./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_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_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/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_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/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_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/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 9e4ccc391c063e90fb229c8b3638d2f1089d6ba2ff288522cf06bf650b1be9e5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:52:36,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:52:36,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:52:36,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:52:36,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:52:36,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:52:36,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:52:36,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:52:36,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:52:36,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:52:36,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:52:36,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:52:36,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:52:36,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:52:36,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:52:36,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:52:36,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:52:36,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:52:36,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:52:36,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:52:36,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:52:36,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:52:36,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:52:36,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:52:36,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:52:36,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:52:36,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:52:36,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:52:36,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:52:36,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:52:36,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:52:36,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:52:36,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:52:36,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:52:36,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:52:36,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:52:36,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:52:36,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:52:36,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:52:36,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:52:36,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:52:36,735 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 03:52:36,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:52:36,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:52:36,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:52:36,773 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:52:36,773 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:52:36,774 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:52:36,774 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:52:36,775 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:52:36,775 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:52:36,775 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:52:36,776 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:52:36,776 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:52:36,776 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:52:36,777 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:52:36,777 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:52:36,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:52:36,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:52:36,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:52:36,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:52:36,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:52:36,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:52:36,780 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:52:36,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:52:36,781 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:52:36,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:52:36,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:52:36,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:52:36,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:52:36,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:52:36,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:52:36,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:52:36,784 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:52:36,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:52:36,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:52:36,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:52:36,785 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:52:36,786 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_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e4ccc391c063e90fb229c8b3638d2f1089d6ba2ff288522cf06bf650b1be9e5 [2021-11-03 03:52:37,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:52:37,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:52:37,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:52:37,120 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:52:37,122 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:52:37,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i [2021-11-03 03:52:37,210 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/data/bbc042e53/c222965a134842b2ada5958bc7423a19/FLAGb4a84c079 [2021-11-03 03:52:38,318 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:52:38,319 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i [2021-11-03 03:52:38,377 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/data/bbc042e53/c222965a134842b2ada5958bc7423a19/FLAGb4a84c079 [2021-11-03 03:52:38,635 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/data/bbc042e53/c222965a134842b2ada5958bc7423a19 [2021-11-03 03:52:38,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:52:38,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:52:38,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:52:38,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:52:38,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:52:38,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:38" (1/1) ... [2021-11-03 03:52:38,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46d2eb5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:38, skipping insertion in model container [2021-11-03 03:52:38,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:38" (1/1) ... [2021-11-03 03:52:38,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:52:38,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:52:39,206 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_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4495,4508] [2021-11-03 03:52:39,216 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_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4555,4568] [2021-11-03 03:52:39,246 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 03:52:39,254 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 03:52:40,460 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:40,461 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:40,462 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:40,463 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:40,464 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:40,484 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:40,485 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:40,487 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:40,488 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:41,063 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 03:52:41,065 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 03:52:41,066 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 03:52:41,068 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 03:52:41,070 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 03:52:41,071 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 03:52:41,071 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 03:52:41,072 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 03:52:41,073 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 03:52:41,074 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 03:52:41,308 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 03:52:41,329 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.IllegalArgumentException: byte size smaller than 1 makes no sense at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:194) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1054) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:962) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1369) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:249) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.translateInitializer(CHandler.java:2938) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2798) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2101) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:143) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1119) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:211) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1068) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1452) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3247) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2321) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:594) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 03:52:41,335 INFO L168 Benchmark]: Toolchain (without parser) took 2694.61 ms. Allocated memory is still 117.4 MB. Free memory was 70.3 MB in the beginning and 57.