./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_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_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/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_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/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_769dc400-f34b-4f02-9ccd-96f43dd94ef0/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 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:34:52,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:34:52,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:34:52,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:34:52,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:34:52,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:34:52,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:34:52,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:34:52,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:34:52,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:34:52,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:34:52,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:34:52,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:34:52,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:34:52,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:34:52,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:34:52,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:34:52,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:34:52,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:34:52,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:34:52,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:34:52,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:34:52,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:34:52,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:34:52,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:34:52,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:34:52,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:34:52,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:34:52,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:34:52,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:34:52,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:34:52,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:34:52,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:34:52,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:34:52,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:34:52,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:34:52,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:34:52,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:34:52,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:34:52,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:34:52,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:34:52,914 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 02:34:52,969 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:34:52,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:34:52,970 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:34:52,971 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:34:52,971 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:34:52,971 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:34:52,971 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:34:52,971 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:34:52,972 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:34:52,972 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:34:52,972 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:34:52,972 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:34:52,973 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:34:52,976 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:34:52,976 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:34:52,977 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:34:52,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:34:52,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:34:52,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:34:52,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:34:52,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:34:52,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:34:52,979 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:34:52,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:34:52,980 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:34:52,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:34:52,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:34:52,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:34:52,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:34:52,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:34:52,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:34:52,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:34:52,982 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:34:52,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:34:52,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:34:52,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:34:52,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:34:52,984 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_769dc400-f34b-4f02-9ccd-96f43dd94ef0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b [2021-11-13 02:34:53,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:34:53,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:34:53,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:34:53,346 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:34:53,349 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:34:53,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2021-11-13 02:34:53,417 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/data/fb3112074/ad3998c1959744188caf4974915593da/FLAG1a8efe113 [2021-11-13 02:34:54,316 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:34:54,316 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2021-11-13 02:34:54,375 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/data/fb3112074/ad3998c1959744188caf4974915593da/FLAG1a8efe113 [2021-11-13 02:34:54,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/data/fb3112074/ad3998c1959744188caf4974915593da [2021-11-13 02:34:54,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:34:54,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:34:54,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:34:54,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:34:54,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:34:54,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:34:54" (1/1) ... [2021-11-13 02:34:54,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38beb953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:54, skipping insertion in model container [2021-11-13 02:34:54,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:34:54" (1/1) ... [2021-11-13 02:34:54,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:34:54,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:34:54,914 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_769dc400-f34b-4f02-9ccd-96f43dd94ef0/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4497,4510] [2021-11-13 02:34:54,923 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_769dc400-f34b-4f02-9ccd-96f43dd94ef0/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4557,4570] [2021-11-13 02:34:54,952 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 02:34:54,959 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 02:34:55,829 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 02:34:55,925 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:34:55,926 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:34:55,926 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:34:55,927 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:34:55,929 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:34:55,941 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:34:55,942 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:34:55,944 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:34:55,945 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:34:55,947 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:34:55,948 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:34:55,949 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:34:55,950 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:34:56,363 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 02:34:56,365 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 02:34:56,366 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 02:34:56,367 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 02:34:56,369 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 02:34:56,369 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 02:34:56,370 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 02:34:56,371 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 02:34:56,372 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 02:34:56,373 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 02:34:56,529 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:34:56,539 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:34:56,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:34:56,709 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) [2021-11-13 02:34:56,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@79545514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:56, skipping insertion in model container [2021-11-13 02:34:56,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:34:56,711 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 02:34:56,714 INFO L158 Benchmark]: Toolchain (without parser) took 2283.31ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 62.2MB in the beginning and 97.2MB in the end (delta: -35.0MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. [2021-11-13 02:34:56,715 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory was 55.5MB in the beginning and 55.5MB in the end (delta: 42.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:34:56,716 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2279.93ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 62.0MB in the beginning and 97.2MB in the end (delta: -35.2MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. [2021-11-13 02:34:56,717 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory was 55.5MB in the beginning and 55.5MB in the end (delta: 42.