./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/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_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/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_94a566f5-bf53-4959-b203-92fd0ccb47fc/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 b64b813c3d856efe8cd859d380d09d4b682c371a0a165a5a5fe0d11dc206dad7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:54:08,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:54:08,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:54:08,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:54:08,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:54:08,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:54:08,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:54:08,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:54:08,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:54:08,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:54:08,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:54:08,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:54:08,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:54:08,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:54:08,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:54:08,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:54:08,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:54:08,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:54:08,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:54:08,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:54:08,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:54:08,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:54:08,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:54:08,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:54:08,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:54:08,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:54:08,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:54:08,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:54:08,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:54:08,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:54:08,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:54:08,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:54:08,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:54:08,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:54:08,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:54:08,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:54:08,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:54:08,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:54:08,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:54:08,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:54:08,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:54:08,273 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 03:54:08,340 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:54:08,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:54:08,343 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:54:08,344 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:54:08,344 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:54:08,344 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:54:08,345 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:54:08,345 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:54:08,345 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:54:08,345 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:54:08,347 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:54:08,347 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:54:08,348 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:54:08,348 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:54:08,348 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:54:08,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:54:08,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:54:08,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:54:08,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:54:08,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:54:08,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:54:08,351 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:54:08,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:54:08,352 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:54:08,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:54:08,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:54:08,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:54:08,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:54:08,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:54:08,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:54:08,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:54:08,354 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:54:08,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:54:08,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:54:08,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:54:08,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:54:08,356 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_94a566f5-bf53-4959-b203-92fd0ccb47fc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b64b813c3d856efe8cd859d380d09d4b682c371a0a165a5a5fe0d11dc206dad7 [2021-11-03 03:54:08,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:54:08,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:54:08,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:54:08,709 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:54:08,710 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:54:08,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i [2021-11-03 03:54:08,810 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/data/2a1851cc3/a12a295989df4168bf7944dcfef6d0cd/FLAG190bb411e [2021-11-03 03:54:09,824 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:54:09,825 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i [2021-11-03 03:54:09,873 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/data/2a1851cc3/a12a295989df4168bf7944dcfef6d0cd/FLAG190bb411e [2021-11-03 03:54:10,221 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/data/2a1851cc3/a12a295989df4168bf7944dcfef6d0cd [2021-11-03 03:54:10,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:54:10,226 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:54:10,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:54:10,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:54:10,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:54:10,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:54:10" (1/1) ... [2021-11-03 03:54:10,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78bb63c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:10, skipping insertion in model container [2021-11-03 03:54:10,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:54:10" (1/1) ... [2021-11-03 03:54:10,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:54:10,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:54:10,765 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_94a566f5-bf53-4959-b203-92fd0ccb47fc/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4493,4506] [2021-11-03 03:54:10,774 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_94a566f5-bf53-4959-b203-92fd0ccb47fc/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4553,4566] [2021-11-03 03:54:10,803 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 03:54:10,810 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 03:54:12,014 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:12,015 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:12,016 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:12,017 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:12,019 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:12,038 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:12,039 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:12,041 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:12,042 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:12,638 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 03:54:12,639 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 03:54:12,641 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 03:54:12,642 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 03:54:12,649 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 03:54:12,656 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 03:54:12,659 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 03:54:12,660 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 03:54:12,662 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 03:54:12,667 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 03:54:12,917 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 03:54:12,955 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.IllegalArgumentException: byte size smaller than 1 makes no sense at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:194) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1054) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:962) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1369) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:249) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.translateInitializer(CHandler.java:2938) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2798) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2101) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:143) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1119) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:211) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1068) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1452) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3247) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2321) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:594) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 03:54:12,963 INFO L168 Benchmark]: Toolchain (without parser) took 2734.65 ms. Allocated memory was 102.8 MB in the beginning and 132.1 MB in the end (delta: 29.4 MB). Free memory was 61.0 MB in the beginning and 70.5 MB in the end (delta: -9.5 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:54:12,963 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 102.8 MB. Free memory is still 59.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:54:12,965 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2731.45 ms. Allocated memory was 102.8 MB in the beginning and 132.1 MB in the end (delta: 29.4 MB). Free memory was 60.8 MB in the beginning and 70.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:54:12,967 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 102.8 MB. Free memory is still 59.