./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_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_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/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_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/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_44fb1daf-c9a5-47dc-8000-b64aefc32e79/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 aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:06:37,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:06:37,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:06:37,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:06:37,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:06:37,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:06:37,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:06:37,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:06:37,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:06:37,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:06:37,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:06:37,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:06:37,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:06:37,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:06:37,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:06:37,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:06:37,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:06:37,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:06:37,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:06:37,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:06:37,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:06:37,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:06:37,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:06:37,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:06:37,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:06:37,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:06:37,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:06:37,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:06:37,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:06:37,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:06:37,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:06:37,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:06:37,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:06:37,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:06:37,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:06:37,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:06:37,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:06:37,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:06:37,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:06:37,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:06:37,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:06:37,591 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:06:37,619 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:06:37,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:06:37,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:06:37,621 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:06:37,621 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:06:37,621 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:06:37,622 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:06:37,622 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:06:37,626 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:06:37,626 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:06:37,626 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:06:37,627 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:06:37,627 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:06:37,627 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:06:37,627 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:06:37,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:06:37,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:06:37,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:06:37,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:06:37,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:06:37,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:06:37,631 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:06:37,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:06:37,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:06:37,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:06:37,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:06:37,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:06:37,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:06:37,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:06:37,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:06:37,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:06:37,635 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:06:37,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:06:37,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:06:37,636 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:06:37,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:06:37,636 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_44fb1daf-c9a5-47dc-8000-b64aefc32e79/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 [2021-11-03 04:06:37,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:06:37,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:06:37,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:06:37,930 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:06:37,931 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:06:37,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-03 04:06:38,014 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/data/dc354eb85/cf497a5e55ce497d962430ed69261c7e/FLAGd915be890 [2021-11-03 04:06:38,914 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:06:38,915 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-03 04:06:38,959 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/data/dc354eb85/cf497a5e55ce497d962430ed69261c7e/FLAGd915be890 [2021-11-03 04:06:39,405 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/data/dc354eb85/cf497a5e55ce497d962430ed69261c7e [2021-11-03 04:06:39,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:06:39,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:06:39,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:06:39,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:06:39,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:06:39,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:39" (1/1) ... [2021-11-03 04:06:39,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f76686a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:39, skipping insertion in model container [2021-11-03 04:06:39,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:39" (1/1) ... [2021-11-03 04:06:39,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:06:39,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:06:39,817 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_44fb1daf-c9a5-47dc-8000-b64aefc32e79/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-03 04:06:39,827 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_44fb1daf-c9a5-47dc-8000-b64aefc32e79/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-03 04:06:39,859 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:06:39,874 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:06:40,875 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:40,876 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:40,876 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:40,878 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:40,879 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:40,893 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:40,894 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:40,896 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:40,897 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:41,308 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:06:41,309 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:06:41,310 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:06:41,312 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:06:41,313 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:06:41,314 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:06:41,315 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:06:41,316 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:06:41,316 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:06:41,317 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:06:41,496 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:06:41,512 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 04:06:41,518 INFO L168 Benchmark]: Toolchain (without parser) took 2105.64 ms. Allocated memory was 113.2 MB in the beginning and 138.4 MB in the end (delta: 25.2 MB). Free memory was 74.0 MB in the beginning and 78.6 MB in the end (delta: -4.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:06:41,519 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 113.2 MB. Free memory is still 68.