08:49,641 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:08:49,641 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:08:49,642 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:08:49,642 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:08:49,671 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:08:49,802 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,802 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,810 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,811 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,814 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,815 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,829 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,829 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,830 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,830 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,831 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,831 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,832 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:08:49,901 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:08:49,926 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_154fbcf8-d47b-4692-a24b-714afec953d7/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2021-11-03 04:08:49,926 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_154fbcf8-d47b-4692-a24b-714afec953d7/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2021-11-03 04:08:49,928 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:08:49,929 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:08:49,983 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,983 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,984 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,984 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,985 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,991 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,992 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,994 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,994 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,995 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,996 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,996 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:49,996 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:50,026 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:08:50,027 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:08:50,029 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:08:50,029 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:08:50,030 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:08:50,030 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:08:50,031 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:08:50,031 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:08:50,032 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:08:50,033 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:08:50,053 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:08:50,296 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:50,296 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:50,311 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:50,312 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:50,315 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:50,330 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:50,340 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:50,341 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:50,342 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:50,342 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:50,342 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:50,343 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:50,343 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:08:50,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:08:50,780 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:08:50,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:50 WrapperNode [2021-11-03 04:08:50,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:08:50,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:08:50,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:08:50,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:08:50,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:50" (1/1) ... [2021-11-03 04:08:50,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:50" (1/1) ... [2021-11-03 04:08:51,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:08:51,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:08:51,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:08:51,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:08:51,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:50" (1/1) ... [2021-11-03 04:08:51,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:50" (1/1) ... [2021-11-03 04:08:51,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:50" (1/1) ... [2021-11-03 04:08:51,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:50" (1/1) ... [2021-11-03 04:08:51,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:50" (1/1) ... [2021-11-03 04:08:51,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:50" (1/1) ... [2021-11-03 04:08:51,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:50" (1/1) ... [2021-11-03 04:08:51,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:08:51,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:08:51,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:08:51,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:08:51,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:50" (1/1) ... [2021-11-03 04:08:51,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:08:51,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:08:51,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:08:51,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:08:51,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-03 04:08:51,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:08:51,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:08:51,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:08:51,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:08:51,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 04:08:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-03 04:08:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:08:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-03 04:08:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:08:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-03 04:08:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:08:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:08:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 04:08:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 04:08:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:08:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 04:08:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:08:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:08:51,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2021-11-03 04:09:11,275 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##201: assume !true; [2021-11-03 04:09:11,276 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##269: assume !true; [2021-11-03 04:09:11,276 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##284: assume !true; [2021-11-03 04:09:11,276 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##239: assume !true; [2021-11-03 04:09:11,276 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume !true; [2021-11-03 04:09:11,276 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume !true; [2021-11-03 04:09:11,277 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##130: assume !true; [2021-11-03 04:09:11,290 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:09:11,290 INFO L299 CfgBuilder]: Removed 312 assume(true) statements. [2021-11-03 04:09:11,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:11 BoogieIcfgContainer [2021-11-03 04:09:11,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:09:11,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:09:11,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:09:11,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:09:11,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:08:46" (1/3) ... [2021-11-03 04:09:11,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e459fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:11, skipping insertion in model container [2021-11-03 04:09:11,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:50" (2/3) ... [2021-11-03 04:09:11,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e459fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:11, skipping