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2731.45 ms. Allocated memory was 102.8 MB in the beginning and 132.1 MB in the end (delta: 29.4 MB). Free memory was 60.8 MB in the beginning and 70.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: IllegalArgumentException: byte size smaller than 1 makes no sense de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: IllegalArgumentException: byte size smaller than 1 makes no sense: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:194) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/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_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/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_94a566f5-bf53-4959-b203-92fd0ccb47fc/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 b64b813c3d856efe8cd859d380d09d4b682c371a0a165a5a5fe0d11dc206dad7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:54:15,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:54:15,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:54:15,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:54:15,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:54:15,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:54:15,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:54:15,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:54:15,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:54:15,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:54:15,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:54:15,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:54:15,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:54:15,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:54:15,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:54:15,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:54:15,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:54:15,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:54:15,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:54:15,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:54:15,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:54:15,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:54:15,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:54:15,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:54:15,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:54:15,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:54:15,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:54:15,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:54:15,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:54:15,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:54:15,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:54:16,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:54:16,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:54:16,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:54:16,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:54:16,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:54:16,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:54:16,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:54:16,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:54:16,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:54:16,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:54:16,014 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 03:54:16,077 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:54:16,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:54:16,079 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:54:16,079 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:54:16,079 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:54:16,080 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:54:16,080 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:54:16,080 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:54:16,080 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:54:16,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:54:16,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:54:16,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:54:16,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:54:16,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:54:16,083 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:54:16,083 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:54:16,083 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:54:16,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:54:16,084 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:54:16,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:54:16,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:54:16,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:54:16,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:54:16,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:54:16,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:54:16,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:54:16,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:54:16,086 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:54:16,086 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:54:16,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:54:16,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:54:16,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:54:16,087 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_94a566f5-bf53-4959-b203-92fd0ccb47fc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b64b813c3d856efe8cd859d380d09d4b682c371a0a165a5a5fe0d11dc206dad7 [2021-11-03 03:54:16,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:54:16,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:54:16,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:54:16,610 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:54:16,611 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:54:16,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i [2021-11-03 03:54:16,703 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/data/38b4c119f/d5b0c80b024642278abcd8c81c6c7575/FLAG42f8a577b [2021-11-03 03:54:17,859 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:54:17,860 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i [2021-11-03 03:54:17,910 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/data/38b4c119f/d5b0c80b024642278abcd8c81c6c7575/FLAG42f8a577b [2021-11-03 03:54:18,218 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/data/38b4c119f/d5b0c80b024642278abcd8c81c6c7575 [2021-11-03 03:54:18,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:54:18,224 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:54:18,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:54:18,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:54:18,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:54:18,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:54:18" (1/1) ... [2021-11-03 03:54:18,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e040a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:18, skipping insertion in model container [2021-11-03 03:54:18,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:54:18" (1/1) ... [2021-11-03 03:54:18,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:54:18,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:54:18,886 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_94a566f5-bf53-4959-b203-92fd0ccb47fc/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4493,4506] [2021-11-03 03:54:18,895 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_94a566f5-bf53-4959-b203-92fd0ccb47fc/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4553,4566] [2021-11-03 03:54:18,927 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 03:54:18,936 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 03:54:20,297 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:20,298 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:20,299 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:20,300 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:20,302 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:20,320 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:20,324 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:20,326 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:20,329 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:20,972 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 03:54:20,974 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 03:54:20,975 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 03:54:20,977 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 03:54:20,979 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 03:54:20,992 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 03:54:20,993 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 03:54:20,997 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 03:54:20,999 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 03:54:21,005 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 03:54:21,214 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 03:54:21,417 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:21,418 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:21,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:54:21,556 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:54:21,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:54:21,639 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_94a566f5-bf53-4959-b203-92fd0ccb47fc/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4493,4506] [2021-11-03 03:54:21,639 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_94a566f5-bf53-4959-b203-92fd0ccb47fc/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4553,4566] [2021-11-03 03:54:21,641 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 03:54:21,642 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 03:54:21,704 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:21,705 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:21,705 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:21,706 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:21,707 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:21,715 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:21,715 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:21,717 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:21,717 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:21,764 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 03:54:21,766 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 03:54:21,767 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 03:54:21,768 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 03:54:21,779 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 03:54:21,780 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 03:54:21,781 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 03:54:21,781 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 03:54:21,782 