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:06:41,520 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2101.61 ms. Allocated memory was 113.2 MB in the beginning and 138.4 MB in the end (delta: 25.2 MB). Free memory was 74.0 MB in the beginning and 78.6 MB in the end (delta: -4.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:06:41,522 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 113.2 MB. Free memory is still 68.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2101.61 ms. Allocated memory was 113.2 MB in the beginning and 138.4 MB in the end (delta: 25.2 MB). Free memory was 74.0 MB in the beginning and 78.6 MB in the end (delta: -4.6 MB). Peak memory consumption was 23.1 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_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/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_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/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_44fb1daf-c9a5-47dc-8000-b64aefc32e79/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 aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:06:43,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:06:43,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:06:43,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:06:43,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:06:43,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:06:43,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:06:43,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:06:43,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:06:43,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:06:43,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:06:43,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:06:43,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:06:43,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:06:43,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:06:43,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:06:43,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:06:43,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:06:43,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:06:43,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:06:43,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:06:43,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:06:43,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:06:43,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:06:43,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:06:43,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:06:43,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:06:43,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:06:43,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:06:43,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:06:43,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:06:43,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:06:43,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:06:43,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:06:43,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:06:43,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:06:43,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:06:43,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:06:43,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:06:43,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:06:43,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:06:43,872 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:06:43,921 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:06:43,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:06:43,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:06:43,923 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:06:43,924 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:06:43,924 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:06:43,924 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:06:43,924 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:06:43,925 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:06:43,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:06:43,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:06:43,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:06:43,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:06:43,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:06:43,929 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:06:43,929 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:06:43,929 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:06:43,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:06:43,930 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:06:43,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:06:43,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:06:43,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:06:43,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:06:43,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:06:43,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:06:43,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:06:43,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:06:43,932 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:06:43,933 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:06:43,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:06:43,933 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:06:43,934 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:06:43,934 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_44fb1daf-c9a5-47dc-8000-b64aefc32e79/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 [2021-11-03 04:06:44,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:06:44,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:06:44,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:06:44,385 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:06:44,386 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:06:44,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-03 04:06:44,453 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/data/5a542feaa/848dcb42b83b4d9db976e674a3b128db/FLAGb1d2e886f [2021-11-03 04:06:45,368 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:06:45,369 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-03 04:06:45,420 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/data/5a542feaa/848dcb42b83b4d9db976e674a3b128db/FLAGb1d2e886f [2021-11-03 04:06:45,878 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/data/5a542feaa/848dcb42b83b4d9db976e674a3b128db [2021-11-03 04:06:45,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:06:45,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:06:45,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:06:45,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:06:45,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:06:45,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:45" (1/1) ... [2021-11-03 04:06:45,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418a8357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:45, skipping insertion in model container [2021-11-03 04:06:45,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:45" (1/1) ... [2021-11-03 04:06:45,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:06:46,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:06:46,412 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_44fb1daf-c9a5-47dc-8000-b64aefc32e79/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-03 04:06:46,419 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_44fb1daf-c9a5-47dc-8000-b64aefc32e79/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-03 04:06:46,442 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:06:46,448 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:06:47,619 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:47,621 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:47,622 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:47,624 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:47,625 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:47,656 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:47,658 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:47,660 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:47,661 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:48,112 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:06:48,113 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:06:48,115 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:06:48,116 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:06:48,118 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:06:48,118 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:06:48,119 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:06:48,120 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:06:48,121 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:06:48,121 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:06:48,292 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:06:48,399 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:48,399 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:48,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:06:48,589 