insertion in model container [2021-11-03 04:09:11,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:11" (3/3) ... [2021-11-03 04:09:11,302 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_remove_harness.i [2021-11-03 04:09:11,308 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:09:11,308 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-03 04:09:11,361 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:09:11,366 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:09:11,367 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-03 04:09:11,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 341 states, 323 states have (on average 1.4551083591331269) internal successors, (470), 340 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:11,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 04:09:11,396 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:09:11,397 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:09:11,398 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:09:11,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:09:11,404 INFO L85 PathProgramCache]: Analyzing trace with hash -2037186818, now seen corresponding path program 1 times [2021-11-03 04:09:11,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:09:11,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313501493] [2021-11-03 04:09:11,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:09:11,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:09:11,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:09:11,435 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:09:11,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:09:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:09:15,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 1707 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:09:15,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:09:16,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:16,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:09:16,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:16,504 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:09:16,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313501493] [2021-11-03 04:09:16,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313501493] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:09:16,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:09:16,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:09:16,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621418600] [2021-11-03 04:09:16,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:09:16,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:09:16,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:09:16,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:09:16,536 INFO L87 Difference]: Start difference. First operand has 341 states, 323 states have (on average 1.4551083591331269) internal successors, (470), 340 states have internal predecessors, (470), 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 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:16,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:09:16,615 INFO L93 Difference]: Finished difference Result 677 states and 934 transitions. [2021-11-03 04:09:16,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:09:16,616 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 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 74 [2021-11-03 04:09:16,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:09:16,636 INFO L225 Difference]: With dead ends: 677 [2021-11-03 04:09:16,637 INFO L226 Difference]: Without dead ends: 333 [2021-11-03 04:09:16,644 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:09:16,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-03 04:09:16,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-11-03 04:09:16,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 316 states have (on average 1.2626582278481013) internal successors, (399), 332 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:16,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 399 transitions. [2021-11-03 04:09:16,723 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 399 transitions. Word has length 74 [2021-11-03 04:09:16,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:09:16,723 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 399 transitions. [2021-11-03 04:09:16,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:16,724 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 399 transitions. [2021-11-03 04:09:16,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 04:09:16,729 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:09:16,729 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:09:16,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:09:16,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:09:16,930 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:09:16,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:09:16,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1272180544, now seen corresponding path program 1 times [2021-11-03 04:09:16,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:09:16,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044176906] [2021-11-03 04:09:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:09:16,936 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:09:16,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:09:16,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:09:16,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:09:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:09:21,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 1707 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:09:21,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:09:21,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:21,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:09:21,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:21,927 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:09:21,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044176906] [2021-11-03 04:09:21,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044176906] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:09:21,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:09:21,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:09:21,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763428029] [2021-11-03 04:09:21,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:09:21,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:09:21,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:09:21,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:09:21,931 INFO L87 Difference]: Start difference. First operand 333 states and 399 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:22,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:09:22,108 INFO L93 Difference]: Finished difference Result 965 states and 1158 transitions. [2021-11-03 04:09:22,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:09:22,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 74 [2021-11-03 04:09:22,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:09:22,112 INFO L225 Difference]: With dead ends: 965 [2021-11-03 04:09:22,113 INFO L226 Difference]: Without dead ends: 654 [2021-11-03 04:09:22,114 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:09:22,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-11-03 04:09:22,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 336. [2021-11-03 04:09:22,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 319 states have (on average 1.2601880877742946) internal successors, (402), 335 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:22,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 402 transitions. [2021-11-03 04:09:22,130 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 402 transitions. Word has length 74 [2021-11-03 04:09:22,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:09:22,130 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 402 transitions. [2021-11-03 04:09:22,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:22,131 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 402 transitions. [2021-11-03 04:09:22,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 04:09:22,132 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:09:22,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:09:22,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:09:22,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:09:22,354 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:09:22,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:09:22,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1002787932, now