./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_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_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/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_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/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_5f3cbd57-e1ee-41c8-b091-91cbe355b755/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 82914be9df39aade96902f979c145aa97bb18d611f7f0e9a90ee0ab6b53af5a2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:02:01,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:02:01,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:02:01,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:02:01,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:02:01,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:02:01,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:02:01,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:02:01,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:02:01,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:02:01,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:02:01,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:02:01,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:02:01,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:02:01,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:02:01,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:02:01,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:02:01,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:02:01,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:02:01,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:02:01,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:02:01,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:02:01,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:02:01,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:02:01,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:02:01,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:02:01,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:02:01,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:02:01,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:02:01,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:02:01,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:02:01,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:02:01,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:02:01,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:02:01,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:02:01,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:02:01,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:02:01,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:02:01,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:02:01,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:02:01,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:02:01,614 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:02:01,647 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:02:01,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:02:01,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:02:01,654 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:02:01,654 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:02:01,654 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:02:01,655 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:02:01,655 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:02:01,655 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:02:01,655 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:02:01,663 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:02:01,663 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:02:01,663 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:02:01,664 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:02:01,664 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:02:01,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:02:01,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:02:01,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:02:01,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:02:01,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:02:01,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:02:01,666 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:02:01,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:02:01,667 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:02:01,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:02:01,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:02:01,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:02:01,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:02:01,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:02:01,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:02:01,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:02:01,671 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:02:01,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:02:01,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:02:01,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:02:01,672 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:02:01,672 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_5f3cbd57-e1ee-41c8-b091-91cbe355b755/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82914be9df39aade96902f979c145aa97bb18d611f7f0e9a90ee0ab6b53af5a2 [2021-11-03 04:02:01,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:02:01,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:02:01,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:02:01,984 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:02:01,985 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:02:01,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i [2021-11-03 04:02:02,053 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/data/4c5f2ec96/0bdfb4cea3f6424aa87174d981758c30/FLAGbe38c8b52 [2021-11-03 04:02:02,971 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:02:02,971 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i [2021-11-03 04:02:03,027 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/data/4c5f2ec96/0bdfb4cea3f6424aa87174d981758c30/FLAGbe38c8b52 [2021-11-03 04:02:03,422 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/data/4c5f2ec96/0bdfb4cea3f6424aa87174d981758c30 [2021-11-03 04:02:03,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:02:03,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:02:03,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:02:03,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:02:03,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:02:03,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:02:03" (1/1) ... [2021-11-03 04:02:03,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45a5ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:03, skipping insertion in model container [2021-11-03 04:02:03,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:02:03" (1/1) ... [2021-11-03 04:02:03,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:02:03,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:02:03,904 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_5f3cbd57-e1ee-41c8-b091-91cbe355b755/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4501,4514] [2021-11-03 04:02:03,915 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_5f3cbd57-e1ee-41c8-b091-91cbe355b755/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4561,4574] [2021-11-03 04:02:03,945 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:02:03,959 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:02:05,068 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:05,069 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:05,070 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:05,071 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:05,074 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:05,086 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:05,089 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:05,094 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:05,095 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:05,529 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:02:05,530 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:02:05,531 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:02:05,532 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:02:05,534 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:02:05,534 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:02:05,535 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:02:05,539 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:02:05,540 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:02:05,541 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:02:05,676 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:02:05,692 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.IllegalArgumentException: byte size smaller than 1 makes no sense at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:194) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1054) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:962) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1369) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:249) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.translateInitializer(CHandler.java:2938) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2798) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2101) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:143) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1119) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:211) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1068) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1452) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3247) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2321) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:594) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 04:02:05,700 INFO L168 Benchmark]: Toolchain (without parser) took 2270.46 ms. Allocated memory was 98.6 MB in the beginning and 138.4 MB in the end (delta: 39.8 MB). Free memory was 57.3 MB in the beginning and 78.7 MB in the end (delta: -21.4 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:02:05,701 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 98.6 MB. Free memory is still 53.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:02:05,702 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2267.63 ms. Allocated memory was 98.6 MB in the beginning and 138.4 MB in the end (delta: 39.8 MB). Free memory was 57.1 MB in the beginning and 78.7 MB in the end (delta: -21.