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:06:48,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:06:48,663 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_44fb1daf-c9a5-47dc-8000-b64aefc32e79/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-03 04:06:48,663 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_44fb1daf-c9a5-47dc-8000-b64aefc32e79/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-03 04:06:48,665 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:06:48,666 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:06:48,738 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:48,738 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:48,739 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:48,739 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:48,740 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:48,759 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:48,763 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:48,766 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:48,766 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:48,835 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:06:48,836 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:06:48,837 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:06:48,838 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:06:48,839 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:06:48,840 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:06:48,844 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:06:48,844 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:06:48,845 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:06:48,845 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:06:48,879 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:06:48,978 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:48,979 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:49,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:06:49,067 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:06:49,092 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_44fb1daf-c9a5-47dc-8000-b64aefc32e79/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-03 04:06:49,092 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_44fb1daf-c9a5-47dc-8000-b64aefc32e79/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-03 04:06:49,094 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:06:49,095 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:06:49,131 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:49,132 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:49,132 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:49,132 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:49,133 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:49,138 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:49,138 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:49,139 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:49,140 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:49,192 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:06:49,193 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:06:49,194 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:06:49,194 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:06:49,195 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:06:49,195 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:06:49,196 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:06:49,196 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:06:49,197 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:06:49,197 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:06:49,214 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:06:49,263 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:49,264 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:06:49,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:06:49,766 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:06:49,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:49 WrapperNode [2021-11-03 04:06:49,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:06:49,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:06:49,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:06:49,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:06:49,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:49" (1/1) ... [2021-11-03 04:06:49,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:49" (1/1) ... [2021-11-03 04:06:50,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:06:50,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:06:50,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:06:50,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:06:50,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:49" (1/1) ... [2021-11-03 04:06:50,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:49" (1/1) ... [2021-11-03 04:06:50,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:49" (1/1) ... [2021-11-03 04:06:50,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:49" (1/1) ... [2021-11-03 04:06:50,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:49" (1/1) ... [2021-11-03 04:06:50,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:49" (1/1) ... [2021-11-03 04:06:50,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:49" (1/1) ... [2021-11-03 04:06:50,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:06:50,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:06:50,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:06:50,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:06:50,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:49" (1/1) ... [2021-11-03 04:06:50,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:06:50,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:06:50,251 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:06:50,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:06:50,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:06:50,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:06:50,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 04:06:50,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 04:06:50,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:06:50,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:06:50,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:06:50,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:06:50,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:06:50,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 04:06:50,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:06:50,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:06:50,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 04:06:50,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 04:06:50,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:07:05,332 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:07:05,333 INFO L299 CfgBuilder]: Removed 123 assume(true) statements. [2021-11-03 04:07:05,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:07:05 BoogieIcfgContainer [2021-11-03 04:07:05,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:07:05,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:07:05,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:07:05,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:07:05,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:06:45" (1/3) ... [2021-11-03 04:07:05,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d958f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:07:05, skipping insertion in model container [2021-11-03 04:07:05,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:49" (2/3) ... [2021-11-03 04:07:05,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d958f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:07:05, skipping insertion in model container [2021-11-03 04:07:05,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:07:05" (3/3) ... [2021-11-03 04:07:05,343 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_harness.i [2021-11-03 04:07:05,348 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:07:05,349 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-03 04:07:05,416 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:07:05,430 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 04:07:05,432 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-03 04:07:05,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 260 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 259 states have internal predecessors, (358), 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 04:07:05,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-03 04:07:05,469 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:05,470 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] [2021-11-03 04:07:05,470 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:07:05,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:05,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1026196011, now seen corresponding path program 1 times [2021-11-03 04:07:05,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:05,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258900444] [2021-11-03 04:07:05,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:05,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:05,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:05,512 