./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF --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 caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:02:39,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:02:39,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:02:39,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:02:39,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:02:39,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:02:39,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:02:39,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:02:39,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:02:39,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:02:39,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:02:39,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:02:39,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:02:39,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:02:39,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:02:39,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:02:39,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:02:39,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:02:39,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:02:39,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:02:39,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:02:39,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:02:39,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:02:39,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:02:39,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:02:39,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:02:39,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:02:39,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:02:39,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:02:39,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:02:39,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:02:39,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:02:39,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:02:39,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:02:39,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:02:39,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:02:39,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:02:39,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:02:39,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:02:39,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:02:39,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:02:39,859 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:02:39,886 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:02:39,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:02:39,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:02:39,913 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:02:39,913 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:02:39,913 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:02:39,913 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:02:39,914 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:02:39,914 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:02:39,914 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:02:39,915 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:02:39,915 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:02:39,915 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:02:39,915 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:02:39,916 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:02:39,916 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:02:39,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:02:39,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:02:39,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:02:39,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:02:39,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:02:39,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:02:39,918 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:02:39,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:02:39,919 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:02:39,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:02:39,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:02:39,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:02:39,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:02:39,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:02:39,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:02:39,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:02:39,924 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:02:39,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:02:39,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:02:39,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:02:39,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:02:39,926 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_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a [2021-11-12 23:02:40,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:02:40,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:02:40,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:02:40,262 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:02:40,263 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:02:40,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2021-11-12 23:02:40,337 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/data/9649e34ea/41d134f66a58435397f6de746243255b/FLAGa3886943d [2021-11-12 23:02:41,329 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:02:41,335 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2021-11-12 23:02:41,372 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/data/9649e34ea/41d134f66a58435397f6de746243255b/FLAGa3886943d [2021-11-12 23:02:41,697 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/data/9649e34ea/41d134f66a58435397f6de746243255b [2021-11-12 23:02:41,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:02:41,701 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:02:41,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:02:41,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:02:41,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:02:41,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:02:41" (1/1) ... [2021-11-12 23:02:41,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30ef6a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:41, skipping insertion in model container [2021-11-12 23:02:41,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:02:41" (1/1) ... [2021-11-12 23:02:41,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:02:41,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:02:42,190 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_aec3fe46-997f-430b-a3cd-2b481a39b055/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2021-11-12 23:02:42,197 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_aec3fe46-997f-430b-a3cd-2b481a39b055/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2021-11-12 23:02:42,222 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:02:42,228 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:02:43,289 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:43,294 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:43,295 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:43,297 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:43,299 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:43,335 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:43,340 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:43,342 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:43,344 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:43,893 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:02:43,895 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:02:43,896 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:02:43,897 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:02:43,899 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:02:43,900 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:02:43,901 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:02:43,902 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:02:43,903 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:02:43,903 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:02:44,226 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:02:44,356 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:44,357 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:44,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:02:44,511 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:02:44,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4640fd15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:44, skipping insertion in model container [2021-11-12 23:02:44,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:02:44,515 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:02:44,518 INFO L158 Benchmark]: Toolchain (without parser) took 2815.61ms. Allocated memory was 98.6MB in the beginning and 138.4MB in the end (delta: 39.8MB). Free memory was 67.3MB in the beginning and 81.5MB in the end (delta: -14.1MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2021-11-12 23:02:44,519 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 98.6MB. Free memory was 70.9MB in the beginning and 70.9MB in the end (delta: 48.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:02:44,521 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2812.70ms. Allocated memory was 98.6MB in the beginning and 138.4MB in the end (delta: 39.8MB). Free memory was 67.1MB in the beginning and 81.5MB in the end (delta: -14.4MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2021-11-12 23:02:44,531 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 98.6MB. Free memory was 70.9MB in the beginning and 70.9MB in the end (delta: 48.