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:52:41,336 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 117.4 MB. Free memory was 96.3 MB in the beginning and 96.3 MB in the end (delta: 69.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:52:41,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2690.07 ms. Allocated memory is still 117.4 MB. Free memory was 70.1 MB in the beginning and 57.4 MB in the end (delta: 12.7 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:52:41,340 INFO L339 ainManager$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 117.4 MB. Free memory was 96.3 MB in the beginning and 96.3 MB in the end (delta: 69.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2690.07 ms. Allocated memory is still 117.4 MB. Free memory was 70.1 MB in the beginning and 57.4 MB in the end (delta: 12.7 MB). Peak memory consumption was 15.4 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_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/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_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/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_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/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 9e4ccc391c063e90fb229c8b3638d2f1089d6ba2ff288522cf06bf650b1be9e5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:52:44,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:52:44,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:52:44,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:52:44,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:52:44,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:52:44,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:52:44,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:52:44,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:52:44,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:52:44,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:52:44,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:52:44,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:52:44,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:52:44,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:52:44,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:52:44,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:52:44,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:52:44,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:52:44,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:52:44,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:52:44,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:52:44,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:52:44,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:52:44,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:52:44,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:52:44,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:52:44,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:52:44,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:52:44,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:52:44,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:52:44,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:52:44,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:52:44,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:52:44,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:52:44,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:52:44,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:52:44,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:52:44,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:52:44,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:52:44,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:52:44,448 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 03:52:44,483 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:52:44,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:52:44,485 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:52:44,485 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:52:44,485 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:52:44,486 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:52:44,486 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:52:44,486 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:52:44,486 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:52:44,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:52:44,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:52:44,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:52:44,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:52:44,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:52:44,489 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:52:44,489 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:52:44,489 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:52:44,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:52:44,490 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:52:44,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:52:44,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:52:44,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:52:44,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:52:44,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:52:44,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:52:44,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:52:44,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:52:44,492 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:52:44,493 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:52:44,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:52:44,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:52:44,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:52:44,494 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_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e4ccc391c063e90fb229c8b3638d2f1089d6ba2ff288522cf06bf650b1be9e5 [2021-11-03 03:52:44,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:52:45,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:52:45,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:52:45,038 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:52:45,039 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:52:45,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i [2021-11-03 03:52:45,138 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/data/7fb3d721e/20d8fc5fcfea417590415e9990a70c98/FLAG910ee21c2 [2021-11-03 03:52:46,329 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:52:46,330 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i [2021-11-03 03:52:46,381 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/data/7fb3d721e/20d8fc5fcfea417590415e9990a70c98/FLAG910ee21c2 [2021-11-03 03:52:46,670 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/data/7fb3d721e/20d8fc5fcfea417590415e9990a70c98 [2021-11-03 03:52:46,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:52:46,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:52:46,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:52:46,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:52:46,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:52:46,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:46" (1/1) ... [2021-11-03 03:52:46,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49edd9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:46, skipping insertion in model container [2021-11-03 03:52:46,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:46" (1/1) ... [2021-11-03 03:52:46,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:52:46,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:52:47,247 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_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4495,4508] [2021-11-03 03:52:47,256 