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:05,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:07:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:09,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 1822 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:07:09,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:10,093 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 04:07:10,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:10,286 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 04:07:10,287 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:10,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258900444] [2021-11-03 04:07:10,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258900444] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:10,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:10,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:07:10,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448725006] [2021-11-03 04:07:10,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:07:10,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:10,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:07:10,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:07:10,309 INFO L87 Difference]: Start difference. First operand has 260 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 259 states have internal predecessors, (358), 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 21.5) internal successors, (43), 2 states have internal predecessors, (43), 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 04:07:10,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:10,346 INFO L93 Difference]: Finished difference Result 516 states and 711 transitions. [2021-11-03 04:07:10,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:07:10,347 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 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 43 [2021-11-03 04:07:10,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:10,359 INFO L225 Difference]: With dead ends: 516 [2021-11-03 04:07:10,359 INFO L226 Difference]: Without dead ends: 255 [2021-11-03 04:07:10,363 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 84 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 04:07:10,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-03 04:07:10,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-03 04:07:10,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 238 states have (on average 1.3529411764705883) internal successors, (322), 254 states have internal predecessors, (322), 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 04:07:10,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 322 transitions. [2021-11-03 04:07:10,412 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 322 transitions. Word has length 43 [2021-11-03 04:07:10,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:10,413 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 322 transitions. [2021-11-03 04:07:10,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 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 04:07:10,413 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 322 transitions. [2021-11-03 04:07:10,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-03 04:07:10,415 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:10,415 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] [2021-11-03 04:07:10,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:10,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:10,628 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:07:10,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:10,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1821286743, now seen corresponding path program 1 times [2021-11-03 04:07:10,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:10,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458502089] [2021-11-03 04:07:10,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:10,637 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:10,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:10,638 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:10,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:07:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:14,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 1822 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:07:14,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:15,052 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 04:07:15,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:15,261 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 04:07:15,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:15,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458502089] [2021-11-03 04:07:15,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458502089] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:15,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:15,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:07:15,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577825118] [2021-11-03 04:07:15,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:07:15,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:15,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:07:15,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:07:15,265 INFO L87 Difference]: Start difference. First operand 255 states and 322 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 04:07:15,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:15,595 INFO L93 Difference]: Finished difference Result 484 states and 610 transitions. [2021-11-03 04:07:15,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:07:15,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 43 [2021-11-03 04:07:15,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:15,605 INFO L225 Difference]: With dead ends: 484 [2021-11-03 04:07:15,605 INFO L226 Difference]: Without dead ends: 255 [2021-11-03 04:07:15,610 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 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 04:07:15,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-03 04:07:15,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-03 04:07:15,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 238 states have (on average 1.3403361344537814) internal successors, (319), 254 states have internal predecessors, (319), 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 04:07:15,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 319 transitions. [2021-11-03 04:07:15,639 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 319 transitions. Word has length 43 [2021-11-03 04:07:15,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:15,640 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 319 transitions. [2021-11-03 04:07:15,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 04:07:15,640 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 319 transitions. [2021-11-03 04:07:15,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 04:07:15,648 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:15,649 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] [2021-11-03 04:07:15,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:15,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:15,864 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:07:15,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:15,865 INFO L85 PathProgramCache]: Analyzing trace with hash 704440679, now seen corresponding path program 1 times [2021-11-03 04:07:15,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:15,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893437232] [2021-11-03 04:07:15,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:15,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:15,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:15,874 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:15,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:07:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:20,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 1845 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:07:20,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:20,236 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 04:07:20,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:20,442 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 04:07:20,443 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:20,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893437232] [2021-11-03 04:07:20,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893437232] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:20,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:20,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:07:20,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243701556] [2021-11-03 04:07:20,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:07:20,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:20,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:07:20,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:07:20,445 INFO L87 Difference]: Start difference. First operand 255 