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2812.70ms. Allocated memory was 98.6MB in the beginning and 138.4MB in the end (delta: 39.8MB). Free memory was 67.1MB in the beginning and 81.5MB in the end (delta: -14.4MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) 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_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF --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 caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:02:46,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:02:46,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:02:47,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:02:47,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:02:47,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:02:47,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:02:47,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:02:47,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:02:47,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:02:47,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:02:47,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:02:47,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:02:47,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:02:47,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:02:47,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:02:47,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:02:47,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:02:47,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:02:47,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:02:47,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:02:47,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:02:47,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:02:47,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:02:47,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:02:47,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:02:47,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:02:47,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:02:47,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:02:47,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:02:47,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:02:47,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:02:47,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:02:47,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:02:47,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:02:47,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:02:47,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:02:47,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:02:47,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:02:47,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:02:47,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:02:47,145 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:02:47,196 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:02:47,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:02:47,198 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:02:47,198 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:02:47,198 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:02:47,199 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:02:47,199 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:02:47,199 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:02:47,199 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:02:47,199 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:02:47,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:02:47,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:02:47,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:02:47,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:02:47,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:02:47,203 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:02:47,204 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:02:47,204 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:02:47,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:02:47,204 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:02:47,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:02:47,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:02:47,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:02:47,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:02:47,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:02:47,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:02:47,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:02:47,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:02:47,207 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:02:47,207 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:02:47,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:02:47,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:02:47,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:02:47,208 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_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a [2021-11-12 23:02:47,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:02:47,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:02:47,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:02:47,660 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:02:47,661 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:02:47,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2021-11-12 23:02:47,728 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/data/c8b6134d3/40db82a310ef46ccb2179c49c8b62c47/FLAGa143b5658 [2021-11-12 23:02:48,905 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:02:48,906 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2021-11-12 23:02:48,960 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/data/c8b6134d3/40db82a310ef46ccb2179c49c8b62c47/FLAGa143b5658 [2021-11-12 23:02:49,202 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/data/c8b6134d3/40db82a310ef46ccb2179c49c8b62c47 [2021-11-12 23:02:49,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:02:49,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:02:49,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:02:49,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:02:49,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:02:49,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:02:49" (1/1) ... [2021-11-12 23:02:49,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55c3527e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:49, skipping insertion in model container [2021-11-12 23:02:49,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:02:49" (1/1) ... [2021-11-12 23:02:49,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:02:49,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:02:49,624 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_aec3fe46-997f-430b-a3cd-2b481a39b055/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2021-11-12 23:02:49,632 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_aec3fe46-997f-430b-a3cd-2b481a39b055/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2021-11-12 23:02:49,663 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:02:49,670 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:02:50,858 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:50,859 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:50,860 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:50,861 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:50,862 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:50,881 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:50,882 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:50,884 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:50,885 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:51,386 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:02:51,388 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:02:51,389 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:02:51,391 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:02:51,393 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:02:51,393 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:02:51,394 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:02:51,395 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:02:51,396 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:02:51,397 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:02:51,603 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:02:51,776 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:51,778 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:51,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:02:52,052 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:02:52,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:02:52,209 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_aec3fe46-997f-430b-a3cd-2b481a39b055/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2021-11-12 23:02:52,213 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_aec3fe46-997f-430b-a3cd-2b481a39b055/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2021-11-12 23:02:52,215 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:02:52,218 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:02:52,277 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,277 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,278 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,279 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,281 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,291 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,295 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,297 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,297 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,358 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:02:52,359 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:02:52,361 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:02:52,361 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:02:52,363 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:02:52,364 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:02:52,364 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:02:52,365 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:02:52,366 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:02:52,366 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:02:52,393 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:02:52,473 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,474 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:02:52,618 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:02:52,649 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_aec3fe46-997f-430b-a3cd-2b481a39b055/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2021-11-12 23:02:52,650 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_aec3fe46-997f-430b-a3cd-2b481a39b055/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2021-11-12 23:02:52,652 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:02:52,652 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:02:52,697 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,698 