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2279.93ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 62.0MB in the beginning and 97.2MB in the end (delta: -35.2MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2886]: 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_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/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_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/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_769dc400-f34b-4f02-9ccd-96f43dd94ef0/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 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:34:59,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:34:59,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:34:59,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:34:59,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:34:59,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:34:59,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:34:59,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:34:59,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:34:59,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:34:59,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:34:59,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:34:59,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:34:59,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:34:59,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:34:59,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:34:59,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:34:59,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:34:59,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:34:59,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:34:59,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:34:59,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:34:59,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:34:59,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:34:59,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:34:59,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:34:59,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:34:59,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:34:59,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:34:59,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:34:59,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:34:59,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:34:59,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:34:59,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:34:59,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:34:59,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:34:59,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:34:59,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:34:59,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:34:59,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:34:59,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:34:59,337 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 02:34:59,364 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:34:59,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:34:59,366 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:34:59,366 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:34:59,366 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:34:59,367 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:34:59,367 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:34:59,368 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:34:59,368 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:34:59,368 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:34:59,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:34:59,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:34:59,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:34:59,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:34:59,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:34:59,370 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:34:59,370 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:34:59,371 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:34:59,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:34:59,371 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:34:59,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:34:59,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:34:59,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:34:59,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:34:59,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:34:59,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:34:59,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:34:59,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:34:59,373 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:34:59,374 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:34:59,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:34:59,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:34:59,374 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:34:59,374 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_769dc400-f34b-4f02-9ccd-96f43dd94ef0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b [2021-11-13 02:34:59,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:34:59,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:34:59,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:34:59,821 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:34:59,822 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:34:59,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2021-11-13 02:34:59,918 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/data/82c9257e3/e0cd705b566d414aafa8f75e20bcdb63/FLAG8b193a035 [2021-11-13 02:35:00,746 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:35:00,747 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2021-11-13 02:35:00,803 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/data/82c9257e3/e0cd705b566d414aafa8f75e20bcdb63/FLAG8b193a035 [2021-11-13 02:35:01,298 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/data/82c9257e3/e0cd705b566d414aafa8f75e20bcdb63 [2021-11-13 02:35:01,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:35:01,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:35:01,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:35:01,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:35:01,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:35:01,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:35:01" (1/1) ... [2021-11-13 02:35:01,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@584a076a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:01, skipping insertion in model container [2021-11-13 02:35:01,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:35:01" (1/1) ... [2021-11-13 02:35:01,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:35:01,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:35:01,814 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_769dc400-f34b-4f02-9ccd-96f43dd94ef0/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4497,4510] [2021-11-13 02:35:01,822 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_769dc400-f34b-4f02-9ccd-96f43dd94ef0/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4557,4570] [2021-11-13 02:35:01,856 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 02:35:01,865 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 02:35:03,246 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 02:35:03,384 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:03,384 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:03,385 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:03,386 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:03,387 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:03,400 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:03,401 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:03,403 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:03,403 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:03,405 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:03,406 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:03,407 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:03,408 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:03,898 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 02:35:03,899 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 02:35:03,900 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 02:35:03,902 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 02:35:03,903 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 02:35:03,904 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 02:35:03,904 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 02:35:03,905 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 02:35:03,906 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 02:35:03,907 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 02:35:04,064 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,071 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:35:04,157 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 02:35:04,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:35:04,197 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_769dc400-f34b-4f02-9ccd-96f43dd94ef0/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4497,4510] [2021-11-13 02:35:04,198 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_769dc400-f34b-4f02-9ccd-96f43dd94ef0/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4557,4570] [2021-11-13 02:35:04,199 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 02:35:04,200 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 02:35:04,227 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 02:35:04,241 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,242 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,242 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,243 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,243 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,250 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,250 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,251 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,252 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,253 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,253 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,254 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,254 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,287 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 02:35:04,288 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 02:35:04,289 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 02:35:04,290 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 02:35:04,290 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 02:35:04,291 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 02:35:04,292 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 02:35:04,292 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 02:35:04,292 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 02:35:04,293 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 02:35:04,319 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,323 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:35:04,377 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:35:04,390 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_769dc400-f34b-4f02-9ccd-96f43dd94ef0/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4497,4510] [2021-11-13 02:35:04,391 