seen corresponding path program 1 times [2021-11-03 04:09:22,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:09:22,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112535793] [2021-11-03 04:09:22,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:09:22,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:09:22,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:09:22,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:09:22,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:09:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:09:26,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 1710 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:09:26,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:09:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:26,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:09:27,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:27,344 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:09:27,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112535793] [2021-11-03 04:09:27,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112535793] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:09:27,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:09:27,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:09:27,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788998986] [2021-11-03 04:09:27,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:09:27,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:09:27,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:09:27,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:09:27,346 INFO L87 Difference]: Start difference. First operand 336 states and 402 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:27,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:09:27,708 INFO L93 Difference]: Finished difference Result 647 states and 775 transitions. [2021-11-03 04:09:27,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:09:27,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 76 [2021-11-03 04:09:27,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:09:27,711 INFO L225 Difference]: With dead ends: 647 [2021-11-03 04:09:27,711 INFO L226 Difference]: Without dead ends: 336 [2021-11-03 04:09:27,712 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:09:27,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-11-03 04:09:27,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 333. [2021-11-03 04:09:27,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 316 states have (on average 1.2563291139240507) internal successors, (397), 332 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:27,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 397 transitions. [2021-11-03 04:09:27,722 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 397 transitions. Word has length 76 [2021-11-03 04:09:27,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:09:27,722 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 397 transitions. [2021-11-03 04:09:27,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:27,722 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 397 transitions. [2021-11-03 04:09:27,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 04:09:27,724 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:09:27,724 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:09:27,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:09:27,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:09:27,946 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:09:27,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:09:27,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1920942895, now seen corresponding path program 1 times [2021-11-03 04:09:27,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:09:27,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941003983] [2021-11-03 04:09:27,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:09:27,950 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:09:27,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:09:27,950 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:09:27,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:09:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:09:32,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 1743 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 04:09:32,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:09:32,802 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 16 treesize of output 12 [2021-11-03 04:09:33,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:33,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:09:33,446 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 30 treesize of output 26 [2021-11-03 04:09:33,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:33,881 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:09:33,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941003983] [2021-11-03 04:09:33,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941003983] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:09:33,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:09:33,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-11-03 04:09:33,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411687375] [2021-11-03 04:09:33,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:09:33,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:09:33,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:09:33,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:09:33,883 INFO L87 Difference]: Start difference. First operand 333 states and 397 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:45,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:09:45,227 INFO L93 Difference]: Finished difference Result 637 states and 762 transitions. [2021-11-03 04:09:45,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:09:45,227 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 79 [2021-11-03 04:09:45,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:09:45,230 INFO L225 Difference]: With dead ends: 637 [2021-11-03 04:09:45,230 INFO L226 Difference]: Without dead ends: 339 [2021-11-03 04:09:45,231 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:09:45,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-11-03 04:09:45,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2021-11-03 04:09:45,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 318 states have (on average 1.2547169811320755) internal successors, (399), 334 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:45,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 399 transitions. [2021-11-03 04:09:45,243 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 399 transitions. Word has length 79 [2021-11-03 04:09:45,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:09:45,243 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 399 transitions. [2021-11-03 04:09:45,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:45,244 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 399 transitions. [2021-11-03 04:09:45,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 04:09:45,245 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:09:45,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:09:45,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:09:45,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:09:45,458 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:09:45,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:09:45,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1498005395, now seen corresponding path program 1 times [2021-11-03 04:09:45,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:09:45,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126315145] [2021-11-03 04:09:45,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:09:45,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:09:45,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:09:45,465 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:09:45,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:09:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:09:49,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:09:49,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:09:50,215 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 04:09:50,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:09:50,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:50,651 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:09:50,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126315145] [2021-11-03 