states and 319 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 04:07:20,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:20,774 INFO L93 Difference]: Finished difference Result 535 states and 676 transitions. [2021-11-03 04:07:20,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:07:20,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2021-11-03 04:07:20,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:20,784 INFO L225 Difference]: With dead ends: 535 [2021-11-03 04:07:20,784 INFO L226 Difference]: Without dead ends: 305 [2021-11-03 04:07:20,787 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 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 04:07:20,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-11-03 04:07:20,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 265. [2021-11-03 04:07:20,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 248 states have (on average 1.3266129032258065) internal successors, (329), 264 states have internal predecessors, (329), 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 04:07:20,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 329 transitions. [2021-11-03 04:07:20,814 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 329 transitions. Word has length 55 [2021-11-03 04:07:20,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:20,814 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 329 transitions. [2021-11-03 04:07:20,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 04:07:20,815 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 329 transitions. [2021-11-03 04:07:20,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 04:07:20,826 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:20,826 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] [2021-11-03 04:07:20,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:21,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:21,027 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:07:21,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:21,028 INFO L85 PathProgramCache]: Analyzing trace with hash 2076247977, now seen corresponding path program 1 times [2021-11-03 04:07:21,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:21,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233918244] [2021-11-03 04:07:21,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:21,032 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:21,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:21,034 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:21,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:07:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:25,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 1848 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 04:07:25,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:25,456 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 04:07:25,838 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 04:07:25,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:26,219 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 04:07:26,460 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 04:07:26,460 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:26,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233918244] [2021-11-03 04:07:26,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233918244] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:26,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:26,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 13 [2021-11-03 04:07:26,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429764878] [2021-11-03 04:07:26,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 04:07:26,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:26,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 04:07:26,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:07:26,462 INFO L87 Difference]: Start difference. First operand 265 states and 329 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 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 04:07:33,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:33,000 INFO L93 Difference]: Finished difference Result 535 states and 668 transitions. [2021-11-03 04:07:33,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:07:33,003 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 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 55 [2021-11-03 04:07:33,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:33,005 INFO L225 Difference]: With dead ends: 535 [2021-11-03 04:07:33,005 INFO L226 Difference]: Without dead ends: 297 [2021-11-03 04:07:33,006 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2021-11-03 04:07:33,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-03 04:07:33,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 263. [2021-11-03 04:07:33,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 246 states have (on average 1.3252032520325203) internal successors, (326), 262 states have internal predecessors, (326), 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 04:07:33,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 326 transitions. [2021-11-03 04:07:33,019 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 326 transitions. Word has length 55 [2021-11-03 04:07:33,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:33,019 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 326 transitions. [2021-11-03 04:07:33,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 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 04:07:33,020 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 326 transitions. [2021-11-03 04:07:33,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 04:07:33,020 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:33,021 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] [2021-11-03 04:07:33,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:33,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:33,244 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:07:33,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:33,245 INFO L85 PathProgramCache]: Analyzing trace with hash 759666527, now seen corresponding path program 1 times [2021-11-03 04:07:33,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:33,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701486181] [2021-11-03 04:07:33,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:33,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:33,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:33,250 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:33,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:07:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:37,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:07:37,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:37,651 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-03 04:07:37,651 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 04:07:37,874 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 04:07:37,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:38,474 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 04:07:38,474 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:38,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701486181] [2021-11-03 04:07:38,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [701486181] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:38,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:38,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-03 04:07:38,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531039247] [2021-11-03 04:07:38,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:07:38,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:38,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:07:38,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:07:38,477 INFO L87 Difference]: Start difference. First operand 263 states and 326 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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 04:07:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:48,100 INFO L93 Difference]: Finished difference Result 776 states and 958 transitions. [2021-11-03 04:07:48,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:07:48,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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 59 [2021-11-03 04:07:48,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:48,108 INFO L225 Difference]: With dead ends: 776 [2021-11-03 04:07:48,109 INFO L226 Difference]: Without dead ends: 533 [2021-11-03 04:07:48,110 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:07:48,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-11-03 04:07:48,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 296. [2021-11-03 04:07:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 279 states have (on average 1.3189964157706093) internal successors, (368), 295 states have internal predecessors, (368), 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 04:07:48,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 368 transitions. [2021-11-03 04:07:48,125 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 368 transitions. Word has length 59 [2021-11-03 