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_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4555,4568] [2021-11-03 03:52:47,298 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 03:52:47,315 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 03:52:48,943 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:48,947 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:48,948 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:48,950 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:48,952 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:48,987 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:48,988 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:48,989 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:48,990 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:49,548 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 03:52:49,550 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 03:52:49,551 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 03:52:49,553 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 03:52:49,555 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 03:52:49,579 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 03:52:49,580 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 03:52:49,581 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 03:52:49,582 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 03:52:49,583 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 03:52:49,829 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 03:52:50,023 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,023 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:52:50,260 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:52:50,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:52:50,383 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_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4495,4508] [2021-11-03 03:52:50,384 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_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4555,4568] [2021-11-03 03:52:50,387 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 03:52:50,388 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 03:52:50,468 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,468 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,469 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,471 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,472 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,500 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,501 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,503 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,504 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,588 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 03:52:50,589 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 03:52:50,590 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 03:52:50,592 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 03:52:50,596 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 03:52:50,597 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 03:52:50,598 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 03:52:50,599 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 03:52:50,599 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 03:52:50,600 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 03:52:50,651 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 03:52:50,750 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,755 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:52:50,849 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:52:50,865 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_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4495,4508] [2021-11-03 03:52:50,865 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_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4555,4568] [2021-11-03 03:52:50,867 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 03:52:50,868 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 03:52:50,902 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,903 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,903 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,904 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,905 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,911 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,912 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,913 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,914 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:50,950 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 03:52:50,951 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 03:52:50,952 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 03:52:50,952 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 03:52:50,953 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 03:52:50,954 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 03:52:50,954 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 03:52:50,955 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 03:52:50,956 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 03:52:50,956 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 03:52:50,980 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 03:52:51,102 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:51,103 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:52:51,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:52:51,733 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:52:51,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:51 WrapperNode [2021-11-03 03:52:51,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:52:51,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:52:51,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:52:51,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:52:51,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:51" (1/1) ... [2021-11-03 03:52:51,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:51" (1/1) ... [2021-11-03 03:52:52,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:52:52,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:52:52,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:52:52,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:52:52,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:51" (1/1) ... [2021-11-03 03:52:52,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:51" (1/1) ... [2021-11-03 03:52:52,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:51" (1/1) ... [2021-11-03 03:52:52,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:51" (1/1) ... [2021-11-03 03:52:52,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:51" (1/1) ... [2021-11-03 03:52:52,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:51" (1/1) ... [2021-11-03 03:52:52,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:51" (1/1) ... [2021-11-03 03:52:52,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:52:52,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:52:52,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:52:52,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:52:52,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:51" (1/1) ... [2021-11-03 03:52:52,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:52:52,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:52:52,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:52:52,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:52:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:52:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:52:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 03:52:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 03:52:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:52:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:52:52,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:52:52,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:52:52,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 03:52:52,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 03:52:52,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:52:52,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:52:52,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 03:52:52,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 03:52:52,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 03:53:10,106 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:53:10,110 INFO L299 CfgBuilder]: Removed 101 assume(true) statements. [2021-11-03 03:53:10,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:53:10 BoogieIcfgContainer [2021-11-03 03:53:10,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:53:10,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:53:10,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:53:10,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:53:10,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:52:46" (1/3) ... [2021-11-03 03:53:10,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6157540b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:53:10, skipping