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:02:05,704 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 98.6 MB. Free memory is still 53.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2267.63 ms. Allocated memory was 98.6 MB in the beginning and 138.4 MB in the end (delta: 39.8 MB). Free memory was 57.1 MB in the beginning and 78.7 MB in the end (delta: -21.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: IllegalArgumentException: byte size smaller than 1 makes no sense de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: IllegalArgumentException: byte size smaller than 1 makes no sense: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:194) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/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_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/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_5f3cbd57-e1ee-41c8-b091-91cbe355b755/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 82914be9df39aade96902f979c145aa97bb18d611f7f0e9a90ee0ab6b53af5a2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:02:08,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:02:08,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:02:08,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:02:08,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:02:08,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:02:08,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:02:08,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:02:08,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:02:08,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:02:08,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:02:08,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:02:08,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:02:08,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:02:08,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:02:08,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:02:08,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:02:08,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:02:08,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:02:08,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:02:08,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:02:08,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:02:08,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:02:08,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:02:08,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:02:08,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:02:08,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:02:08,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:02:08,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:02:08,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:02:08,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:02:08,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:02:08,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:02:08,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:02:08,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:02:08,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:02:08,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:02:08,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:02:08,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:02:08,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:02:08,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:02:08,170 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:02:08,213 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:02:08,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:02:08,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:02:08,215 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:02:08,215 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:02:08,215 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:02:08,216 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:02:08,216 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:02:08,216 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:02:08,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:02:08,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:02:08,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:02:08,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:02:08,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:02:08,220 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:02:08,220 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:02:08,221 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:02:08,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:02:08,221 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:02:08,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:02:08,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:02:08,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:02:08,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:02:08,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:02:08,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:02:08,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:02:08,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:02:08,223 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:02:08,223 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:02:08,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:02:08,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:02:08,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:02:08,224 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_5f3cbd57-e1ee-41c8-b091-91cbe355b755/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82914be9df39aade96902f979c145aa97bb18d611f7f0e9a90ee0ab6b53af5a2 [2021-11-03 04:02:08,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:02:08,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:02:08,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:02:08,718 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:02:08,719 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:02:08,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i [2021-11-03 04:02:08,786 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/data/a0fff90ad/820a29e5d20b4f47b82a6927a31cbe94/FLAG20820ba3e [2021-11-03 04:02:09,935 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:02:09,936 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i [2021-11-03 04:02:09,987 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/data/a0fff90ad/820a29e5d20b4f47b82a6927a31cbe94/FLAG20820ba3e [2021-11-03 04:02:10,258 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/data/a0fff90ad/820a29e5d20b4f47b82a6927a31cbe94 [2021-11-03 04:02:10,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:02:10,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:02:10,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:02:10,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:02:10,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:02:10,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:02:10" (1/1) ... [2021-11-03 04:02:10,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8078db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:10, skipping insertion in model container [2021-11-03 04:02:10,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:02:10" (1/1) ... [2021-11-03 04:02:10,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:02:10,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:02:10,738 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_5f3cbd57-e1ee-41c8-b091-91cbe355b755/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4501,4514] [2021-11-03 04:02:10,747 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_5f3cbd57-e1ee-41c8-b091-91cbe355b755/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4561,4574] [2021-11-03 04:02:10,777 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:02:10,793 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:02:11,963 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:11,964 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:11,965 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:11,966 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:11,967 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:11,993 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:11,994 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:11,997 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:11,997 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:12,448 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:02:12,450 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:02:12,451 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:02:12,465 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:02:12,467 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:02:12,467 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:02:12,468 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:02:12,469 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:02:12,469 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:02:12,470 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:02:12,691 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:02:12,867 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:12,867 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:12,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:02:13,065 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:02:13,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:02:13,105 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_5f3cbd57-e1ee-41c8-b091-91cbe355b755/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4501,4514] [2021-11-03 04:02:13,105 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_5f3cbd57-e1ee-41c8-b091-91cbe355b755/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4561,4574] [2021-11-03 04:02:13,106 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:02:13,107 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:02:13,156 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,156 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,157 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,157 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,171 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,189 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,189 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,191 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,191 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,248 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:02:13,249 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:02:13,250 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:02:13,251 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:02:13,252 