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 03:54:21,782 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 03:54:21,817 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 03:54:21,962 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:21,963 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:21,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:54:22,043 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:54:22,069 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_94a566f5-bf53-4959-b203-92fd0ccb47fc/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4493,4506] [2021-11-03 03:54:22,079 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_94a566f5-bf53-4959-b203-92fd0ccb47fc/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4553,4566] [2021-11-03 03:54:22,113 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 03:54:22,114 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 03:54:22,160 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:22,161 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:22,161 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:22,162 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:22,163 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:22,170 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:22,175 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:22,176 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:22,177 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:22,219 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 03:54:22,220 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 03:54:22,220 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 03:54:22,221 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 03:54:22,222 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 03:54:22,223 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 03:54:22,223 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 03:54:22,224 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 03:54:22,224 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 03:54:22,225 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 03:54:22,284 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 03:54:22,424 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:22,425 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 03:54:22,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:54:22,914 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:54:22,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:22 WrapperNode [2021-11-03 03:54:22,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:54:22,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:54:22,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:54:22,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:54:22,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:22" (1/1) ... [2021-11-03 03:54:23,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:22" (1/1) ... [2021-11-03 03:54:23,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:54:23,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:54:23,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:54:23,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:54:23,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:22" (1/1) ... [2021-11-03 03:54:23,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:22" (1/1) ... [2021-11-03 03:54:23,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:22" (1/1) ... [2021-11-03 03:54:23,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:22" (1/1) ... [2021-11-03 03:54:23,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:22" (1/1) ... [2021-11-03 03:54:23,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:22" (1/1) ... [2021-11-03 03:54:23,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:22" (1/1) ... [2021-11-03 03:54:23,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:54:23,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:54:23,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:54:23,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:54:23,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:22" (1/1) ... [2021-11-03 03:54:23,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:54:23,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:54:23,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:54:23,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:54:23,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:54:23,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:54:23,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:54:23,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:54:23,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:54:23,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 03:54:23,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 03:54:23,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:54:23,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 03:54:23,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 03:54:23,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 03:54:25,026 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:54:25,026 INFO L299 CfgBuilder]: Removed 71 assume(true) statements. [2021-11-03 03:54:25,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:54:25 BoogieIcfgContainer [2021-11-03 03:54:25,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:54:25,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:54:25,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:54:25,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:54:25,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:54:18" (1/3) ... [2021-11-03 03:54:25,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e28934f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:54:25, skipping insertion in model container [2021-11-03 03:54:25,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:22" (2/3) ... [2021-11-03 03:54:25,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e28934f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:54:25, skipping insertion in model container [2021-11-03 03:54:25,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:54:25" (3/3) ... [2021-11-03 03:54:25,043 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_eq_c_str_harness.i [2021-11-03 03:54:25,051 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:54:25,051 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 03:54:25,114 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:54:25,119 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:54:25,119 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 03:54:25,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 80 states have (on average 1.4375) internal successors, (115), 85 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:25,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-03 03:54:25,146 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:25,147 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] [2021-11-03 03:54:25,147 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:54:25,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:25,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1267490943, now seen corresponding path program 1 times [2021-11-03 03:54:25,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:54:25,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173068876] [2021-11-03 03:54:25,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:25,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:54:25,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:54:25,178 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:54:25,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:54:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:25,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:54:25,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:25,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:54:25,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:25,692 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:54:25,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173068876] [2021-11-03 03:54:25,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173068876] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:25,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:25,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:54:25,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602995152] [2021-11-03 03:54:25,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:54:25,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:54:25,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:54:25,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:54:25,720 INFO L87 Difference]: Start difference. First operand has 86 states, 80 states have (on average 1.4375) internal successors, (115), 85 states have internal predecessors, (115), 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 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:25,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:25,760 INFO L93 Difference]: Finished difference Result 166 states and 222 transitions. [2021-11-03 03:54:25,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:54:25,762 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 22 [2021-11-03 03:54:25,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:25,774 INFO L225 Difference]: With dead ends: 166 [2021-11-03 03:54:25,774 INFO L226 Difference]: Without dead ends: 80 [2021-11-03 03:54:25,778 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:54:25,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-03 03:54:25,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-11-03 03:54:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 79 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:25,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2021-11-03 03:54:25,836 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 22 [2021-11-03 03:54:25,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:25,837 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2021-11-03 03:54:25,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:25,838 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2021-11-03 03:54:25,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-03 03:54:25,841 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:25,841 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] [2021-11-03 03:54:25,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:54:26,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:54:26,056 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:54:26,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:26,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1009325505, now seen corresponding path program 1 times [2021-11-03 03:54:26,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:54:26,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136696810] [2021-11-03 