insertion in model container [2021-11-03 03:53:10,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:51" (2/3) ... [2021-11-03 03:53:10,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6157540b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:53:10, skipping insertion in model container [2021-11-03 03:53:10,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:53:10" (3/3) ... [2021-11-03 03:53:10,128 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_c_str_harness.i [2021-11-03 03:53:10,136 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:53:10,136 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-03 03:53:10,217 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:53:10,239 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 03:53:10,239 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-03 03:53:10,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 161 states have (on average 1.4906832298136645) internal successors, (240), 172 states have internal predecessors, (240), 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 03:53:10,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 03:53:10,281 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:10,282 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:53:10,282 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 03:53:10,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:10,289 INFO L85 PathProgramCache]: Analyzing trace with hash -27449226, now seen corresponding path program 1 times [2021-11-03 03:53:10,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:10,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878006251] [2021-11-03 03:53:10,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:10,319 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:10,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:10,323 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:10,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:53:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:53:15,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:53:15,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:53:15,990 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 03:53:15,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:16,200 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 03:53:16,201 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:53:16,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878006251] [2021-11-03 03:53:16,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878006251] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:53:16,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:53:16,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:53:16,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484231977] [2021-11-03 03:53:16,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:53:16,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:53:16,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:53:16,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:53:16,242 INFO L87 Difference]: Start difference. First operand has 173 states, 161 states have (on average 1.4906832298136645) internal successors, (240), 172 states have internal predecessors, (240), 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 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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 03:53:16,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:53:16,305 INFO L93 Difference]: Finished difference Result 342 states and 475 transitions. [2021-11-03 03:53:16,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:53:16,307 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-03 03:53:16,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:53:16,322 INFO L225 Difference]: With dead ends: 342 [2021-11-03 03:53:16,323 INFO L226 Difference]: Without dead ends: 167 [2021-11-03 03:53:16,329 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 100 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 03:53:16,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-03 03:53:16,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-11-03 03:53:16,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 156 states have (on average 1.3269230769230769) internal successors, (207), 166 states have internal predecessors, (207), 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 03:53:16,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 207 transitions. [2021-11-03 03:53:16,405 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 207 transitions. Word has length 51 [2021-11-03 03:53:16,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:53:16,406 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 207 transitions. [2021-11-03 03:53:16,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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 03:53:16,406 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 207 transitions. [2021-11-03 03:53:16,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 03:53:16,411 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:16,411 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:53:16,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 03:53:16,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:53:16,627 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 03:53:16,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:16,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1139044352, now seen corresponding path program 1 times [2021-11-03 03:53:16,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:16,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111355909] [2021-11-03 03:53:16,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:16,633 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:16,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:16,634 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:16,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:53:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:53:22,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:53:22,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:53:22,575 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 03:53:22,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:22,914 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 03:53:22,915 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:53:22,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111355909] [2021-11-03 03:53:22,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111355909] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:53:22,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:53:22,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:53:22,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321568367] [2021-11-03 03:53:22,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:53:22,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:53:22,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:53:22,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:53:22,919 INFO L87 Difference]: Start difference. First operand 167 states and 207 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 03:53:23,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:53:23,245 INFO L93 Difference]: Finished difference Result 299 states and 371 transitions. [2021-11-03 03:53:23,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:53:23,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-03 03:53:23,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:53:23,248 INFO L225 Difference]: With dead ends: 299 [2021-11-03 03:53:23,249 INFO L226 Difference]: Without dead ends: 167 [2021-11-03 03:53:23,250 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 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 03:53:23,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-03 03:53:23,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-11-03 03:53:23,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 156 states have (on average 1.3076923076923077) internal successors, (204), 166 states have internal predecessors, (204), 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 03:53:23,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 204 transitions. [2021-11-03 03:53:23,265 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 204 transitions. Word has length 51 [2021-11-03 03:53:23,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:53:23,266 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 204 transitions. [2021-11-03 03:53:23,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 03:53:23,267 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 204 transitions. [2021-11-03 03:53:23,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-03 03:53:23,269 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:23,270 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] [2021-11-03 03:53:23,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:53:23,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:53:23,495 