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:02:13,252 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:02:13,253 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:02:13,253 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:02:13,254 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:02:13,254 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:02:13,287 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:02:13,373 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,373 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:02:13,480 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:02:13,506 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_5f3cbd57-e1ee-41c8-b091-91cbe355b755/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4501,4514] [2021-11-03 04:02:13,507 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_5f3cbd57-e1ee-41c8-b091-91cbe355b755/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4561,4574] [2021-11-03 04:02:13,509 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:02:13,510 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:02:13,553 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,553 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,554 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,554 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,555 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,560 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,560 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,561 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,562 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,596 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:02:13,598 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:02:13,598 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:02:13,599 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:02:13,600 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:02:13,600 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:02:13,601 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:02:13,602 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:02:13,602 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:02:13,603 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:02:13,630 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:02:13,729 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,730 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:02:13,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:02:14,123 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:02:14,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:14 WrapperNode [2021-11-03 04:02:14,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:02:14,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:02:14,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:02:14,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:02:14,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:14" (1/1) ... [2021-11-03 04:02:14,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:14" (1/1) ... [2021-11-03 04:02:14,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:02:14,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:02:14,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:02:14,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:02:14,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:14" (1/1) ... [2021-11-03 04:02:14,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:14" (1/1) ... [2021-11-03 04:02:14,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:14" (1/1) ... [2021-11-03 04:02:14,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:14" (1/1) ... [2021-11-03 04:02:14,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:14" (1/1) ... [2021-11-03 04:02:14,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:14" (1/1) ... [2021-11-03 04:02:14,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:14" (1/1) ... [2021-11-03 04:02:14,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:02:14,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:02:14,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:02:14,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:02:14,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:14" (1/1) ... [2021-11-03 04:02:14,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:02:14,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:02:14,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:02:14,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:02:14,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:02:14,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:02:14,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 04:02:14,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 04:02:14,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:02:14,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:02:14,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:02:14,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:02:14,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:02:14,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 04:02:14,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:02:14,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:02:14,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 04:02:14,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 04:02:14,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:02:32,052 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:02:32,052 INFO L299 CfgBuilder]: Removed 119 assume(true) statements. [2021-11-03 04:02:32,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:02:32 BoogieIcfgContainer [2021-11-03 04:02:32,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:02:32,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:02:32,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:02:32,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:02:32,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:02:10" (1/3) ... [2021-11-03 04:02:32,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e96e7bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:02:32, skipping insertion in model container [2021-11-03 04:02:32,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:02:14" (2/3) ... [2021-11-03 04:02:32,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e96e7bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:02:32, skipping insertion in model container [2021-11-03 04:02:32,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:02:32" (3/3) ... [2021-11-03 04:02:32,062 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_ignore_case_harness.i [2021-11-03 04:02:32,068 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:02:32,068 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-11-03 04:02:32,115 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:02:32,121 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:02:32,121 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-11-03 04:02:32,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 251 states, 235 states have (on average 1.4851063829787234) internal successors, (349), 250 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:02:32,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 04:02:32,150 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:02:32,151 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] [2021-11-03 04:02:32,152 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-03 04:02:32,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:02:32,157 INFO L85 PathProgramCache]: Analyzing trace with hash 825701746, now seen corresponding path program 1 times [2021-11-03 04:02:32,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:02:32,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251168761] [2021-11-03 04:02:32,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:32,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:02:32,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:02:32,185 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:02:32,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:02:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:36,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 1873 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:02:36,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:36,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:37,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:37,171 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:02:37,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251168761] [2021-11-03 04:02:37,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251168761] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:02:37,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:02:37,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:02:37,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189670051] [2021-11-03 04:02:37,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:02:37,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:02:37,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:02:37,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:02:37,195 INFO L87 Difference]: Start difference. First operand has 251 states, 235 states have (on average 1.4851063829787234) internal successors, (349), 250 states have internal predecessors, (349), 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 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:02:37,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:02:37,235 INFO L93 Difference]: Finished difference Result 498 states and 693 transitions. [2021-11-03 04:02:37,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:02:37,236 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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 44 [2021-11-03 04:02:37,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:02:37,246 INFO L225 Difference]: With dead ends: 498 [2021-11-03 04:02:37,246 INFO L226 Difference]: Without dead ends: 244 [2021-11-03 04:02:37,250 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:02:37,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-03 04:02:37,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-11-03 04:02:37,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 229 states have (on average 1.3580786026200873) internal successors, (311), 243 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:02:37,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 311 transitions. [2021-11-03 04:02:37,296 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 311 transitions. Word has length 44 [2021-11-03 04:02:37,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:02:37,297 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 311 