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,698 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,698 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,699 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,705 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,706 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,707 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,707 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,744 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:02:52,745 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:02:52,745 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:02:52,746 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:02:52,747 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:02:52,748 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:02:52,749 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:02:52,749 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:02:52,750 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:02:52,751 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:02:52,771 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:02:52,867 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,868 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:02:52,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:02:53,457 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:02:53,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:53 WrapperNode [2021-11-12 23:02:53,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:02:53,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:02:53,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:02:53,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:02:53,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:53" (1/1) ... [2021-11-12 23:02:53,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:53" (1/1) ... [2021-11-12 23:02:53,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:02:53,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:02:53,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:02:53,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:02:53,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:53" (1/1) ... [2021-11-12 23:02:53,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:53" (1/1) ... [2021-11-12 23:02:53,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:53" (1/1) ... [2021-11-12 23:02:53,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:53" (1/1) ... [2021-11-12 23:02:53,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:53" (1/1) ... [2021-11-12 23:02:53,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:53" (1/1) ... [2021-11-12 23:02:53,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:53" (1/1) ... [2021-11-12 23:02:53,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:02:53,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:02:53,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:02:53,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:02:53,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:53" (1/1) ... [2021-11-12 23:02:53,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:02:53,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:02:53,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:02:54,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:02:54,054 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-11-12 23:02:54,054 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-11-12 23:02:54,054 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-12 23:02:54,054 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-12 23:02:54,054 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2021-11-12 23:02:54,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2021-11-12 23:02:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-12 23:02:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:02:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 23:02:54,057 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 23:02:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:02:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:02:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:02:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:02:54,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:02:54,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:02:54,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:02:54,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:02:54,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:02:54,058 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 23:02:54,059 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 23:02:54,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:02:54,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:02:54,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 23:02:54,059 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:02:54,059 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:02:54,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:02:54,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:02:54,060 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-11-12 23:02:54,060 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-11-12 23:02:54,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:02:54,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:02:54,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:02:54,061 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-12 23:02:54,061 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-12 23:02:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-12 23:02:54,062 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-12 23:03:08,974 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:03:08,974 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:03:08,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:03:08 BoogieIcfgContainer [2021-11-12 23:03:08,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:03:08,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:03:08,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:03:08,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:03:08,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:02:49" (1/3) ... [2021-11-12 23:03:08,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b87a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:03:08, skipping insertion in model container [2021-11-12 23:03:08,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:02:53" (2/3) ... [2021-11-12 23:03:08,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b87a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:03:08, skipping insertion in model container [2021-11-12 23:03:08,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:03:08" (3/3) ... [2021-11-12 23:03:08,986 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_cursor_harness.i [2021-11-12 23:03:08,992 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:03:08,992 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:03:09,066 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:03:09,079 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 [2021-11-12 23:03:09,079 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:03:09,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 84 states have (on average 1.2857142857142858) internal successors, (108), 85 states have internal predecessors, (108), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-12 23:03:09,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-12 23:03:09,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:09,125 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:09,126 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:03:09,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:09,137 INFO L85 PathProgramCache]: Analyzing trace with hash -36783961, now seen corresponding path program 1 times [2021-11-12 23:03:09,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:03:09,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038982434] [2021-11-12 23:03:09,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:09,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:03:09,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:03:09,169 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:03:09,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:03:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:13,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:03:13,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:03:13,903 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-12 23:03:13,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:03:14,083 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-12 23:03:14,084 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:03:14,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038982434] [2021-11-12 23:03:14,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038982434] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:14,085 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:14,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:03:14,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895885287] [2021-11-12 23:03:14,088 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:14,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:03:14,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:03:14,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:03:14,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:03:14,127 INFO L87 Difference]: Start difference. First operand has 125 states, 84 states have (on average 1.2857142857142858) internal successors, (108), 85 states have internal predecessors, (108), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:03:14,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:14,167 INFO L93 Difference]: Finished difference Result 241 states and 335 transitions. [2021-11-12 23:03:14,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:03:14,169 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 61 [2021-11-12 23:03:14,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:14,181 INFO L225 Difference]: With dead ends: 241 [2021-11-12 23:03:14,182 INFO L226 Difference]: Without dead ends: 120 [2021-11-12 23:03:14,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:03:14,190 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.32ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:14,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 2.32ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:03:14,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-12 