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 03:53:23,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:23,495 INFO L85 PathProgramCache]: Analyzing trace with hash 692264448, now seen corresponding path program 1 times [2021-11-03 03:53:23,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:23,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215954773] [2021-11-03 03:53:23,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:23,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:23,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:23,501 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:23,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:53:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:53:29,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 03:53:29,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:53:29,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-03 03:53:30,071 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 03:53:30,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:30,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-03 03:53:30,872 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 03:53:30,872 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:53:30,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215954773] [2021-11-03 03:53:30,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1215954773] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:53:30,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:53:30,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 13 [2021-11-03 03:53:30,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35018015] [2021-11-03 03:53:30,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 03:53:30,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:53:30,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 03:53:30,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-03 03:53:30,875 INFO L87 Difference]: Start difference. First operand 167 states and 204 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 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 03:53:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:53:38,670 INFO L93 Difference]: Finished difference Result 462 states and 574 transitions. [2021-11-03 03:53:38,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:53:38,672 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 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 63 [2021-11-03 03:53:38,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:53:38,675 INFO L225 Difference]: With dead ends: 462 [2021-11-03 03:53:38,675 INFO L226 Difference]: Without dead ends: 329 [2021-11-03 03:53:38,677 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2021-11-03 03:53:38,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-03 03:53:38,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 244. [2021-11-03 03:53:38,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 233 states have (on average 1.3133047210300428) internal successors, (306), 243 states have internal predecessors, (306), 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 03:53:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 306 transitions. [2021-11-03 03:53:38,705 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 306 transitions. Word has length 63 [2021-11-03 03:53:38,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:53:38,705 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 306 transitions. [2021-11-03 03:53:38,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 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 03:53:38,706 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 306 transitions. [2021-11-03 03:53:38,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 03:53:38,710 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:38,710 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] [2021-11-03 03:53:38,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:53:38,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:53:38,935 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 03:53:38,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:38,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1525799419, now seen corresponding path program 1 times [2021-11-03 03:53:38,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:38,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4645748] [2021-11-03 03:53:38,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:38,941 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:38,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:38,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:38,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:53:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:53:44,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 1921 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:53:44,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:53:44,867 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-03 03:53:44,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 203 treesize of output 59 [2021-11-03 03:53:45,151 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 03:53:45,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:45,779 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 03:53:45,780 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:53:45,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4645748] [2021-11-03 03:53:45,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4645748] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:53:45,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:53:45,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-03 03:53:45,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395986351] [2021-11-03 03:53:45,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 03:53:45,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:53:45,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 03:53:45,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:53:45,782 INFO L87 Difference]: Start difference. First operand 244 states and 306 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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 03:53:59,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:53:59,287 INFO L93 Difference]: Finished difference Result 710 states and 892 transitions. [2021-11-03 03:53:59,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:53:59,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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 70 [2021-11-03 03:53:59,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:53:59,295 INFO L225 Difference]: With dead ends: 710 [2021-11-03 03:53:59,295 INFO L226 Difference]: Without dead ends: 495 [2021-11-03 03:53:59,298 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:53:59,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-11-03 03:53:59,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 284. [2021-11-03 03:53:59,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 273 states have (on average 1.3076923076923077) internal successors, (357), 283 states have internal predecessors, (357), 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 03:53:59,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 357 transitions. [2021-11-03 03:53:59,329 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 357 transitions. Word has length 70 [2021-11-03 03:53:59,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:53:59,329 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 357 transitions. [2021-11-03 03:53:59,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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 03:53:59,330 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 357 transitions. [2021-11-03 03:53:59,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 03:53:59,334 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:59,334 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] [2021-11-03 03:53:59,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:53:59,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:53:59,557 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 03:53:59,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:59,558 INFO L85 PathProgramCache]: Analyzing trace with hash 628406141, now seen corresponding path program 1 times [2021-11-03 03:53:59,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:59,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652831702] [2021-11-03 03:53:59,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:59,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:59,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:59,564 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:59,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:54:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:04,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 03:54:04,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:05,561 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-03 03:54:05,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 203 treesize of output 59 [2021-11-03 03:54:06,134 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 03:54:06,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:54:07,151 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 03:54:07,152 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:54:07,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652831702] [2021-11-03 03:54:07,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652831702] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:07,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:07,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2021-11-03 03:54:07,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730214805] [2021-11-03 03:54:07,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 03:54:07,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:54:07,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 03:54:07,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:54:07,155 INFO L87 Difference]: Start difference. First operand 284 states and 357 transitions. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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 03:54:19,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:19,213 INFO L93 Difference]: Finished difference Result 875 states and 1066 transitions. [2021-11-03 03:54:19,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 03:54:19,217 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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 70 [2021-11-03 03:54:19,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:19,222 INFO L225 Difference]: With dead ends: 875 [2021-11-03 03:54:19,223 INFO L226 Difference]: Without dead ends: 563 [2021-11-03 03:54:19,224 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2021-11-03 03:54:19,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-11-03 03:54:19,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 277. [2021-11-03 03:54:19,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 266 states have (on average 1.2706766917293233) internal successors, (338), 276 states have internal predecessors, (338), 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 03:54:19,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 338 transitions. [2021-11-03 03:54:19,252 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 338 transitions. Word has length 70 [2021-11-03 03:54:19,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:19,253 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 338 transitions. [2021-11-03 03:54:19,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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 03:54:19,253 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 338 transitions. [2021-11-03 03:54:19,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 03:54:19,256 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:19,257 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] [2021-11-03 03:54:19,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:54:19,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:54:19,480 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 03:54:19,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:19,481 INFO L85 PathProgramCache]: Analyzing trace with hash 19949906, now seen corresponding path program 1 times [2021-11-03 03:54:19,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:54:19,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136728513] [2021-11-03 03:54:19,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:19,487 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:54:19,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:54:19,489 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:54:19,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:54:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:24,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:54:24,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:25,216 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 03:54:25,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:54:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:25,510 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:54:25,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136728513] [2021-11-03 03:54:25,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136728513] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:25,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:25,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:54:25,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525903343] [2021-11-03 03:54:25,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:54:25,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:54:25,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:54:25,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:54:25,514 INFO L87 Difference]: Start difference. First operand 277 states and 338 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 03:54:25,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:25,777 INFO L93 Difference]: Finished difference Result 557 states and 673 transitions. [2021-11-03 03:54:25,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:54:25,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 72 [2021-11-03 03:54:25,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:25,780 INFO L225 Difference]: With dead ends: 557 [2021-11-03 03:54:25,780 INFO L226 Difference]: Without dead ends: 306 [2021-11-03 03:54:25,781 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 140 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 03:54:25,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-11-03 03:54:25,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 267. [2021-11-03 03:54:25,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 256 states have (on average 1.23828125) internal successors, (317), 266 states have internal predecessors, (317), 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 03:54:25,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 317 transitions. [2021-11-03 03:54:25,797 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 317 transitions. Word has length 72 [2021-11-03 03:54:25,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:25,798 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 317 transitions. [2021-11-03 03:54:25,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 03:54:25,799 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 317 transitions. [2021-11-03 03:54:25,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 03:54:25,801 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:25,801 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] [2021-11-03 03:54:25,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:54:26,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:54:26,027 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 03:54:26,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:26,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1959111952, now seen corresponding path program 1 times [2021-11-03 03:54:26,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:54:26,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270842025] [2021-11-03 03:54:26,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:26,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:54:26,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:54:26,040 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:54:26,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:54:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:31,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1923 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:54:31,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:32,149 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 03:54:32,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:54:32,665 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 03:54:32,665 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:54:32,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270842025] [2021-11-03 03:54:32,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270842025] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:32,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:32,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 03:54:32,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789718358] [2021-11-03 03:54:32,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:54:32,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:54:32,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:54:32,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:54:32,667 INFO L87 Difference]: Start difference. First operand 267 states and 317 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 03:54:33,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:33,004 INFO L93 Difference]: Finished