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_769dc400-f34b-4f02-9ccd-96f43dd94ef0/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4557,4570] [2021-11-13 02:35:04,392 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 02:35:04,393 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 02:35:04,416 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 02:35:04,427 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,428 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,428 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,429 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,429 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,434 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,435 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,436 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,436 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,437 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,437 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,438 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,438 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,466 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 02:35:04,467 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 02:35:04,467 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 02:35:04,468 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 02:35:04,469 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 02:35:04,469 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 02:35:04,470 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 02:35:04,470 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 02:35:04,471 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 02:35:04,471 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 02:35:04,519 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,524 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 02:35:04,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:35:04,802 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:35:04,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:04 WrapperNode [2021-11-13 02:35:04,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:35:04,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:35:04,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:35:04,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:35:04,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:04" (1/1) ... [2021-11-13 02:35:04,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:04" (1/1) ... [2021-11-13 02:35:05,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:35:05,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:35:05,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:35:05,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:35:05,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:04" (1/1) ... [2021-11-13 02:35:05,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:04" (1/1) ... [2021-11-13 02:35:05,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:04" (1/1) ... [2021-11-13 02:35:05,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:04" (1/1) ... [2021-11-13 02:35:05,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:04" (1/1) ... [2021-11-13 02:35:05,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:04" (1/1) ... [2021-11-13 02:35:05,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:04" (1/1) ... [2021-11-13 02:35:05,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:35:05,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:35:05,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:35:05,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:35:05,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:04" (1/1) ... [2021-11-13 02:35:05,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:35:05,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:35:05,230 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:35:05,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:35:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:35:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-13 02:35:05,329 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-13 02:35:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-13 02:35:05,329 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-13 02:35:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-13 02:35:05,330 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-13 02:35:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:35:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 02:35:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 02:35:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-13 02:35:05,330 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-13 02:35:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 02:35:05,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 02:35:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 02:35:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 02:35:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:35:05,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:35:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-13 02:35:05,332 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-13 02:35:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 02:35:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-13 02:35:05,333 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-13 02:35:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 02:35:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-13 02:35:05,334 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-13 02:35:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-13 02:35:05,338 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-13 02:35:05,338 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 02:35:05,338 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 02:35:05,339 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2021-11-13 02:35:05,339 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2021-11-13 02:35:05,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:35:05,340 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-13 02:35:05,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 02:35:05,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 02:35:05,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 02:35:05,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 02:35:05,347 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-13 02:35:05,347 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-13 02:35:05,348 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-13 02:35:05,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-13 02:35:05,348 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-11-13 02:35:05,348 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-11-13 02:35:05,348 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-13 02:35:05,348 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-13 02:35:05,349 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-13 02:35:05,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-13 02:35:21,757 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:35:21,758 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 02:35:21,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:35:21 BoogieIcfgContainer [2021-11-13 02:35:21,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:35:21,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:35:21,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:35:21,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:35:21,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:35:01" (1/3) ... [2021-11-13 02:35:21,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da708f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:35:21, skipping insertion in model container [2021-11-13 02:35:21,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:04" (2/3) ... [2021-11-13 02:35:21,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da708f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:35:21, skipping insertion in model container [2021-11-13 02:35:21,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:35:21" (3/3) ... [2021-11-13 02:35:21,771 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_back_harness.i [2021-11-13 02:35:21,778 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:35:21,779 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:35:21,840 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:35:21,848 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 [2021-11-13 02:35:21,849 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:35:21,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 168 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 103 states have internal predecessors, (123), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-13 02:35:21,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 02:35:21,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:21,888 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:35:21,889 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:21,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:21,896 INFO L85 PathProgramCache]: Analyzing trace with hash 361569913, now seen corresponding path program 1 times [2021-11-13 02:35:21,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:21,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367814928] [2021-11-13 02:35:21,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:21,921 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:21,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:21,925 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:21,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:35:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:26,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 1696 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 02:35:26,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:26,841 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-13 02:35:26,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:27,095 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-13 02:35:27,096 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:27,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367814928] [2021-11-13 02:35:27,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367814928] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:27,097 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:35:27,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 02:35:27,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422735413] [2021-11-13 02:35:27,099 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:27,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 02:35:27,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:27,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 02:35:27,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:35:27,145 INFO L87 Difference]: Start difference. First operand has 168 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 103 states have internal predecessors, (123), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 