04:07:48,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:48,126 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 368 transitions. [2021-11-03 04:07:48,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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 04:07:48,126 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 368 transitions. [2021-11-03 04:07:48,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 04:07:48,127 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:48,127 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:07:48,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:48,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:48,348 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:07:48,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:48,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1183313249, now seen corresponding path program 1 times [2021-11-03 04:07:48,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:48,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843151122] [2021-11-03 04:07:48,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:48,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:48,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:48,353 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:48,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:07:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:52,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 04:07:52,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:52,739 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-03 04:07:52,740 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 04:07:53,233 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 04:07:53,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:53,919 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 04:07:53,919 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:53,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843151122] [2021-11-03 04:07:53,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [843151122] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:53,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:53,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2021-11-03 04:07:53,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758407949] [2021-11-03 04:07:53,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:07:53,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:53,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:07:53,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:07:53,922 INFO L87 Difference]: Start difference. First operand 296 states and 368 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 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 04:08:13,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:08:13,136 INFO L93 Difference]: Finished difference Result 1009 states and 1216 transitions. [2021-11-03 04:08:13,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 04:08:13,139 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 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 59 [2021-11-03 04:08:13,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:08:13,143 INFO L225 Difference]: With dead ends: 1009 [2021-11-03 04:08:13,144 INFO L226 Difference]: Without dead ends: 698 [2021-11-03 04:08:13,145 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2021-11-03 04:08:13,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2021-11-03 04:08:13,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 294. [2021-11-03 04:08:13,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 277 states have (on average 1.2924187725631768) internal successors, (358), 293 states have internal predecessors, (358), 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 04:08:13,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 358 transitions. [2021-11-03 04:08:13,160 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 358 transitions. Word has length 59 [2021-11-03 04:08:13,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:08:13,161 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 358 transitions. [2021-11-03 04:08:13,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 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 04:08:13,161 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 358 transitions. [2021-11-03 04:08:13,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 04:08:13,162 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:08:13,162 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] [2021-11-03 04:08:13,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:08:13,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:08:13,384 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:08:13,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:08:13,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1762439080, now seen corresponding path program 1 times [2021-11-03 04:08:13,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:08:13,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196879905] [2021-11-03 04:08:13,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:08:13,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:08:13,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:08:13,389 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:08:13,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:08:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:08:17,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:08:17,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:08:17,809 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 04:08:17,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:08:17,991 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 04:08:17,991 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:08:17,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196879905] [2021-11-03 04:08:17,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196879905] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:08:17,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:08:17,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:08:17,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45394075] [2021-11-03 04:08:17,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:08:17,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:08:17,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:08:17,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:08:17,993 INFO L87 Difference]: Start difference. First operand 294 states and 358 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 04:08:18,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:08:18,253 INFO L93 Difference]: Finished difference Result 539 states and 658 transitions. [2021-11-03 04:08:18,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:08:18,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 61 [2021-11-03 04:08:18,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:08:18,258 INFO L225 Difference]: With dead ends: 539 [2021-11-03 04:08:18,258 INFO L226 Difference]: Without dead ends: 294 [2021-11-03 04:08:18,259 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 118 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 04:08:18,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-03 04:08:18,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2021-11-03 04:08:18,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 277 states have (on average 1.2851985559566788) internal successors, (356), 293 states have internal predecessors, (356), 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 04:08:18,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 356 transitions. [2021-11-03 04:08:18,271 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 356 transitions. Word has length 61 [2021-11-03 04:08:18,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:08:18,273 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 356 transitions. [2021-11-03 04:08:18,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 04:08:18,274 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 356 transitions. [2021-11-03 04:08:18,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-03 04:08:18,274 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:08:18,274 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:08:18,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:08:18,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:08:18,492 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:08:18,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:08:18,493 INFO L85 PathProgramCache]: Analyzing trace with hash 895515731, now seen corresponding path program 1 times [2021-11-03 04:08:18,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:08:18,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648928289] [2021-11-03 04:08:18,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:08:18,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:08:18,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:08:18,499 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:08:18,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:08:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:08:23,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:08:23,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:08:23,289 