03:54:26,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:26,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:54:26,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:54:26,064 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:54:26,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:54:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:26,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:54:26,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:26,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:54:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:26,854 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:54:26,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136696810] [2021-11-03 03:54:26,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136696810] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:26,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:26,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:54:26,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127344140] [2021-11-03 03:54:26,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:54:26,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:54:26,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:54:26,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:54:26,861 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:26,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:26,958 INFO L93 Difference]: Finished difference Result 132 states and 153 transitions. [2021-11-03 03:54:26,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:54:26,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2021-11-03 03:54:26,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:26,964 INFO L225 Difference]: With dead ends: 132 [2021-11-03 03:54:26,965 INFO L226 Difference]: Without dead ends: 80 [2021-11-03 03:54:26,967 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:54:26,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-03 03:54:26,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-11-03 03:54:26,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.2133333333333334) internal successors, (91), 79 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:26,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2021-11-03 03:54:26,977 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 22 [2021-11-03 03:54:26,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:26,978 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2021-11-03 03:54:26,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:26,978 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2021-11-03 03:54:26,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-03 03:54:26,980 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:26,980 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] [2021-11-03 03:54:27,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:54:27,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:54:27,196 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:54:27,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:27,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1735715402, now seen corresponding path program 1 times [2021-11-03 03:54:27,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:54:27,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477550722] [2021-11-03 03:54:27,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:27,199 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:54:27,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:54:27,200 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:54:27,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:54:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:27,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 03:54:27,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:27,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:27,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:54:27,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:27,906 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:54:27,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477550722] [2021-11-03 03:54:27,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477550722] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:27,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:27,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-03 03:54:27,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108906101] [2021-11-03 03:54:27,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 03:54:27,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:54:27,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 03:54:27,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:54:27,913 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:28,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:28,129 INFO L93 Difference]: Finished difference Result 116 states and 128 transitions. [2021-11-03 03:54:28,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:54:28,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 31 [2021-11-03 03:54:28,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:28,134 INFO L225 Difference]: With dead ends: 116 [2021-11-03 03:54:28,134 INFO L226 Difference]: Without dead ends: 86 [2021-11-03 03:54:28,134 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:54:28,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-03 03:54:28,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2021-11-03 03:54:28,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.2) internal successors, (90), 79 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:28,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2021-11-03 03:54:28,159 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 31 [2021-11-03 03:54:28,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:28,160 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2021-11-03 03:54:28,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:28,162 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2021-11-03 03:54:28,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-03 03:54:28,164 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:28,169 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] [2021-11-03 03:54:28,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:54:28,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:54:28,391 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:54:28,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:28,391 INFO L85 PathProgramCache]: Analyzing trace with hash -475843332, now seen corresponding path program 1 times [2021-11-03 03:54:28,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:54:28,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091526938] [2021-11-03 03:54:28,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:28,393 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:54:28,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:54:28,396 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:54:28,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:54:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:28,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:54:28,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:28,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:28,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:54:28,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:28,906 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:54:28,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091526938] [2021-11-03 03:54:28,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091526938] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:28,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:28,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:54:28,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116839841] [2021-11-03 03:54:28,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:54:28,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:54:28,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:54:28,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:54:28,908 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:28,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:28,942 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2021-11-03 03:54:28,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:54:28,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 32 [2021-11-03 03:54:28,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:28,946 INFO L225 Difference]: With dead ends: 110 [2021-11-03 03:54:28,946 INFO L226 Difference]: Without dead ends: 80 [2021-11-03 03:54:28,947 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:54:28,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-03 03:54:28,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-11-03 03:54:28,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 79 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:28,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2021-11-03 03:54:28,960 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 32 [2021-11-03 03:54:28,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:28,961 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2021-11-03 03:54:28,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:28,962 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2021-11-03 03:54:28,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 03:54:28,965 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:28,966 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] [2021-11-03 03:54:28,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:54:29,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:54:29,180 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:54:29,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:29,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2121797098, now seen corresponding path program 1 times [2021-11-03 03:54:29,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:54:29,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20015577] [2021-11-03 03:54:29,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:29,182 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:54:29,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:54:29,186 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:54:29,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:54:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:29,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 03:54:29,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:29,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:29,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:54:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:30,195 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:54:30,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20015577] [2021-11-03 