transitions. [2021-11-03 04:02:37,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:02:37,297 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 311 transitions. [2021-11-03 04:02:37,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 04:02:37,300 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:02:37,300 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] [2021-11-03 04:02:37,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 04:02:37,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:02:37,524 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-03 04:02:37,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:02:37,525 INFO L85 PathProgramCache]: Analyzing trace with hash -291371024, now seen corresponding path program 1 times [2021-11-03 04:02:37,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:02:37,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940018513] [2021-11-03 04:02:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:37,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:02:37,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:02:37,537 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:02:37,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:02:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:41,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 1873 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:02:41,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:42,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:42,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:42,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:42,454 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:02:42,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940018513] [2021-11-03 04:02:42,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940018513] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:02:42,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:02:42,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:02:42,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107277249] [2021-11-03 04:02:42,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:02:42,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:02:42,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:02:42,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:02:42,457 INFO L87 Difference]: Start difference. First operand 244 states and 311 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:02:45,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:02:45,029 INFO L93 Difference]: Finished difference Result 646 states and 822 transitions. [2021-11-03 04:02:45,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:02:45,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2021-11-03 04:02:45,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:02:45,038 INFO L225 Difference]: With dead ends: 646 [2021-11-03 04:02:45,038 INFO L226 Difference]: Without dead ends: 428 [2021-11-03 04:02:45,040 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:02:45,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-11-03 04:02:45,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 338. [2021-11-03 04:02:45,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 323 states have (on average 1.3622291021671826) internal successors, (440), 337 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:02:45,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 440 transitions. [2021-11-03 04:02:45,101 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 440 transitions. Word has length 44 [2021-11-03 04:02:45,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:02:45,102 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 440 transitions. [2021-11-03 04:02:45,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:02:45,103 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 440 transitions. [2021-11-03 04:02:45,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 04:02:45,110 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:02:45,111 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] [2021-11-03 04:02:45,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:02:45,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:02:45,332 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-03 04:02:45,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:02:45,333 INFO L85 PathProgramCache]: Analyzing trace with hash -826034531, now seen corresponding path program 1 times [2021-11-03 04:02:45,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:02:45,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657231209] [2021-11-03 04:02:45,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:45,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:02:45,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:02:45,340 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:02:45,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:02:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:49,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 1883 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:02:49,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:50,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:50,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:50,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:50,456 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:02:50,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657231209] [2021-11-03 04:02:50,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657231209] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:02:50,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:02:50,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:02:50,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269909805] [2021-11-03 04:02:50,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:02:50,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:02:50,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:02:50,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:02:50,459 INFO L87 Difference]: Start difference. First operand 338 states and 440 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:02:51,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:02:51,174 INFO L93 Difference]: Finished difference Result 771 states and 1016 transitions. [2021-11-03 04:02:51,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:02:51,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2021-11-03 04:02:51,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:02:51,178 INFO L225 Difference]: With dead ends: 771 [2021-11-03 04:02:51,179 INFO L226 Difference]: Without dead ends: 458 [2021-11-03 04:02:51,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:02:51,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-03 04:02:51,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 362. [2021-11-03 04:02:51,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 347 states have (on average 1.3371757925072045) internal successors, (464), 361 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:02:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 464 transitions. [2021-11-03 04:02:51,235 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 464 transitions. Word has length 50 [2021-11-03 04:02:51,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:02:51,236 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 464 transitions. [2021-11-03 04:02:51,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:02:51,239 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 464 transitions. [2021-11-03 04:02:51,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 04:02:51,245 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:02:51,246 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:02:51,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:02:51,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:02:51,472 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-03 04:02:51,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:02:51,473 INFO L85 PathProgramCache]: Analyzing trace with hash 17970971, now seen corresponding path program 1 times [2021-11-03 04:02:51,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:02:51,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159313238] [2021-11-03 04:02:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:51,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:02:51,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:02:51,498 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:02:51,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:02:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:55,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 1886 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 04:02:55,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:56,350 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 04:02:56,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:56,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:57,247 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 04:02:57,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:57,534 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:02:57,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159313238] [2021-11-03 04:02:57,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159313238] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:02:57,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:02:57,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 13 [2021-11-03 04:02:57,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484629061] [2021-11-03 04:02:57,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 04:02:57,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:02:57,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 04:02:57,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:02:57,537 INFO L87 Difference]: Start difference. First operand 362 states and 464 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:03:11,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:03:11,178 INFO L93 Difference]: Finished difference Result 895 states and 1143 transitions. [2021-11-03 04:03:11,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 04:03:11,179 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 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 50 [2021-11-03 04:03:11,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:03:11,183 INFO L225 Difference]: With dead ends: 895 [2021-11-03 04:03:11,183 INFO L226 Difference]: Without dead ends: 560 [2021-11-03 04:03:11,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:03:11,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-11-03 04:03:11,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 