04:09:50,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126315145] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:09:50,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:09:50,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:09:50,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701933061] [2021-11-03 04:09:50,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:09:50,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:09:50,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:09:50,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:09:50,653 INFO L87 Difference]: Start difference. First operand 335 states and 399 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:53,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:09:53,145 INFO L93 Difference]: Finished difference Result 636 states and 760 transitions. [2021-11-03 04:09:53,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:09:53,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 79 [2021-11-03 04:09:53,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:09:53,148 INFO L225 Difference]: With dead ends: 636 [2021-11-03 04:09:53,148 INFO L226 Difference]: Without dead ends: 333 [2021-11-03 04:09:53,149 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:09:53,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-03 04:09:53,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-11-03 04:09:53,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 316 states have (on average 1.25) internal successors, (395), 332 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:53,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 395 transitions. [2021-11-03 04:09:53,162 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 395 transitions. Word has length 79 [2021-11-03 04:09:53,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:09:53,163 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 395 transitions. [2021-11-03 04:09:53,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:53,163 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 395 transitions. [2021-11-03 04:09:53,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 04:09:53,165 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:09:53,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:09:53,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:09:53,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:09:53,378 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:09:53,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:09:53,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1869587508, now seen corresponding path program 1 times [2021-11-03 04:09:53,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:09:53,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94678929] [2021-11-03 04:09:53,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:09:53,382 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:09:53,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:09:53,383 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:09:53,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:09:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:09:57,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 1754 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 04:09:57,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:09:58,263 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 16 treesize of output 12 [2021-11-03 04:09:58,378 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 16 treesize of output 8 [2021-11-03 04:09:58,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:58,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:09:58,942 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 30 treesize of output 26 [2021-11-03 04:09:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:59,388 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:09:59,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94678929] [2021-11-03 04:09:59,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94678929] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:09:59,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:09:59,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-03 04:09:59,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037155883] [2021-11-03 04:09:59,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:09:59,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:09:59,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:09:59,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:09:59,390 INFO L87 Difference]: Start difference. First operand 333 states and 395 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:10,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:10,037 INFO L93 Difference]: Finished difference Result 632 states and 753 transitions. [2021-11-03 04:10:10,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:10:10,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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 81 [2021-11-03 04:10:10,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:10,046 INFO L225 Difference]: With dead ends: 632 [2021-11-03 04:10:10,046 INFO L226 Difference]: Without dead ends: 333 [2021-11-03 04:10:10,047 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:10:10,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-03 04:10:10,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-11-03 04:10:10,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 316 states have (on average 1.2468354430379747) internal successors, (394), 332 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:10,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 394 transitions. [2021-11-03 04:10:10,058 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 394 transitions. Word has length 81 [2021-11-03 04:10:10,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:10,058 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 394 transitions. [2021-11-03 04:10:10,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:10,059 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 394 transitions. [2021-11-03 04:10:10,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 04:10:10,060 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:10,060 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:10:10,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:10,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:10:10,274 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:10:10,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:10,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2025362653, now seen corresponding path program 1 times [2021-11-03 04:10:10,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:10,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324631082] [2021-11-03 04:10:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:10,277 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:10,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:10,281 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:10,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:10:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:14,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 1767 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:10:14,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:15,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:15,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:15,403 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:10:15,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324631082] [2021-11-03 04:10:15,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324631082] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:15,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:15,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:10:15,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820720680] [2021-11-03 04:10:15,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:10:15,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:10:15,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:10:15,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:10:15,406 INFO L87 Difference]: Start difference. First operand 333 states and 394 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:20,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:20,104 INFO L93 Difference]: Finished difference Result 661 states and 779 transitions. [2021-11-03 04:10:20,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:10:20,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 82 [2021-11-03 04:10:20,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:20,108 INFO L225 Difference]: With dead ends: 661 [2021-11-03 04:10:20,108 