02:35:27,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:27,229 INFO L93 Difference]: Finished difference Result 329 states and 463 transitions. [2021-11-13 02:35:27,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 02:35:27,231 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 84 [2021-11-13 02:35:27,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:27,247 INFO L225 Difference]: With dead ends: 329 [2021-11-13 02:35:27,247 INFO L226 Difference]: Without dead ends: 163 [2021-11-13 02:35:27,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:35:27,264 INFO L933 BasicCegarLoop]: 216 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, 216 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.26ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:27,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 6.26ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 02:35:27,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-13 02:35:27,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-11-13 02:35:27,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 98 states have (on average 1.183673469387755) internal successors, (116), 99 states have internal predecessors, (116), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-11-13 02:35:27,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 211 transitions. [2021-11-13 02:35:27,364 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 211 transitions. Word has length 84 [2021-11-13 02:35:27,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:27,365 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 211 transitions. [2021-11-13 02:35:27,366 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 02:35:27,366 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 211 transitions. [2021-11-13 02:35:27,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 02:35:27,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:27,372 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:35:27,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:27,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:27,578 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:27,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:27,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1301778443, now seen corresponding path program 1 times [2021-11-13 02:35:27,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:27,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595087849] [2021-11-13 02:35:27,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:27,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:27,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:27,603 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:27,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:35:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:31,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 1696 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:35:31,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-13 02:35:32,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-13 02:35:32,451 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:32,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595087849] [2021-11-13 02:35:32,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595087849] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:32,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:35:32,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-11-13 02:35:32,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565320121] [2021-11-13 02:35:32,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:32,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:35:32,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:32,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:35:32,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:35:32,454 INFO L87 Difference]: Start difference. First operand 163 states and 211 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-13 02:35:33,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:33,056 INFO L93 Difference]: Finished difference Result 291 states and 385 transitions. [2021-11-13 02:35:33,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:35:33,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 84 [2021-11-13 02:35:33,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:33,065 INFO L225 Difference]: With dead ends: 291 [2021-11-13 02:35:33,066 INFO L226 Difference]: Without dead ends: 165 [2021-11-13 02:35:33,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:35:33,068 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 38 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 456.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.25ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 533.97ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:33,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 700 Invalid, 84 Unknown, 0 Unchecked, 9.25ms Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 533.97ms Time] [2021-11-13 02:35:33,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-13 02:35:33,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-11-13 02:35:33,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 101 states have internal predecessors, (117), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (52), 47 states have call predecessors, (52), 47 states have call successors, (52) [2021-11-13 02:35:33,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 217 transitions. [2021-11-13 02:35:33,090 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 217 transitions. Word has length 84 [2021-11-13 02:35:33,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:33,091 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 217 transitions. [2021-11-13 02:35:33,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-13 02:35:33,091 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 217 transitions. [2021-11-13 02:35:33,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-13 02:35:33,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:33,094 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:35:33,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-13 02:35:33,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:33,300 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:33,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:33,301 INFO L85 PathProgramCache]: Analyzing trace with hash 2117456363, now seen corresponding path program 1 times [2021-11-13 02:35:33,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:33,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548168705] [2021-11-13 02:35:33,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:33,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:33,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:33,305 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:33,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:35:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:37,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:35:37,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:37,968 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-13 02:35:37,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-13 02:35:38,421 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:38,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548168705] [2021-11-13 02:35:38,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548168705] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:38,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:35:38,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2021-11-13 02:35:38,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249252081] [2021-11-13 02:35:38,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:38,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:35:38,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:38,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:35:38,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:35:38,423 INFO L87 Difference]: Start difference. First operand 165 states and 217 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 02:35:39,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:39,520 INFO L93 Difference]: Finished difference Result 283 states and 374 transitions. [2021-11-13 02:35:39,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:35:39,525 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 99 [2021-11-13 02:35:39,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:39,528 INFO L225 Difference]: With dead ends: 283 [2021-11-13 02:35:39,528 INFO L226 Difference]: Without dead ends: 165 [2021-11-13 02:35:39,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:35:39,530 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 56 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 872.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.19ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1001.97ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:39,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 1016 Invalid, 168 Unknown, 0 Unchecked, 10.19ms Time], IncrementalHoareTripleChecker [24 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 1001.97ms Time] [2021-11-13 02:35:39,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-13 02:35:39,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-11-13 02:35:39,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 101 states have internal predecessors, (117), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2021-11-13 02:35:39,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 214 transitions. [2021-11-13 02:35:39,569 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 214 transitions. Word has length 99 [2021-11-13 02:35:39,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:39,570 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 214 transitions. [2021-11-13 02:35:39,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 02:35:39,571 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 214 transitions. [2021-11-13 02:35:39,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-13 02:35:39,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:39,581 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:35:39,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:39,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:39,806 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:39,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:39,806 INFO L85 PathProgramCache]: Analyzing trace with hash -751059283, now seen corresponding path program 2 times [2021-11-13 02:35:39,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:39,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475866061] [2021-11-13 02:35:39,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:35:39,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:39,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:39,811 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:39,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769dc400-f34b-4f02-9ccd-96f43dd94ef0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process