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 04:08:23,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:08:23,523 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 04:08:23,523 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:08:23,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648928289] [2021-11-03 04:08:23,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648928289] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:08:23,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:08:23,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:08:23,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129623542] [2021-11-03 04:08:23,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:08:23,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:08:23,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:08:23,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:08:23,526 INFO L87 Difference]: Start difference. First operand 294 states and 356 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 04:08:24,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:08:24,005 INFO L93 Difference]: Finished difference Result 503 states and 610 transitions. [2021-11-03 04:08:24,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:08:24,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-03 04:08:24,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:08:24,010 INFO L225 Difference]: With dead ends: 503 [2021-11-03 04:08:24,010 INFO L226 Difference]: Without dead ends: 294 [2021-11-03 04:08:24,011 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:08:24,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-03 04:08:24,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2021-11-03 04:08:24,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 277 states have (on average 1.2743682310469313) internal successors, (353), 293 states have internal predecessors, (353), 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 04:08:24,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 353 transitions. [2021-11-03 04:08:24,022 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 353 transitions. Word has length 63 [2021-11-03 04:08:24,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:08:24,023 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 353 transitions. [2021-11-03 04:08:24,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 04:08:24,023 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 353 transitions. [2021-11-03 04:08:24,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 04:08:24,024 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:08:24,024 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:08:24,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:08:24,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:08:24,237 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:08:24,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:08:24,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1361244530, now seen corresponding path program 1 times [2021-11-03 04:08:24,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:08:24,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27133277] [2021-11-03 04:08:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:08:24,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:08:24,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:08:24,242 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:08:24,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:08:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:08:28,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-03 04:08:28,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:08:29,738 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:08:29,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 99 treesize of output 35 [2021-11-03 04:08:29,840 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 04:08:29,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:08:43,167 WARN L207 SmtUtils]: Spent 12.37 s on a formula simplification. DAG size of input: 523 DAG size of output: 269 [2021-11-03 04:08:43,172 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-03 04:08:43,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 129 treesize of output 772 [2021-11-03 04:19:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:19:21,518 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:19:21,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27133277] [2021-11-03 04:19:21,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27133277] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:21,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:21,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 13 [2021-11-03 04:19:21,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921440936] [2021-11-03 04:19:21,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 04:19:21,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:19:21,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 04:19:21,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:19:21,521 INFO L87 Difference]: Start difference. First operand 294 states and 353 transitions. Second operand has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 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 04:19:33,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:33,517 INFO L93 Difference]: Finished difference Result 707 states and 841 transitions. [2021-11-03 04:19:33,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:19:33,518 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 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 65 [2021-11-03 04:19:33,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:33,521 INFO L225 Difference]: With dead ends: 707 [2021-11-03 04:19:33,521 INFO L226 Difference]: Without dead ends: 551 [2021-11-03 04:19:33,522 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:19:33,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-11-03 04:19:33,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 467. [2021-11-03 04:19:33,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 450 states have (on average 1.288888888888889) internal successors, (580), 466 states have internal predecessors, (580), 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 04:19:33,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 580 transitions. [2021-11-03 04:19:33,541 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 580 transitions. Word has length 65 [2021-11-03 04:19:33,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:33,542 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 580 transitions. [2021-11-03 04:19:33,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 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 04:19:33,542 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 580 transitions. [2021-11-03 04:19:33,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 04:19:33,543 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:33,544 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] [2021-11-03 04:19:33,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:19:33,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:19:33,760 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 04:19:33,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:33,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1462342980, now seen corresponding path program 1 times [2021-11-03 04:19:33,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:19:33,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583014953] [2021-11-03 04:19:33,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:33,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:19:33,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:19:33,768 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:19:33,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44fb1daf-c9a5-47dc-8000-b64aefc32e79/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:19:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:38,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-03 04:19:38,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:19:42,066 INFO L354 Elim1Store]: treesize reduction 3186, result has 0.0 percent of original size [2021-11-03 04:19:42,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 24 select indices, 24 select index equivalence classes, 28 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 276 case distinctions, treesize of input 355 treesize of output 103 [2021-11-03 04:19:42,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:19:42,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:13,020 WARN L207 SmtUtils]: Spent 1.32 m on a formula simplification. DAG size of input: 2070 DAG size of output: 763 [2021-11-03 04:21:13,025 INFO L354 Elim1Store]: treesize reduction 4519, result has 32.8 percent of original size [2021-11-03 04:21:13,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 32 select indices, 32 select index equivalence classes, 0 disjoint index pairs (out of 496 index pairs), introduced 32 new quantified variables, introduced 496 case distinctions, treesize of input 384 treesize of output 2311