INFO L226 Difference]: Without dead ends: 386 [2021-11-03 04:10:20,109 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:10:20,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-11-03 04:10:20,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 333. [2021-11-03 04:10:20,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 316 states have (on average 1.240506329113924) internal successors, (392), 332 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:20,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 392 transitions. [2021-11-03 04:10:20,124 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 392 transitions. Word has length 82 [2021-11-03 04:10:20,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:20,125 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 392 transitions. [2021-11-03 04:10:20,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:20,125 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 392 transitions. [2021-11-03 04:10:20,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 04:10:20,126 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:20,127 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:10:20,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:20,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:10:20,342 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:10:20,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:20,343 INFO L85 PathProgramCache]: Analyzing trace with hash -501909251, now seen corresponding path program 1 times [2021-11-03 04:10:20,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:20,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53150301] [2021-11-03 04:10:20,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:20,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:20,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:20,347 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:20,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:10:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:25,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1789 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 04:10:25,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:25,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-03 04:10:25,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-03 04:10:25,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:25,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:26,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:26,384 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:10:26,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53150301] [2021-11-03 04:10:26,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53150301] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:26,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:26,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-03 04:10:26,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919826604] [2021-11-03 04:10:26,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:10:26,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:10:26,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:10:26,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:10:26,386 INFO L87 Difference]: Start difference. First operand 333 states and 392 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:58,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:58,109 INFO L93 Difference]: Finished difference Result 872 states and 1032 transitions. [2021-11-03 04:10:58,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 04:10:58,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 86 [2021-11-03 04:10:58,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:58,115 INFO L225 Difference]: With dead ends: 872 [2021-11-03 04:10:58,115 INFO L226 Difference]: Without dead ends: 599 [2021-11-03 04:10:58,116 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:10:58,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-11-03 04:10:58,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 333. [2021-11-03 04:10:58,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 316 states have (on average 1.2246835443037976) internal successors, (387), 332 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:58,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 387 transitions. [2021-11-03 04:10:58,136 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 387 transitions. Word has length 86 [2021-11-03 04:10:58,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:58,137 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 387 transitions. [2021-11-03 04:10:58,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:58,137 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 387 transitions. [2021-11-03 04:10:58,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 04:10:58,138 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:58,139 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:10:58,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:58,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:10:58,354 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:10:58,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:58,354 INFO L85 PathProgramCache]: Analyzing trace with hash 215845281, now seen corresponding path program 1 times [2021-11-03 04:10:58,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:58,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873812110] [2021-11-03 04:10:58,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:58,359 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:58,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:58,362 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:58,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:11:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:03,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 1815 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-03 04:11:03,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:11:04,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-03 04:11:04,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-03 04:11:04,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:04,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:11:05,033 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-03 04:11:05,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-11-03 04:11:05,049 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-03 04:11:05,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-03 04:11:05,180 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 04:11:05,180 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:11:05,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873812110] [2021-11-03 04:11:05,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873812110] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:05,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:05,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-03 04:11:05,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308074503] [2021-11-03 04:11:05,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 04:11:05,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:11:05,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 04:11:05,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:11:05,183 INFO L87 Difference]: Start difference. First operand 333 states and 387 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 04:11:28,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:28,768 INFO L93 Difference]: Finished difference Result 886 states and 1029 transitions. [2021-11-03 04:11:28,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-03 04:11:28,769 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 88 [2021-11-03 04:11:28,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:28,774 INFO L225 Difference]: With dead ends: 886 [2021-11-03 04:11:28,774 INFO L226 Difference]: Without dead ends: 640 [2021-11-03 04:11:28,775 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=255, Invalid=615, Unknown=0, NotChecked=0, Total=870 [2021-11-03 04:11:28,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-11-03 04:11:28,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 333. [2021-11-03 04:11:28,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 316 states have (on average 1.2215189873417722) internal successors, (386), 332 states have internal predecessors, (386), 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 04:11:28,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 386 transitions. [2021-11-03 04:11:28,798 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 386 transitions. Word has length 88 [2021-11-03 04:11:28,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:28,798 