23:03:14,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-11-12 23:03:14,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 80 states have (on average 1.275) internal successors, (102), 81 states have internal predecessors, (102), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-12 23:03:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 159 transitions. [2021-11-12 23:03:14,244 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 159 transitions. Word has length 61 [2021-11-12 23:03:14,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:14,246 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 159 transitions. [2021-11-12 23:03:14,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:03:14,247 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 159 transitions. [2021-11-12 23:03:14,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-12 23:03:14,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:14,252 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:14,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:14,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:03:14,468 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:03:14,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:14,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1506462629, now seen corresponding path program 1 times [2021-11-12 23:03:14,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:03:14,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104770224] [2021-11-12 23:03:14,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:14,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:03:14,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:03:14,481 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:03:14,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:03:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:18,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:03:18,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:03:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-12 23:03:19,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:03:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-12 23:03:19,775 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:03:19,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104770224] [2021-11-12 23:03:19,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104770224] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:03:19,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:03:19,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 23:03:19,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458765444] [2021-11-12 23:03:19,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:19,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:03:19,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:03:19,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:03:19,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:03:19,781 INFO L87 Difference]: Start difference. First operand 120 states and 159 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-12 23:03:20,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:20,013 INFO L93 Difference]: Finished difference Result 206 states and 275 transitions. [2021-11-12 23:03:20,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:03:20,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 61 [2021-11-12 23:03:20,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:20,020 INFO L225 Difference]: With dead ends: 206 [2021-11-12 23:03:20,020 INFO L226 Difference]: Without dead ends: 123 [2021-11-12 23:03:20,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:03:20,023 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 50 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 141.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.00ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 184.11ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:20,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 537 Invalid, 28 Unknown, 0 Unchecked, 9.00ms Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 184.11ms Time] [2021-11-12 23:03:20,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-12 23:03:20,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-11-12 23:03:20,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 84 states have internal predecessors, (104), 29 states have call successors, (29), 10 states have call predecessors, (29), 11 states have return successors, (29), 28 states have call predecessors, (29), 28 states have call successors, (29) [2021-11-12 23:03:20,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 162 transitions. [2021-11-12 23:03:20,043 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 162 transitions. Word has length 61 [2021-11-12 23:03:20,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:20,044 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 162 transitions. [2021-11-12 23:03:20,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-12 23:03:20,044 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 162 transitions. [2021-11-12 23:03:20,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:03:20,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:20,047 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:20,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:20,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:03:20,260 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:03:20,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:20,261 INFO L85 PathProgramCache]: Analyzing trace with hash -227569102, now seen corresponding path program 1 times [2021-11-12 23:03:20,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:03:20,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250502534] [2021-11-12 23:03:20,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:20,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:03:20,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:03:20,271 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:03:20,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:03:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:24,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:03:24,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:03:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-12 23:03:25,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:03:25,413 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-12 23:03:25,413 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:03:25,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250502534] [2021-11-12 23:03:25,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250502534] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:25,414 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:25,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-12 23:03:25,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574578308] [2021-11-12 23:03:25,414 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:25,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:03:25,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:03:25,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:03:25,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:03:25,416 INFO L87 Difference]: Start difference. First operand 123 states and 162 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-12 23:03:25,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:25,949 INFO L93 Difference]: Finished difference Result 227 states and 308 transitions. [2021-11-12 23:03:25,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:03:25,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 65 [2021-11-12 23:03:25,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:25,953 INFO L225 Difference]: With dead ends: 227 [2021-11-12 23:03:25,953 INFO L226 Difference]: Without dead ends: 158 [2021-11-12 23:03:25,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:03:25,955 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 78 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 296.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.78ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 347.48ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:25,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 833 Invalid, 81 Unknown, 0 Unchecked, 8.78ms Time], IncrementalHoareTripleChecker [35 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 347.48ms Time] [2021-11-12 23:03:25,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-12 23:03:25,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 135. [2021-11-12 23:03:25,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 90 states have (on average 1.2555555555555555) internal successors, (113), 92 states have internal predecessors, (113), 33 states have call successors, (33), 10 states have call predecessors, (33), 11 states have return successors, (34), 32 states have call predecessors, (34), 32 states have call successors, (34) [2021-11-12 23:03:25,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 180 transitions. [2021-11-12 23:03:25,975 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 180 transitions. Word has length 65 [2021-11-12 23:03:25,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:25,976 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 180 transitions. [2021-11-12 23:03:25,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-12 23:03:25,976 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 180 transitions. [2021-11-12 23:03:25,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:03:25,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:25,980 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:26,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:26,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:03:26,194 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:03:26,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:26,194 INFO L85 PathProgramCache]: Analyzing trace with hash 474030772, now seen corresponding path program 1 times [2021-11-12 23:03:26,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:03:26,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008503547] [2021-11-12 23:03:26,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:26,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:03:26,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:03:26,202 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:03:26,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:03:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:30,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:03:30,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:03:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-12 