360. [2021-11-03 04:03:11,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 345 states have (on average 1.336231884057971) internal successors, (461), 359 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:03:11,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 461 transitions. [2021-11-03 04:03:11,204 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 461 transitions. Word has length 50 [2021-11-03 04:03:11,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:03:11,205 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 461 transitions. [2021-11-03 04:03:11,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:03:11,205 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 461 transitions. [2021-11-03 04:03:11,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 04:03:11,207 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:03:11,207 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] [2021-11-03 04:03:11,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:03:11,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:03:11,425 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-03 04:03:11,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:03:11,426 INFO L85 PathProgramCache]: Analyzing trace with hash 445787557, now seen corresponding path program 1 times [2021-11-03 04:03:11,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:03:11,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598495995] [2021-11-03 04:03:11,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:03:11,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:03:11,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:03:11,431 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:03:11,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:03:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:03:15,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 1892 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:03:15,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:03:16,316 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-03 04:03:16,316 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 04:03:16,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:03:16,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:03:17,216 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 04:03:17,216 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:03:17,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598495995] [2021-11-03 04:03:17,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598495995] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:03:17,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:03:17,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-03 04:03:17,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879096163] [2021-11-03 04:03:17,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:03:17,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:03:17,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:03:17,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:03:17,218 INFO L87 Difference]: Start difference. First operand 360 states and 461 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:03:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:03:39,648 INFO L93 Difference]: Finished difference Result 1119 states and 1417 transitions. [2021-11-03 04:03:39,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:03:39,651 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-03 04:03:39,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:03:39,656 INFO L225 Difference]: With dead ends: 1119 [2021-11-03 04:03:39,656 INFO L226 Difference]: Without dead ends: 779 [2021-11-03 04:03:39,658 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 101 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 04:03:39,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2021-11-03 04:03:39,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 442. [2021-11-03 04:03:39,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 427 states have (on average 1.325526932084309) internal successors, (566), 441 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:03:39,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 566 transitions. [2021-11-03 04:03:39,677 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 566 transitions. Word has length 54 [2021-11-03 04:03:39,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:03:39,677 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 566 transitions. [2021-11-03 04:03:39,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:03:39,678 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 566 transitions. [2021-11-03 04:03:39,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 04:03:39,679 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:03:39,679 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] [2021-11-03 04:03:39,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-03 04:03:39,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:03:39,896 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-03 04:03:39,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:03:39,896 INFO L85 PathProgramCache]: Analyzing trace with hash 51420771, now seen corresponding path program 1 times [2021-11-03 04:03:39,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:03:39,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448085039] [2021-11-03 04:03:39,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:03:39,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:03:39,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:03:39,900 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:03:39,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:03:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:03:44,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 1889 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 04:03:44,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:03:44,732 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-03 04:03:44,732 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 04:03:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:03:45,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:03:46,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:03:46,364 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:03:46,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448085039] [2021-11-03 04:03:46,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448085039] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:03:46,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:03:46,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2021-11-03 04:03:46,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144495237] [2021-11-03 04:03:46,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:03:46,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:03:46,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:03:46,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:03:46,366 INFO L87 Difference]: Start difference. First operand 442 states and 566 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:04:20,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:04:20,339 INFO L93 Difference]: Finished difference Result 1364 states and 1659 transitions. [2021-11-03 04:04:20,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 04:04:20,342 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-03 04:04:20,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:04:20,348 INFO L225 Difference]: With dead ends: 1364 [2021-11-03 04:04:20,348 INFO L226 Difference]: Without dead ends: 823 [2021-11-03 04:04:20,350 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2021-11-03 04:04:20,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-11-03 04:04:20,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 434. [2021-11-03 04:04:20,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 419 states have (on average 1.2649164677804297) internal successors, (530), 433 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:04:20,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 530 transitions. [2021-11-03 04:04:20,371 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 530 transitions. Word has length 54 [2021-11-03 04:04:20,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:04:20,371 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 530 transitions. [2021-11-03 04:04:20,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:04:20,371 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 530 transitions. [2021-11-03 04:04:20,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-03 04:04:20,372 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:04:20,372 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:04:20,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:04:20,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:04:20,588 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-03 04:04:20,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:04:20,588 INFO L85 PathProgramCache]: Analyzing trace with hash 184697132, now seen corresponding path program 1 times [2021-11-03 04:04:20,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:04:20,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873871289] [2021-11-03 04:04:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:04:20,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:04:20,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:04:20,593 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:04:20,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f3cbd57-e1ee-41c8-b091-91cbe355b755/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:04:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:04:25,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 1920 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-03 04:04:25,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:04:28,250 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-03 04:04:28,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 28 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 197 treesize of output 69 [2021-11-03 04:04:28,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:04:28,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:05:05,426 WARN L207 SmtUtils]: Spent 32.85 s on a formula simplification. DAG size of input: 1166 DAG size of output: 513 [2021-11-03 04:05:05,435 INFO L354 Elim1Store]: treesize reduction 2280, result has 39.2 percent of original size [2021-11-03 04:05:05,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 24 select indices, 24 select index equivalence classes, 0 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 276 case distinctions, treesize of input 252 treesize of output 1538