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 386 transitions. [2021-11-03 04:11:28,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 04:11:28,799 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 386 transitions. [2021-11-03 04:11:28,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-03 04:11:28,799 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:28,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:11:28,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-03 04:11:29,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:11:29,006 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:11:29,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:29,006 INFO L85 PathProgramCache]: Analyzing trace with hash -333291741, now seen corresponding path program 1 times [2021-11-03 04:11:29,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:11:29,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109134191] [2021-11-03 04:11:29,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:29,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:11:29,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:11:29,011 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:11:29,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:11:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:34,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 04:11:34,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:11:34,450 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 04:11:34,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:11:34,664 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 04:11:34,664 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:11:34,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109134191] [2021-11-03 04:11:34,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109134191] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:34,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:34,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:11:34,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856255164] [2021-11-03 04:11:34,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:11:34,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:11:34,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:11:34,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:11:34,668 INFO L87 Difference]: Start difference. First operand 333 states and 386 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 04:11:35,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:35,054 INFO L93 Difference]: Finished difference Result 417 states and 500 transitions. [2021-11-03 04:11:35,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:11:35,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 89 [2021-11-03 04:11:35,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:35,057 INFO L225 Difference]: With dead ends: 417 [2021-11-03 04:11:35,057 INFO L226 Difference]: Without dead ends: 411 [2021-11-03 04:11:35,058 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:11:35,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-11-03 04:11:35,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 327. [2021-11-03 04:11:35,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 313 states have (on average 1.2140575079872205) internal successors, (380), 326 states have internal predecessors, (380), 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 04:11:35,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 380 transitions. [2021-11-03 04:11:35,078 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 380 transitions. Word has length 89 [2021-11-03 04:11:35,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:35,078 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 380 transitions. [2021-11-03 04:11:35,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 04:11:35,078 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 380 transitions. [2021-11-03 04:11:35,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 04:11:35,079 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:35,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:11:35,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-03 04:11:35,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:11:35,286 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:11:35,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:35,286 INFO L85 PathProgramCache]: Analyzing trace with hash -581891221, now seen corresponding path program 1 times [2021-11-03 04:11:35,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:11:35,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856287450] [2021-11-03 04:11:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:35,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:11:35,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:11:35,290 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:11:35,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:11:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:40,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:11:40,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:11:40,805 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 04:11:40,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:11:41,017 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 04:11:41,017 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:11:41,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856287450] [2021-11-03 04:11:41,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856287450] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:41,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:41,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:11:41,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399367536] [2021-11-03 04:11:41,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:11:41,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:11:41,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:11:41,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:11:41,019 INFO L87 Difference]: Start difference. First operand 327 states and 380 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 04:11:41,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:41,654 INFO L93 Difference]: Finished difference Result 692 states and 834 transitions. [2021-11-03 04:11:41,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:11:41,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 96 [2021-11-03 04:11:41,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:41,660 INFO L225 Difference]: With dead ends: 692 [2021-11-03 04:11:41,660 INFO L226 Difference]: Without dead ends: 690 [2021-11-03 04:11:41,661 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:11:41,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-11-03 04:11:41,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 325. [2021-11-03 04:11:41,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 312 states have (on average 1.2115384615384615) internal successors, (378), 324 states have internal predecessors, (378), 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 04:11:41,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 378 transitions. [2021-11-03 04:11:41,689 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 378 transitions. Word has length 96 [2021-11-03 04:11:41,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:41,689 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 378 transitions. [2021-11-03 04:11:41,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 04:11:41,690 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 378 transitions. [2021-11-03 04:11:41,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-03 04:11:41,691 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:41,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:11:41,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:11:41,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:11:41,914 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:11:41,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:41,914 INFO L85 PathProgramCache]: Analyzing trace with hash -620538052, now seen corresponding path program 1 times [2021-11-03 04:11:41,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:11:41,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124439331] [2021-11-03 04:11:41,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:41,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:11:41,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:11:41,921 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:11:41,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:11:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:47,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 