difference Result 372 states and 442 transitions. [2021-11-03 03:54:33,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:54:33,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 72 [2021-11-03 03:54:33,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:33,006 INFO L225 Difference]: With dead ends: 372 [2021-11-03 03:54:33,006 INFO L226 Difference]: Without dead ends: 267 [2021-11-03 03:54:33,007 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 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 03:54:33,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-03 03:54:33,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2021-11-03 03:54:33,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 256 states have (on average 1.23046875) internal successors, (315), 266 states have internal predecessors, (315), 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 03:54:33,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 315 transitions. [2021-11-03 03:54:33,021 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 315 transitions. Word has length 72 [2021-11-03 03:54:33,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:33,021 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 315 transitions. [2021-11-03 03:54:33,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 03:54:33,022 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 315 transitions. [2021-11-03 03:54:33,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 03:54:33,023 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:33,024 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] [2021-11-03 03:54:33,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-03 03:54:33,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:54:33,235 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 03:54:33,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:33,235 INFO L85 PathProgramCache]: Analyzing trace with hash 139137509, now seen corresponding path program 1 times [2021-11-03 03:54:33,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:54:33,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124829089] [2021-11-03 03:54:33,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:33,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:54:33,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:54:33,241 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:54:33,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 03:54:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:38,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 1936 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-03 03:54:38,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:40,917 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 03:54:40,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:54:44,283 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:44,283 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 40 treesize of output 43 [2021-11-03 03:54:44,333 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-03 03:54:44,333 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 39 treesize of output 34 [2021-11-03 03:54:44,634 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 03:54:44,635 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:54:44,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124829089] [2021-11-03 03:54:44,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124829089] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:44,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:44,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 12] imperfect sequences [] total 20 [2021-11-03 03:54:44,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931141191] [2021-11-03 03:54:44,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-03 03:54:44,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:54:44,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-03 03:54:44,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-11-03 03:54:44,638 INFO L87 Difference]: Start difference. First operand 267 states and 315 transitions. Second operand has 20 states, 20 states have (on average 7.55) internal successors, (151), 20 states have internal predecessors, (151), 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 03:54:59,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:59,652 INFO L93 Difference]: Finished difference Result 650 states and 756 transitions. [2021-11-03 03:54:59,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-03 03:54:59,653 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.55) internal successors, (151), 20 states have internal predecessors, (151), 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 78 [2021-11-03 03:54:59,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:59,657 INFO L225 Difference]: With dead ends: 650 [2021-11-03 03:54:59,658 INFO L226 Difference]: Without dead ends: 562 [2021-11-03 03:54:59,661 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=651, Invalid=3009, Unknown=0, NotChecked=0, Total=3660 [2021-11-03 03:54:59,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-11-03 03:54:59,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 302. [2021-11-03 03:54:59,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 291 states have (on average 1.2199312714776633) internal successors, (355), 301 states have internal predecessors, (355), 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 03:54:59,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 355 transitions. [2021-11-03 03:54:59,685 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 355 transitions. Word has length 78 [2021-11-03 03:54:59,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:59,686 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 355 transitions. [2021-11-03 03:54:59,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.55) internal successors, (151), 20 states have internal predecessors, (151), 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 03:54:59,686 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 355 transitions. [2021-11-03 03:54:59,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 03:54:59,688 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:59,688 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 03:54:59,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-03 03:54:59,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:54:59,915 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 03:54:59,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:59,915 INFO L85 PathProgramCache]: Analyzing trace with hash -291001238, now seen corresponding path program 1 times [2021-11-03 03:54:59,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:54:59,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005251297] [2021-11-03 03:54:59,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:59,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:54:59,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:54:59,921 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:54:59,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa2aa28-7fbf-4e7f-9b5a-6f6899cea44e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 03:55:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:58,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 1943 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-03 03:55:58,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:55:58,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 03:55:59,163 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 03:55:59,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-03 03:56:00,164 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-03 03:56:00,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 50 [2021-11-03 03:56:03,571 INFO L354 Elim1Store]: treesize reduction 81, result has 28.9 percent of original size [2021-11-03 03:56:03,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 48 treesize of output 70 [2021-11-03 03:56:12,598 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-03 03:56:12,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 74 [2021-11-03 03:56:13,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:13,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:14,009 INFO L354 Elim1Store]: treesize reduction 1043, result has 6.2 percent of original size [2021-11-03 03:56:14,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 7 case distinctions, treesize of input 121 treesize of output 169 [2021-11-03 03:56:20,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:20,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:59,967 WARN L207 SmtUtils]: Spent 39.80 s on a formula simplification. DAG size of input: 625 DAG size of output: 102 [2021-11-03 03:56:59,969 INFO L354 Elim1Store]: treesize reduction 2026, result has 8.1 percent of original size [2021-11-03 03:56:59,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 28 disjoint index pairs (out of 136 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 238 treesize of output 270