23:03:31,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:03:31,583 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-12 23:03:31,584 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:03:31,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008503547] [2021-11-12 23:03:31,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008503547] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:31,584 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:31,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:03:31,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437373924] [2021-11-12 23:03:31,585 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:31,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:03:31,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:03:31,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:03:31,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:03:31,586 INFO L87 Difference]: Start difference. First operand 135 states and 180 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-12 23:03:31,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:31,712 INFO L93 Difference]: Finished difference Result 233 states and 315 transitions. [2021-11-12 23:03:31,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:03:31,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 65 [2021-11-12 23:03:31,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:31,717 INFO L225 Difference]: With dead ends: 233 [2021-11-12 23:03:31,717 INFO L226 Difference]: Without dead ends: 179 [2021-11-12 23:03:31,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:03:31,719 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 12 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.15ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 107.70ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:31,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 482 Invalid, 16 Unknown, 0 Unchecked, 3.15ms Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 107.70ms Time] [2021-11-12 23:03:31,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-12 23:03:31,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2021-11-12 23:03:31,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 118 states have (on average 1.2542372881355932) internal successors, (148), 120 states have internal predecessors, (148), 47 states have call successors, (47), 10 states have call predecessors, (47), 11 states have return successors, (50), 46 states have call predecessors, (50), 46 states have call successors, (50) [2021-11-12 23:03:31,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 245 transitions. [2021-11-12 23:03:31,759 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 245 transitions. Word has length 65 [2021-11-12 23:03:31,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:31,759 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 245 transitions. [2021-11-12 23:03:31,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-12 23:03:31,760 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 245 transitions. [2021-11-12 23:03:31,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:03:31,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:31,763 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:31,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:31,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:03:31,976 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:03:31,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:31,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1921107313, now seen corresponding path program 1 times [2021-11-12 23:03:31,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:03:31,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536935165] [2021-11-12 23:03:31,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:31,982 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:03:31,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:03:31,983 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:03:32,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:03:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:36,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 1820 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-12 23:03:36,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:03:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-12 23:03:41,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:03:57,869 WARN L227 SmtUtils]: Spent 11.78s on a formula simplification. DAG size of input: 523 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:03:57,878 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-12 23:03:57,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 128 treesize of output 771 [2021-11-12 23:16:01,520 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-12 23:16:01,520 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:16:01,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536935165] [2021-11-12 23:16:01,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536935165] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:16:01,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1194078983] [2021-11-12 23:16:01,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:16:01,521 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:16:01,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:16:01,522 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:16:01,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-12 23:16:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:09,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 1820 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 23:16:09,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:16:09,807 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-12 23:16:09,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:16:10,240 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-12 23:16:10,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1194078983] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:16:10,240 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:16:10,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [15, 13] total 28 [2021-11-12 23:16:10,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878387187] [2021-11-12 23:16:10,241 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:16:10,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:16:10,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:16:10,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:16:10,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2021-11-12 23:16:10,243 INFO L87 Difference]: Start difference. First operand 177 states and 245 transitions. Second operand has 12 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2021-11-12 23:16:10,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:16:10,578 INFO L93 Difference]: Finished difference Result 188 states and 261 transitions. [2021-11-12 23:16:10,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:16:10,579 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) Word has length 65 [2021-11-12 23:16:10,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:16:10,581 INFO L225 Difference]: With dead ends: 188 [2021-11-12 23:16:10,582 INFO L226 Difference]: Without dead ends: 181 [2021-11-12 23:16:10,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 222 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2021-11-12 23:16:10,584 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 17 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 126.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.46ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 138.05ms IncrementalHoareTripleChecker+Time [2021-11-12 23:16:10,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 1544 Invalid, 60 Unknown, 0 Unchecked, 6.46ms Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 138.05ms Time] [2021-11-12 23:16:10,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-12 23:16:10,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-12 23:16:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 121 states have (on average 1.2479338842975207) internal successors, (151), 124 states have internal predecessors, (151), 47 states have call successors, (47), 10 states have call predecessors, (47), 12 states have return successors, (56), 46 states have call predecessors, (56), 46 states have call successors, (56) [2021-11-12 23:16:10,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 254 transitions. [2021-11-12 23:16:10,602 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 254 transitions. Word has length 65 [2021-11-12 23:16:10,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:16:10,603 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 254 transitions. [2021-11-12 23:16:10,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2021-11-12 23:16:10,603 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 254 transitions. [2021-11-12 23:16:10,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-12 23:16:10,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:16:10,606 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:16:10,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:16:10,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:16:11,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:16:11,026 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:16:11,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:16:11,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1896065095, now seen corresponding path program 1 times [2021-11-12 23:16:11,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:16:11,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427472357] [2021-11-12 23:16:11,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:16:11,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:16:11,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:16:11,031 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:16:11,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aec3fe46-997f-430b-a3cd-2b481a39b055/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:16:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:15,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1829 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-12 23:16:15,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:16:17,894 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-12 23:16:17,894 INFO L328 TraceCheckSpWp]: Computing backward predicates...