1921 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:11:47,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:11:48,087 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 04:11:48,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:11:48,525 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 04:11:48,525 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:11:48,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124439331] [2021-11-03 04:11:48,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124439331] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:48,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:48,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:11:48,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119909635] [2021-11-03 04:11:48,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:11:48,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:11:48,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:11:48,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:11:48,527 INFO L87 Difference]: Start difference. First operand 325 states and 378 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 04:11:48,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:48,949 INFO L93 Difference]: Finished difference Result 803 states and 944 transitions. [2021-11-03 04:11:48,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:11:48,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 102 [2021-11-03 04:11:48,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:48,954 INFO L225 Difference]: With dead ends: 803 [2021-11-03 04:11:48,955 INFO L226 Difference]: Without dead ends: 580 [2021-11-03 04:11:48,956 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:11:48,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-11-03 04:11:48,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 357. [2021-11-03 04:11:48,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 344 states have (on average 1.2005813953488371) internal successors, (413), 356 states have internal predecessors, (413), 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 04:11:48,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 413 transitions. [2021-11-03 04:11:48,982 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 413 transitions. Word has length 102 [2021-11-03 04:11:48,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:48,983 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 413 transitions. [2021-11-03 04:11:48,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 04:11:48,983 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 413 transitions. [2021-11-03 04:11:48,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-03 04:11:48,984 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:48,985 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:11:49,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-03 04:11:49,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:11:49,198 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:11:49,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:49,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1631655302, now seen corresponding path program 1 times [2021-11-03 04:11:49,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:11:49,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699142916] [2021-11-03 04:11:49,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:49,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:11:49,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:11:49,202 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:11:49,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:11:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:55,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-03 04:11:55,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:11:56,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-03 04:11:56,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-03 04:11:56,646 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 04:11:56,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:11:57,404 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-03 04:11:57,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-11-03 04:11:57,647 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 04:11:57,647 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:11:57,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699142916] [2021-11-03 04:11:57,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [699142916] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:57,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:57,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 9] imperfect sequences [] total 13 [2021-11-03 04:11:57,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741358182] [2021-11-03 04:11:57,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 04:11:57,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:11:57,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 04:11:57,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:11:57,650 INFO L87 Difference]: Start difference. First operand 357 states and 413 transitions. Second operand has 13 states, 13 states have (on average 8.461538461538462) internal successors, (110), 13 states have internal predecessors, (110), 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 04:12:26,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:12:26,385 INFO L93 Difference]: Finished difference Result 848 states and 983 transitions. [2021-11-03 04:12:26,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-03 04:12:26,387 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.461538461538462) internal successors, (110), 13 states have internal predecessors, (110), 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 102 [2021-11-03 04:12:26,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:12:26,391 INFO L225 Difference]: With dead ends: 848 [2021-11-03 04:12:26,391 INFO L226 Difference]: Without dead ends: 632 [2021-11-03 04:12:26,393 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=537, Invalid=1355, Unknown=0, NotChecked=0, Total=1892 [2021-11-03 04:12:26,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-03 04:12:26,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 369. [2021-11-03 04:12:26,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 356 states have (on average 1.196629213483146) internal successors, (426), 368 states have internal predecessors, (426), 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 04:12:26,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 426 transitions. [2021-11-03 04:12:26,433 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 426 transitions. Word has length 102 [2021-11-03 04:12:26,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:12:26,434 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 426 transitions. [2021-11-03 04:12:26,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.461538461538462) internal successors, (110), 13 states have internal predecessors, (110), 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 04:12:26,434 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 426 transitions. [2021-11-03 04:12:26,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-03 04:12:26,436 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:12:26,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:26,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:12:26,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:12:26,650 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:12:26,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:12:26,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1278121790, now seen corresponding path program 1 times [2021-11-03 04:12:26,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:12:26,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167124042] [2021-11-03 04:12:26,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:12:26,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:12:26,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:12:26,657 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:12:26,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:12:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:12:32,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 1931 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-03 04:12:32,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:12:33,316 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 04:12:33,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:12:33,984 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 04:12:33,984 