03:54:30,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20015577] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:30,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:30,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 03:54:30,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327849817] [2021-11-03 03:54:30,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:54:30,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:54:30,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:54:30,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:54:30,198 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:30,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:30,320 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2021-11-03 03:54:30,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:54:30,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 39 [2021-11-03 03:54:30,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:30,324 INFO L225 Difference]: With dead ends: 144 [2021-11-03 03:54:30,324 INFO L226 Difference]: Without dead ends: 80 [2021-11-03 03:54:30,325 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:54:30,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-03 03:54:30,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-11-03 03:54:30,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 79 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:30,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2021-11-03 03:54:30,344 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 39 [2021-11-03 03:54:30,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:30,344 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2021-11-03 03:54:30,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:30,345 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2021-11-03 03:54:30,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 03:54:30,350 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:30,350 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:54:30,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-03 03:54:30,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:54:30,551 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:54:30,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:30,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1786174002, now seen corresponding path program 1 times [2021-11-03 03:54:30,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:54:30,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837518252] [2021-11-03 03:54:30,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:30,554 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:54:30,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:54:30,555 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:54:30,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:54:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:31,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 03:54:31,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:31,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:31,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:54:31,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:31,547 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:54:31,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837518252] [2021-11-03 03:54:31,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837518252] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:31,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:31,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2021-11-03 03:54:31,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043683648] [2021-11-03 03:54:31,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 03:54:31,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:54:31,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 03:54:31,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:54:31,549 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:33,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:33,290 INFO L93 Difference]: Finished difference Result 125 states and 137 transitions. [2021-11-03 03:54:33,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 03:54:33,293 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-03 03:54:33,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:33,294 INFO L225 Difference]: With dead ends: 125 [2021-11-03 03:54:33,294 INFO L226 Difference]: Without dead ends: 80 [2021-11-03 03:54:33,295 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-11-03 03:54:33,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-03 03:54:33,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-11-03 03:54:33,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.16) internal successors, (87), 79 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:33,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2021-11-03 03:54:33,311 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 50 [2021-11-03 03:54:33,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:33,312 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2021-11-03 03:54:33,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:33,313 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2021-11-03 03:54:33,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 03:54:33,314 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:33,314 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 03:54:33,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:54:33,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:54:33,532 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:54:33,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:33,532 INFO L85 PathProgramCache]: Analyzing trace with hash -300657421, now seen corresponding path program 1 times [2021-11-03 03:54:33,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:54:33,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793781783] [2021-11-03 03:54:33,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:33,533 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:54:33,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:54:33,535 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:54:33,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:54:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:34,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-03 03:54:34,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:34,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:34,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:54:34,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:34,934 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:54:34,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793781783] [2021-11-03 03:54:34,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793781783] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:34,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:34,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 20 [2021-11-03 03:54:34,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129681928] [2021-11-03 03:54:34,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-03 03:54:34,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:54:34,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-03 03:54:34,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-11-03 03:54:34,938 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand has 20 states, 20 states have (on average 3.85) internal successors, (77), 20 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:36,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:36,775 INFO L93 Difference]: Finished difference Result 130 states and 142 transitions. [2021-11-03 03:54:36,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 03:54:36,778 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.85) internal successors, (77), 20 states have internal predecessors, (77), 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 03:54:36,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:36,786 INFO L225 Difference]: With dead ends: 130 [2021-11-03 03:54:36,786 INFO L226 Difference]: Without dead ends: 83 [2021-11-03 03:54:36,790 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=204, Invalid=666, Unknown=0, NotChecked=0, Total=870 [2021-11-03 03:54:36,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-03 03:54:36,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2021-11-03 03:54:36,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 1.12987012987013) internal successors, (87), 81 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:36,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2021-11-03 03:54:36,810 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 55 [2021-11-03 03:54:36,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:36,812 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2021-11-03 03:54:36,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.85) internal successors, (77), 20 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:36,812 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2021-11-03 03:54:36,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 03:54:36,815 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:36,816 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 03:54:36,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-03 03:54:37,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:54:37,032 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:54:37,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:37,032 INFO L85 PathProgramCache]: Analyzing trace with hash -168490957, now seen corresponding path program 1 times [2021-11-03 03:54:37,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:54:37,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158102235] [2021-11-03 03:54:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:37,033 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:54:37,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:54:37,034 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:54:37,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94a566f5-bf53-4959-b203-92fd0ccb47fc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 03:54:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:37,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-03 03:54:37,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:40,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:56:07,666 WARN L207 SmtUtils]: Spent 1.39 m on a formula simplification. DAG size of input: 662 DAG size of output: 412 [2021-11-03 03:56:07,677 INFO L354 Elim1Store]: treesize reduction 860, result has 57.3 percent of original size [2021-11-03 03:56:07,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 20 new quantified variables, introduced 153 case distinctions, treesize of input 148 treesize of output 1203