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:12:33,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167124042] [2021-11-03 04:12:33,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167124042] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:12:33,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:12:33,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-11-03 04:12:33,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594348710] [2021-11-03 04:12:33,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:12:33,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:12:33,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:12:33,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:12:33,986 INFO L87 Difference]: Start difference. First operand 369 states and 426 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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 04:12:34,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:12:34,873 INFO L93 Difference]: Finished difference Result 969 states and 1139 transitions. [2021-11-03 04:12:34,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:12:34,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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 103 [2021-11-03 04:12:34,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:12:34,880 INFO L225 Difference]: With dead ends: 969 [2021-11-03 04:12:34,880 INFO L226 Difference]: Without dead ends: 746 [2021-11-03 04:12:34,881 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:12:34,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-11-03 04:12:34,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 383. [2021-11-03 04:12:34,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 370 states have (on average 1.2) internal successors, (444), 382 states have internal predecessors, (444), 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 04:12:34,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 444 transitions. [2021-11-03 04:12:34,926 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 444 transitions. Word has length 103 [2021-11-03 04:12:34,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:12:34,927 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 444 transitions. [2021-11-03 04:12:34,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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 04:12:34,927 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 444 transitions. [2021-11-03 04:12:34,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-03 04:12:34,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:12:34,929 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:35,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:12:35,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:12:35,154 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:12:35,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:12:35,154 INFO L85 PathProgramCache]: Analyzing trace with hash -647904125, now seen corresponding path program 1 times [2021-11-03 04:12:35,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:12:35,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333706723] [2021-11-03 04:12:35,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:12:35,159 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:12:35,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:12:35,162 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:12:35,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:12:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:12:41,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:12:41,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:12:41,564 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 04:12:41,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:12:41,844 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 04:12:41,845 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:12:41,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333706723] [2021-11-03 04:12:41,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333706723] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:12:41,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:12:41,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:12:41,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350574747] [2021-11-03 04:12:41,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:12:41,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:12:41,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:12:41,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:12:41,851 INFO L87 Difference]: Start difference. First operand 383 states and 444 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 04:12:41,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:12:41,921 INFO L93 Difference]: Finished difference Result 527 states and 612 transitions. [2021-11-03 04:12:41,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:12:41,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2021-11-03 04:12:41,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:12:41,925 INFO L225 Difference]: With dead ends: 527 [2021-11-03 04:12:41,925 INFO L226 Difference]: Without dead ends: 383 [2021-11-03 04:12:41,928 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:12:41,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-11-03 04:12:41,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2021-11-03 04:12:41,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 370 states have (on average 1.1945945945945946) internal successors, (442), 382 states have internal predecessors, (442), 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 04:12:41,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 442 transitions. [2021-11-03 04:12:41,970 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 442 transitions. Word has length 103 [2021-11-03 04:12:41,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:12:41,971 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 442 transitions. [2021-11-03 04:12:41,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 04:12:41,971 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 442 transitions. [2021-11-03 04:12:41,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-03 04:12:41,973 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:12:41,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:42,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 04:12:42,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:12:42,190 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:12:42,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:12:42,191 INFO L85 PathProgramCache]: Analyzing trace with hash -389738687, now seen corresponding path program 1 times [2021-11-03 04:12:42,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:12:42,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635721001] [2021-11-03 04:12:42,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:12:42,197 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:12:42,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:12:42,198 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:12:42,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_154fbcf8-d47b-4692-a24b-714afec953d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 04:19:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:03,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 1876 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-03 04:19:03,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:19:04,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:04,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 109 [2021-11-03 04:19:07,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:19:07,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:19:07,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:19:07,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:19:07,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:19:07,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:19:07,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:19:07,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:19:08,282 INFO L354 Elim1Store]: treesize reduction 232, result has 27.7 percent of original size [2021-11-03 04:19:08,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 50 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 533 treesize of output 357 [2021-11-03 04:19:10,373 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:19:10,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 507 treesize of output 411 [2021-11-03 04:19:10,935 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 04:19:10,935 INFO L328 TraceCheckSpWp]: Computing backward predicates...